EP2414617A2 - Device for use in a fluid exploitation well, exploitation equipment, and associated method - Google Patents

Device for use in a fluid exploitation well, exploitation equipment, and associated method

Info

Publication number
EP2414617A2
EP2414617A2 EP10723180A EP10723180A EP2414617A2 EP 2414617 A2 EP2414617 A2 EP 2414617A2 EP 10723180 A EP10723180 A EP 10723180A EP 10723180 A EP10723180 A EP 10723180A EP 2414617 A2 EP2414617 A2 EP 2414617A2
Authority
EP
European Patent Office
Prior art keywords
hydraulic
pump
motor
well
downstream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10723180A
Other languages
German (de)
French (fr)
Other versions
EP2414617B1 (en
Inventor
Bruno Le Briere
Clément LAPLANE
Jean-Pierre Michel Lepine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geoservices Equipements SAS
Original Assignee
Geoservices Equipements SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geoservices Equipements SAS filed Critical Geoservices Equipements SAS
Publication of EP2414617A2 publication Critical patent/EP2414617A2/en
Application granted granted Critical
Publication of EP2414617B1 publication Critical patent/EP2414617B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for displacing a cable or cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/42—Control devices non-automatic
    • B66D1/44—Control devices non-automatic pneumatic of hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
    • F04B47/04—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means

Definitions

  • the present invention relates to a device for intervention in a fluid exploitation well, of the type comprising: a shuttle carrying at least one intervention and / or measurement tool, intended to be introduced into the well;
  • a winch for maneuvering the line comprising a rotary drum for winding the line and a hydraulic power unit for driving the drum in rotation, the hydraulic power unit comprising:
  • a pump for driving the hydraulic fluid contained in the tank connected to the tank by an upstream pipe;
  • At least one hydraulic motor for driving the drum connected to the pump via an intermediate pipe and connected to the tank by a downstream pipe.
  • the invention applies in particular to the operations that must be performed in the well using tools attached to the shuttle. These operations are, for example, the opening and closing of valves, the breaking of shear pins, the production of perforations, the placing and removal of tools in the well, or the retrieval of tools stuck in the well. (eg laying and removing anchor chucks).
  • the tool is mounted at the free end of a cable working line which may be in particular a smooth single-strand cable type "piano wire” or “slickline” but also a stranded cable called “braided line” or “electric line”.
  • a cable working line which may be in particular a smooth single-strand cable type "piano wire” or “slickline” but also a stranded cable called “braided line” or “electric line”.
  • These cables are generally made of steel but can be coated or composite material.
  • a winch which is brought to the vicinity of the well, and which is rotated to wind and unroll cable in the well.
  • the known winches generally comprise a drum on which is wound the working line to the cable, and a hydraulic power unit for rotating the drum.
  • the hydraulic unit is in most cases of type "open loop” (or "open loop”).
  • This type of plant comprises a storage tank containing a large amount of hydraulic fluid, a hydraulic pipe having two ends immersed in the sheet, a pump and a motor connected in series on the hydraulic pipe.
  • An adjustable bypass connects the pump outlet upstream of the motor to the tank.
  • This type of plant operates by operating the pump to continuously deliver a maximum flow of fluid and selectively deriving a selected amount of hydraulic fluid through the bypass depending on the load and the speed required on the engine.
  • closed loop hydraulic power stations (or “closed loop”) have also been used.
  • This type of plant is equipped with a low volume hydraulic tarpaulin.
  • the displacement of the pump is manually adjustable and the pump outputs are connected directly to the motor inputs.
  • the closed-loop power plants make it possible to adjust the speed of deployment more precisely, especially at slow speed (10m / min is the normal speed for a logging operation), and to limit the energy consumption since the pump is powered only by depending on the speed required.
  • they have the disadvantage of not being sufficiently reactive when a high acceleration must be obtained quickly upward or downward.
  • a hydraulic supply pump is required for each system, which increases the maintenance costs and the complexity of the hydraulic circuit.
  • An object of the invention is therefore to obtain a response device in a well which is very reactive, while consuming little energy and having good accuracy and good stability at low speed whatever the load.
  • the subject of the invention is an intervention device of the aforementioned type, characterized in that the hydraulic unit comprises a regulator of the flow of hydraulic fluid delivered to the or each hydraulic motor, the regulator being controlled according to at least one hydraulic fluid pressure depending on the load exerted on the engine by the rotary drum, the or each pressure being taken directly on one of said pipes.
  • the device according to the invention may comprise one or more of the following characteristics, taken in isolation or according to any combination (s) technically possible:
  • the hydraulic unit comprises an adjustable calibrated throat, mounted on the intermediate pipe, an upstream tapping, and a downstream tapping to take the pressure upstream and downstream of the throat, the regulator being slaved to maintain substantially constant at a threshold value.
  • adjustable pressure difference taken between the upstream and downstream connections;
  • the regulator comprises a pump flow control assembly comprising a movable member between a minimum flow position and a maximum flow position, the regulator comprising a servo assembly of the movable member comprising a control valve; having a slide movable between a first regulating position for moving the movable member to the maximum flow position and a second regulating position for moving the movable member to the minimum flow position, the upstream stitching and the downstream stitching being hydraulically connected to the control valve to move the spool between its control positions according to the pressure difference between the upstream stitching and the downstream stitching;
  • the adjustment assembly comprises an enclosure delimiting a receiving chamber of the movable member, the movable member defining in the chamber an upstream region hydraulically connected to one of said ducts and a downstream region hydraulically connected to the valve; regulator, the drawer in its first position being connected to the downstream region, for supplying the downstream region with hydraulic fluid under pressure, and in its second position hydraulically connecting the downstream region to a low pressure tank;
  • the device comprises a branch pipe connecting the output of the pump to the tank, the regulator comprising a flow control valve flowing through the branch pipe;
  • the hydraulic unit comprises a switching valve movable between a first activation position in which the intermediate pipe is formed between the outlet of the pump and a first inlet of the motor, and the downstream pipe is formed between a second inlet of the motor and the tarpaulin, and a second activation position in which the intermediate pipe is formed between the second inlet of the engine and the outlet of the pump and the downstream pipe connects the first inlet of the engine and the boat;
  • the hydraulic unit comprises a hydraulically driven member connected to the pump in parallel with the hydraulic motor.
  • logs logs
  • fishing fishing
  • threshing pistoning in the well.
  • It allows, without complicating the hydraulic circuit, to associate a number of hydraulic accessories.
  • the invention furthermore relates to a fluid exploitation installation, characterized in that it comprises:
  • the subject of the invention is also a method for operating an exploitation well, characterized in that it comprises the following steps:
  • FIG. 1 is a partial diagrammatic view, taken in section along a median vertical plane, of a first fluid exploitation installation comprising an intervention device according to the invention
  • FIG. 2 is a simplified hydraulic diagram of the hydraulic winch drive in the intervention device of Figure 1;
  • FIG. 3 is a simplified hydraulic diagram of the flow control valve of the hydraulic power plant of Figure 2;
  • FIG. 4 is a view similar to Figure 2 of a second intervention device according to the invention.
  • FIG. 5 is a view similar to Figure 3 of the second intervention device according to the invention
  • - Figure 6 is a view similar to Figure 2 of a third intervention device according to the invention.
  • FIG. 1 A first fluid exploitation installation 10 according to the invention is shown in FIG. 1.
  • This installation 10 comprises a well 12 for exploiting a fluid contained in the soil 18, a wellhead 14 closing the well 12 at the level of the surface 16 of the ground 18, and an intervention device 20 according to the invention for carrying out operations in the well 12.
  • the well 12 is formed in the ground 18 for connecting a sheet of operating fluid (not shown) located deep in the ground 18 at a first point 22 located on the surface.
  • the well 12 comprises an outer conduit 24 called
  • the fluid used is for example a hydrocarbon, such as oil or gas.
  • the wellhead 14 selectively closes the conduits 24, 26 at the first surface point 22. It thus comprises a device for closing the well 28 and, for the introduction of the intervention device 20 into the well 12, sealing means 30 and guide pulleys 32.
  • the intervention device 20 comprises a shuttle 34 intended to be introduced into the conduits 24, 26 of the well 12, a cable working line 36 for the deployment of the shuttle 34 in the well 12, inserted into the well through the wellhead 14, and a winch maneuver 38 from the line of work to the cable.
  • the shuttle 34 is of generally elongate shape. It carries, for example, intervention tools in the well such as an anchor, a slide, an actuator, an explosive head, or measurement tools such as sensors for measuring the temperature or pressure in the well, sensors measuring the properties of the formation around the well, such as the natural radiation emitted by the formation.
  • the working line to the cable 36 is formed by a solid single-strand smooth cable, called "piano wire", designated by the English term “slickline”.
  • This cable is made of metallic material, such as a galvanized stainless steel (for example type 316).
  • This smooth cable has good pressure resistance and adequate flexibility.
  • this type of cable is made of a breaking force of 300 daN to 1500 daN, preferably 600 to 1000 daN. It has a length greater than 5000 m generally between 1000 m and 4000 ... m depending on the depth of the well. Some very deep wells can reach 8000m.
  • the cable is a stranded cable type "braided line” or "electric line".
  • the working line to the cable 36 is unwound from the winch 38, then passed around the return pulleys 32 before being introduced into the well through the sealing means 30.
  • the shuttle 34 is fixed at the end free 40 of line 36.
  • the winch 38 comprises a rotary winding drum 42 of the line 38, a drum support 44 placed on the ground 18, and a hydraulic unit 46 for actuating and controlling the rotary drum 42.
  • the drum 42 is rotatably mounted about a horizontal axis on the support 44. It comprises a substantially cylindrical outer winding surface of the line 38.
  • the rotation of the drum 42 about its axis in a first direction winds the line 36 around the drum and moves the shuttle 34 to the top of the well 12, while the rotation of the drum 42 about its axis in a second direction unwinds the line 38 out of the drum 42 and moves the shuttle 34 down the well 12.
  • the hydraulic unit 36 comprises a tank 50 for storing a hydraulic drive fluid, a pump 52 for displacing the hydraulic fluid, connected to the tank 50, and a motor 56 for driving in rotation.
  • drum 42 hydraulically connected to the pump 52 and the tank 50 by a selective distributor 58 for driving in rotation the motor 56 and the drum 42 in the first direction or in the second direction.
  • the central unit 46 furthermore comprises means 60 for controlling the selective distributor 58 and, according to the invention, a regulator 62 for the hydraulic flow rate supplied by the pump.
  • the sheet 50 is constituted by a fluid reservoir 70 maintained at a pressure substantially equal to atmospheric pressure.
  • the reservoir 70 contains a volume of hydraulic fluid greater than at least 1 times the volume of fluid contained in the upstream pipe 54, and in the selective distributor 58.
  • the pump 52 comprises an inlet 72 into which the upstream pipe 54 opens, and an outlet 74 connected to the distributor 58. It is driven for example by a diesel engine.
  • the flow of hydraulic fluid at the outlet 74 of the pump 52 is adjustable, this adjustment being carried out using the regulator 62, as will be seen below.
  • the selective distributor 58 comprises a spool valve 76 for switching, and, connected to the slide valve 76, a pump outlet pipe 78, a first pipe 80 and a second pipe 82 for connection to the motor 56, and a pipe 84 of delivery to the tarpaulin 84.
  • the slide valve 76 is for example a valve type MV18 from the German company Loger, or a valve WM18 from the company LINDE.
  • the slide valve 76 comprises a valve body 86 having four inlets 88A to 88D respectively connected to the tubings 78 to 84. It further comprises a movable slide 90 in the valve body 86 having a hydraulic distribution upper stage 92 for the circulation of the valve. hydraulic fluid in the motor 56 in a first direction, and a lower stage 94 hydraulic distribution for the circulation of the hydraulic fluid in the motor 56 in a second direction.
  • Each stage 92, 94 comprises a supply section 96 connecting the pump outlet tubing 78 and one of the first and second tubings 80 and 82, and an exhaust section 98 connecting the other of the first and second tubings 80. , 82 with the connection pipe to the tank 84.
  • the slide 90 is movable in the valve body 86 between a first activation position of the upper stage 92, in which the upper stage 92 is placed opposite the inputs 88A to 88D and a second activation position of the lower stage 94 in which the lower stage 94 is connected to the inputs 88A to 88D.
  • the feed section 96 of the upper stage 92 connects the outlet pipe of the pump 78 to the first pipe 80, to bring the fluid pumped by the pump through the outlet pipe of the pump.
  • pump 78, the section 96 and the first pipe 80 to a first inlet 100 of the motor 56 and form an intermediate pipe between the outlet 74 of the pump 78 and the first inlet 100 of the motor 56.
  • the evacuation section 98 connects the second pipe 82 to the evacuation pipe 84 to form a downstream pipe 103 between the second inlet 102 of the motor 56 and the tank 50.
  • the lower stage 94 In the first activation position, the lower stage 94 is placed away from the inputs 88A to 88D and is therefore inactive.
  • the supply section 96 of the lower stage 94 connects the pump outlet tubing 78 to the second tubing 82 to create the intermediate conduit between the pump outlet 74 and the second inlet 102. of the motor.
  • the evacuation section 98 connects the first tubing 80 to the evacuation tubing 84 to create a downstream duct extending between the first inlet 100 and the tank 50.
  • the upper stage 92 In the second activation position, the upper stage 92 is placed away from the inputs 88A to 88D and is thus inactive.
  • the displacement of the slide 90 between its first activation position and its second activation position controls the direction of flow of the fluid in the motor 56 and thus the direction of rotation of the drum 42.
  • the discharge pipe 84 is provided with a filter 103 of the hydraulic fluid.
  • the control means 60 comprise the control means of the slide 90 of the valve 16 to move it between its first activation position and its second activation position according to the direction of rotation required on the drum 42.
  • the regulator 62 controls the flow of fluid at the outlet 74 of the pump 52 at any time during the rotation of the motor 56. This control is performed as a function of the load applied to the motor 56 by the drum 42. under the effect of the transmission line to the cable 34.
  • the regulator 62 comprises a calibrated throttle 150 for measuring the applied load, a set 152 for regulating the flow rate of the pump 52, and a servocontrol assembly 154 for the set of setting 152 to control the flow rate at the outlet 74 of the pump 52 by maintaining a constant pressure difference at the ends of the constriction 150.
  • the constriction 150 comprises a valve 157 having a diameter orifice adjustable by the control means 60.
  • the diameter of the orifice is advantageously less than the average diameter of the pipe on which the throttle is mounted.
  • the adjustable orifice valve 157 is placed in the slide valve 76 of the selective distributor 58.
  • an adjustable orifice valve 157 is connected in series with the fluid supply section 96. hydraulic.
  • a calibrated throat 150 is connected in series with the intermediate pipe connecting the outlet 74 of the pump 52 to an inlet 100, 102 of the motor 56 whatever the position of the slide 90 of the valve 76.
  • the throat 150 further comprises an upstream tapping 158 and a downstream tapping 160 to take the pressure respectively upstream and downstream of the valve 157.
  • the tappings 158 and 160 open into the section 96 and are hydraulically connected to the servo assembly 154, for controlling the pump adjustment assembly 152 in accordance with the pressure difference measured at the ends of the adjustable orifice valve 157.
  • the adjustment assembly 152 and the assembly Servo-control 154 are for example integrated within a set HPR105-02 of the German company LINDE.
  • the adjustment assembly 152 comprises a piston 160 for actuating the plate of the pump 52, mounted to move in a cylinder 164 delimiting a circulation chamber 166 of the piston 162.
  • the piston 162 can be moved in the chamber 166 between a first position end, right in Figure 3, wherein the output flow of the pump 52 is maximum and a second end position, left in Figure 3, wherein the output flow of the pump is substantially zero.
  • the piston 162 delimits sealingly in the chamber 166, an upstream region 168 and a downstream region 170.
  • a spring 167 is interposed between the piston 162 and the wall of the cylinder 164 in the upstream region to bias the piston towards the first position. 'end.
  • the upstream region 168 is connected to the outlet 74 of the pump by a pressurization tap 172, so that the pressure in the upstream region 168 is substantially equal to the pressure upstream of the adjustable orifice valve 157.
  • the downstream region 170 is connected to the servocontrol unit 154 by a servocontrol conduit 174.
  • the servocontrol unit 154 comprises a slide regulator 180 which comprises a regulator body 182 and a movable slide 184 controlled by the pressure difference received from the connections 158, 160.
  • Regulator body 182 includes three inputs 186A-186C.
  • the first inlet 186A is connected to the upstream branch 158 by a bifurcation 188 for supplying the regulator 180 with fluid at a pressure substantially equal to the pressure taken upstream of the valve 157.
  • the second inlet 186B is connected to the tank 50 by a discharge pipe 190 for the depressurization of the regulator.
  • the third input 186C is connected to the control line 174 of the adjustment assembly 152.
  • the spool 184 includes a first stage 192 having a connecting portion 194 from the first input 186A to the second input 186C, and a second stage 196 having a connecting portion 198 of the second input 186B to the third input 186C.
  • the slide valve 184 is movable in the valve body between a first regulation position for the activation of the first stage 192, in which the servo-control conduit 174 is connected to the bifurcation 188 to supply this conduit 174 and the downstream region 170 with pressurized fluid, and a second control position for the activation of the second stage 196, in which the servocontrol pipe 174 is connected to the delivery pipe 190 by the section 198 to discharge pressurized fluid contained in the downstream region. 170 to the tarpaulin 50.
  • the displacement of the slide 184 between its regulation positions results from the application of the pressure present in the upstream stitch 158 on a surface of the spool 184 and the application of the pressure present in the downstream stitching 160 on an opposite surface of the spool 184. This displacement is therefore hydraulically controlled.
  • the winch 38 is brought to the vicinity of the wellhead 14.
  • the working line to the cable 36 is partially unwound to pass it in the return pulleys 32, then through the sealing means 30.
  • a tool of intervention 34 is introduced through an airlock provided in the sealing means 30. The tool 34 is then fixed to the free end 40 of the working line to the cable 30.
  • the operator of the intervention device 20 activates the winch 38 to unwind the working line to the cable 36 from the drum 42 and lower the tool 34 into the well.
  • control means 60 acts on the control means 60 to control the drum rotation 42 in a first direction with a view to the unwinding of the line 36.
  • the control means 60 pivot the slide gate valve 76 to move the slide 90 in its first activation position and place the upper stage 92 next to the inputs 88A to 88D.
  • a closed hydraulic circuit on which are mounted in series the pump 52 and the motor 56 is formed between the upstream pipe, the pump 52, the pump outlet tubing 78, the feed section 96 and the first connecting pipe 80 for connecting the motor to the first inlet 100 of the motor 56.
  • the hydraulic fluid pumped by the pump 52 then flows in the motor 56 between the first inlet 100 and the second inlet 102 and is discharged to the tank 50 through the second pipe 82, the exhaust section 98 and the connection pipe to the
  • the flow rate of fluid at the outlet of the pump 74 is regulated automatically by the regulator 62 as a function of the diameter of the orifice of the valve 157.
  • the flow rate of the pump 52 When this difference is greater than an adjustable threshold value, for example 20 bar, the flow rate of the pump 52 must be increased to maintain a constant pressure difference between the taps 158, 160 at the ends of the adjustable orifice valve 157. When the threshold value is exceeded, the hydraulic fluid present in the connections 158, 160 moves the slide 182 to its activation position of the second stage.
  • an adjustable threshold value for example 20 bar
  • the servocontrol duct 174 is then connected to the tank 50 through the section 198.
  • the fluid under pressure present in the downstream region 170 then discharges towards the tank 50, through the discharge pipe 190, which reduces the volume of the downstream region 170.
  • the piston 162 thus moves to the first end position, thereby increasing the flow of fluid at the outlet of the pump 52.
  • the adjustment of the size of the calibrated orifice of the valve 157 by the control means 60 makes it possible to regulate the regulated flow rate of fluid flowing through the motor 56 to increase or decrease the speed of rotation of the drum 42.
  • the downstream fluid evacuation pipe is formed between the first inlet of the motor 100 and the tank 52 through the first pipe 80 and the discharge pipe 84 towards the tarpaulin.
  • the combination of a large volume of available hydraulic fluid and a very reactive regulation by the regulator 62 makes it possible to very rapidly increase the flow of fluid 74 at the outlet of the pump 52 and thus to have sufficient hydraulic power. for rotating the motor 56 at high speed or when the load increases strongly on the drum 42.
  • the regulation offered as a function of the load applied across the throttle 156 by the regulator 62 offers a precise operation, independent of the load, and a controlled displacement of the winch 38 and therefore from the line of work to the cable 36.
  • the intervention device 20 as for the open-circuit winches, has a high hydraulic power to increase very quickly the speed or the load applied on the line of work to the cable 36. It also allows to take advantage of a precise control of the flow of hydraulic fluid passing through the motor 56, similar to that of a winch in a closed circuit when a great precision on the speed of regulation is required.
  • a device for intervention in a well comprising a shuttle intended to be introduced into the well by means of a line of work with the cable and a Operator winch line that works accurately and stably, with reduced energy consumption.
  • the structure of the hydraulic circuit within the plant is also easily modulated to add auxiliary power generation units or other motors in parallel with the winch drive motor.
  • a second motor, an electricity generator or a piston is connected in parallel with the motor.
  • the second device 220 comprises a piston 222 mounted to move in a cylinder 224. Unlike the first device 20, the second device 220 also comprises a selective distributor 258 for controlling the piston which comprises a slide valve 276 switching.
  • the selective distributor 258 comprises, connected to the slide valve 276, an auxiliary pump outlet tubing 278 on the main tubing 78, a first auxiliary tubing 280 and a second auxiliary tubing 282 for connecting to the main tubing 78.
  • the additional slide valve 276 is identical in structure to the slide valve 76.
  • the components of this valve 276 are represented identically in FIG. 4 to the components of the valve 76, with references beginning with the numeral 2.
  • This valve drawer 276 will not be described in detail.
  • the first auxiliary manifold 280 connects the inlet 288B of the valve 276 to a first inlet 2100 of the cylinder 224 located on one side of the piston 222.
  • the second auxiliary manifold 282 connects the inlet 288C of the valve 276 to a second inlet 2102 cylinder 244 located on the other side of the piston 222 relative to the first inlet 2100.
  • control means 60 further comprise means for controlling the slide 290 of the slide valve 276 to move it between a first actuation position of the piston and a second piston activation position, depending on the direction of movement required on the piston 222.
  • An auxiliary calibrated measurement 2150 of the load applied to the piston 222 is mounted in parallel with the calibrated throat 150. This calibrated throat 2150 is located inside the slide valve 276 on the feed section 296.
  • This auxiliary calibrated throat 2150 has a structure similar to that of the calibrated throat 150 and will not be described in detail below.
  • Throttle 150 and auxiliary throttle 2150 are hydraulically connected to servo assembly 154 through upstream stubs 160, 2160 which are interconnected by a directional valve 226.
  • the directional valve 226 is connected by a common upstream stitching 228 to the servo assembly 154.
  • the downstream stitch 158 remains stitched on the pump outlet tubing 78, between the outlet 74 of the pump 52 and the stitching of the pump output auxiliary tubing 278.
  • the directional valve 226 has a logic circuit for selecting at each instant between the upstream tapping 2160 and the auxiliary upstream tapping 160, the one having the highest pressure, and for transmitting this pressure to the servo assembly 154 by the intermediate of the common upstream stitching 228.
  • the adjustment assembly 152 and the servocontrol assembly 154 are also identical to those shown in FIG. 3.
  • the operation of the second device 220 according to the invention is for the rest similar to that of the first device 20.
  • a third device 320 according to the invention is shown in FIG. 6. Unlike the first device 20, the pump 52 delivers a constant output rate.
  • the branch pipe 322 opens into the tank 50 and is adapted to derive an adjustable fraction comprised between 0% and 100% of the output flow of the pump to the tank 50, and thus to deliver to the motor an adjustable flow rate between 100% and 0% of the constant flow rate of the pump.
  • the regulator 62 of the third device 320 comprises a set 152 of the flow control passing through the valve 324, this assembly 152 being controlled by the control unit 154.
  • the control valve 324 is thus compensated for pressure.
  • the regulator 62, and the adjustment set 152 of the fluid flow delivered to the engine, is controlled by the servocontrol unit 154 as a function of a hydraulic fluid pressure depending on the load exerted on the engine, measured by the difference pressure across the throat 150 as previously described.
  • the device 320 thus obtained is much more stable depending on the load, which allows in particular to increase the precision of the displacement of the shuttle 34 in the well.

Abstract

The invention relates to a device including a cable working line having a turnaround and a drawworks for the line. The hydraulic system (46) for the drawworks comprises a tank (50) for storing hydraulic control fluid, a pump (52) for driving the hydraulic fluid and connected to the tank (50) by an upstream pipe (54), and at least one hydraulic motor (56) for driving the drum (42) connected to the pump (52) by an intermediate pipe and connected to the tank (50) by a downstream pipe. The hydraulic system includes a flow regulator (62) for the hydraulic fluid at the outlet of the pump (52). The regulator (62) is controlled on the basis of at least one pressure of the hydraulic fluid depending on the load exerted on the motor (56) by the rotary drum (42), the pressure(s) being taken directly from one of said pipes.

Description

Dispositif d'intervention dans un puits d'exploitation de fluide, installation d'exploitation et procédé associé. Device for intervention in a fluid operating well, operating installation and associated method
La présente invention concerne un dispositif d'intervention dans un puits d'exploitation de fluide, du type comprenant : - une navette portant au moins un outil d'intervention et/ou de mesure, destinée à être introduite dans le puits ;The present invention relates to a device for intervention in a fluid exploitation well, of the type comprising: a shuttle carrying at least one intervention and / or measurement tool, intended to be introduced into the well;
- une ligne de travail au câble portant la navette ;- a cable work line carrying the shuttle;
- un treuil de manœuvre de la ligne, le treuil comprenant un tambour rotatif d'enroulement de la ligne et une centrale hydraulique d'entraînement en rotation du tam- bour, la centrale hydraulique comportant :a winch for maneuvering the line, the winch comprising a rotary drum for winding the line and a hydraulic power unit for driving the drum in rotation, the hydraulic power unit comprising:
• une bâche de stockage d'un fluide hydraulique de commande ;• a storage tank for a hydraulic control fluid;
• une pompe d'entraînement du fluide hydraulique contenu dans la bâche, raccordé à la bâche par une conduite amont ;A pump for driving the hydraulic fluid contained in the tank, connected to the tank by an upstream pipe;
• au moins un moteur hydraulique d'entraînement du tambour raccordé à la pompe par une conduite intermédiaire et raccordé à la bâche par une conduite aval.At least one hydraulic motor for driving the drum connected to the pump via an intermediate pipe and connected to the tank by a downstream pipe.
L'invention s'applique notamment aux opérations qui doivent être effectuées dans le puits à l'aide d'outils attachés à la navette. Ces opérations sont par exemple l'ouverture et la fermeture de vannes, la rupture de goupilles de cisaillement, la réalisation de perforations, la mise en place et le retrait d'outils dans le puits, ou le repêchage d'outils coincés dans le puits (par exemple pose et retrait de mandrins d'ancrage).The invention applies in particular to the operations that must be performed in the well using tools attached to the shuttle. These operations are, for example, the opening and closing of valves, the breaking of shear pins, the production of perforations, the placing and removal of tools in the well, or the retrieval of tools stuck in the well. (eg laying and removing anchor chucks).
Pour réaliser ce type d'opérations, l'outil est monté à l'extrémité libre d'une ligne de travail au câble qui peut être notamment un câble lisse monobrin de type « corde à piano » ou « slickline » mais également un câble toronné dit « braided line » ou « electric line ». Ces câbles sont généralement en acier mais peuvent être revêtu ou en matériau composite. Pour dérouler la ligne de travail au câble, il est connu d'utiliser un treuil qui est amené au voisinage du puits, et qui est manœuvré en rotation pour enrouler et dérouler du câble dans le puits.To perform this type of operation, the tool is mounted at the free end of a cable working line which may be in particular a smooth single-strand cable type "piano wire" or "slickline" but also a stranded cable called "braided line" or "electric line". These cables are generally made of steel but can be coated or composite material. To unwind the line to the cable, it is known to use a winch which is brought to the vicinity of the well, and which is rotated to wind and unroll cable in the well.
A cet effet, les treuils connus comprennent généralement un tambour sur lequel est enroulée la ligne de travail au câble, et une centrale hydraulique d'entraînement en rotation du tambour.For this purpose, the known winches generally comprise a drum on which is wound the working line to the cable, and a hydraulic power unit for rotating the drum.
La centrale hydraulique est dans la plupart des cas de type en « boucle ouverte » (ou « open loop »). Ce type de centrale comprend une bâche de stockage contenant une grande quantité de fluide hydraulique, une conduite hydraulique présentant deux extrémités plongées dans la bâche, une pompe et un moteur montés en série sur la conduite hydraulique. Une dérivation réglable raccorde la sortie de la pompe en amont du moteur à la bâche.The hydraulic unit is in most cases of type "open loop" (or "open loop"). This type of plant comprises a storage tank containing a large amount of hydraulic fluid, a hydraulic pipe having two ends immersed in the sheet, a pump and a motor connected in series on the hydraulic pipe. An adjustable bypass connects the pump outlet upstream of the motor to the tank.
Ce type de centrale fonctionne en actionnant la pompe pour qu'elle délivre en permanence un débit maximal de fluide et en dérivant sélectivement une quantité choisie de fluide hydraulique à travers la dérivation en fonction de la charge et de la vitesse requise sur le moteur.This type of plant operates by operating the pump to continuously deliver a maximum flow of fluid and selectively deriving a selected amount of hydraulic fluid through the bypass depending on the load and the speed required on the engine.
De telles centrales sont donc très réactives en particulier lorsqu'une charge importante doit être exercée sur la ligne de travail au câble, ou lorsqu'une vitesse élevée ou une accélération élevée doit être obtenue très rapidement. Toutefois, ces centrales consomment beaucoup d'énergie et sont peu performantes lorsque le déplacement de la ligne de travail au câble est lent, notamment pour réaliser des diagraphies ou « logging » dans le puits. La conception des dérivations couramment utilisées, à l'aide d'une valve d'une commande directionnelle, est très robuste car on peut passer d'un débit nul à un débit maximal, en une fraction de seconde. Cette conception est cependant très instable avec la variation de pression du circuit induite par les variations de la charge, notamment sur la tension du câble. Il en résulte une instabilité sur le débit et donc sur la vitesse qui peut être problématique pour une opération de logging. D'un point de vue ergonomique, l'utilisation de ce type de circuit hydraulique est également difficile pour l'opérateur car elle nécessite la manipulation simultanée de la vanne de dérivation et du frein lors du battage avec une coulisse ou plus généralement de la vanne de dérivation et du contrôle de pression.Such plants are therefore very reactive especially when a heavy load must be exerted on the cable work line, or when a high speed or high acceleration must be obtained very quickly. However, these plants consume a lot of energy and perform poorly when the movement of the line to cable is slow, especially for logging or "logging" in the well. The design of commonly used taps, using a directional control valve, is very robust because you can go from zero flow to maximum flow, in a fraction of a second. This design is however very unstable with the pressure variation of the circuit induced by the variations of the load, in particular on the tension of the cable. This results in an instability on the bit rate and therefore on the speed which can be problematic for a logging operation. From an ergonomic point of view, the use of this type of hydraulic circuit is also difficult for the operator because it requires the simultaneous manipulation of the bypass valve and the brake when threshing with a slide or more generally the valve bypass and pressure control.
Pour pallier tous ces problèmes, des centrales hydrauliques en boucle fermée (ou « closed loop ») ont également été utilisées. Ce type de centrale est équipé d'une bâche hydraulique à volume réduit. La cylindrée de la pompe est réglable manuellement et les sorties de la pompe sont raccordées directement aux entrées du moteur.To alleviate all these problems, closed loop hydraulic power stations (or "closed loop") have also been used. This type of plant is equipped with a low volume hydraulic tarpaulin. The displacement of the pump is manually adjustable and the pump outputs are connected directly to the motor inputs.
Les centrales en boucle fermée permettent de régler plus précisément la vitesse de déploiement notamment en vitesse lente (10m/mn est la vitesse normale pour une opération de logging), et de limiter la consommation en énergie puisque la pompe n'est alimentée qu'en fonction de la vitesse requise. Toutefois, elles présentent l'inconvénient de ne pas être suffisamment réactives lorsqu'une accélération élevée doit être obtenue rapidement en montée ou en descente. En outre, si plusieurs systèmes sont alimentés simultanément au voisinage du puits, comme par exemple un treuil et un générateur, une pompe d'alimentation hydraulique est requise pour chaque système, ce qui augmente les frais de maintenance et la complexité du circuit hydraulique. Un but de l'invention est donc d'obtenir un dispositif d'intervention dans un puits qui soit très réactif, tout en consommant peu d'énergie et en présentant une bonne précision et une bonne stabilité à basse vitesse quelque soit la charge.The closed-loop power plants make it possible to adjust the speed of deployment more precisely, especially at slow speed (10m / min is the normal speed for a logging operation), and to limit the energy consumption since the pump is powered only by depending on the speed required. However, they have the disadvantage of not being sufficiently reactive when a high acceleration must be obtained quickly upward or downward. In addition, if several systems are fed simultaneously in the vicinity of the well, such as a winch and a generator, a hydraulic supply pump is required for each system, which increases the maintenance costs and the complexity of the hydraulic circuit. An object of the invention is therefore to obtain a response device in a well which is very reactive, while consuming little energy and having good accuracy and good stability at low speed whatever the load.
A cet effet, l'invention a pour objet un dispositif d'intervention du type précité, ca- ractérisé en ce que la centrale hydraulique comprend un régulateur du débit de fluide hydraulique délivré au ou à chaque moteur hydraulique, le régulateur étant piloté en fonction d'au moins une pression de fluide hydraulique dépendant de la charge exercée sur le moteur par le tambour rotatif, la ou chaque pression étant prise directement sur l'une desdites conduites. Le dispositif selon l'invention peut comprendre l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou suivant toute(s) combinaison(s) techniquement possible^) :For this purpose, the subject of the invention is an intervention device of the aforementioned type, characterized in that the hydraulic unit comprises a regulator of the flow of hydraulic fluid delivered to the or each hydraulic motor, the regulator being controlled according to at least one hydraulic fluid pressure depending on the load exerted on the engine by the rotary drum, the or each pressure being taken directly on one of said pipes. The device according to the invention may comprise one or more of the following characteristics, taken in isolation or according to any combination (s) technically possible:
- la centrale hydraulique comprend un étranglement calibré réglable, monté sur la conduite intermédiaire, un piquage amont, et un piquage aval pour prendre la pression en amont et en aval de l'étranglement, le régulateur étant asservi pour maintenir sensiblement constante à une valeur seuil réglable la différence de pression, prise entre les piquages amont et aval ;- The hydraulic unit comprises an adjustable calibrated throat, mounted on the intermediate pipe, an upstream tapping, and a downstream tapping to take the pressure upstream and downstream of the throat, the regulator being slaved to maintain substantially constant at a threshold value. adjustable pressure difference, taken between the upstream and downstream connections;
- le régulateur comprend un ensemble de réglage du débit de la pompe comportant un organe mobile entre une position de débit minimal et une position de débit maxi- mal, le régulateur comprenant un ensemble d'asservissement de l'organe mobile comportant une vanne de régulation présentant un tiroir déplaçable entre une première position de régulation pour le déplacement de l'organe mobile vers la position de débit maximal et une deuxième position de régulation pour le déplacement de l'organe mobile vers la position de débit minimal, le piquage amont et le piquage aval étant raccordés hydrauli- quement à la vanne de régulation pour déplacer le tiroir entre ses positions de régulation en fonction de la différence de pression entre le piquage amont et le piquage aval ;the regulator comprises a pump flow control assembly comprising a movable member between a minimum flow position and a maximum flow position, the regulator comprising a servo assembly of the movable member comprising a control valve; having a slide movable between a first regulating position for moving the movable member to the maximum flow position and a second regulating position for moving the movable member to the minimum flow position, the upstream stitching and the downstream stitching being hydraulically connected to the control valve to move the spool between its control positions according to the pressure difference between the upstream stitching and the downstream stitching;
- l'ensemble de réglage comprend une enceinte délimitant une chambre de réception de l'organe mobile, l'organe mobile définissant dans la chambre une région amont raccordée hydrauliquement à l'une desdites conduites et une région aval raccordée hy- drauliquement à la vanne de régulation, le tiroir dans sa première position étant raccordé à la région aval, pour alimenter la région aval en fluide hydraulique sous pression, et dans sa deuxième position raccordant hydrauliquement la région aval à une bâche à basse pression ; - le dispositif comprend une tubulure de dérivation raccordant la sortie de la pompe à la bâche, le régulateur comprenant une vanne de régulation du débit circulant à travers la tubulure de dérivation ;the adjustment assembly comprises an enclosure delimiting a receiving chamber of the movable member, the movable member defining in the chamber an upstream region hydraulically connected to one of said ducts and a downstream region hydraulically connected to the valve; regulator, the drawer in its first position being connected to the downstream region, for supplying the downstream region with hydraulic fluid under pressure, and in its second position hydraulically connecting the downstream region to a low pressure tank; - The device comprises a branch pipe connecting the output of the pump to the tank, the regulator comprising a flow control valve flowing through the branch pipe;
- la centrale hydraulique comprend une vanne de commutation déplaçable entre une première position d'activation dans laquelle la conduite intermédiaire est formée entre la sortie de la pompe et une première entrée du moteur, et la conduite aval est formée entre une deuxième entrée du moteur et la bâche, et une deuxième position d'activation dans laquelle la conduite intermédiaire est formée entre la deuxième entrée du moteur et la sortie de la pompe et la conduite aval raccorde la première entrée du moteur et la bâ- che ;the hydraulic unit comprises a switching valve movable between a first activation position in which the intermediate pipe is formed between the outlet of the pump and a first inlet of the motor, and the downstream pipe is formed between a second inlet of the motor and the tarpaulin, and a second activation position in which the intermediate pipe is formed between the second inlet of the engine and the outlet of the pump and the downstream pipe connects the first inlet of the engine and the boat;
- l'étranglement calibré est placé dans la vanne de commutation ; et- the calibrated throat is placed in the switching valve; and
- la centrale hydraulique comprend un organe mené hydrauliquement, raccordé à la pompe en parallèle du moteur hydraulique.- The hydraulic unit comprises a hydraulically driven member connected to the pump in parallel with the hydraulic motor.
Ce type de dispositif est compatible en terme de performances à toutes les appli- cations utiles sur le terrain pétrolier : diagraphies (« logging »), travail mécanique au câble standard, repêchage (« fishing »), battage de coulisse, pistonage dans le puits. Il permet, sans compliquer le circuit hydraulique, d'y associer un certain nombre d'accessoires hydrauliques.This type of device is compatible in terms of performance for all applications that are useful in the oil field: logs ("logging"), mechanical work with standard cable, fishing (fishing), threshing, pistoning in the well. . It allows, without complicating the hydraulic circuit, to associate a number of hydraulic accessories.
L'invention a en outre pour objet une installation d'exploitation de fluide, caractéri- se en ce qu'elle comprend :The invention furthermore relates to a fluid exploitation installation, characterized in that it comprises:
• un puits d'exploitation ménagé dans le sol, le puits débouchant en un premier point situé à la surface du sol ;• an operating well in the ground, with the well opening at a first point on the ground surface;
• une tête de puits, obturant le puits au niveau du premier point ; et• a wellhead, closing the well at the first point; and
• et un dispositif d'intervention tel que défini plus haut, la navette et la ligne de travail étant introduites dans le puits à travers la tête de puits.And an intervention device as defined above, the shuttle and the working line being introduced into the well through the wellhead.
L'invention a également pour objet un procédé d'intervention d'un puits d'exploitation, caractérisé en ce qu'il comprend les étapes suivantes :The subject of the invention is also a method for operating an exploitation well, characterized in that it comprises the following steps:
• montage de la navette sur la ligne de travail et introduction de la navette et de la ligne de travail dans le puits ; • actionnement de la centrale hydraulique pour entraîner en rotation le tambour, l'actionnement comprenant :• assembly of the shuttle on the line of work and introduction of the shuttle and the line of work in the well; Actuating the hydraulic unit to drive the drum in rotation, the actuation comprising:
- la mise en œuvre de la pompe pour entraîner le moteur hydraulique par circulation de fluide hydraulique dans lesdites conduites, etthe implementation of the pump for driving the hydraulic motor by circulation of hydraulic fluid in said pipes, and
- la régulation du débit délivré au ou à chaque moteur hydraulique en fonction au moins d'une pression dépendant de la charge exercée sur le moteur par le tambour, la ou chaque pression étant prise directement sur l'une desdites conduites. L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés sur lesquels :regulating the flow rate delivered to the or each hydraulic motor as a function of at least one pressure depending on the load exerted on the motor by the drum, the or each pressure being taken directly on one of said ducts. The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which:
- la Figure 1 est une vue schématique partielle, prise en coupe suivant un plan ver- tical médian, d'une première installation d'exploitation de fluide comprenant un dispositif d'intervention selon l'invention;FIG. 1 is a partial diagrammatic view, taken in section along a median vertical plane, of a first fluid exploitation installation comprising an intervention device according to the invention;
- la Figure 2 est un schéma hydraulique simplifié de la centrale hydraulique d'entraînement du treuil dans le dispositif d'intervention de la Figure 1 ;- Figure 2 is a simplified hydraulic diagram of the hydraulic winch drive in the intervention device of Figure 1;
- la Figure 3 est un schéma hydraulique simplifié du régulateur de débit de la cen- traie hydraulique de la Figure 2 ;Figure 3 is a simplified hydraulic diagram of the flow control valve of the hydraulic power plant of Figure 2;
- la Figure 4 est une vue analogue à la Figure 2 d'un deuxième dispositif d'intervention selon l'invention ;- Figure 4 is a view similar to Figure 2 of a second intervention device according to the invention;
- la Figure 5 est une vue analogue à la Figure 3 du deuxième dispositif d'intervention selon l'invention ; - la Figure 6 est une vue analogue à la Figure 2 d'un troisième dispositif d'intervention selon l'invention.- Figure 5 is a view similar to Figure 3 of the second intervention device according to the invention; - Figure 6 is a view similar to Figure 2 of a third intervention device according to the invention.
Une première installation 10 d'exploitation de fluide selon l'invention est représentée sur la Figure 1. Cette installation 10 comprend un puits 12 d'exploitation d'un fluide contenu dans le sol 18, une tête de puits 14 obturant le puits 12 au niveau de la surface 16 du sol 18, et un dispositif d'intervention 20 selon l'invention pour réaliser des opérations dans le puits 12.A first fluid exploitation installation 10 according to the invention is shown in FIG. 1. This installation 10 comprises a well 12 for exploiting a fluid contained in the soil 18, a wellhead 14 closing the well 12 at the level of the surface 16 of the ground 18, and an intervention device 20 according to the invention for carrying out operations in the well 12.
Le puits 12 est ménagé dans le sol 18 pour raccorder une nappe de fluide à exploiter (non représentée) située en profondeur dans le sol 18 à un premier point 22 situé à la surface. De manière classique, le puits 12 comprend un conduit extérieur 24 dénomméThe well 12 is formed in the ground 18 for connecting a sheet of operating fluid (not shown) located deep in the ground 18 at a first point 22 located on the surface. In a conventional manner, the well 12 comprises an outer conduit 24 called
« cuvelage » et un conduit intérieur 26 dénommé « tube de production » pour convoyer le fluide depuis la nappe jusqu'au premier point 22. Le fluide exploité est par exemple un hydrocarbure, comme du pétrole ou du gaz."Casing" and an inner conduit 26 called "production tube" for conveying the fluid from the web to the first point 22. The fluid used is for example a hydrocarbon, such as oil or gas.
La tête de puits 14 obture sélectivement les conduits 24, 26 au niveau du premier point en surface 22. Elle comprend ainsi un dispositif d'obturation du puits 28 et, pour l'introduction du dispositif d'intervention 20 dans le puits 12, des moyens d'étanchéité 30 et des poulies de guidage 32.The wellhead 14 selectively closes the conduits 24, 26 at the first surface point 22. It thus comprises a device for closing the well 28 and, for the introduction of the intervention device 20 into the well 12, sealing means 30 and guide pulleys 32.
Le dispositif d'intervention 20 comprend une navette 34 destinée à être introduite dans les conduits 24, 26 du puits 12, une ligne 36 de travail au câble pour le déploiement de la navette 34 dans le puits 12, insérée dans le puits à travers la tête de puits 14, et un treuil de manœuvre 38 de la ligne de travail au câble. La navette 34 est de forme généralement allongée. Elle porte par exemple des outils d'intervention dans le puits comme une ancre, une coulisse, un actionneur, une tête explosive, ou encore des outils de mesure comme des capteurs de mesure de la température ou de la pression dans le puits, de capteurs de mesure des propriétés de la forma- tion autour du puits, comme le rayonnement naturel émis par la formation.The intervention device 20 comprises a shuttle 34 intended to be introduced into the conduits 24, 26 of the well 12, a cable working line 36 for the deployment of the shuttle 34 in the well 12, inserted into the well through the wellhead 14, and a winch maneuver 38 from the line of work to the cable. The shuttle 34 is of generally elongate shape. It carries, for example, intervention tools in the well such as an anchor, a slide, an actuator, an explosive head, or measurement tools such as sensors for measuring the temperature or pressure in the well, sensors measuring the properties of the formation around the well, such as the natural radiation emitted by the formation.
Dans cet exemple, la ligne de travail au câble 36 est formée par un câble lisse monobrin plein, dénommé « corde à piano », désigné par le terme anglais « slickline ». Ce câble est réalisé en matériau métallique, tel qu'un acier galvanisé inoxydable (par exemple type 316). Ce câble lisse possède une bonne résistance à la pression et une flexibilité adéquate. Typiquement, ce type de câble est fait d'une force à la rupture de 300 daN à 1 500 daN, de préférence de 600 à 1 000 daN. Il présente une longueur supérieure à 5000 m généralement comprise entre 1000 m et 4000... m en fonction de la profondeur du puits. Certains puits très profonds peuvent atteindre 8000m.In this example, the working line to the cable 36 is formed by a solid single-strand smooth cable, called "piano wire", designated by the English term "slickline". This cable is made of metallic material, such as a galvanized stainless steel (for example type 316). This smooth cable has good pressure resistance and adequate flexibility. Typically, this type of cable is made of a breaking force of 300 daN to 1500 daN, preferably 600 to 1000 daN. It has a length greater than 5000 m generally between 1000 m and 4000 ... m depending on the depth of the well. Some very deep wells can reach 8000m.
En variante, le câble est un câble toronné de type « braided line » ou « electric line ».Alternatively, the cable is a stranded cable type "braided line" or "electric line".
La ligne de travail au câble 36 est déroulée à partir du treuil 38, puis est passée autour des poulies de renvoi 32 avant d'être introduite dans le puits à travers les moyens d'étanchéité 30. La navette 34 est fixée à l'extrémité libre 40 de la ligne 36.The working line to the cable 36 is unwound from the winch 38, then passed around the return pulleys 32 before being introduced into the well through the sealing means 30. The shuttle 34 is fixed at the end free 40 of line 36.
Le treuil 38 comprend un tambour rotatif 42 d'enroulement de la ligne 38, un sup- port 44 de tambour posé sur le sol 18, et une centrale hydraulique 46 d'actionnement et de commande du tambour rotatif 42.The winch 38 comprises a rotary winding drum 42 of the line 38, a drum support 44 placed on the ground 18, and a hydraulic unit 46 for actuating and controlling the rotary drum 42.
Le tambour 42 est monté rotatif autour d'un axe horizontal sur le support 44. Il comprend une surface extérieure sensiblement cylindrique d'enroulement de la ligne 38.The drum 42 is rotatably mounted about a horizontal axis on the support 44. It comprises a substantially cylindrical outer winding surface of the line 38.
La rotation du tambour 42 autour de son axe dans un premier sens enroule la ligne 36 autour du tambour et déplace la navette 34 vers le haut du puits 12, alors que la rotation du tambour 42 autour de son axe dans un deuxième sens déroule la ligne 38 hors du tambour 42 et déplace la navette 34 vers le bas du puits 12.The rotation of the drum 42 about its axis in a first direction winds the line 36 around the drum and moves the shuttle 34 to the top of the well 12, while the rotation of the drum 42 about its axis in a second direction unwinds the line 38 out of the drum 42 and moves the shuttle 34 down the well 12.
Comme illustré par la Figure 2, la centrale hydraulique 36 comprend une bâche 50 de stockage d'un fluide hydraulique d'entraînement, une pompe 52 de déplacement du fluide hydraulique, raccordée à la bâche 50, et un moteur 56 d'entraînement en rotation du tambour 42 raccordé hydrauliquement à la pompe 52 et à la bâche 50 par un distributeur sélectif 58 permettant l'entraînement en rotation du moteur 56 et du tambour 42 dans le premier sens ou dans le deuxième sens.As illustrated in FIG. 2, the hydraulic unit 36 comprises a tank 50 for storing a hydraulic drive fluid, a pump 52 for displacing the hydraulic fluid, connected to the tank 50, and a motor 56 for driving in rotation. drum 42 hydraulically connected to the pump 52 and the tank 50 by a selective distributor 58 for driving in rotation the motor 56 and the drum 42 in the first direction or in the second direction.
La centrale 46 comprend en outre des moyens 60 de commande du distributeur sélectif 58 et, selon l'invention, un régulateur 62 du débit hydraulique fourni par la pompeThe central unit 46 furthermore comprises means 60 for controlling the selective distributor 58 and, according to the invention, a regulator 62 for the hydraulic flow rate supplied by the pump.
52, piloté en fonction d'une différence de pression du fluide hydraulique d'entraînement, laquelle différence de pression dépend de la charge exercée sur le moteur 56 par le tambour rotatif 42.52, controlled according to a pressure difference of the driving hydraulic fluid, which pressure difference depends on the load exerted on the motor 56 by the rotary drum 42.
La bâche 50 est constituée par un réservoir de fluide 70 maintenu à une pression sensiblement égale à la pression atmosphérique. Le réservoir 70 contient un volume de fluide hydraulique supérieur à au moins 1 fois le volume de fluide contenu dans la conduite amont 54, et dans le distributeur sélectif 58.The sheet 50 is constituted by a fluid reservoir 70 maintained at a pressure substantially equal to atmospheric pressure. The reservoir 70 contains a volume of hydraulic fluid greater than at least 1 times the volume of fluid contained in the upstream pipe 54, and in the selective distributor 58.
La pompe 52 comprend une entrée 72 dans laquelle débouche la conduite amont 54, et une sortie 74 raccordée au distributeur 58. Elle est entraînée par exemple par un moteur diesel. Le débit de fluide hydraulique à la sortie 74 de la pompe 52 est réglable, ce réglage étant effectué à l'aide du régulateur 62, comme on le verra plus bas.The pump 52 comprises an inlet 72 into which the upstream pipe 54 opens, and an outlet 74 connected to the distributor 58. It is driven for example by a diesel engine. The flow of hydraulic fluid at the outlet 74 of the pump 52 is adjustable, this adjustment being carried out using the regulator 62, as will be seen below.
Le distributeur sélectif 58 comprend une vanne tiroir 76 de commutation, et, raccordés à la vanne tiroir 76, une tubulure 78 de sortie de pompe 52, une première tubulure 80 et une deuxième tubulure 82 de raccordement au moteur 56, et une tubulure 84 de refoulement vers la bâche 84. La vanne tiroir 76 est par exemple une vanne du type MV18 de la société allemande BÛCHER, ou une vanne WM18 de la société LINDE.The selective distributor 58 comprises a spool valve 76 for switching, and, connected to the slide valve 76, a pump outlet pipe 78, a first pipe 80 and a second pipe 82 for connection to the motor 56, and a pipe 84 of delivery to the tarpaulin 84. The slide valve 76 is for example a valve type MV18 from the German company Loger, or a valve WM18 from the company LINDE.
La vanne tiroir 76 comprend un corps de vanne 86 présentant quatre entrées 88A à 88D raccordées respectivement aux tubulures 78 à 84. Elle comprend en outre un tiroir mobile 90 dans le corps de vanne 86 présentant un étage supérieur 92 de distribution hydraulique pour la circulation du fluide hydraulique dans le moteur 56 dans un premier sens, et un étage inférieur 94 de distribution hydraulique pour la circulation du fluide hydraulique dans le moteur 56 dans un deuxième sens.The slide valve 76 comprises a valve body 86 having four inlets 88A to 88D respectively connected to the tubings 78 to 84. It further comprises a movable slide 90 in the valve body 86 having a hydraulic distribution upper stage 92 for the circulation of the valve. hydraulic fluid in the motor 56 in a first direction, and a lower stage 94 hydraulic distribution for the circulation of the hydraulic fluid in the motor 56 in a second direction.
Chaque étage 92, 94 comprend un tronçon 96 d'alimentation raccordant la tubulure de sortie de pompe 78 et l'une des première et deuxième tubulures 80 et 82, et un tronçon d'évacuation 98 raccordant l'autre des première et deuxième tubulures 80, 82 avec la tubulure de raccordement à la bâche 84.Each stage 92, 94 comprises a supply section 96 connecting the pump outlet tubing 78 and one of the first and second tubings 80 and 82, and an exhaust section 98 connecting the other of the first and second tubings 80. , 82 with the connection pipe to the tank 84.
Le tiroir 90 est déplaçable dans le corps de vanne 86 entre une première position d'activation de l'étage supérieur 92, dans laquelle l'étage supérieur 92 est placé en regard des entrées 88A à 88D et une deuxième position d'activation de l'étage inférieur 94 dans laquelle l'étage inférieur 94 est raccordé aux entrées 88A à 88D.The slide 90 is movable in the valve body 86 between a first activation position of the upper stage 92, in which the upper stage 92 is placed opposite the inputs 88A to 88D and a second activation position of the lower stage 94 in which the lower stage 94 is connected to the inputs 88A to 88D.
Dans la première position d'activation, le tronçon d'alimentation 96 de l'étage supérieur 92 raccorde la tubulure de sortie de la pompe 78 à la première tubulure 80, pour amener le fluide pompé par la pompe à travers la tubulure de sortie de pompe 78, le tronçon 96 et la première tubulure 80 jusqu'à une première entrée 100 du moteur 56 et former un conduit intermédiaire entre la sortie 74 de la pompe 78 et la première entrée 100 du moteur 56. Dans cette position, le tronçon d'évacuation 98 raccorde la deuxième tubulure 82 à la tubulure d'évacuation 84 pour former un conduit aval 103 entre la deuxième entrée 102 du moteur 56 et la bâche 50.In the first activation position, the feed section 96 of the upper stage 92 connects the outlet pipe of the pump 78 to the first pipe 80, to bring the fluid pumped by the pump through the outlet pipe of the pump. pump 78, the section 96 and the first pipe 80 to a first inlet 100 of the motor 56 and form an intermediate pipe between the outlet 74 of the pump 78 and the first inlet 100 of the motor 56. In this position, the evacuation section 98 connects the second pipe 82 to the evacuation pipe 84 to form a downstream pipe 103 between the second inlet 102 of the motor 56 and the tank 50.
Dans la première position d'activation, l'étage inférieur 94 est placé à l'écart des entrées 88A à 88D et est donc inactif.In the first activation position, the lower stage 94 is placed away from the inputs 88A to 88D and is therefore inactive.
Dans la deuxième position d'activation, le tronçon d'alimentation 96 de l'étage inférieur 94 raccorde la tubulure de sortie de pompe 78 à la deuxième tubulure 82 pour créer le conduit intermédiaire entre la sortie de la pompe 74 et la deuxième entrée 102 du moteur. De même, le tronçon d'évacuation 98 raccorde la première tubulure 80 à la tubulure d'évacuation 84 pour créer un conduit aval s'étendant entre la première entrée 100 et la bâche 50.In the second activation position, the supply section 96 of the lower stage 94 connects the pump outlet tubing 78 to the second tubing 82 to create the intermediate conduit between the pump outlet 74 and the second inlet 102. of the motor. Similarly, the evacuation section 98 connects the first tubing 80 to the evacuation tubing 84 to create a downstream duct extending between the first inlet 100 and the tank 50.
Dans la deuxième position d'activation, l'étage supérieur 92 est placé à l'écart des entrées 88A à 88D et est donc inactif. Ainsi, le déplacement du tiroir 90 entre sa première position d'activation et sa deuxième position d'activation commande le sens de circulation du fluide dans le moteur 56 et donc le sens de rotation du tambour 42.In the second activation position, the upper stage 92 is placed away from the inputs 88A to 88D and is thus inactive. Thus, the displacement of the slide 90 between its first activation position and its second activation position controls the direction of flow of the fluid in the motor 56 and thus the direction of rotation of the drum 42.
La tubulure de refoulement 84 est munie d'un filtre 103 du fluide hydraulique. Les moyens de commande 60 comprennent les moyens de pilotage du tiroir 90 de la vanne 16 pour le déplacer entre sa première position d'activation et sa deuxième position d'activation en fonction du sens de rotation requis sur le tambour 42.The discharge pipe 84 is provided with a filter 103 of the hydraulic fluid. The control means 60 comprise the control means of the slide 90 of the valve 16 to move it between its first activation position and its second activation position according to the direction of rotation required on the drum 42.
Selon l'invention, le régulateur 62 pilote le débit de fluide à la sortie 74 de la pompe 52 à tout instant lors de la rotation du moteur 56. Ce pilotage est effectué en fonction de la charge appliquée sur le moteur 56 par le tambour 42 sous l'effet de la ligne de transport au câble 34.According to the invention, the regulator 62 controls the flow of fluid at the outlet 74 of the pump 52 at any time during the rotation of the motor 56. This control is performed as a function of the load applied to the motor 56 by the drum 42. under the effect of the transmission line to the cable 34.
A cet effet, comme illustré par la Figure 3, le régulateur 62 comprend un étranglement calibré 150 de mesure de la charge appliquée, un ensemble 152 du réglage du débit de la pompe 52, et un ensemble d'asservissement 154 de l'ensemble de réglage 152 pour asservir le débit à la sortie 74 de la pompe 52 en maintenant une différence de pression constante aux extrémités de l'étranglement 150.For this purpose, as illustrated in FIG. 3, the regulator 62 comprises a calibrated throttle 150 for measuring the applied load, a set 152 for regulating the flow rate of the pump 52, and a servocontrol assembly 154 for the set of setting 152 to control the flow rate at the outlet 74 of the pump 52 by maintaining a constant pressure difference at the ends of the constriction 150.
L'étranglement 150 comprend une vanne 157 présentant un orifice de diamètre réglable par les moyens de commande 60. Le diamètre de l'orifice est avantageusement inférieur au diamètre moyen de la conduite sur laquelle est monté l'étranglement.The constriction 150 comprises a valve 157 having a diameter orifice adjustable by the control means 60. The diameter of the orifice is advantageously less than the average diameter of the pipe on which the throttle is mounted.
Dans cet exemple, la vanne à orifice réglable 157 est placée dans la vanne tiroir 76 du distributeur sélectif 58. Ainsi, pour chaque étage 92 et 94, une vanne à orifice réglable 157 est montée en série sur le tronçon d'alimentation 96 en fluide hydraulique. De ce fait, un étranglement calibré 150 est monté en série sur la conduite intermédiaire raccordant la sortie 74 de la pompe 52 à une entrée 100, 102 du moteur 56 quelle que soit la position du tiroir 90 de la vanne 76.In this example, the adjustable orifice valve 157 is placed in the slide valve 76 of the selective distributor 58. Thus, for each stage 92 and 94, an adjustable orifice valve 157 is connected in series with the fluid supply section 96. hydraulic. Of therefore, a calibrated throat 150 is connected in series with the intermediate pipe connecting the outlet 74 of the pump 52 to an inlet 100, 102 of the motor 56 whatever the position of the slide 90 of the valve 76.
Comme illustré par la Figure 3, l'étranglement 150 comprend en outre un piquage amont 158 et un piquage aval 160 pour prendre la pression respectivement en amont et en aval de la vanne 157. Les piquages 158 et 160 débouchent dans le tronçon 96 et sont raccordés hydrauliquement à l'ensemble d'asservissement 154, pour asservir l'ensemble de réglage 152 de la pompe en fonction de la différence de pression mesurée aux extrémités de la vanne à orifice réglable 157. L'ensemble de réglage 152 et l'ensemble d'asservissement 154 sont par exemple intégrés au sein d'un ensemble HPR105-02 de la société allemande LINDE.As illustrated in FIG. 3, the throat 150 further comprises an upstream tapping 158 and a downstream tapping 160 to take the pressure respectively upstream and downstream of the valve 157. The tappings 158 and 160 open into the section 96 and are hydraulically connected to the servo assembly 154, for controlling the pump adjustment assembly 152 in accordance with the pressure difference measured at the ends of the adjustable orifice valve 157. The adjustment assembly 152 and the assembly Servo-control 154 are for example integrated within a set HPR105-02 of the German company LINDE.
L'ensemble de réglage 152 comprend un piston 160 d'actionnement du plateau de la pompe 52, monté mobile dans un cylindre 164 délimitant une chambre de circulation 166 du piston 162. Le piston 162 est déplaçable dans la chambre 166 entre une première position d'extrémité, à droite sur la Figure 3, dans laquelle le débit en sortie de la pompe 52 est maximal et une deuxième position d'extrémité, à gauche sur la Figure 3, dans laquelle le débit en sortie de la pompe est sensiblement nul.The adjustment assembly 152 comprises a piston 160 for actuating the plate of the pump 52, mounted to move in a cylinder 164 delimiting a circulation chamber 166 of the piston 162. The piston 162 can be moved in the chamber 166 between a first position end, right in Figure 3, wherein the output flow of the pump 52 is maximum and a second end position, left in Figure 3, wherein the output flow of the pump is substantially zero.
Le piston 162 délimite de manière étanche dans la chambre 166, une région amont 168 et une région aval 170. Un ressort 167 est interposé entre le piston 162 et la paroi du cylindre 164 dans la région amont pour solliciter le piston vers la première position d'extrémité.The piston 162 delimits sealingly in the chamber 166, an upstream region 168 and a downstream region 170. A spring 167 is interposed between the piston 162 and the wall of the cylinder 164 in the upstream region to bias the piston towards the first position. 'end.
La région amont 168 est raccordée à la sortie 74 de la pompe par un piquage 172 de mise en pression, pour que la pression dans la région amont 168 soit sensiblement égale à la pression en amont de la vanne à orifice réglable 157.The upstream region 168 is connected to the outlet 74 of the pump by a pressurization tap 172, so that the pressure in the upstream region 168 is substantially equal to the pressure upstream of the adjustable orifice valve 157.
La région aval 170 est raccordée à l'ensemble d'asservissement 154 par une conduite d'asservissement 174.The downstream region 170 is connected to the servocontrol unit 154 by a servocontrol conduit 174.
L'ensemble d'asservissement 154 comprend un régulateur à tiroir 180 qui comporte un corps de régulateur 182 et un tiroir mobile 184 piloté sous l'effet de la différence de pression reçue des piquages 158, 160.The servocontrol unit 154 comprises a slide regulator 180 which comprises a regulator body 182 and a movable slide 184 controlled by the pressure difference received from the connections 158, 160.
Le corps de régulateur 182 comprend trois entrées 186A à 186C. La première entrée 186A est raccordée au piquage amont 158 par une bifurcation 188 pour l'alimentation du régulateur 180 en fluide à une pression sensiblement égale à la pression prise en amont de la vanne 157. La deuxième entrée 186B est raccordée à la bâche 50 par une tubulure de décharge 190 pour la dépressurisation du régulateur. La troisième entrée 186C est raccordée à la conduite d'asservissement 174 de l'ensemble de réglage 152.Regulator body 182 includes three inputs 186A-186C. The first inlet 186A is connected to the upstream branch 158 by a bifurcation 188 for supplying the regulator 180 with fluid at a pressure substantially equal to the pressure taken upstream of the valve 157. The second inlet 186B is connected to the tank 50 by a discharge pipe 190 for the depressurization of the regulator. The third input 186C is connected to the control line 174 of the adjustment assembly 152.
Le tiroir 184 comprend un premier étage 192 présentant un tronçon de raccordement 194 de la première entrée 186A à la deuxième entrée 186C, et un deuxième étage 196 présentant un tronçon 198 de raccordement de la deuxième entrée 186B à la troisième entrée 186C.The spool 184 includes a first stage 192 having a connecting portion 194 from the first input 186A to the second input 186C, and a second stage 196 having a connecting portion 198 of the second input 186B to the third input 186C.
Le tiroir 184 est mobile dans le corps de vanne entre une première position de régulation pour l'activation du premier étage 192, dans laquelle la conduite d'asservissement 174 est raccordée à la bifurcation 188 pour alimenter cette conduite 174 et la région aval 170 en fluide sous pression, et une deuxième position de régulation pour l'activation du deuxième étage 196, dans laquelle la conduite d'asservissement 174 est raccordée à la tubulure de refoulement 190 par le tronçon 198 pour refouler du fluide sous pression contenu dans la région aval 170 vers la bâche 50.The slide valve 184 is movable in the valve body between a first regulation position for the activation of the first stage 192, in which the servo-control conduit 174 is connected to the bifurcation 188 to supply this conduit 174 and the downstream region 170 with pressurized fluid, and a second control position for the activation of the second stage 196, in which the servocontrol pipe 174 is connected to the delivery pipe 190 by the section 198 to discharge pressurized fluid contained in the downstream region. 170 to the tarpaulin 50.
Le déplacement du tiroir 184 entre ses positions de régulation résulte de l'application de la pression présente dans le piquage amont 158 sur une surface du tiroir 184 et de l'application de la pression présente dans le piquage aval 160 sur une surface opposée du tiroir 184. Ce déplacement est donc commandé hydrauliquement.The displacement of the slide 184 between its regulation positions results from the application of the pressure present in the upstream stitch 158 on a surface of the spool 184 and the application of the pressure present in the downstream stitching 160 on an opposite surface of the spool 184. This displacement is therefore hydraulically controlled.
Le fonctionnement du dispositif d'intervention 20 selon l'invention lors d'une intervention au sein de la première installation 10 d'exploitation de fluide va maintenant être décrit.The operation of the intervention device 20 according to the invention during an intervention within the first fluid exploitation installation 10 will now be described.
Initialement, le treuil 38 est amené au voisinage de la tête de puits 14. La ligne de travail au câble 36 est déroulée partiellement pour la faire passer dans les poulies de renvoi 32, puis à travers les moyens d'étanchéité 30. Un outil d'intervention 34 est introduit à travers un sas prévu dans les moyens d'étanchéité 30. L'outil 34 est alors fixé à l'extrémité libre 40 de la ligne de travail au câble 30.Initially, the winch 38 is brought to the vicinity of the wellhead 14. The working line to the cable 36 is partially unwound to pass it in the return pulleys 32, then through the sealing means 30. A tool of intervention 34 is introduced through an airlock provided in the sealing means 30. The tool 34 is then fixed to the free end 40 of the working line to the cable 30.
Puis, l'opérateur du dispositif d'intervention 20 active le treuil 38 pour dérouler la ligne de travail au câble 36 hors du tambour 42 et faire descendre l'outil 34 dans le puits.Then, the operator of the intervention device 20 activates the winch 38 to unwind the working line to the cable 36 from the drum 42 and lower the tool 34 into the well.
A cet effet, il agit sur les moyens de commande 60 pour piloter la rotation de tambour 42 dans un premier sens en vue du déroulement de la ligne 36. Ainsi, les moyens de commande 60 pivotent la vanne tiroir de commutation 76 pour déplacer le tiroir 90 dans sa première position d'activation et placer l'étage supérieur 92 en regard des entrées 88A à 88D.For this purpose, it acts on the control means 60 to control the drum rotation 42 in a first direction with a view to the unwinding of the line 36. Thus, the control means 60 pivot the slide gate valve 76 to move the slide 90 in its first activation position and place the upper stage 92 next to the inputs 88A to 88D.
Dans cette configuration, un circuit hydraulique fermé, sur lequel sont montés en série la pompe 52 et le moteur 56 est formé entre la conduite amont, la pompe 52, la tu- bulure de sortie de pompe 78, le tronçon 96 d'alimention et la première tubulure 80 de raccordement au moteur jusqu'à la première entrée 100 du moteur 56. Le fluide hydrauli- que pompé par la pompe 52 circule alors dans le moteur 56 entre la première entrée 100 et la deuxième entrée 102 et est déchargé vers la bâche 50 à la travers la deuxième tubulure 82, le tronçon d'évacuation 98 et la tubulure de raccordement à la bâche 84 en passant par le filtre 103. Le débit de fluide à la sortie de la pompe 74 est régulé automatiquement par le régulateur 62 en fonction du diamètre de l'orifice de la vanne 157. A cet effet, lorsque la charge augmente fortement sur le moteur 42, la différence de pression aux bornes de la vanne à orifice réglable 157 diminue et est captée par les piquages 158, 160. Cette différence de pression est transmise hydrauliquement à l'ensemble de régulation 180 pour piloter le déplacement du tiroir 184 de sa position d'activation du premier étage 192 vers sa position d'activation du deuxième étage 196.In this configuration, a closed hydraulic circuit, on which are mounted in series the pump 52 and the motor 56 is formed between the upstream pipe, the pump 52, the pump outlet tubing 78, the feed section 96 and the first connecting pipe 80 for connecting the motor to the first inlet 100 of the motor 56. The hydraulic fluid pumped by the pump 52 then flows in the motor 56 between the first inlet 100 and the second inlet 102 and is discharged to the tank 50 through the second pipe 82, the exhaust section 98 and the connection pipe to the The flow rate of fluid at the outlet of the pump 74 is regulated automatically by the regulator 62 as a function of the diameter of the orifice of the valve 157. For this purpose, when the load increases strongly on the the motor 42, the pressure difference across the adjustable orifice valve 157 decreases and is sensed by the taps 158, 160. This pressure difference is transmitted hydraulically to the control assembly 180 to control the movement of the drawer 184 of its activation position of the first stage 192 to its activation position of the second stage 196.
Lorsque cette différence est supérieure à une valeur seuil réglable, par exemple 20 bars, le débit de la pompe 52 doit être augmenté pour maintenir une différence de pression constante entre les piquages 158, 160 aux extrémités de la vanne à orifice ré- glable 157. Lorsque la valeur seuil est dépassée, le fluide hydraulique présent dans les piquages 158, 160 déplace le tiroir 182 vers sa position d'activation du deuxième étage.When this difference is greater than an adjustable threshold value, for example 20 bar, the flow rate of the pump 52 must be increased to maintain a constant pressure difference between the taps 158, 160 at the ends of the adjustable orifice valve 157. When the threshold value is exceeded, the hydraulic fluid present in the connections 158, 160 moves the slide 182 to its activation position of the second stage.
La conduite d'asservissement 174 est alors raccordée à la bâche 50 à travers le tronçon 198. Le fluide sous pression présent dans la région aval 170 se décharge alors vers la bâche 50, à travers la tubulure de décharge 190, ce qui diminue le volume de la région aval 170. Le piston 162 se déplace ainsi vers la première position d'extrémité, augmentant ainsi le débit de fluide en sortie de la pompe 52.The servocontrol duct 174 is then connected to the tank 50 through the section 198. The fluid under pressure present in the downstream region 170 then discharges towards the tank 50, through the discharge pipe 190, which reduces the volume of the downstream region 170. The piston 162 thus moves to the first end position, thereby increasing the flow of fluid at the outlet of the pump 52.
Au contraire, lorsque la différence de pression aux bornes de la vanne à orifice réglable 157 augmente au-delà de la valeur seuil, le tiroir 184 se déplace vers la position d'activation du premier étage 192, ce qui provoque le raccordement de la bifurcation 188 à la conduite d'asservissement 174. Le fluide sous pression présent dans la bifurcation 188 est alors introduit dans la région aval 170, provoquant le déplacement du piston 162 vers sa deuxième position d'extrémité et la diminution du débit de sortie de la pompe 52.On the contrary, when the pressure difference across the adjustable orifice valve 157 increases beyond the threshold value, the spool 184 moves to the activation position of the first stage 192, causing the bifurcation to be connected. 188 to the servocontrol pipe 174. The pressurized fluid present in the bifurcation 188 is then introduced into the downstream region 170, causing the piston 162 to move towards its second end position and the decrease in the outlet flow rate of the pump 52.
En outre, le réglage de la taille de l'orifice calibré de la vanne 157 par les moyens de commande 60 permet de régler le débit régulé de fluide circulant à travers le moteur 56 pour augmenter ou diminuer la vitesse de rotation du tambour 42.In addition, the adjustment of the size of the calibrated orifice of the valve 157 by the control means 60 makes it possible to regulate the regulated flow rate of fluid flowing through the motor 56 to increase or decrease the speed of rotation of the drum 42.
Pour remonter la ligne 30 en l'enroulant autour du tambour 42, l'opérateur actionne les moyens de commande 60 pour déplacer le tiroir 90 de la vanne 76 vers sa deuxième position d'activation, dans laquelle l'étage inférieur 94 est raccordé aux entrées 88A à 88D. Dans cette configuration, le conduit intermédiaire raccordant la sortie de la pompeTo raise the line 30 by winding it around the drum 42, the operator actuates the control means 60 to move the slide 90 of the valve 76 towards its second activation position, in which the lower stage 94 is connected to the inputs 88A to 88D. In this configuration, the intermediate pipe connecting the outlet of the pump
74 au moteur 56 est formé à travers la tubulure de sortie de pompe 78, et la deuxième tubulure 82 de raccordement au moteur, jusqu'à la deuxième entrée 102. La conduite aval d'évacuation de fluide est formée entre la première entrée du moteur 100 et la bâche 52 à travers la première tubulure 80 et la tubulure 84 de refoulement vers la bâche.74 to the motor 56 is formed through the pump outlet tubing 78, and the second tubing 82 for connection to the engine, to the second inlet 102. The downstream fluid evacuation pipe is formed between the first inlet of the motor 100 and the tank 52 through the first pipe 80 and the discharge pipe 84 towards the tarpaulin.
La combinaison d'un volume important de fluide hydraulique disponible et d'une régulation très réactive par le régulateur 62 permet d'augmenter très rapidement le débit de fluide 74 à la sortie de la pompe 52 et de disposer ainsi d'une puissance hydraulique suffisante pour entraîner en rotation le moteur 56 à grande vitesse ou lorsque la charge augmente fortement sur le tambour 42.The combination of a large volume of available hydraulic fluid and a very reactive regulation by the regulator 62 makes it possible to very rapidly increase the flow of fluid 74 at the outlet of the pump 52 and thus to have sufficient hydraulic power. for rotating the motor 56 at high speed or when the load increases strongly on the drum 42.
Par ailleurs, lorsque le moteur 56 fonctionne en régime lent, la régulation offerte en fonction de la charge appliquée aux bornes de l'étranglement 156 par le régulateur 62 offre un fonctionnement précis, indépendant de la charge, et un déplacement contrôlé du treuil 38 et donc de la ligne de travail au câble 36.On the other hand, when the motor 56 is operating slowly, the regulation offered as a function of the load applied across the throttle 156 by the regulator 62 offers a precise operation, independent of the load, and a controlled displacement of the winch 38 and therefore from the line of work to the cable 36.
Le dispositif d'intervention 20 selon l'invention, comme pour les treuils en circuit ouvert, dispose d'une puissance hydraulique élevée pour augmenter très rapidement la vitesse ou la charge appliquée sur la ligne de travail au câble 36. Il permet également de profiter d'une régulation précise du débit de fluide hydraulique passant à travers le moteur 56, semblable à celle d'un treuil en circuit fermé lorsqu'une grande précision sur la vitesse de régulation est requise.The intervention device 20 according to the invention, as for the open-circuit winches, has a high hydraulic power to increase very quickly the speed or the load applied on the line of work to the cable 36. It also allows to take advantage of a precise control of the flow of hydraulic fluid passing through the motor 56, similar to that of a winch in a closed circuit when a great precision on the speed of regulation is required.
Grâce à l'invention qui vient d'être décrite, il est donc possible de disposer d'un dispositif d'intervention dans un puits comprenant une navette destinée à être introduite dans le puits au moyen d'un ligne de travail au câble et un treuil de manoeuvre de la ligne qui fonctionne de manière précise et stable, avec une consommation d'énergie réduite.Thanks to the invention which has just been described, it is therefore possible to have a device for intervention in a well comprising a shuttle intended to be introduced into the well by means of a line of work with the cable and a Operator winch line that works accurately and stably, with reduced energy consumption.
La structure du circuit hydraulique au sein de la centrale est également facilement modulable pour ajouter des organes auxiliaires de génération d'énergie ou d'autres mo- teurs en parallèle du moteur d'entraînement du treuil.The structure of the hydraulic circuit within the plant is also easily modulated to add auxiliary power generation units or other motors in parallel with the winch drive motor.
Ainsi, dans un deuxième dispositif 220 selon l'invention, un deuxième moteur, un générateur d'électricité ou un piston est monté en parallèle du moteur.Thus, in a second device 220 according to the invention, a second motor, an electricity generator or a piston is connected in parallel with the motor.
Dans l'exemple représenté sur les figures 4 et 5, le deuxième dispositif 220 comprend un piston 222 monté mobile dans un cylindre 224. A la différence du premier dispositif 20, le deuxième dispositif 220 comprend également un distributeur sélectif 258 pour la commande du piston qui comporte une vanne tiroir 276 de commutation.In the example shown in FIGS. 4 and 5, the second device 220 comprises a piston 222 mounted to move in a cylinder 224. Unlike the first device 20, the second device 220 also comprises a selective distributor 258 for controlling the piston which comprises a slide valve 276 switching.
Le distributeur sélectif 258 comprend, raccordées à la vanne tiroir 276, une tubulure 278 auxiliaire de sortie de pompe piquée sur la tubulure principale 78, une première tubulure auxiliaire 280 et une deuxième tubulure auxiliaire 282 pour le raccordement au cylindre 224 et une tubulure 284 auxiliaire de raccordement à la bâche 50, piquée sur la tubulure principale 84 de raccordement à la bâche en amont du filtre 103.The selective distributor 258 comprises, connected to the slide valve 276, an auxiliary pump outlet tubing 278 on the main tubing 78, a first auxiliary tubing 280 and a second auxiliary tubing 282 for connecting to the main tubing 78. cylinder 224 and a tubing 284 auxiliary connection to the tank 50, stitched on the main pipe 84 for connection to the tank upstream of the filter 103.
La vanne tiroir additionnelle 276 est de structure identique à la vanne tiroir 76. Ainsi, les composants de cette vanne 276 sont représentés de manière identique sur la figure 4 aux composants de la vanne 76, avec des références commençant par le chiffre 2. Cette vanne tiroir 276 ne sera donc pas décrite en détail.The additional slide valve 276 is identical in structure to the slide valve 76. Thus, the components of this valve 276 are represented identically in FIG. 4 to the components of the valve 76, with references beginning with the numeral 2. This valve drawer 276 will not be described in detail.
La première tubulure auxiliaire 280 raccorde l'entrée 288B de la vanne 276 à une première entrée 2100 du cylindre 224 située d'un côté du piston 222. La deuxième tubulure auxiliaire 282 raccorde l'entrée 288C de la vanne 276 à une deuxième entrée 2102 du cylindre 244 située d'un autre côté du piston 222 par rapport à la première entrée 2100.The first auxiliary manifold 280 connects the inlet 288B of the valve 276 to a first inlet 2100 of the cylinder 224 located on one side of the piston 222. The second auxiliary manifold 282 connects the inlet 288C of the valve 276 to a second inlet 2102 cylinder 244 located on the other side of the piston 222 relative to the first inlet 2100.
A la différence du premier dispositif 10, les moyens de commande 60 comprennent en outre des moyens de pilotage du tiroir 290 de la vanne tiroir 276 pour la déplacer entre une première position d'activation du piston et une deuxième position d'activation du piston, en fonction du sens de déplacement requis sur le piston 222.Unlike the first device 10, the control means 60 further comprise means for controlling the slide 290 of the slide valve 276 to move it between a first actuation position of the piston and a second piston activation position, depending on the direction of movement required on the piston 222.
Un étranglement calibré 2150 auxiliaire de mesure de la charge appliquée sur le piston 222, est monté en parallèle de l'étranglement calibré 150. Cet étranglement calibré 2150 est situé à l'intérieur de la valve tiroir 276 sur le tronçon d'alimentation 296.An auxiliary calibrated measurement 2150 of the load applied to the piston 222, is mounted in parallel with the calibrated throat 150. This calibrated throat 2150 is located inside the slide valve 276 on the feed section 296.
Cet étranglement calibré auxiliaire 2150 présente une structure analogue à celui de l'étranglement calibré 150 et ne sera pas décrit en détail plus bas.This auxiliary calibrated throat 2150 has a structure similar to that of the calibrated throat 150 and will not be described in detail below.
L'étranglement 150 et l'étranglement auxiliaire 2150 sont raccordés hydraulique- ment à l'ensemble d'asservissement 154 par l'intermédiaire de piquages amont 160, 2160 qui sont raccordés entre eux par une valve directionnelle 226.Throttle 150 and auxiliary throttle 2150 are hydraulically connected to servo assembly 154 through upstream stubs 160, 2160 which are interconnected by a directional valve 226.
La valve directionnelle 226 est raccordée par un piquage amont commun 228 à l'ensemble d'asservissement 154.The directional valve 226 is connected by a common upstream stitching 228 to the servo assembly 154.
Comme dans le premier dispositif 20, le piquage aval 158 reste piqué sur la tubulure de sortie de pompe 78, entre la sortie 74 de la pompe 52 et le piquage de la tubulure auxiliaire de sortie de pompe 278.As in the first device 20, the downstream stitch 158 remains stitched on the pump outlet tubing 78, between the outlet 74 of the pump 52 and the stitching of the pump output auxiliary tubing 278.
La valve directionnelle 226 possède un circuit logique pour sélectionner à chaque instant entre le piquage amont 2160 et le piquage amont auxiliaire 160, celui qui présente la pression la plus élevée, et pour transmettre cette pression à l'ensemble d'asservissement 154 par l'intermédiaire du piquage amont commun 228.The directional valve 226 has a logic circuit for selecting at each instant between the upstream tapping 2160 and the auxiliary upstream tapping 160, the one having the highest pressure, and for transmitting this pressure to the servo assembly 154 by the intermediate of the common upstream stitching 228.
L'ensemble de réglage 152 et l'ensemble d'asservissement 154 sont par ailleurs identiques à ceux représentés sur la figure 3. Le fonctionnement du deuxième dispositif 220 selon l'invention est pour le reste analogue à celui du premier dispositif 20. Un troisième dispositif 320 selon l'invention est représenté sur la figure 6. A la différence du premier dispositif 20, la pompe 52 délivre un débit de sortie constant.The adjustment assembly 152 and the servocontrol assembly 154 are also identical to those shown in FIG. 3. The operation of the second device 220 according to the invention is for the rest similar to that of the first device 20. A third device 320 according to the invention is shown in FIG. 6. Unlike the first device 20, the pump 52 delivers a constant output rate.
Une tubulure de dérivation 322, munie d'une vanne de régulation 324 délivrant un débit réglable, est piquée sur la tubulure de sortie de pompe 78. La tubulure de dérivation 322 débouche dans la bâche 50 et est propre à dériver une fraction réglable comprise entre 0% et 100% du débit de sortie de la pompe jusqu'à la bâche 50, et donc à délivrer au moteur un débit réglable compris entre 100% et 0% du débit constant de la pompe.A branch pipe 322, provided with a regulating valve 324 delivering an adjustable flow rate, is stitched onto the pump outlet pipe 78. The branch pipe 322 opens into the tank 50 and is adapted to derive an adjustable fraction comprised between 0% and 100% of the output flow of the pump to the tank 50, and thus to deliver to the motor an adjustable flow rate between 100% and 0% of the constant flow rate of the pump.
A la différence du premier dispositif 20, le régulateur 62 du troisième dispositif 320 comporte un ensemble 152 du réglage du débit passant à travers la vanne 324, cet en- semble 152 étant piloté par l'ensemble d'asservissement 154.Unlike the first device 20, the regulator 62 of the third device 320 comprises a set 152 of the flow control passing through the valve 324, this assembly 152 being controlled by the control unit 154.
La vanne de régulation 324 est ainsi compensée en pression. Le régulateur 62, et l'ensemble de réglage 152 du débit de fluide délivré au moteur est piloté par l'ensemble d'asservissement 154 en fonction d'une pression de fluide hydraulique dépendant de la charge exercée sur le moteur, mesurée par la différence de pression aux bornes de l'étranglement 150 comme décrit précédemment.The control valve 324 is thus compensated for pressure. The regulator 62, and the adjustment set 152 of the fluid flow delivered to the engine, is controlled by the servocontrol unit 154 as a function of a hydraulic fluid pressure depending on the load exerted on the engine, measured by the difference pressure across the throat 150 as previously described.
Le dispositif 320 ainsi obtenu est beaucoup plus stable en fonction de la charge, ce qui permet notamment d'augmenter la précision du déplacement de la navette 34 dans le puits. The device 320 thus obtained is much more stable depending on the load, which allows in particular to increase the precision of the displacement of the shuttle 34 in the well.

Claims

REVENDICATIONS
1.- Dispositif (20 ; 220 ; 320) d'intervention dans un puits (12) d'exploitation de fluide, du type comprenant :1.- Device (20; 220; 320) for intervention in a fluid exploitation well (12) of the type comprising:
- une navette (34) portant au moins un outil d'intervention et/ou de mesure, desti- née à être introduite dans le puits (12) ;a shuttle (34) carrying at least one intervention and / or measurement tool, intended to be introduced into the well (12);
- une ligne (36) de travail au câble portant la navette (34) ;- a working line (36) cable carrying the shuttle (34);
- un treuil (38) de manœuvre de la ligne, le treuil (38) comprenant un tambour rotatif (42) d'enroulement de la ligne (36) et une centrale hydraulique (46) d'entraînement en rotation du tambour (42), la centrale hydraulique (46) comportant : • une bâche (50) de stockage d'un fluide hydraulique de commande ;- a winch (38) for maneuvering the line, the winch (38) comprising a rotary drum (42) for winding the line (36) and a hydraulic power unit (46) for rotating the drum (42) the hydraulic power unit (46) comprising: • a tarpaulin (50) for storing a hydraulic control fluid;
• une pompe (52) d'entraînement du fluide hydraulique contenu dans la bâche (50), raccordé à la bâche (50) par une conduite amont (54) ;• a pump (52) for driving the hydraulic fluid contained in the tank (50), connected to the tank (50) by an upstream pipe (54);
• au moins un moteur hydraulique (56) d'entraînement du tambour (42) raccordé à la pompe (52) par une conduite intermédiaire et raccordé à la bâche (50) par une conduite aval ; caractérisé en ce que la centrale hydraulique comprend un régulateur (62) du débit de fluide hydraulique délivré au ou à chaque moteur hydraulique (56) , le régulateur (62) étant piloté en fonction d'au moins une pression de fluide hydraulique dépendant de la charge exercée sur le moteur (56) par le tambour (42) rotatif, la ou chaque pression étant prise directement sur l'une desdites conduites.At least one hydraulic motor (56) for driving the drum (42) connected to the pump (52) via an intermediate pipe and connected to the tank (50) via a downstream pipe; characterized in that the hydraulic unit comprises a regulator (62) for the flow of hydraulic fluid supplied to the or each hydraulic motor (56), the regulator (62) being controlled according to at least one hydraulic fluid pressure depending on the load exerted on the motor (56) by the rotating drum (42), the or each pressure being taken directly on one of said pipes.
2.- Dispositif (20 ; 220 ; 320) selon la revendication 1 , caractérisé en ce que la centrale hydraulique (46) comprend un étranglement calibré (150) réglable, monté sur la conduite intermédiaire, un piquage amont (158), et un piquage aval (160) pour prendre la pression en amont et en aval de l'étranglement (150), le régulateur (62) étant asservi pour maintenir sensiblement constante à une valeur seuil réglable la différence de pression, prise entre les piquages amont et aval (158, 160).2.- Device (20; 220; 320) according to claim 1, characterized in that the hydraulic unit (46) comprises a calibrated throat (150) adjustable, mounted on the intermediate pipe, an upstream stitching (158), and a downstream stitching (160) to take the pressure upstream and downstream of the throttle (150), the regulator (62) being slaved to maintain substantially constant at an adjustable threshold value the pressure difference, taken between the upstream and downstream connections (158, 160).
3.- Dispositif (20 ; 220) selon la revendication 2, caractérisé en ce que le régulateur (62) comprend un ensemble (152) de réglage du débit de la pompe (52) comportant un organe mobile (162) entre une position de débit minimal et une position de débit maxi- mal, le régulateur (62) comprenant un ensemble (154) d'asservissement de l'organe mobile (162) comportant une vanne de régulation (156) présentant un tiroir (184) dépla- çable entre une première position de régulation pour le déplacement de l'organe mobile (162) vers la position de débit maximal et une deuxième position de régulation pour le déplacement de l'organe mobile (162) vers la position de débit minimal, le piquage amont (158) et le piquage aval (160) étant raccordés hydrauliquement à la vanne de régulation (156) pour déplacer le tiroir (184) entre ses positions de régulation en fonction de la différence de pression entre le piquage amont (158) et le piquage aval (160).3.- Device (20; 220) according to claim 2, characterized in that the regulator (62) comprises a set (152) for adjusting the flow rate of the pump (52) comprising a movable member (162) between a position of minimum flow rate and a maximum flow position, the regulator (62) comprising a servo assembly (154) for the movable member (162) having a regulating valve (156) having a displaceable slide (184) between a first control position for moving the movable member (162) to the maximum flow position and a second control position for moving the movable member (162) to the minimum flow position, the upstream stitching (158) and the downstream stitching (160) being hydraulically connected to the control valve (156) for moving the spool (184) between its control positions as a function of the pressure difference between the upstream stitching (158) and the downstream stitching (160).
4.- Dispositif (20 ; 220) selon la revendication 3, caractérisé en ce que l'ensemble de réglage (152) comprend une enceinte (164) délimitant une chambre (166) de réception de l'organe mobile (162), l'organe mobile (162) définissant dans la chambre (166) une région amont (168) raccordée hydrauliquement à l'une desdites conduites (96) et une région aval (170) raccordée hydrauliquement à la vanne de régulation (156), le tiroir (184) dans sa première position étant raccordé à la région aval (170), pour alimenter la région aval en fluide hydraulique sous pression, et dans sa deuxième position raccordant hy- drauliquement la région aval (170) à une bâche (50) à basse pression.4.- Device (20; 220) according to claim 3, characterized in that the adjustment assembly (152) comprises an enclosure (164) defining a chamber (166) for receiving the movable member (162), movable member (162) defining in the chamber (166) an upstream region (168) hydraulically connected to one of said lines (96) and a downstream region (170) hydraulically connected to the regulating valve (156), the spool (184) in its first position being connected to the downstream region (170), for supplying the downstream region with hydraulic fluid under pressure, and in its second position hydraulically connecting the downstream region (170) to a tarpaulin (50). low pressure.
5.- Dispositif (320) selon la revendication 2, caractérisé en ce qu'il comprend une tubulure de dérivation raccordant la sortie de la pompe à la bâche, le régulateur (62) comprenant une vanne de régulation du débit circulant à travers la tubulure de dérivation. 5.- Device (320) according to claim 2, characterized in that it comprises a branch pipe connecting the output of the pump to the tank, the regulator (62) comprising a flow control valve flowing through the tubing bypass.
6.- Dispositif (20 ; 220 ; 320) selon l'une quelconque des revendications 2 à 5, ca- ractérisé en ce que la centrale hydraulique (46) comprend une vanne de commutation (76) déplaçable entre une première position d'activation dans laquelle la conduite intermédiaire est formée entre la sortie (74) de la pompe (52) et une première entrée (100) du moteur (56) , et la conduite aval est formée entre une deuxième entrée (102) du moteur (56) et la bâche (50), et une deuxième position d'activation dans laquelle la conduite in- termédiaire est formée entre la deuxième entrée (102) du moteur et la sortie (74) de la pompe (52) et la conduite aval raccorde la première entrée (100) du moteur et la bâche (50).6. Device (20; 220; 320) according to any one of claims 2 to 5, characterized in that the hydraulic unit (46) comprises a switching valve (76) movable between a first activation position wherein the intermediate pipe is formed between the outlet (74) of the pump (52) and a first inlet (100) of the motor (56), and the downstream pipe is formed between a second inlet (102) of the motor (56) and the tarpaulin (50), and a second activation position in which the intermediate pipe is formed between the second motor inlet (102) and the pump outlet (74) and the downstream pipe connects the first inlet (100) of the engine and the tarpaulin (50).
7.- Dispositif (20 ; 220 ; 320) selon la revendication 6, caractérisé en ce que l'étranglement calibré (150) est placé dans la vanne de commutation (76). 7.- Device (20; 220; 320) according to claim 6, characterized in that the calibrated throat (150) is placed in the switching valve (76).
8.- Dispositif (220) selon l'une quelconque des revendications précédentes, caractérisé en ce que la centrale hydraulique (46) comprend un organe mené hydrauliquement, raccordé à la pompe (52) en parallèle du moteur hydraulique (56).8.- Device (220) according to any one of the preceding claims, characterized in that the hydraulic unit (46) comprises a hydraulically driven member, connected to the pump (52) in parallel with the hydraulic motor (56).
9.- Installation (10) d'exploitation de fluide dans le sol (18), caractérisée en ce qu'elle comprend : • un puits (12) d'exploitation ménagé dans le sol (18), le puits (12) débouchant en un premier point (22) situé à la surface (16) du sol ;9.- Installation (10) operating fluid in the soil (18), characterized in that it comprises: • a well (12) operating in the soil (18), the well (12) opening at a first point (22) located at the surface (16) of the ground;
• une tête de puits (14), obturant le puits (12) au niveau du premier point (22) ; et• a wellhead (14), closing the well (12) at the first point (22); and
• et un dispositif d'intervention (20 ; 220 ; 320) selon l'une quelconque des revendications précédentes, la navette (34) et la ligne de travail (36) étant introduites dans le puits (12) à travers la tête de puits (14). And an intervention device (20; 220; 320) according to any one of the preceding claims, the shuttle (34) and the working line (36) being introduced into the well (12) through the wellhead. (14).
10.- Procédé d'intervention dans un puits (12) à l'aide d'un dispositif (20 ; 220 ; 320) selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il comprend les étapes suivantes :10. A method of intervention in a well (12) using a device (20; 220; 320) according to any one of claims 1 to 8, characterized in that it comprises the following steps:
• montage de la navette (34) sur la ligne de travail (36) et introduction de la navette (34) et de la ligne de travail (36) dans le puits (12) ;• mounting the shuttle (34) on the working line (36) and introducing the shuttle (34) and the working line (36) in the well (12);
• actionnement de la centrale hydraulique (46) pour entraîner en rotation le tambour (42), l'actionnement comprenant :Actuating the hydraulic unit (46) to drive the drum (42) in rotation, the actuation comprising:
- la mise en œuvre de la pompe (52) pour entraîner le moteur hydraulique (56) par circulation de fluide hydraulique dans lesdites conduites, et - la régulation du débit délivré au ou à chaque moteur hydraulique en fonction au moins d'une pression dépendant de la charge exercée sur le moteur (56) par le tambour (42), la ou chaque pression étant prise directement sur l'une desdites conduites. - The implementation of the pump (52) for driving the hydraulic motor (56) by hydraulic fluid circulation in said pipes, and - the regulation of the flow delivered to the or each hydraulic motor according to at least one dependent pressure the load exerted on the motor (56) by the drum (42), the or each pressure being taken directly on one of said pipes.
EP10723180A 2009-04-02 2010-04-01 Device for use in a fluid exploitation well, exploitation equipment, and associated method Active EP2414617B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0952130A FR2944048A1 (en) 2009-04-02 2009-04-02 INTERVENTION DEVICE IN A FLUID OPERATING WELL, OPERATING PLANT AND ASSOCIATED METHOD
PCT/FR2010/050624 WO2010112779A2 (en) 2009-04-02 2010-04-01 Device for use in a fluid exploitation well, exploitation equipment, and associated method

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EP2414617A2 true EP2414617A2 (en) 2012-02-08
EP2414617B1 EP2414617B1 (en) 2013-03-27

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AU (1) AU2010231257A1 (en)
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CA (1) CA2757389A1 (en)
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BRPI1013633A2 (en) 2016-10-25
US9151128B2 (en) 2015-10-06
FR2944048A1 (en) 2010-10-08
CN102449307A (en) 2012-05-09
CA2757389A1 (en) 2010-10-07
WO2010112779A2 (en) 2010-10-07
EP2414617B1 (en) 2013-03-27
US20120125638A1 (en) 2012-05-24
CN102449307B (en) 2014-07-30
AU2010231257A1 (en) 2011-11-24
WO2010112779A3 (en) 2010-12-16

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