EP0524042B1 - Apparatus actuated by the hydrostatic pressure of a drilling fluid - Google Patents

Apparatus actuated by the hydrostatic pressure of a drilling fluid Download PDF

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Publication number
EP0524042B1
EP0524042B1 EP92401786A EP92401786A EP0524042B1 EP 0524042 B1 EP0524042 B1 EP 0524042B1 EP 92401786 A EP92401786 A EP 92401786A EP 92401786 A EP92401786 A EP 92401786A EP 0524042 B1 EP0524042 B1 EP 0524042B1
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EP
European Patent Office
Prior art keywords
displacement
distribution
space
drilling fluid
energy
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.)
Expired - Lifetime
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EP92401786A
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German (de)
French (fr)
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EP0524042A1 (en
Inventor
André Cendre
Jean-Baptiste Fay
Benoit Amaudric Du Chaffaut
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IFP Energies Nouvelles IFPEN
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IFP Energies Nouvelles IFPEN
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Priority to FR9109066 priority Critical
Priority to FR9109066A priority patent/FR2679293B1/en
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Priority to US07/914,550 priority patent/US5310012A/en
Publication of EP0524042A1 publication Critical patent/EP0524042A1/en
Application granted granted Critical
Publication of EP0524042B1 publication Critical patent/EP0524042B1/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/06Deflecting the direction of boreholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/04Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells operated by fluid means, e.g. actuated by explosion

Description

  • The present invention relates to a device for actuating equipment associated with a drilling string lowered into a well, and in which a drilling fluid circulates, the primary function of which is to provide all the conventional functions of a drilling. The actuation device of the invention directly uses the hydraulic pressure energy of the circulating drilling fluid to actuate the equipment.
  • In the field of oil drilling, it is often necessary to actuate equipment or tools incorporated in a drill string lowered into a drilled well. This may in particular be the case for carrying out controlled trajectory drilling, exploratory measurement or test operations, or various operations of equipment for production wells.
  • In the prior art, several methods of actuating downhole equipment are known. This can be the pumping of tools in the pipeline which, once they have reached the right of the equipment, activates it. Instead of pumping, you can drop a ball or the like into the packing. These traditional methods present in particular the great disadvantage of completely or at best temporarily closing the inner channel of the lining, therefore of requiring a more or less prolonged stopping of pumping. However, in drilling, it is always very dangerous to no longer maintain the circulation of the drilling fluid. Indeed, when the upward circulation of the fluid in the annular well-packing is too low, or even zero, there is a great risk of destabilization of the walls. In addition, the debris no longer being brought up to the surface, they tend to sediment and risk trapping the lining.
  • For all these reasons, technical development has been oriented towards the use of other types of activation. We can use the action of the weight on the tool, the speed of rotation or a combination of both. But in this case, the realizations are very complex and unreliable to control the management of orders for these drilling parameters.
  • Patent EP-251543-A is known, for example, where the actuation of a stabilizer with viable geometry is obtained by weight on the tool. However, the actuation system requires the action of an axial force up to a critical value without positive locking in a determined position. The user sometimes has the risk of error in his knowledge of the position of the equipment. On the other hand, the weight on the tool is a parameter linked to the drilling tool and has a direct influence on drilling performance, so users do not wish to be restricted in the use of this force for anything other than drilling progress.
  • The device of the present invention does not at any time interfere with the drilling parameters, whether hydraulic or mechanical.
  • Patent application EP-376811 discloses an actuating device comprising a needle-needle system using the hydrodynamic action of the circulation of the drilling fluid. This document describes the use of an increase in flow to create a pressure difference between upstream and downstream of the device large enough to obtain actuation. It is clear that in this document the pressure drops downstream of the device come in reduction of the activation effort.
  • Document US-A-3788136, which represents the state of the art corresponding to the preamble of claim 1, discloses an apparatus which comprises means for distributing the drilling fluid to generate pulsations of the torque in the drilling rig .
  • On the contrary, in the present invention, all the pressure drops in the packing downstream of the device are active for actuation. This represents a definite advantage since these pressure drops always have substantial values taking into account the essential presence of tools with restriction of passage, in particular a drilling tool. The level of activation energy required can then be more easily obtained while remaining under normal operating conditions, which practically eliminates all interference with the drilling environment.
  • In the prior art, which can be illustrated by the aforementioned application EP-376811, the internal mechanisms, in particular of activation, indexing and locking, impose specific lubrication of the organs. They must therefore be sealed against the presence of a pressurized fluid such as drilling fluid. All these constraints are eliminated by the present invention which directly uses the drilling fluid without any other buffer or intermediate fluid.
  • The present invention therefore relates to an equipment actuation device associated with a drilling string lowered into a well, and in which a drilling fluid circulates, said circulation creating a positive differential pressure DP between the interior space and the space outside of said lining. Said device as defined in claim 1 comprises distribution means comprising at least two orifices, one of the orifices being connected by a conduit to displacement means, the other orifice being connected by a conduit to said interior space. Said distribution means being adapted to control the communication of said drilling fluid under pressure between the interior space of the lining and an inlet chamber of said displacement means. These also include another exhaust orifice connected by a conduit to said outside space.
  • Said displacement means are adapted to be activated by transforming the hydraulic energy resulting from the differential pressure DP of said drilling fluid between said intake chamber and the exhaust orifice, into mechanical activation energy. The transformation is carried out directly without the cooperation of any other fluid than said drilling fluid, and said distribution means comprise a position in which the duct connecting said distribution means to said intake chamber of said displacement means is closed, so as to trapping the pressurized fluid in said conduit in order to lock said displacement means in their activation position.
  • Said distribution means of the device according to the invention may include two inlet orifices and two outlet orifices communicating two by two. Said distribution means can be adapted to reverse communications. The inlet ports are then connected by conduits, one to the interior space, the other to the exterior space and the outlet ports are then connected by conduits, one to the inlet chamber said displacement means, the other to the exhaust orifice, the distribution means also being adapted to close the two outlet orifices.
  • The distribution means may comprise a valve with two orifices and two positions and said displacement means comprise return means. In a first position, said valve can open the communication of said drilling fluid between the interior space of the lining and said displacement means, said displacement means being activated when said mechanical activation energy is greater than the energy developed by said recall means. In a second position, said valve can close the communication conduit of said drilling fluid between the interior space and said displacement means.
  • The displacement means can be of the longitudinal jack type, the two chambers of which, in particular separated by a sealed piston, are filled with said drilling fluid. Said piston being notably subjected to said differential pressure DP.
  • The distribution means can be remotely controlled from the surface.
  • The displacement means may comprise several longitudinal cylinders arranged in series and a translation shaft cooperating with a stabilizer with variable geometry.
  • The displacement means of the present invention may comprise a needle-needle system causing a restriction of the passage of the drilling fluid in said interior space when said means are at the end of activation.
  • The invention also provides a method as defined by claim 10 comprising the following steps:
    • the value of the differential pressure DP is notably adjusted by surface pumping to a determined value,
    • said distribution means are controlled to admit the circulation of said drilling fluid under pressure between the interior space and said displacement means,
    • the equipment is actuated by the activation of said displacement means when said mechanical energy is greater than the energy developed by the return means of said displacement means,
    • said distribution means are controlled to close the communication between the interior space and said displacement means and to lock in position said displacement means,
    • said distribution means are controlled to open the communication between the interior space and said displacement means and the differential pressure DP is reduced, in particular by regulating the pumping, until the energy developed by said return means is greater to said mechanical energy.
  • The present invention also relates to the application of the device and of the preceding method to directional drilling.
  • The main idea of the invention is to directly use the hydraulic energy available in a pipe in which a pressurized fluid circulates. In fact, the actuation device of the invention can be compared to a hydrostatic circuit in diversion between the interior space and the exterior space of the lining. Part of the hydraulic energy is directed to displacement means. Distribution means control the admission or not of this energy towards the displacement means which play the role of a receiver. To simplify the design of the various elements, limit maintenance while increasing the reliability of the device, the hydraulic fluid used is directly the drilling fluid present in the internal channel of the lining. In this invention, the distribution means, the displacement means and the equipment are adapted to operate with all types of drilling fluids.
  • One of the advantages of the invention is the use of the differential pressure prevailing at the level of the device between the internal pressure and the external pressure to obtain the necessary actuation energy. It should be noted that it is the pressure drops downstream of the device that create the useful pressure in the interior space. Consequently, in this invention, it is not generally necessary to close off the circulation channel in order to be able to activate. In contrast to the document EP-376811 cited above where the active pressure is the differential pressure inside the channel between the upstream and downstream of the device, and the more there are pressure drops downstream, the less pressure there is. active.
  • The present invention will be better understood and its advantages will appear more clearly on description which follows of particular, nonlimiting examples, illustrated by the following figures:
    • FIG. 1 represents a functional diagram of the device,
    • FIG. 2 represents a block diagram of the device,
    • FIGS. 3A, 3B and 3C represent hydrostatic diagrams representing three types of circuits enabling the device to be produced,
    • Figures 4A, 4B, 4C and 4D show a preferred embodiment of the device of the present invention.
    • Figures 5, 6, 7 and 8 are cross sections at different levels of the preferred embodiment.
  • FIG. 1 represents a functional diagram of said device where:
    • PI and PA represent respectively the pressures in the interior space and in the exterior space of the drill string,
    • TC are control or remote control means,
    • D are distribution means operated by a motorization M,
    • P is the power required for the motorization,
    • R are means of displacement or receiver,
    • FA is a mechanical action,
    • E is the equipment to be operated,
    • the dotted lines RD and RE respectively represent the state copies of the means of movement and of the equipment.
  • This diagram makes it possible to represent the different functional connections which connect the organs constituting the invention. The TC command is related to the surface by hydraulic transmission of information sequences as taught in document EP-A-377378. We will not depart from the scope of this invention by using other types of transmission, in particular by electric cable, optical fibers, pressure waves or electromagnetic waves. The TC unit sends signals to the motorization M. The motorization power P is supplied by a set of electric accumulators. If the transmission mode is by cable, energy will be able to pass through this cable. It will also be possible to integrate into the lining a power generator operating in particular from the circulation of the drilling fluid.
  • M operates the distribution means D. These control the hydraulic energy available between PI and PA and distribute or not distribute said energy to the displacement means R or receiver. R is in particular of the cylinder type, single acting with return spring or double acting. One chamber of the jack directly receives the drilling fluid at the pressure PI and the other chamber contains the same fluid but at the pressure PA. The displacement of the piston and the pushing force corresponding to the action of the pressures provide the energy for activating the mechanical action FA. This activates the equipment E.
  • It will not depart from the scope of this invention if the receiver R is of another type than a longitudinal cylinder, in particular rotary cylinder, rotary motor or turbine. In these cases the mechanical action FA may in particular be in the form of the rotation of a couple of forces.
  • The dotted link RD is the return signal supplied by position sensors of the displacement means. This signal which can pass to the surface makes it possible to verify the execution of the command at the level of the receiver.
  • The dotted link RE is a signal indicating the actuation of the equipment E. This signal is in particular an increase in pressure in the interior space of the lining, but it will not go beyond the scope of this invention if the signal is of another nature and transits by other means of transmission.
  • Figure 2 illustrates the principle of the relative arrangement of the various bodies constituting the invention.
  • A piece of equipment 3 is associated with a pipe 1 like a drilling string, in which a drilling fluid circulates represented by the arrows 2. TC control means 4, distribution means 6 and displacement means 10, such as a jack , are integrated into the drill string. The control means 4 are connected by conductors 5 to the distribution means 6.
  • The distribution means 6 comprise a valve 7 which controls the circulation of the drilling fluid through a conduit opening at 8 into the interior space 17 of the pipe 1, and at 9 in a chamber 11 of the displacement means 10. A piston sealed 14 separates the chamber 12 from the chamber 11. The chamber 12 is in communication with the outside space 18 to the pipe 1 by the conduit opening at 13.
  • The mechanical connection between the displacement means 10 and the equipment 3 to be actuated comprises a shaft 15 and return means 19. The arrow 16 represents an actuating force.
  • It will not depart from the scope of this invention if the communication via the conduit which opens out at 13 is also controlled by the distribution means as shown in the circuit diagrams in FIG. 3A and FIG. 3B.
  • FIG. 3A represents a hydrostatic circuit integrated into said device. The distribution means comprise a distributor 25 with four channels and two positions. This type of distributor, well known in the industry, can have multiple technical embodiments, in particular with a slide valve, rotary valve or piloted valves. The control signals from TC 4 are represented by lines 28 and 29.
  • An inlet conduit 21 is connected to the external space PA. The conduit 20 is connected to the interior space PI.
  • An outlet conduit 23 is connected to the intake port of the receiver 30. Its exhaust port is connected by a conduit 24 to the other outlet of the distributor 25. The mechanical connection or shaft 15 cooperates with the equipment at operate 3.
  • This circuit diagrams a reversal function. In a position of the distributor, the pressurized drilling fluid coming from PI is channeled towards 9, the exhaust is then channeled towards PA by the conduits 24 and 21.
  • In the second position, PI is in communication with the exhaust via the conduit 24 and the inlet 9 then is connected by 23 and 21 to PA.
  • In the case of the representation of FIG. 3A where the receiver is a double-acting cylinder, this circuit makes it possible to control the advance or the recoil of said cylinder.
  • FIG. 3B represents an improvement of the previous circuit in that the distributor 26 is four-way and three-position. The third additional position being that where the conduits 20, 21, 23 and 24 are closed. In this position the displacement of the jack is blocked in one direction as in the other. In fact, taking into account the fact that the drilling fluid contained in the chambers 11 and 12 and in the conduits 23 and 24 is practically incompressible and that the leaks are substantially zero, the jack cannot move.
  • FIG. 3C represents a simplified hydrostatic circuit where the jack 30 is single acting with a return spring 19 or equivalent, a two-way distributor and two positions, the jack exhaust being connected to PA by the channel 22 directly without distributor control.
  • In one position of the distributor, PI is in communication with the intake of the jack, in the other position the distributor closes the conduit 23 and allows immobilization of the displacement means or jack according to the same principle as in FIG. 3B.
  • It should be noted that these three types of circuits are suitable for the carrier fluid to be a drilling fluid. To this end, the dimensions of the pipes will be modified, the technology of the seals and the choice of materials used, taking into account the nature of the fluid, especially with respect to corrosion.
  • These circuits are also suitable for operating with receivers other than longitudinal cylinders.
  • The actuation principle of the device of the invention allows controlled movements and therefore multiple actuations of the equipment. In fact, this advantage can be illustrated in a non-limiting manner by considering in what follows a jack to play the role of the receiver. The device makes it possible to control the volume of fluid admitted into the chamber 11, and by knowing the displacement of the jack, in particular by sensors, it is then possible to obtain a specific adjustment of the actuation of the equipment following the displacement of the jack.
  • It is also possible, without departing from the scope of this invention, to control the movement of the jack and therefore of the equipment by means of position sensors and electronic control contained in the control system.
  • Of course, it will still be possible to operate in a more simplified manner between the two extreme positions of the longitudinal cylinder.
  • The device may be fitted with a positive lock on the positioning of the equipment. This locking, not shown, can be controlled by the same control means TC.
  • FIGS. 4A, 4B, 4C and 4D represent four stages of the most important elements of drilling equipment actuated by the device of the invention. This equipment is a viable diameter stabilizer whose viable geometry is obtained by activating the actuation device of the present invention.
  • The equipment consists of a cylindrical body 40 comprising at each end a conventional thread 41 (only the lower connection is shown). These threads allow this equipment to be integrated into a drill string in the usual manner for the profession.
  • FIG. 4A illustrates the upper stage of said equipment where the remote control means are located. These means include a mechanical assembly 42, batteries 43 or electric accumulators and an electronic cartridge 44. This cartridge translates the orders transmitted by pressure signals from the surface. All of these means located inside the body 40 must be centered and fixed by mechanical means which allow free circulation of the drilling fluid in an internal channel 45. This is illustrated in sections 5 and 6 of the figures. 5 and 6.
  • FIG. 4B represents the device for actuating the equipment. An electric motor 46, controlled by the electronic cartridge 44 and supplied by the accumulators 43, regulates the position of the valve 47. The movement of the valve 49 relative to its seat 50 opens or closes this valve 47. When the valve is lifted from its seat, the channel 51 is placed in communication by the orifice 48 with the interior space of the lining, that is to say the channel 45 where the drilling fluid circulates. The pressurized drilling fluid is then led through the channel 51 to the volume of the chamber 52. A piston 53 comprising seals 54 sealingly separates the chamber 52 from the chamber 55. These chambers result from the cooperation of the piston 53 and a cylinder 53a. Seals 67 complete the sealing of the chamber 55 around the rod 66 of the piston 53. The volume of the chamber 55 is in communication with the outside space by means of the orifice 62 and the channel 69 which opens out through the orifice 63. A valve 90 blocks any leakage of fluid from the chamber 52 towards the outside through the orifice 63, but allows injection, in particular for cleaning, by the orifice 63 towards the chamber 52, the channel 51, the valve 47 and the orifice 48. This operation can only be done when the device is on the surface.
  • The rod 66 is mechanically connected to another piston 58 with a stroke identical to the first. The chamber 57 is in communication with the chamber 52 by a pipe 56 pierced in the rod 66. The volume of the chamber 60 is also in communication with the outside via the orifice 61 and the channel 70 which joins the channel 69. seals 68 are placed around the rod 59 of the second piston 58.
  • It will not depart from the scope of this invention if more than two pistons are assembled in series according to the preceding arrangement. Likewise if the displacement means are reduced to a single piston in the case where the actuating force thus developed is sufficient.
  • The body 71 of the double cylinders, in which the liners 53a and 58a of the pistons 53 and 58 have been machined, has an external shape adapted to be placed in the internal diameter of the body 40 and to leave a section 45 of passage sufficient for the fluid . Figure 7 illustrates the fluid passage section at the body 71 of the double cylinder.
  • The rod 59 is connected to the actuation shaft by an assembly 64.
  • The piston 53 includes an extension rod 77. This rod has a magnet 78 on its end. Three flexible blade switches 79 have been placed in the receptacle 80 of the extension rod 77.
  • Figure 4C describes the equipment actuated by the double cylinder. The shaft 72 is crossed by a channel 65 allowing the circulation of the drilling fluid.
  • The shaft 72 has on its outer surface dishes 73 inclined with respect to its longitudinal axis and thus forming ramps. Stabilizer blades 74 rest on these inclined ramps 73. Springs 76 remind the blades 74 in a centripetal manner. Seals 75 complete the sealing of the shaft 72 which cooperates with the internal wall of the body 40.
  • FIG. 8 shows a section 8 of the stabilizer with viable geometry where three blades 74 are arranged at angles of 120 ° on the circumference of the body 40. It will not go beyond the scope of this invention with other arrangements or a different number of blades.
  • Figure 4D shows the bottom of the equipment. The shaft 72 has another seal 81. A return spring 82 is supported on one side on a support 85 secured to the body 40 and on the other on the end of the shaft 72.
  • The inner channel 65 of the shaft 72 is of reduced section at its lower end 83 in order to cooperate with the needle 84 integral axially with the body 40.
  • A key 86 prevents rotation of the shaft 72 on its longitudinal axis relative to the body 40.
  • To clearly describe the operating mode of this equipment actuated by the device of the present invention, the following successive steps must be considered:
    • the order to open the valve 47 has been sent, which has the effect of balancing the pressures between the interior of the lining and the chambers 52 and 57,
    • the circulation of the drilling fluid in the channel 45 is stopped or has already been stopped, the differential pressure between the inside and the outside of the lining is substantially zero,
    • the force of the return spring 82 is then preponderant since there is no force on the pistons 53 and 58 due to the absence of differential pressure,
    • the shaft is in the high position and the blades 74 are retracted in the body 40,
    • if the circulation of the drilling fluid is restarted, the internal pressure at the level of the device will increase relatively to the external pressure. The pressure acting on the pistons 53 and 58 is substantially a function of the pressure drops created on the path of the drilling fluid between the interior 45 and more precisely at the orifice 48 and the external pressure more precisely at the orifice 63,
    • when the pressure in the chambers 52 and 57 of the jacks develops a force greater than the restoring forces, the jacks slide while pushing down the shaft 72,
    • at the same time, the stabilizer blades are pushed radially outwards,
    • the rod 77 follows the movement of the jacks and the magnet 78 comes at the end of the race to be positioned opposite a flexible blade switch 79, the latter is activated and plays the role of a limit switch. The signal provided by the contactor is used to close the valve 47. According to the remote control modes, this signal can pass to the surface and inform in a positive way of the end of the actuation, but in a more simplified this signal is only looped internally on the electronic cartridge 44. The actuation information is then provided by the pressure increase that can be measure at the surface. This increase resulting from the cooperation of the nozzle 83 with the needle 84 at the end of movement of the shaft 72,
    • the valve 47 being closed, one trapped in the volumes of the chambers 52 and 57 and in the channel 51, a volume of drilling fluid under pressure. The valve 47 isolating this volume from the outside space, the pressure regime in the inside space can be modified by different pumping conditions without the actuating means, therefore the equipment, changing state. The valve is thus used as a means of immobilizing the equipment in the blade out position. The device can be fitted with a mechanical locking device controlled by the electronic cartridge 44 of the remote control. This locking can be achieved in several forms known from the prior art, in particular by electromagnetically retractable dogs. Without departing from the scope of this invention, the position of the displacement means can be controlled by the flexible reed switches 79. In fact, if there is a leak at the valve 47, the extension rod 77 moves relative to the light switch. The signal obtained can then command the opening of the valve 47 to compensate for the leak and maintain the displacement means in position.
    • to return to a state identical to the origin, a state which can be qualified as rest, it suffices to send the order to open the valve 47 while adjusting, if necessary, the pumping conditions to have a pressure difference DP, either zero or sufficiently low for the spring 82 to push the shaft 72, the double cylinders and the rod 77. When the magnet 78 activates the limit switch 79 for the high position, the valve is automatically closed to isolate the actuating means from the internal pressure conditions.
  • It is advantageous, in this particular embodiment, to place at least one third switch 79 with a blade between the two extremes of end of travel. The intermediate switch allows an intermediate position of the stabilizer blades. Indeed, if the order sent from the surface corresponds to the activation of the stabilizer at an intermediate diameter, during the displacement of the means and jointly of the rod 77, the magnet by activating the intermediate switch immobilizes the assembly by closing the valve 47 when the jacks are halfway. The stabilizer blades will be partially extended and the stabilizer will be set to an intermediate diameter. The locking or servo-control means described above can provide this intermediate position.
  • It appears that this device allows as many actuation settings as there are different orders that it is possible to send from the surface and translate at the device level. But each setting must have a specific position sensor.

Claims (11)

  1. Device for activating equipment associated with a drill string (1) lowered down a well and in which a drilling fluid is circulating, the said circulation creating a positive differential pressure DP between the space inside (17) and the space outside (18) the drill string, in which:
    - the said device has distribution means (6) having at least two orifices (8, 9), one of these orifices being linked by a passage to displacement means (10), the other orifice being linked via a passage to the said outside space (17),
    - the said distribution means are designed to control communication for the said pressurised drilling fluid between the space inside the drill string and an admission chamber (11) of the said displacement means,
    - the said displacement means have an exhaust orifice (13) linked by a passage to the said outside space (18),
    - the said displacement means (10) are designed to be activated by converting the hydraulic energy resulting from the differential pressure DP of the said drilling fluid between the admission chamber (11) and the exhaust orifice (13) into mechanical activation energy, the conversion being effected directly without the co-operation of any fluid other than the said drilling fluid,
    characterised in that the said distribution means (6) has a position in which the passage linking the said distribution means to the said admission chamber (11) of the said displacement means is closed so as to trap the pressurised fluid in the said passage in order to lock the said displacement means in their activation position.
  2. Device as claimed in claim 1, characterised in that:
    - the said distribution means have two inlet orifices (20, 21) and two outlet orifices (23, 24) communicating in pairs, the said distribution means being designed to reverse the communication links,
    - the said inlet orifices are linked by passages, one to the inside space and the other to the outside space,
    - the said outlet orifices are linked by passages, one to the admission chamber of the displacement means and the other to the exhaust orifice, and
    - the said distribution means are designed to close off the said two outlet orifices.
  3. Device as claimed in claim 1, characterised in that:
    - the said distribution means (6) have a two-port valve (7) with two positions,
    - the said displacement means (10) have return means (19),
    - in a first position, the said valve opens up communication for the said drilling fluid between the space inside (17) the drill string and the said displacement means, the said displacement means being activated when the said mechanical activation energy is greater than the energy that has been built up by the said return means,
    - in a second position, the said valve closes off the passage providing communication for the said drilling fluid between the inside space and the said displacement means.
  4. Device as claimed in one of the previous claims, characterised in that the said displacement means (10) are of the longitudinal jack type, the two chambers of which, separated by a fluid-tight piston in particular, are filled by the said drilling fluid, the said piston being subjected to the said differential pressure DP in particular.
  5. Device as claimed in one of the previous claims, characterised in that the said distribution means are remotely controlled from the surface.
  6. Device as claimed in one of the previous claims, characterised in that it has at least three sensors (79) for detecting the position of the said displacement means, two of which index the end positions and the third an intermediate displacement.
  7. Device as claimed in one of the previous claims, characterised in that the said displacement means (10) have several longitudinal jacks arranged in series.
  8. Device as claimed in one of the previous claims, characterised in that the said displacement means have a shaft (72) translating in co-operation with a variable geometry stabiliser.
  9. Device as claimed in one of the previous claims, characterised in that the said displacement means have a choke-needle system (83, 84) causing a restriction in the passage of the drilling fluid in the said inside space when the said means are at the end of the activation stage.
  10. Method of using the device as claimed in claim 3, characterised by the following steps:
    - the value of the differential pressure DP is set to a given value by means of the pumping conditions controlled from the surface in particular,
    - a command is issued to the said distribution means to admit the circulation of the said pressurised drilling fluid between the inside space and the said displacement means,
    - the equipment is operated by activating the said displacement means when the said mechanical energy is greater than the energy built up by the return means of the said displacement means,
    - a command is issued to the said distribution means to close off communication between the inside space and the said displacement means and lock the said displacement means in position,
    - a command is issued to the said distribution means to open up communication between the inside space and the said displacement means and the differential pressure DP is reduced, in particular by adjusting the pumping conditions, until the energy built up by the said return means is greater than the said mechanical energy.
  11. Application of the device or the method as claimed in one of claims 1 to 10 to directional drilling.
EP92401786A 1991-07-16 1992-06-24 Apparatus actuated by the hydrostatic pressure of a drilling fluid Expired - Lifetime EP0524042B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9109066 1991-07-16
FR9109066A FR2679293B1 (en) 1991-07-16 1991-07-16 Operation device associated with a drilling lining and comprising a hydrostatic circuit in drilling fluid, operation method and their application.
US07/914,550 US5310012A (en) 1991-07-16 1992-07-16 Actuating device associated with a drill string and comprising a hydrostatic drilling fluid circuit, actuation method and application thereof

Publications (2)

Publication Number Publication Date
EP0524042A1 EP0524042A1 (en) 1993-01-20
EP0524042B1 true EP0524042B1 (en) 1996-09-11

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EP92401786A Expired - Lifetime EP0524042B1 (en) 1991-07-16 1992-06-24 Apparatus actuated by the hydrostatic pressure of a drilling fluid

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US (1) US5310012A (en)
EP (1) EP0524042B1 (en)
CA (1) CA2074036A1 (en)
FR (1) FR2679293B1 (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5810523A (en) * 1995-02-28 1998-09-22 Kabushiki Kaisha Miyanaga Apparatus for drilling a hole having an undercut space
JP2862807B2 (en) * 1995-02-28 1999-03-03 株式会社ミヤナガ Drilling device for holes with undercuts
BR9610373A (en) * 1995-08-22 1999-12-21 Western Well Toll Inc Traction-thrust hole tool
US6003606A (en) * 1995-08-22 1999-12-21 Western Well Tool, Inc. Puller-thruster downhole tool
US6263981B1 (en) 1997-09-25 2001-07-24 Shell Offshore Inc. Deepwater drill string shut-off valve system and method for controlling mud circulation
US6257338B1 (en) 1998-11-02 2001-07-10 Halliburton Energy Services, Inc. Method and apparatus for controlling fluid flow within wellbore with selectively set and unset packer assembly
AU5601899A (en) * 1998-11-02 2000-05-04 Halliburton Energy Services, Inc. Downhole hydraulic power source
US6367366B1 (en) 1999-12-02 2002-04-09 Western Well Tool, Inc. Sensor assembly
US6347674B1 (en) 1998-12-18 2002-02-19 Western Well Tool, Inc. Electrically sequenced tractor
US6241031B1 (en) 1998-12-18 2001-06-05 Western Well Tool, Inc. Electro-hydraulically controlled tractor
US6401823B1 (en) 2000-02-09 2002-06-11 Shell Oil Company Deepwater drill string shut-off
US6464003B2 (en) 2000-05-18 2002-10-15 Western Well Tool, Inc. Gripper assembly for downhole tractors
US7128170B1 (en) 2001-11-15 2006-10-31 Mark Alexander Russell Adjustable stabiliser for directional drilling
WO2002044509A2 (en) * 2000-12-01 2002-06-06 Western Well Tool, Inc. Tractor with improved valve system
US8245796B2 (en) * 2000-12-01 2012-08-21 Wwt International, Inc. Tractor with improved valve system
US6431291B1 (en) 2001-06-14 2002-08-13 Western Well Tool, Inc. Packerfoot with bladder assembly having reduced likelihood of bladder delamination
US6715559B2 (en) 2001-12-03 2004-04-06 Western Well Tool, Inc. Gripper assembly for downhole tractors
US6988556B2 (en) * 2002-02-19 2006-01-24 Halliburton Energy Services, Inc. Deep set safety valve
US7121364B2 (en) * 2003-02-10 2006-10-17 Western Well Tool, Inc. Tractor with improved valve system
US7392859B2 (en) * 2004-03-17 2008-07-01 Western Well Tool, Inc. Roller link toggle gripper and downhole tractor
GB2421744A (en) 2005-01-04 2006-07-05 Cutting & Wear Resistant Dev Under-reamer or stabiliser with hollow, extendable arms and inclined ribs
US7624808B2 (en) 2006-03-13 2009-12-01 Western Well Tool, Inc. Expandable ramp gripper
US20080053663A1 (en) * 2006-08-24 2008-03-06 Western Well Tool, Inc. Downhole tool with turbine-powered motor
US20080217024A1 (en) * 2006-08-24 2008-09-11 Western Well Tool, Inc. Downhole tool with closed loop power systems
US7640989B2 (en) * 2006-08-31 2010-01-05 Halliburton Energy Services, Inc. Electrically operated well tools
WO2008061100A1 (en) * 2006-11-14 2008-05-22 Rudolph Ernst Krueger Variable linkage assisted gripper
US8038120B2 (en) 2006-12-29 2011-10-18 Halliburton Energy Services, Inc. Magnetically coupled safety valve with satellite outer magnets
US8919730B2 (en) 2006-12-29 2014-12-30 Halliburton Energy Services, Inc. Magnetically coupled safety valve with satellite inner magnets
GB2457497B (en) 2008-02-15 2012-08-08 Pilot Drilling Control Ltd Flow stop valve
BR112012003678B1 (en) 2009-08-18 2018-12-04 Pilot Drilling Control Limited flow block valve and method to control flow
US8485278B2 (en) * 2009-09-29 2013-07-16 Wwt International, Inc. Methods and apparatuses for inhibiting rotational misalignment of assemblies in expandable well tools
US8573304B2 (en) 2010-11-22 2013-11-05 Halliburton Energy Services, Inc. Eccentric safety valve
WO2012162833A1 (en) * 2011-05-30 2012-12-06 Korchounov Alexandre Rotary steerable tool
US8490687B2 (en) 2011-08-02 2013-07-23 Halliburton Energy Services, Inc. Safety valve with provisions for powering an insert safety valve
US8511374B2 (en) 2011-08-02 2013-08-20 Halliburton Energy Services, Inc. Electrically actuated insert safety valve
US9447648B2 (en) 2011-10-28 2016-09-20 Wwt North America Holdings, Inc High expansion or dual link gripper
US9228413B2 (en) * 2013-01-18 2016-01-05 Halliburton Energy Services, Inc. Multi-stage setting tool with controlled force-time profile
US9534449B2 (en) 2013-10-22 2017-01-03 Halliburton Energy Services, Inc. Hydraulic control of drill string tools
US9488020B2 (en) 2014-01-27 2016-11-08 Wwt North America Holdings, Inc. Eccentric linkage gripper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375239A (en) * 1980-06-13 1983-03-01 Halliburton Company Acoustic subsea test tree and method
EP0459008A2 (en) * 1990-06-01 1991-12-04 Eastman Teleco Company Drilling tool for directional drilling

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1607662A (en) * 1925-07-20 1926-11-23 Boynton Alexander Rotary reamer
US2935615A (en) * 1957-06-24 1960-05-03 Jersey Prod Res Co Well logging tool fluid displacer
US3780809A (en) * 1972-04-12 1973-12-25 Exxon Production Research Co Method and apparatus for controlling wells
US3788136A (en) * 1972-08-11 1974-01-29 Texaco Inc Method and apparatuses for transmission of data from the bottom of a drill string during drilling of a well
DE3219362C1 (en) * 1982-05-22 1983-04-21 Wirth Co Kg Masch Bohr Method and device for drilling holes
AT32930T (en) * 1985-01-07 1988-03-15 Smf Int Flow remote controlled device for actuating, in particular, stabilizers in a drill string.
GB8526876D0 (en) * 1985-10-31 1985-12-04 Swietlik G Locking device
FR2641320B1 (en) * 1988-12-30 1991-05-03 Inst Francais Du Petrole Remote equipment operation device comprising a needle-needle system
FR2641387B1 (en) * 1988-12-30 1991-05-31 Inst Francais Du Petrole Method and device for remote control of rod training equipment by information sequence
FR2648861B1 (en) * 1989-06-26 1996-06-14 Inst Francais Du Petrole Device for guiding a rod train in a well
GB8915302D0 (en) * 1989-07-04 1989-08-23 Andergauge Ltd Drill string stabiliser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375239A (en) * 1980-06-13 1983-03-01 Halliburton Company Acoustic subsea test tree and method
EP0459008A2 (en) * 1990-06-01 1991-12-04 Eastman Teleco Company Drilling tool for directional drilling

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EP0524042A1 (en) 1993-01-20
US5310012A (en) 1994-05-10
FR2679293B1 (en) 1999-01-22
CA2074036A1 (en) 1993-01-17
FR2679293A1 (en) 1993-01-22

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