WO1993020328A1 - Systeme de traitement de sediments gras - Google Patents

Systeme de traitement de sediments gras Download PDF

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Publication number
WO1993020328A1
WO1993020328A1 PCT/GB1993/000673 GB9300673W WO9320328A1 WO 1993020328 A1 WO1993020328 A1 WO 1993020328A1 GB 9300673 W GB9300673 W GB 9300673W WO 9320328 A1 WO9320328 A1 WO 9320328A1
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WO
WIPO (PCT)
Prior art keywords
slurry
cuttings
seawater
tank
mixture
Prior art date
Application number
PCT/GB1993/000673
Other languages
English (en)
Inventor
Marshall Graham Bailey
Original Assignee
Rig Technology Limited
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 Rig Technology Limited filed Critical Rig Technology Limited
Priority to GB9419294A priority Critical patent/GB2279980B/en
Publication of WO1993020328A1 publication Critical patent/WO1993020328A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00—Dumping solid waste
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0057—Disposal of a fluid by injection into a subterranean formation

Definitions

  • This invention relates generally to a system for the processing of oily cuttings generated during drilling at a drilling site either onshore or offshore to enable the cuttings to be injected into the downhole formation in order to avoid the need to discharge the cuttings into the environment.
  • oily cuttings are generated as waste, and it is known procedure to inject those cuttings, in admixture with sea water, into the wellhead formation so that waste discharge into the environment is minimised.
  • the slurry properties must be such that the slurry is suitable for:
  • a method of processing oily cuttings generated at a drilling site in order to produce a slurry suitable for injection into a drilling site formation either at the drilling site at which the cuttings are generated or at a remote site, according to which the oily cuttings are agitated with seawater or freshwater, the mixture is pumped to a roller mill grinding means, the mixture is ground within the mill so that particles of greater size are proportionaly degraded more than particles of smaller size, and the solid-rich slurry emergent from the grinding means is fed to the slurry tank at which if necessary seawater and/or chemicals are added to produce a slurry of desired rheological properties suitable for injection into the formation.
  • apparatus for processing oily cuttings generated during drilling at a well formation comprising a primary mixing tank at which the cuttings are mixed with seawater, said tank containing an agitator; pump means, a roller mill grinding means to which the cuttings/seawater mixture is pumped and in which the mixture is ground, degrading particles of greater size more than particles of small size; and a slurry tank at which a solid-rich slurry from the grinding means is of necessity mixed with seawater and/or chemicals to produce a slurry of desired rheological properties suitable for injection into the formation, said slurry tank also containing an agitator.
  • the roller mill grinding means is a mill having a fixed vertical cylindrical casing containing a motor driven shaft which turns one or a plurality of vertical spirally grooved rollers which in use grind the particles of the cuttings/seawater mixture against the wall of the casing, while conveying the mixture from the top to the bottom of the casinq.
  • the mixture fed to the grinding rollers preferably contains between 15 and 60% solid cuttings.
  • the composition of the mixture is preferably controlled in the primary mixing tank, which may incorporate a density meter.
  • a density meter may also be provided in the slurry tank, where the composition of the slurry emergent from the grinding mill is controlled by addition of seawater and/or chemicals to posses rheological properties suited to subsequent injection of the slurry into the formation.
  • the oily cuttings are preferably fed to the primary mixing chamber by a conveyer, such as a spiral screw conveyor, receiving the cuttings direct from the shale shakers.
  • a conveyer such as a spiral screw conveyor
  • Efficient operation of the grinding means is best achieved when the cuttings/seawater mixture is fed to said grinding means at a substantially uniform rate.
  • the aforesaid pump means enables such a substantially uniform supply rate to be achieved.
  • the slurry of required composition Before being injected into the formation, the slurry of required composition may be transferred to a slurry storage tank, also equipped with an agitator.
  • the slurry may be injected at the site at which the drilling is taking place or at a remote site where a suitable well exists.
  • cuttings may be transported from the drilling site at which they are generated and moved to an alternative site where they are then ground to a slurry and injected downhole or moved to a 3rd site and injected.
  • Figure 1 is a diagram of a complete cuttings processing system, from cuttings collection to injection into a formation
  • Figures 2, 2A and 2B are plan front elevational and side elevational views of a slurry tank which is part of a module also having a roller grinding mill unit;
  • Figure 3 is a plan view of a primary mixing tank module
  • Figure 4 is a pictoral view of a roller grinding mill
  • Figures 4A and 4B show the mill diagramatically in horizontal and vertical cross-section
  • Figure 5 shows in plan, the system installed on a platform adjacent a wellhead
  • Figure 6 is an enlarged plan view of part of the appratus shown in Figure 5;
  • Figure 7 shows part of the appartus shown in Figure 6;
  • Figure 8 is a section along the line x-x of Figure 7
  • the general aim of the system is to process cuttings generated during the course of drilling a well such that the cuttings may be injected downhole into the formation, thus avoiding the need to discharge the cuttings to the environment.
  • the system will accept the oily cuttings discharged from the existing solids control equipment 1. It will then transport the cuttings on a system of screw conveyors 10 to a processing unit 11 ( Figure 2A) where the cuttings are ground to a very fine size, in a grinding mill unit 18 comprising three grinding mills 18a 18b and 18c, mixed with seawater and chemicals as required so as to produce a stable slurry having the desired rheological properties.
  • the slurry will then be pumped to a 150 barrel capacity storage tank 28 and then to a variable speed Triplex pump 30 which pumps the slurry at the required rate, and under controlled pressure, to the wellhead and via the annulus between the outer and inner casing strings for injection into the formation 100 (Figure 5).
  • Part of the annulus between the two casings is left uncemented and open to the formation into which the fine slurry is to be injected, at a pressure not exceeding 1700 psi.
  • a more specific aim of the system is to handle up to 15 tonnes of cuttings per hour with injection rates into the formation of typically 3-6 barrels per minute at varying injection pressures, treating substantially all the oily cuttings that are generated and thereby minimising or (ideally) avoiding discharge of oil to the sea.
  • the system is preferably able to accept small quantities of both oily wash water and whole mud for downhole disposal.
  • the speed and pressure output of the Triplex pump 30 can be accurately controlled with several independent methods of prevention over-pressurisation.
  • the arrangement of screw conveyors 10 comprises a spiral flight (screw) conveyor 10a installed in the cuttings ditch, to collect the cuttings from the shale shakers 2, 3, 4 and 5 forming part of the solids control system 1.
  • the discharge from the conveyor falls into another screw conveyor 10b set at right angles to the first unit and parallel to the shaker house walkway wall 102 in Figure 5).
  • the second conveyor 10b transports the cuttings in the direction towards and cantilever beam 104. Although only about 3.8m long the second conveyor elevates the cuttings prior to their discharge into a third conveyor 10c.
  • This third conveyor will be mounted parallel to the cantilever beam 104 and will further elevate the cuttings prior to their discharge into the cuttings processing unit 11 which can be sited between the shaker house and the pipe rack and between the starboard cantilever beam and the inboard jacking system for the starboard leg 106.
  • the first and third conveyors 10a, 10c will be powered by electric motors and the second conveyor 10b will be driven by a variable speed hydraulic motor.
  • the cuttings processing unit can if desired be built to fit into the available space, identified during a preliminary rig survey.
  • 2A and 2B unit 11 comprises two modules 13 and 15, one module 13 being stacked on top of the other module 15.
  • the module 15 contains a primary mix tank 14 for accepting cuttings and mixing them in the proper ratio with seawater to provide a mixture having the correct density
  • the module 13 contains a slurry tank 22 also on the unit which accepts the ground cuttings and seawater slurry from the grinding mills 18a, 18b and 18c. Additions of more seawater may be made to the slurry while it is in the slurry tank 22 so as to provide a slurry having the desired rheological properties.
  • Both tanks are fitted with agitators referenced 14a and 22a driven by respective electric motors 14b and 22b.
  • the three grinding mills 18a, 18b and 18c each of which is known commercially as a Szego 320-1 (Trade Mark) roller grinding mill. These are suppled with a wet feed of cuttings and seawater, at the correct density, by mono pump 16a, 16b and 16c, each taking mixture from the primary mix tank 14 to a respective one of the three mills 18a, 18b and 18c.
  • the Szego 320-1 mills are powered by electric motors, but may be hydraulically driven. Speed of operation of each mono pump can be varied, to control the rate of feed or fluid to the mill to which that pump is dedicated, pumps 16a, 16b and 16c are dedicated to mills 18a, 18b and 18c respectively.
  • centrifugal pump 20 is also mounted on the unit 11, and is operable to transfer slurry from the slurry tank to a storage tank 28.
  • the upper module 13 also houses control equipment for the grinding and slurrying process. It also contains the electric starters for the motors for the mills 18, the agitators and the mono and centrifugal pumps on the unit as well as the hydraulic power pack used to power the mono pumps and the conveyor.
  • the slurry storage tank 28 is located in a position which is also determined during the preliminary rig survey.
  • the tank, complete with two electrically driven geared agitators 28a and 28b has a centrifugal pump used to transfer the slurry to the Triplex Pump 30.
  • the electric starters for the agitators and pump are mounted on the tank and employ a separate power supply.
  • the Triplex pump 30 used for downhole injection is powered by a 110 kw electric motor 31 driving a hydraulic pump 32.
  • This power pack drives a high torque, low speed hydraulic motor directly coupled to the input shaft of the pump 30, which is a Gardner Denver PE-5 Triplex (Trade Mark) pump.
  • the electric starters for the hydraulic power pack 32 driving the Triplex pump 30, plus controls for the pump are located on the hydraulic power pack 32, separate from the grinding mill unit 18 and require a separate power supply.
  • the primary conveyor 10a used to collect cuttings from under the shale shakers 2, 3, 4 and 5 is a 300mm diameter screw conveyor. This conveyor is rated for up to 20 MT/HR of cuttings.
  • the primary conveyor discharges into a variable speed secondary conveyor 10b.
  • An emergency overload dump facility such that excess, or all solids, may be diverted overboard is installed. Normally, cuttings are discharged into the primary mix tank 14.
  • the cuttings processing unit comprises two modules.
  • the unit is 3.0m x 3.0m in plan, by 5.2m high and weighs approximately 15 tonnes when empty.
  • the main frames of the modules 13 and 15 are made from steel structural hollow section and the modules are complete with lifting points and forklift entries - details of the cutting processing unit 11 can be seen in Figures 2, 2A and 2B/
  • the primary mix tank 14 measures 2.1 meters diameter by 1.8 meters high. This tank is used for accepting cuttings and mixing them with seawater to provide a mixture having the correct density for feed to the grinding mills 18a, 18b and 18c.
  • the tank is stirred by a mixer driven by an 11 K motor 14b through a reduction gearbox 14c. The mixer used to keep the cuttings in suspension in the seawater.
  • the tank 14 is also equipped with a level sensor 36 which will close the seawater valve 34 if the tank becomes too full and which will de-energise the pumps 16 if the level of mixture in the tank 14 becomes too low. Both instruments display their outputs at the control console. Detail of the primary mix tank 14 can be seen on Figure 3.
  • Three variable speed hydraulically driven mono pumps 16a, 16b and 16c provide flow from the slurry tank to each grinding mill.
  • the main task of grinding the cuttings and seawater mixture to a very fine paste is achieved by 3 No. Szego 320-1 (Trde Mark) grinding mills.
  • the mills will each run at 580 RPM powered by a 15Kw, 480v, 60 Hz 2 phase electric motor, or by a suitably sized hydraulic motor.
  • the centrifugal pump in the lower module of the unit 12 is a Denver Orion, 100/75 (Trade Mark) pump powered by a 22 Kw electric motor 20a via a belt drive. It takes a mixture of cuttings and seawater from the primary mix tank 14 and can recirculate it through 4 inch pipework returning it to the primary mix tank 14 or can divert the fluid to the slurry tank 22, or to storage tank 28.
  • the unit (11) houses a second tank (in the module 13), a slurry tank. This is 1.85 meters in diameter and 1.4 meters high. It is equipped with an agitator 22a powered through a reduction gearbox 22c by a 5.5 Kw electric motor 22b.
  • the tank accepts a slurry of ground cuttings and seawater from the grinding mills 18, which are mounted directly next to the slurry tank 22. Additions of more seawater can be made to the slurry stored in the slurry tank so as to provide a final slurry having the desired rheological properties for downhole injection.
  • the tank is also equipped with a level sensor 40 which will close the seawater valve if the tank became too full and which will give an alarm signal if the level of mixture in the tank becomes too low.
  • Another 22 Kw Denver Orion 100/75 (Trade Mark) centrifugal pump is mounted in the upper module 13 of the processing unit 11. This pump is used to transfer slurry from the slurry tank to the slurry storage tank.
  • a 22 k hydraulic power unit is included in the system. This unit powers the hydraulically driven mono pumps and solids conveyor.
  • the processing plant contains a control console from where the operator can monitor and control all of the powered plant within the unit 11.
  • the console is able to display the density of the fluid in the primary mix tank 14, the level of fluid in the primary mix tank 14, the density of slurry in the slurry tank 22, the level of fluid in the slurry tank 22, the level of slurry in the slurry storage tank 28, the activity of each electric motor in the CPP (running or stopped).
  • the electric starters for the unit 11 are located close to the control console, as is the main isolator for the electric supply to the unit.
  • the console also contains controls to start all of the motors in the unit (2) and open and close the pneumatic valves governing the supply of seawater and the output of slurry to the storage tank.
  • the controls for the low level and high level alarm heights on the three tanks are resettable.
  • the tank is also fitted with an ultrasonic level sensor 42 which indicates the level of the contents and raises an alarm when the high or low level conditions are approached. The alarm will warn the operator of the shortage of slurry for pumping to the Triplex pump 30 such that he can shut down the Triplex pump 30 and close the valve on the supply line to the Triplex pump 30.
  • a Denver Orion 75/50 (Trade Mark) centrifugal pump 44 powered by 22Kw electric motor 48 is used to transfer slurry from the holding tank to the Triplex pump. ' Triplex Pump (30)
  • the Triplex pump 30 used for downhole injection is a Gardner Denver PE-5 (Trade Mark) pump. It is hydraulically driven using a variable displacement Staffa piston motor directly driving the input shaft of the pump.
  • the Staffa motor obtains its supply of oil from an independent power pack, this power pack has a 110 Kw electric motor 31 driving a variable displacement pump.
  • the combination of variable displacement hydraulic pump and variable displacement hydraulic motor provides an almost constant horsepower system that is very energy efficient and results in optimum performance and the PE-5 pump 30.
  • the speed and operation of the Triplex pump 30 is controlled by manual operation at the hydraulic power pack 32. Electrical starters for the Triplex pump are mounted at the hydraulic power pack and require an electric supply separate from both the CPP and the storage tank.
  • the Triplex pump is fitted with a pressure relief valve on the output side, but in addition, the pressure of the pump is controlled by the setting of the pressure relief valve in the hydraulic circuit. Long stop protection is provided by the fuses for the electric motor.
  • the output from the PE-5 pump connects to steel high pressure pipework, which carries the slurry to the wellhead 100 and then to the annulus between the casings.
  • the Triplex pump is rated for a maximum intermittent rate of 2.5 bbls/minute at 1700psi, and normal operation of 2.5 bbls/minute at 700psi.
  • Cuttings are collected from the shale shakers 2, 3, 4, 5 by means of spiral flight conveyors.
  • the primary conveyor 10a is mounted parallel with the shakers and collects the cuttings as they fall from the shale shakers. It moves the cuttings to the secondary conveyor 10b.
  • Facility is installed for a conveyer 10a to move all of the cuttings or part of the cuttings to be dumped overboard in an emergency.
  • the cuttings are discharged from the feed conveyor arrangement 10 into the primary mix tank 14 of the grinding/process unit 11.
  • This tank is equipped with an 11kW agitator.
  • a density measurement device 36 is fitted to the primary mix tank 14. This unit will supply data used to control the opening and closing of the seawater valve 34 in order to control the density of the cuttings/seawater mixture within the tank 14.
  • a display showing the density of the mixture in the tank is housed on the operator's control console.
  • Solids entering the system are subject to degradation during passage through all areas of the system. Solids thus entering the mix tank are exposed to water, if the solids are naturally hydratable they will absorb water, become increasingly soft and commence breakdown assisted by the vigorous action of the agitator operating in this tank. When however the solids are non-hydratable such as is the case with sand and limestone, little degradation will be achieved during the passage of the solid through the mix tank.
  • the pumps used are Denver Orion 100/75 D (Trade Mark) centrifugal pumps with belt drives from 22.0 KW electric motors.
  • the wear parts of the pumps are made from high chrome iron alloy to BS 4544; 1974: Grade 3D.
  • the fluid in the primary mix tank 14 can be recirculated and returned to the primary mix tank through a nozzle where degradation will occur.
  • the harder materials such as sandstone and limestone, will not be sufficiently degraded in size by the pumping operation, to provide a suitable, solids-rich slurry for supply to the Triplex pump for downhole injection.
  • the described system carries out most of the degradation of the solids by means of Szego (Trade Mark) grinding mills 18.
  • Three variable speed Mono pumps 16 pump the required Quantity of slurry forward to three mills. One pump is dedicated to each mill.
  • the mixture of cuttings and seawater is supplied to the three grinding mills by the 3 Mono pumps 16.
  • the rate of feed to each mill is controlled by controlling the Mono pump speed.
  • the mills are each driven at approximately 580 rpm by a 15 KW electric motor (the speed may be varied.
  • the motor drives the central shaft of the mill to which are attached four vertical, grooved, steel rollers.
  • the rollers are forced outwards against the wall of the mill by the centrifugal force generated as a result of their rotation.
  • Figure 4 Details of one of the roller grinding mills can be seen in Figure 4.
  • the horizontal cross section of Figure 4A shows a three roller mill, but four rollers are preferred.
  • the cuttings/seawater mixture is supplied to the top of the mill and is forced against the outer wall by the rotation of a core and the orbital rotation of the rollers 50, 52 and 54.
  • the rollers then grind and mix the particles and seawater and transport the resulting slurry downwards within the mill by means of the grooves in the rollers.
  • the slurry flows from a spout 5 located on the lower part of the mill body.
  • the ground slurry falls into the slurry tank. This tank is equipped with an agitator powered by a 5.5 KW motor driving through a reduction gearbox.
  • the mills may be supplied with a mixture containing up to 48% solids by weight.
  • the resulting slurry may be too viscous or dense for pumping downhole, in which case te properties of the slurry may need to be altered by the addition of extra seawater.
  • a level sensor 36 is mounted on the primary mix tank 14. This monitors the level of fluid within the tank and sounds an alarm when the high level condition is approached. At the high level it closes the seawater valve to prevent overflow of the tank.
  • the level sensor 36 actuates an alarm when the low level condition is being approached and at the low level it switched off the pumps 16 used to transfer the cuttings/seawater mixture to the grinding mills 18.
  • the mixture of cuttings and seawater, at the required average density, is pumped to the top of each mill. After entering the mill, the fluid is forced to the wall of the mill by the rotation of the inner core and grinding rollers.
  • Each mill has four vertical, grooved, steel rollers being rotated by a central drive turning at a suitable speed (for example 600 rpm) .
  • the cuttings and seawater are soon transformed into a slurry or paste, depending upon the concentration of solids in the mixture.
  • the slurry or paste is moved down the wall of the mill by the spiral action of the grooved rollers with the slurry being repeatedly squashed between the roller and the mill wall. This action results in positive grinding.
  • the grinding mills operate at their greatest efficiency when the output is like a paste. This requires solids concenctration of 40% to 50% by weight in the feed material to the mills.
  • the grinding is very fine, and the resulting slurry exhibits useful rheological properties, even when made from virtually inert rocks, such as gravels, quartz sandstones and hard limestones.
  • the slurry may have much higher rheological properties than it is practical to use, and it may be desirable to reduce the solids contents of the feed in order to achieve a less thick slurry, suitable for downhole injection.
  • the system allows for slurry to be diluted as required to make it suitable for downhole injection.
  • the slurry tank 22 is fitted with a slurry density measurement device 38 which displays the density of the slurry on the control console. If required it can be set to make automatic additions of seawater to the slurry tank so as to maintain a desired density.
  • Ground slurry is supplied to the Triplex pump 30 by the Denver Orion 100/75 centrifugal pump 44 mounted on the slurry storage tank.
  • the Triplex pump used can be a Gardner Denver PE-5 pump powered by Staffa hydraulic motor which is directly coupled to the PE-5 input shaft.
  • a 110 KW D.O.L starting electric motor drives a variable displacement hydraulic pump on a separate power pack.
  • the power pack and PE-5 pump unit are linked by 3 No. hydraulic hoses.
  • Pressure relief valves within the power pack control the hydraulic pressure supplied to the Staffa motor. This in turn limits the output pressure of the PE-5 pump to the wellhead.
  • the PE-5 pump is fitted with a "pop-off" valve that prevents over-pressurisation of the discharge line and pressures can be monitored on th ⁇ pressure guage fitted to the PE-5 pump.
  • Precise control of the Triplex pump speed and output pressure can be achieved by regulation of the hydraulic controls on the power pack.
  • Pumping rates are typically between 1 and 2.5 barrels per minute at 1700 psi. But much higher rates and pressures may be used if pumping capacity is available.
  • the high pressure pump is a high cost item to purchase, maintain and operate.
  • the use of consumables and maintenance required is directly proportional to the quantity of coarse solids in the feed.
  • solids would undoubtedly be reduced in size during high pressure pumping, reliance on this area of the circuit would be entirely incompatible with the function of the pump and economics of operation. It is thus desirable that the circuit is designed to achieve all size reduction of solids prior to the high pressure pump.
  • the milling circuit is designed to eliminate the presence of coarse particles in the pump feed.
  • the system is designed to commence hydration of cutting in the slurry tank, allow breakup of highly hydratable clays in the low pressure pump, and some reduction of large solids.
  • Positive milling solids takes place in the mill to within a narrow particle size range, such as to achieve an optimum slurry compatible with high pressure pumping, low erosion and abrasion on wellheads and tubulars, maximum solids content, with reduced chemical additions and ideal for injection into the formations.

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  • Environmental & Geological Engineering (AREA)
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Abstract

On décrit un procédé et un appareil destinés à traiter les sédiments gras générés dans un puits, afin de produire une boue pouvant être injectée dans une formation souterraine. Les sédiments gras sont soumis à agitations à l'aide d'eau de mer dans, par exemple, un réservoir de mélange primaire contenant un agitateur. Le mélange est ensuite pompé à l'aide d'un moyen de pompage, et envoyé vers un dispositif de broyage cylindrique où il est broyé de telle sorte que les particules de grandes tailles sont proportionellement plus réduites que les particules de petites tailles. La boue riche en solides sortant du moyen de broyage est envoyée dans un réservoir approprié où, si nécessaire, sont ajoutés de l'eau de mer et/ou des produits chimiques afin de produire une boue possédant des propriétés rhéologiques désirées pour qu'elle puisse être injectée dans la formation.
PCT/GB1993/000673 1992-03-31 1993-03-31 Systeme de traitement de sediments gras WO1993020328A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9419294A GB2279980B (en) 1992-03-31 1993-03-31 Cuttings processing system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929206968A GB9206968D0 (en) 1992-03-31 1992-03-31 Cuttings processing system
GB9206968.1 1992-03-31

Publications (1)

Publication Number Publication Date
WO1993020328A1 true WO1993020328A1 (fr) 1993-10-14

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AU (1) AU3896793A (fr)
GB (2) GB9206968D0 (fr)
WO (1) WO1993020328A1 (fr)

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WO1999054588A1 (fr) * 1998-04-21 1999-10-28 Bulk Mixer, Inc. Dispositif de melange de fluide de forage et procede correspondant
WO2000045028A1 (fr) * 1999-01-28 2000-08-03 Halliburton Energy Services, Inc. Traitement de suspension
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EP2111495A2 (fr) * 2007-01-31 2009-10-28 M-I Llc Suspension épaisse de haute densité
EP2126274A2 (fr) * 2007-01-31 2009-12-02 M-I Llc Utilisation d'une citerne à déblais pour préparer une boue sur une installation de forage
US7798218B2 (en) 2005-08-25 2010-09-21 Environmental Technology As Apparatus and a method of fragmenting hard particles
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US11603744B2 (en) 2020-07-17 2023-03-14 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11193361B1 (en) 2020-07-17 2021-12-07 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11365615B2 (en) 2020-07-17 2022-06-21 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11255175B1 (en) 2020-07-17 2022-02-22 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11994014B2 (en) 2020-07-17 2024-05-28 Bj Energy Solutions, Llc Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations
US11867045B2 (en) 2021-05-24 2024-01-09 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US11639654B2 (en) 2021-05-24 2023-05-02 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods
US11732563B2 (en) 2021-05-24 2023-08-22 Bj Energy Solutions, Llc Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

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GB9206968D0 (en) 1992-05-13
GB2279980A (en) 1995-01-18
GB9419294D0 (en) 1994-11-09
GB2279980B (en) 1995-08-23

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