CN104533335A - Integrated oil and gas reservoir protection tool assembly - Google Patents
Integrated oil and gas reservoir protection tool assembly Download PDFInfo
- Publication number
- CN104533335A CN104533335A CN201410784832.7A CN201410784832A CN104533335A CN 104533335 A CN104533335 A CN 104533335A CN 201410784832 A CN201410784832 A CN 201410784832A CN 104533335 A CN104533335 A CN 104533335A
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- China
- Prior art keywords
- running tool
- packer
- fastening means
- gas reservoir
- central tube
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Classifications
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
- E21B33/1265—Packers; Plugs with fluid-pressure-operated elastic cup or skirt with mechanical slips
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- 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
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
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- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/04—Ball valves
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses an integrated oil and gas reservoir protection tool assembly. The integrated oil and gas reservoir protection tool assembly is composed of a working barrel, a running tool, a formation isolation valve, a connection tool, a suspension packer and a switch tool. The working barrel, the formation isolation valve, the connection tool and the suspension packer are integrally connected through threads. The running tool is arranged in the working barrel and penetrates through the formation isolation valve. The lower end of the running tool is connected with the switch tool through threads. The integrated oil and gas reservoir protection tool assembly has the advantages that the integrated oil and gas reservoir protection tool assembly can be put into an oil and gas reservoir along with a sand control pipe pillar and achieve the disengagement function of the running tool, the formation isolation valve and the connection tool; leakage and losses of completion liquid generated in the well completion and workover processes, and thus the oil and gas reservoir is protected from being contaminated; operation efficiency can be improved, the well completion cost is lowered, the difficulty in later workover processing is lowered, and blowout and well kick and other accidents are prevented; the suspension packer and the formation isolation valve are replaced conveniently in the maintenance process.
Description
Technical field
The present invention relates to oil field development production technical field, in particular, the present invention relates to a kind of oil and gas reservoir protection instrument assembly produced for oil field development.
Background technology
Along with the development of Offshore Oil Industry, the operation timeliness that oil field development is produced, the safety of operating cost and operation more and more become key issue, and especially in completion and workover treatment process, oil and gas reservoir protection instrument plays an important role.
During completion and workover treatment, in order to prevent the generation of the phenomenon such as blowout, well kick, need constantly in pit shaft, to pour into completion fluid, if leak-proof measure is improper, not only completion fluid meeting contaminated oil gas reservoir, but also completion cost can be increased; In addition, if the density of completion fluid and the amount of pouring into are not, Oil/gas Well kill-job was lost efficacy, and also well kick may occur, even blowout.The effect of oil and gas reservoir protection instrument, is prevented oil and gas reservoir from polluting exactly and is prevented the generation of blowout by the effect of its stratum safety valve.
At present, the oil-gas reservoir protection technology relative maturity of international mainstream, but because oil and gas reservoir used protection instrument is the bottom connecting hanging packer, so, once reservoir protection defective valve, just all must trip out together with the tubing string of hanging packer and its underpart, therefore, post-processed is quite complicated; Domestic oil and gas reservoir used protection instrument is then main mainly with sleeve type and simple flap valve, although started recent years to develop ball-type oil and gas reservoir protection instrument, its safety and actual effect are all poor, and the difficulty of later stage well workover process is also very large.Up to now, when also not finding protect instrument to be installed on hanging packer top oil and gas reservoir and carry out post-processed, motionless bottom tubing string only changes separately the technical scheme of oil and gas reservoir protection instrument.
Summary of the invention
Object of the present invention is exactly solve above problem existing for existing oil and gas reservoir protection instrument, and provides a kind of for this reason and together can enter down with sand control pipe, have two way seal function and comprise the integral type oil and gas reservoir protection instrument assembly of hanging packer and formation isolation valves.
Technical scheme of the present invention is:
A kind of integral type oil and gas reservoir protection instrument assembly, comprises seating nipple, also comprises running tool, formation isolation valves, fastening means, hanging packer and the switching tools installed with described seating nipple concentric; Described seating nipple, formation isolation valves, fastening means and hanging packer are linked in sequence by screw thread and are integrated, described running tool to be arranged in described seating nipple and to run through described formation isolation valves, and the lower end of described running tool is threaded described switching tools;
Described running tool, comprise running tool central tube, the upper end of described running tool central tube is provided with and is threaded and the running tool top connection fixed by anti-rotation shear pin, the lower end of described running tool central tube is provided with and is threaded and the running tool lower contact fixed by fixing pin, be provided with running tool lining in the middle part of described running tool central tube, described running tool lining be provided with the slide block that fixing pin is installed; Running tool spring is provided with between described running tool top connection and described running tool lining, the outer setting of described running tool spring has the running tool overcoat being positioned at described running tool top connection lower end, running tool elastic claw is provided with between described slide block and running tool lower contact, be provided with running tool piston bush inside described running tool elastic claw, described running tool piston bush is fixed by the shear pin of its upper end and the fixing pin of lower end thereof and described running tool central tube and is located with shop bolt and lock ring; The piston that piston fixing pin is installed is provided with in described running tool piston bush;
Described formation isolation valves, comprise and being arranged on ball seat and the ball valve fixed by gland, the upper end of described ball valve is provided with the connected power transmission cover of power transmission pin; The upper end of described power transmission cover connects isolating valve elastic claw by adapter sleeve, the lower end of described power transmission cover is bumped into the internal diameter of described gland, the inner side of described power transmission cover is provided with upper sleeve gasket, the arranged outside of described power transmission cover has isolating valve overcoat, is provided with upper spring between the high spot outside the inner side half the circumference of the sleeve where it joins the shoulder of described power transmission cover and described upper sleeve gasket; The upper end of described isolating valve elastic claw connects isolating valve top connection by force transmission joint; The lower end of described ball valve is provided with the lower sleeve gasket being bumped into described ball seat, and the lower end of described lower sleeve gasket connects isolating valve lower contact, is provided with lower spring between the outside half the circumference of the sleeve where it joins the shoulder of described lower sleeve gasket and described isolating valve lower contact;
Described fastening means, comprises axle, and the top of described axle is provided with fastening means top connection, and the middle part of described axle is provided with spacing ring and the fastening means elastic claw of spline installation, and the bottom of described axle is provided with fastening means lower contact; The arranged outside of described fastening means top connection has with the fixing urceolus of shear pin, and the top of described urceolus is provided with baffle ring, and the lower end of described urceolus is set to A petal design; The inside of described fastening means elastic claw is provided with shear pin and the fixing support ring of described axle, and the lower end of described fastening means elastic claw is provided with left-handed foreign side button; Guide shoe is installed in the bottom of described fastening means lower contact, is provided with module sealing between the shoulder of described fastening means lower contact and described guide shoe;
Described hanging packer, comprise packer central tube, the threaded upper ends connection of described packer central tube is detained with left-handed foreign side in described fastening means the left-handed interior side agreed with mutually and is detained, the bottom of described left-handed interior side's button is provided with the packer piston bush be threaded with described packer central tube, the external screw-thread of described left-handed interior side's button connects gland, packer piston is fixed with shear pin in described packer piston bush, packer lock ring is provided with between described packer piston and described packer central tube, described packer piston order installs rule ring, packing element and lower rule ring, the lower thread of described lower rule ring connects upper cone, and the slips cage that in described upper cone, bushing setting is fixed with shear pin installs slips in described slips cage, the centre position of described slips is provided with spring leaf, and the bottom of described slips is installed with the fixing lower cone of pin, and the lower thread of described lower cone connects packer lower contact, be provided with the solution seal ring fixed with described packer central tube between described lower cone and described packer lower contact, described solution seal ring lower end is provided with the fixing release ring of deblocking pin, the top of described packer central tube is provided with the B petal design of agreeing with mutually with A petal design in described fastening means,
Described running tool top connection, running tool lower contact, running tool piston bush, between piston and described running tool central tube, all with O RunddichtringO realize sealing.
Force transmission joint in described formation isolation valves and between isolating valve top connection, between power transmission cover and isolating valve overcoat, between power transmission cover and upper sleeve gasket, between isolating valve overcoat and ball seat and isolating valve lower contact and between ball seat and lower sleeve gasket, all adopts O RunddichtringO to realize sealing.
Between described fastening means top connection and axle, between described support ring and axle and between described fastening means lower contact and axle, all realize sealing with O-ring seals.
Piston bush in described hanging packer, piston, upper rule ring, packing element, lower rule ring and separate between seal ring and described packer central tube, all adopt O RunddichtringO to realize sealing.
Instant invention overcomes many defects of prior art, its beneficial effect is:
(1) rational in infrastructure, convenient operation, applied widely, can with entering under sand control pipe one time and realizing the function of slipping out of the hand of running tool, formation isolation valves and fastening means.
(2) leakage of completion fluid in completion, well workover process can be reduced, thus protection oil and gas reservoir is not contaminated, and prevents the generation of the accident such as blowout, well kick, improve operation actual effect simultaneously, reduce the difficulty of completion cost and later stage well workover process.
(3) formation isolation valves described in is to have the ball valve of two way seal function for core, can by switching tools being carried or transfers the switch realizing ball valve, and the big orifice structure design of described formation isolation valves can make the tubing string of routine work normal through, enter operation under not affecting sand control and completion tubular column.
(4) hanging packer described in can set without the need to special setting tool, adopt set after suppress the lower channel that high pressure mode can close pressure transmission hole conducting, realize described hanging packer setting and testing envelope in tubing string.
(5) connection that the fastening means described in is detained by left-handed side, spline and piston bush realize with described hanging packer and formation isolation valves, not only can ensure that the rotating forward of instrument is sent into, and described hanging packer and the replacing of formation isolation valves when being convenient to keep in repair.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that integral type oil and gas reservoir of the present invention protection instrument assembly is arranged in sleeve pipe.
Fig. 2 is the structural representation of running tool in the present invention.
Fig. 3 is the structural representation of formation isolation valves in the present invention.
Fig. 4 is the structural representation of fastening means in the present invention.
Fig. 5 is the structural representation of hanging packer in the present invention.
Detailed description of the invention
For making technical scheme of the present invention more easily be understood, below in conjunction with accompanying drawing, the present invention is described in detail.
Integral type oil and gas reservoir protection instrument assembly of the present invention, comprises seating nipple 1, running tool 2, formation isolation valves 3, fastening means 4, hanging packer 5, switching tools 6.
Fig. 1 shows the installation situation of integral type oil and gas reservoir of the present invention protection instrument assembly in sleeve pipe.
Be divided into three layers with reference to the installation situation in Fig. 1, figure, outermost layer is sleeve pipe 7; Intermediate layer is that order is arranged on seating nipple 1 in described sleeve pipe 7, formation isolation valves 3, fastening means 4, hanging packer 5 and connects the screen casing 8 of described hanging packer 5; Innermost layer to be mounted in described seating nipple 1 and to run through the running tool 2 of described formation isolation valves 3 and connect the switching tools 6 of described running tool 2; Described seating nipple 1, running tool 2, formation isolation valves 3, fastening means 4, hanging packer 5 and switching tools 6 are concentric and install, and are between each instrument in intermediate layer and between each instrument of innermost layer and are threaded; The connection in outermost layer and intermediate layer is achieved by the grappling of the slips in described hanging packer 5 at described sleeve pipe 7 inwall, and the connection of intermediate layer and innermost layer is achieved with described coordinating of seating nipple 1 inwall upper groove by described running tool 2 Elastic pawl.
Fig. 2 shows the structure situation of running tool 2 in the present invention.
With reference to Fig. 2, described running tool 2 comprises running tool central tube 25, the threaded upper ends of described running tool central tube 25 is connected running tool top connection 21 and is fixed by anti-rotation shear pin 23, the lower end of described running tool central tube 25 is threaded running tool lower contact 222 being fixed by fixing pin, and the middle part of described running tool central tube 25 is provided with running tool lining 29; Described running tool lining 29 installs slide block 210 by fixing pin, between described running tool top connection 21 and described running tool lining 29, running tool spring 27 is installed, the lower end that the outside of described running tool spring 27 is positioned at described running tool top connection 21 is provided with running tool overcoat 26, install running tool elastic claw 214 between described slide block 210 and running tool lower contact 222, the inner side of described running tool elastic claw 214 is provided with running tool piston bush 218; Described running tool piston bush 218 is fixed by the shear pin 213 of its upper end and the fixing pin of lower end thereof and described running tool central tube 25, and is located with shop bolt 211 and lock ring 212; By piston fixing pin 219, piston is installed in described running tool piston bush 218, described running tool top connection 21, running tool lower contact 222, running tool piston bush 218, all realizes sealing with O RunddichtringO between piston and described running tool central tube 25.
Described running tool 2 is connected with described seating nipple 1 by running tool elastic claw 214, and provide positive torque for described tool barrel 1, after the instruments such as its outer field described seating nipple 1, formation isolation valves 3, fastening means 4, hanging packer 5 are lowered into position, can select to take machinery or hydraulic pressure two kinds of modes to be slipped out of the hand.
The operating principle of described running tool 2 is as follows:
Described running tool elastic claw 214 is formed support with described running tool overcoat 26, running tool lower contact 222, can realize running tool and enter for 2 times.Owing to being provided with O RunddichtringO between described running tool piston bush 218 and described running tool central tube 25, therefore can plunger shaft be formed between the two, when suppressed by pressure transmission hole make described running tool piston bush 218 moves time, running tool elastic claw 214 described in driving is moved up thereupon, regains to make described running tool elastic claw 214.
The another kind of retract mode of described running tool elastic claw 214 makes described running tool top connection 21 rotate forward 1/3 circle, and anti-rotation shear pin 23 described in shearing with consequent shearing force press down described running tool top connection 21, thus the running tool central tube 25 described in driving moves down, running tool elastic claw 214 described in order relatively on move, i.e. recoverable described running tool elastic claw 214.
Fig. 3 shows the structure situation of formation isolation valves 3 in the present invention.
With reference to Fig. 3, described formation isolation valves 3 comprises and to be arranged on ball seat 312 and by the fixing ball valve 311 of gland 39, the upper end of described ball valve 311 connects power transmission cover 35 by power transmission pin 310, the upper end of described power transmission cover 35 connects isolating valve elastic claw 33 by adapter sleeve 34, the lower end of described power transmission cover 35 is bumped into the internal diameter of described gland 39, the upper end of described isolating valve elastic claw 33 connects isolating valve top connection 31 by force transmission joint 32, the outside of described power transmission cover 35 is provided with isolating valve overcoat 36, the inner side of described power transmission cover 35 is provided with upper sleeve gasket 38, upper spring 37 is provided with between high spot outside the inner side half the circumference of the sleeve where it joins the shoulder of described power transmission cover 35 and described upper sleeve gasket 38, the lower end of described ball valve 311 is provided with the lower sleeve gasket 313 being bumped into described ball seat 312, the lower end of described lower sleeve gasket 313 connects isolating valve lower contact 315, lower spring 314 is provided with between the outside half the circumference of the sleeve where it joins the shoulder of described lower sleeve gasket 313 and described isolating valve lower contact 315, between described force transmission joint 32 and isolating valve top connection 31, described power transmission overlaps power transmission between 35 and isolating valve overcoat 36, described and overlaps between isolating valve overcoat 36 between 35 and upper sleeve gasket 38, described and ball seat 312 and described isolating valve lower contact 315 and all adopt O RunddichtringO to realize sealing between described ball seat 312 and lower sleeve gasket 313.
One end of described formation isolation valves 3 is threaded with described running tool 2, and its other end is threaded with described fastening means 4, and connects described hanging packer 5 by described fastening means 4.
The operating principle of described formation isolation valves 3 is as follows:
Described ball valve 311 is fixed by described gland 39 after ball seat 312 is installed, described power transmission cover 35 is connected with described ball valve 311 by power transmission pin 310, when described power transmission cover 35 moves up and down, the rotation of described ball valve 311 can be realized, thus control the switch of described formation isolation valves 3, upper/lower terminal due to described ball valve 311 is separately installed with upper sleeve gasket 38 and lower sleeve gasket 313, therefore under the pressure effect of described upper spring 37 and lower spring 314, remains the sealing to described ball valve 311, be connected because force transmission joint 32 overlaps 35 by adapter sleeve 34 with power transmission, and described force transmission joint 32 connects isolating valve elastic claw 33 by its external screw thread, so, when moving on described switching tools 6, can be driven on the force transmission joint 32 in described formation isolation valves 3 by a series of annexation and move, and the ball valve 311 described in driving rotates forward to closed condition, thereupon, described isolating valve elastic claw 33 moving and enters elastic claw seat in described isolating valve top connection 31 realizes moving spacing, now, described switching tools 6 is carried on continuing can realize slipping out of the hand of described formation isolation valves 3, when described switching tools 6 presses down, then the force transmission joint 32 in described formation isolation valves 3 is driven to move down by a series of annexation, thus make described ball valve 311 rotate backward to open mode, after this, described force transmission joint 32 continues to move down, isolating valve elastic claw 33 described in drive is deviate from realization from the elastic claw seat in described isolating valve top connection 31 to be moved down spacing, now, the inside of described formation isolation valves 3 becomes big orifice due to the open mode of ball valve 311, and described switching tools 6 continues to transfer by the ball valve 311 of open mode.
Fig. 4 shows the structure situation of fastening means 4 in the present invention.
With reference to Fig. 4, described fastening means 4 comprises axle 44, the top of described axle 44 is provided with fastening means top connection 41, the outside of described fastening means top connection 41 is provided with the fixing urceolus 43 of shear pin, baffle ring 42 is installed on the top of described urceolus 43, and the lower end of described urceolus 43 is set to A petal design 411; The middle part of described axle 44 is by spline 47 mounting limit ring 48 and fastening means elastic claw 49, the lower end of described fastening means elastic claw 49 is provided with left-handed foreign side button 412, and the inside of described fastening means elastic claw 49 is provided with the support ring 410 fixed by shear pin and axle 44; The bottom of described axle 44 is provided with fastening means lower contact 414, and guide shoe 416 is installed in the bottom of described fastening means lower contact 414, is provided with module sealing 415 between the shoulder of described fastening means lower contact 414 and described guide shoe 416; Described fastening means top connection 41, described support ring 410 and all realize sealing with O-ring seals between described fastening means lower contact 414 and described axle 44.
One end of described fastening means 4 connects described formation isolation valves 3 by described fastening means top connection 41, and its other end is then connected the supporting hanging packer in its top 5 by the left-handed foreign side button 412 of described fastening means elastic claw 49 lower end with the A petal design 411 of described urceolus 43 lower end.
The operating principle of described fastening means 4 is as follows:
Remove in process at described fastening means 4, described fastening means elastic claw 49 mainly bears the pressure of the bottoms such as described hanging packer 5, screen casing 8, sleeve pipe 7, described urceolus 43 mainly bears described hanging packer 5, between screen casing 8 and described sleeve pipe 7 due to fricative moment of torsion, when described fastening means 4 realizes being connected with described hanging packer 5, its module sealing 415 will be bumped in the central tube of described hanging packer 5, to block intercommunication inside and outside described outstanding packer hanging device 5.
When needs are slipped out of the hand, can suppress from the annular space between described sleeve pipe 7 and the urceolus 43 of described fastening means 4, making described support ring 410 impose shearing force to the shear pin be fixed in axle 44 and be moved upward under pressure promotes makes its lower surface enter in the cannelure of described fastening means elastic claw 49 inside completely, now, the opening portion of described fastening means elastic claw 49 lower end is owing to losing the support force of described support ring 410 and inwardly to shrink and the described hanging packer 5 supporting with its top is thrown off, thus realize slipping out of the hand of described fastening means elastic claw 49.
The another kind method of slipping out of the hand of described fastening means elastic claw 49 is achieved by rotating forward described running tool 2: because the urceolus 43 in described fastening means 4 is connected by the hanging packer 5 that the A petal design 411 of its lower end is supporting with its top, and described hanging packer 5 is by the inwall of slips anchoring in described sleeve pipe 7, therefore, when the running tool 2 on described fastening means 4 top rotates forward, urceolus 43 in described fastening means 4 does not turn, now, fastening means top connection 41, axle 44 and fastening means elastic claw 49 rotate forward together with described running tool 2, when positive torque reaches certain value, the shear pin that described urceolus 43 is fixed on described fastening means top connection 41 is cut off, after this, described running tool 2 continues to rotate forward a fixing turn, the left-handed foreign side button 412 of described fastening means elastic claw 49 lower end is thrown off from detaining back-off in 52 with the left-handed interior side of the supporting described hanging packer 5 be connected in its top, thus realize slipping out of the hand.
Fig. 5 shows the structure situation of hanging packer 5 in the present invention.
With reference to Fig. 5, described hanging packer 5 comprises the packer central tube 56 that its top is provided with B petal design 50, the threaded upper ends connection of described packer central tube 56 is detained the 412 left-handed interior sides agreed with mutually with left-handed foreign side in fastening means 4 and is detained 52, the bottom of described left-handed interior side's button 52 is provided with the packer piston bush 53 be threaded with described packer central tube 56, and the external screw-thread of described left-handed interior side's button 52 connects gland 51; Packer piston 54 is fixed with shear pin in described packer piston bush 53, packer lock ring 55 is provided with between described packer piston 54 and described packer central tube 56, described packer piston 54 lower end order installs rule ring 57, packing element 58, lower rule ring 59, and the lower thread of described lower rule ring 59 connects upper cone 510; Bushing installation slips cage 511 in described upper cone 510 is also fixed with shear pin, installs slips 513, the centre position mounting spring sheet 514 of described slips 513 in described slips cage 511, and the bottom of described slips 513 is installed lower cone 515 and fixes with pin; The lower thread of described lower cone 515 connects packer lower contact 518, be provided with the solution seal ring 517 fixed with described packer central tube 56 between described lower cone 515 and described packer lower contact 518, described solution seal ring 517 lower end is by the fixing release ring 519 of deblocking pin 520; Described packer piston bush 53, packer piston 54, upper rule ring 57, packing element 58, lower rule ring 59 and separate between seal ring 517 and described packer central tube 56 and all adopt O RunddichtringO to realize sealing.
Described hanging packer 5 realizes the connection with described fastening means 4 by the cooperation of A petal design 411 and left-handed foreign side button 412 in the B petal design 50 of its upper end and left-handed interior side's button 52 and described fastening means 4.
The operating principle of described hanging packer 5 is as follows:
Described suspension hanging packer 5 adopt special in suppress mode and realize setting, its setting procedure is: when each instrument in integral type oil and gas reservoir protection instrument assembly is all installed after cooperation puts in place, relative with the pressure transmission hole on the packer central tube 56 in described hanging packer 5 and pass through pitching with the pressure transmission hole of described setting instrument, suppress and pressure is acted on described packer piston 54 and promotes it to proceed to the shear pin of fixing described packer piston 54 is cut off, now, described packer piston 54 continues to move ahead and upper rule ring 57 described in promoting, packing element 58, lower rule ring 59, upper cone 510 is descending, until the shear pin of fixing described slips cage 511 is cut off, the slips 513 be arranged in described slips cage 511 is made to be subject to the active force generation radial displacement of described upper cone 510 and lower cone 515, thus bite the inwall of described sleeve pipe 7, thus coordinate the sealing completely of described packing element 58 and described sleeve pipe 7 inwall, realize the Integral seat sealed of described hanging packer 5.When needing described hanging packer 5 deblocking in work progress, entering corresponding unsealing tool under only needing and can realize its deblocking.
Integral type oil and gas reservoir of the present invention protection instrument assembly can enter with under sand control pipe one time; after it puts in place, directly can suppress in sand control pipe and realize setting and the function such as to slip out of the hand of described running tool 2, formation isolation valves 3 and fastening means 4 of described hanging packer 5.
Formation isolation valves 3 in integral type oil and gas reservoir protection instrument assembly of the present invention, to have the ball valve 311 of two way seal function for core, can pass through above carry or transfer the switch that switching tools 6 realizes described ball valve 311, simple to operate; In addition, described formation isolation valves 3 takes big orifice structure design, can make the tubing string of routine work normal through, enter operation under not affecting sand control and completion tubular column.
Hanging packer 5 in integral type oil and gas reservoir protection instrument assembly of the present invention; can set without the need to special setting tool; suppress the lower channel that high pressure can close pressure transmission hole conducting after setting, realize described hanging packer 5 setting and testing envelope in tubing string.
The fastening means 4 of integral type oil and gas reservoir protection instrument assembly of the present invention; connection and the replacing of described hanging packer 5 and formation isolation valves 3 is realized by left-handed side's button, flower spline and piston bush; the instrument that can ensure rotates forward to be sent into, and facilitates the later stage of isolating valve to change.
Integral type oil and gas reservoir protection instrument assembly of the present invention, the connection of ectonexine instrument is realized by fit in described running tool 2 and fastening means 4, when real time job, enter under the sand control pipe that can form with sleeve 7 and screen casing 8 one time, and certain moment of torsion can be transmitted under special circumstances; Being threaded successively and the connected mode of left-handed side button between described fastening means 4 and hanging packer 5 and spline between described running tool 2, formation isolation valves 3, fastening means 4, can under enter in process to provide and turn round and supply pressure, being convenient in case of emergency is built the pressure by annular space or rotated forward slips out of the hand.
Integral type oil and gas reservoir protection instrument assembly of the present invention, after being lowered into position, by pitching in tubing string, building the pressure and carries out setting of described hanging packer 5 in operation process; After testing sealed knot bundle, press down by building the pressure in tubing string simultaneously and realize slipping out of the hand of running tool; After tripping out sand control service aid, described formation isolation valves 3 is closed automatically, realizes the function of two-way leakproof, blowout prevention.
When entering flow string under the later stage, the formation isolation valves 3 described in tieback, does not affect the normal production order.
When later stage workover treatment needs the formation isolation valves 3 described in replacing, described running tool 2 can be entered down reclaim, the left-handed side that described fastening means 4 and described hanging packer 5 are connected at both detains (left-handed foreign side detain 412 and left-handed interior side detain 52) place throws off, to realize the independent replacing of described formation isolation valves 3.
Due to integral type oil and gas reservoir of the present invention protection instrument assembly can with sand control pipe one time under enter; and there is two way seal function; particularly described fastening means and the connected mode of formation isolation valves and hanging packer are convenient to throw off and are changed; compared to prior art; operation actual effect is good, and safety is high, simple to operate; applied widely, there is good practicality and high technical.
Above with reference to drawings and Examples, schematically describe the technical scheme of integral type oil and gas reservoir protection instrument assembly of the present invention, this description is not restricted.Those skilled in the art will be understood that in actual applications, and in the present invention, some change all may occur the facilities of each instrument, and other staff also may make similar Design under its enlightenment.Special needs to be pointed out is: only otherwise depart from design aim of the present invention, all apparent changes or similar Design, be all included within protection scope of the present invention.
Claims (9)
1. an integral type oil and gas reservoir protection instrument assembly, comprises seating nipple, it is characterized in that: further comprising running tool, formation isolation valves, fastening means, hanging packer and the switching tools installed with described seating nipple concentric; Described seating nipple, formation isolation valves, fastening means and hanging packer are linked in sequence by screw thread and are integrated, described running tool to be arranged in described seating nipple and to run through described formation isolation valves, and the lower end of described running tool is threaded described switching tools.
2. integral type oil and gas reservoir protection instrument assembly according to claim 1, it is characterized in that: described running tool, comprise running tool central tube, the upper end of described running tool central tube is provided with and is threaded and the running tool top connection fixed by anti-rotation shear pin, the lower end of described running tool central tube is provided with and is threaded and the running tool lower contact fixed by fixing pin, be provided with running tool lining in the middle part of described running tool central tube, described running tool lining be provided with the slide block that fixing pin is installed; Running tool spring is provided with between described running tool top connection and described running tool lining, the outer setting of described running tool spring has the running tool overcoat being positioned at described running tool top connection lower end, running tool elastic claw is provided with between described slide block and running tool lower contact, be provided with running tool piston bush inside described running tool elastic claw, described running tool piston bush is fixed by the shear pin of its upper end and the fixing pin of lower end thereof and described running tool central tube and is located with shop bolt and lock ring; The piston that piston fixing pin is installed is provided with in described running tool piston bush.
3. integral type oil and gas reservoir protection instrument assembly according to claim 1, it is characterized in that: described formation isolation valves, comprise and being arranged on ball seat and the ball valve fixed by gland, the upper end of described ball valve is provided with the connected power transmission cover of power transmission pin; The upper end of described power transmission cover connects isolating valve elastic claw by adapter sleeve, the lower end of described power transmission cover is bumped into the internal diameter of described gland, the inner side of described power transmission cover is provided with upper sleeve gasket, the arranged outside of described power transmission cover has isolating valve overcoat, is provided with upper spring between the high spot outside the inner side half the circumference of the sleeve where it joins the shoulder of described power transmission cover and described upper sleeve gasket; The upper end of described isolating valve elastic claw connects isolating valve top connection by force transmission joint; The lower end of described ball valve is provided with the lower sleeve gasket being bumped into described ball seat, and the lower end of described lower sleeve gasket connects isolating valve lower contact, is provided with lower spring between the outside half the circumference of the sleeve where it joins the shoulder of described lower sleeve gasket and described isolating valve lower contact.
4. integral type oil and gas reservoir protection instrument assembly according to claim 1, it is characterized in that: described fastening means, comprise axle, the top of described axle is provided with fastening means top connection, the middle part of described axle is provided with spacing ring and the fastening means elastic claw of spline installation, and the bottom of described axle is provided with fastening means lower contact; The arranged outside of described fastening means top connection has with the fixing urceolus of shear pin, and the top of described urceolus is provided with baffle ring, and the lower end of described urceolus is set to A petal design; The inside of described fastening means elastic claw is provided with shear pin and the fixing support ring of described axle, and the lower end of described fastening means elastic claw is provided with left-handed foreign side button; Guide shoe is installed in the bottom of described fastening means lower contact, is provided with module sealing between the shoulder of described fastening means lower contact and described guide shoe.
5. integral type oil and gas reservoir protection instrument assembly according to claim 1, it is characterized in that: described hanging packer, comprise packer central tube, the threaded upper ends connection of described packer central tube is detained with left-handed foreign side in described fastening means the left-handed interior side agreed with mutually and is detained, the bottom of described left-handed interior side's button is provided with the packer piston bush be threaded with described packer central tube, the external screw-thread of described left-handed interior side's button connects gland, packer piston is fixed with shear pin in described packer piston bush, packer lock ring is provided with between described packer piston and described packer central tube, described packer piston order installs rule ring, packing element and lower rule ring, the lower thread of described lower rule ring connects upper cone, and the slips cage that in described upper cone, bushing setting is fixed with shear pin installs slips in described slips cage, the centre position of described slips is provided with spring leaf, and the bottom of described slips is installed with the fixing lower cone of pin, and the lower thread of described lower cone connects packer lower contact, be provided with the solution seal ring fixed with described packer central tube between described lower cone and described packer lower contact, described solution seal ring lower end is provided with the fixing release ring of deblocking pin, the top of described packer central tube is provided with the B petal design of agreeing with mutually with A petal design in described fastening means.
6. integral type oil and gas reservoir protection instrument assembly according to claim 2; it is characterized in that: described running tool top connection, running tool lower contact, running tool piston bush, between piston and described running tool central tube, all with O RunddichtringO realize sealing.
7. integral type oil and gas reservoir protection instrument assembly according to claim 3; it is characterized in that: the force transmission joint in described formation isolation valves and between isolating valve top connection, between power transmission cover and isolating valve overcoat, between power transmission cover and upper sleeve gasket, between isolating valve overcoat and ball seat and isolating valve lower contact and between ball seat and lower sleeve gasket, all adopt O RunddichtringO to realize sealing.
8. integral type oil and gas reservoir protection instrument assembly according to claim 4; it is characterized in that: between described fastening means top connection and axle, between described support ring and axle and between described fastening means lower contact and axle, all realize sealing with O-ring seals.
9. integral type oil and gas reservoir protection instrument assembly according to claim 5; it is characterized in that: the piston bush in described hanging packer, piston, upper rule ring, packing element, lower rule ring and separate between seal ring and described packer central tube, all adopt O RunddichtringO to realize sealing.
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| CN201410784832.7A CN104533335B (en) | 2014-12-16 | 2014-12-16 | Integral type oil and gas reservoir protects instrument assembly |
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| CN201410784832.7A CN104533335B (en) | 2014-12-16 | 2014-12-16 | Integral type oil and gas reservoir protects instrument assembly |
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| CN104533335B CN104533335B (en) | 2017-03-15 |
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| CN107829710A (en) * | 2017-09-12 | 2018-03-23 | 中国海洋石油总公司 | A kind of ring-type valve plate type downhole safety device |
| CN108204220A (en) * | 2017-12-25 | 2018-06-26 | 中海油能源发展股份有限公司 | A kind of deep water formation isolation valves completion tool |
| CN110566153A (en) * | 2019-09-26 | 2019-12-13 | 中海油能源发展股份有限公司工程技术分公司 | reservoir protection device capable of being opened in two directions |
| CN111364956A (en) * | 2020-03-18 | 2020-07-03 | 中国海洋石油集团有限公司 | Sand control injection allocation integrated packer |
| CN111502587A (en) * | 2020-04-15 | 2020-08-07 | 中国海洋石油集团有限公司 | Remotely opened stratum isolation tool for deep well |
| CN114482891A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Friction setting sand prevention pipe column, friction setting packer and method |
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| CN111502587A (en) * | 2020-04-15 | 2020-08-07 | 中国海洋石油集团有限公司 | Remotely opened stratum isolation tool for deep well |
| CN111502587B (en) * | 2020-04-15 | 2021-12-17 | 中国海洋石油集团有限公司 | Remotely opened stratum isolation tool for deep well |
| CN114482891A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Friction setting sand prevention pipe column, friction setting packer and method |
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| CN104533335B (en) | 2017-03-15 |
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Effective date of registration: 20170109 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Applicant after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC Energy Technology Co., Ltd. |
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