CN202731830U - Removable and drillable type packer for oil well - Google Patents
Removable and drillable type packer for oil well Download PDFInfo
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- CN202731830U CN202731830U CN 201220255964 CN201220255964U CN202731830U CN 202731830 U CN202731830 U CN 202731830U CN 201220255964 CN201220255964 CN 201220255964 CN 201220255964 U CN201220255964 U CN 201220255964U CN 202731830 U CN202731830 U CN 202731830U
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Abstract
A removable and drillable type packer for an oil well is applied to the technical field of oil extraction. A locking ring is arranged between a locking ring seat and an upper connector, and locking can be achieved after sealing. Four shear pins are arranged on an adaptive sleeve to prevent the halfway sealing of a packer. A protective copper ring, a cooper ring, a rubber cylinder and a protective rubber cylinder are connected together to perform a function of protecting the rubber cylinder. A step shoulder is arranged on the central pipe to prevent an upper cone body from moving upwards continuously after connected with the upper cone body, and a twist preventing screw is arranged in the thread hole and inserted in a keygroove of the central pipe to prevent a slip bowl from rotating. A support ring is arranged in a throw-salvage claw to prevent branch claws of the throw-salvage claw from contracting inward in a working process, and performs a function of preventing deblocking. The throw-salvage claw is provided with eight branch claws, and can be deblocked after contracting back. The removable and drillable type packer for the oil well has the advantages that hydraulic sealing can be achieved, and an oil sleeve is in communication in a tool pipe pillar laying down process, and therefore the halfway sealing of the packer in the tool pipe pillar laying down process caused by fluid pressure surge or impact of a well cylinder can be avoided.
Description
Technical field
The utility model relates to the oil extraction in oil field technical field, and particularly a kind of special tool of realizing the packing of oil jacket annular space is a kind of desirable drillable packer.
Background technology
At present, packer is the important downhole tool of oil extraction in oil field, is the special tool of realizing the packing of oil jacket annular space, plays the separation formation function, is mainly used in separate zone water shutoff, pressure break, acidifying and gaslift completion construction operation etc.What most of gas-lift completion string was used is mechanical packer.Mechanical packer tube post gravity sets, and near the tubing string that connects in the process of packer setting the packer top connection just can produce serious bending, reduces oil pipe application life, and brings certain difficulty for gas lift valve pulling operation.Although and that hydraulic packer sets is effective, needs the milling deblocking, operation process is complicated, high cost.
The utility model content
The purpose of this utility model is: provide a kind of oil well desirable drillable packer, can realize hydraulic setting, bidirectionally anchoring can hold high pressure, and sealing life is long, and it is reliable to give up, high efficiency, and deblocking is simple and reliable, and solution is honored as a queen and can be reclaimed.And can reduce the flexural deformation of tubing string, overcome existing hold the high pressure drilling pipe bending serious, remove the too high shortcoming of operating cost.
The technical solution adopted in the utility model is: the desirable drillable packer of oil well, by lock ring seat, bolt, nut, top connection, trip bolt, lock ring, cut off, adaptive cover, protection copper ring, protection packing element, copper ring, sealing mat, sealing ring, packing element, adjustment ring, upper cone, anti-ly turn round that screw, slip spider, slips, spring, lower cone, holding screw, central tube, pulling are grabbed, holding screw, inner seal ring, exterior seal ring, shear pin, support ring, lower contact and shear pin form.It is characterized in that: there is a trapezoidal internal thread lock ring seat lower end, and trapezoidal thread upwards has zigzag locking internal thread, and a screwed hole is arranged on the saw-tooth thread, and saw-tooth thread upwards has a circular hole again.The circular hole inserting bolt of lock ring seat, bolts and nuts connect, and the lock ring seat can not produced move axially.The lock ring seat is threaded with lock ring, and there is the zigzag locking screw lock ring outside, inboard, and the side has a groove.Trip bolt screws in from the screwed hole of lock ring seat, is screwed in the groove of lock ring.The trapezoidal internal thread of lock ring seat lower end is connected with the trapezoidal external screw thread of adaptive set upper side, and there is a trapezoidal external screw thread adaptive set upper side, and lower end side has four screwed holes.The top connection internal thread has 12 circular holes downwards, and there is a zigzag locking external screw thread lower end, and there are four counterbores locking external screw thread lower end, and the lower end also has a trapezoidal internal thread, and the trapezoidal internal thread of top connection lower end is connected with the trapezoidal external screw thread of central tube upper end.The screwed hole that cuts off by adaptive cover screws in, and is screwed on the counterbore of top connection, and adaptive cover can not be moved axially.Protection copper ring, protection packing element, copper ring, packing element are fitted and are inserted on the central tube.Sealing mat one end is the plane, and the other end is cambered surface, in the seal groove of the packing element of packing into after sealing mat and the sealing ring combination.The packing element two ends are the inclined-plane, and middle inner surface has a seal groove.The adjustment ring upper end is the plane, and there is trapezoidal internal thread the lower end, and adjustment ring is connected with upper cone.The upper cone upper end has trapezoidal external screw thread, side that two circular holes are arranged, and inner surface has a shoulder, and lower end side has a groove, four countersunk head screwed holes, and the lower end is that the conical surface cooperates with slips.The anti-screw upper end of turning round is interior six sides, and the lower end is external screw thread.The slip spider upper inside surface has a shoulder, and there are six screwed holes, four circular holes, four pairs of rectangular openings, four pairs of slip grooves in the side.Slips two ends external surface respectively has five sawtooth teeth, and there is a groove centre, and rooved face has a counterbore, and the two ends inner surface respectively has an inclined-plane, and middle inner surface is a cambered surface.Spring is the screw conical spring, and the upper end is from vertically upward bending of central point, and the lower end polishes.After upper cone is inserted in central tube, slip spider is nested into upper cone, four slips are packed in the groove of slip spider, again four springs are inserted in four apertures of slip spiders, and put into slip groove, again lower cone is inserted in the slip spider afterwards.Prevent that with four turning round screw is screwed into the screwed hole of upper cone in the groove of slip spider, and be positioned in the groove of central tube.Anti-turn round the screwed hole that screw is screwed into lower cone in the groove of slip spider with four.The lower cone inner surface is through hole, and there is a conical surface external surface upper end, and there are four countersunk head screwed holes the side, two counterbores, and there is a trapezoidal external screw thread lower end, side, four counterbores, a shoulder.Holding screw, side are external screw thread, and the upper surface is interior six sides.The central tube inner surface is through hole, and upper side has a trapezoidal external screw thread, and there is a shoulder middle part, and there are four keyways the shoulder lower end, and lower end side has a trapezoidal external screw thread, and the external screw thread leading portion has a disc and four counterbores.It is trapezoidal internal thread that pulling is grabbed the upper end inboard, and internal thread inwardly has a seal groove, and a shoulder is inwardly arranged again, a groove is arranged afterwards, a shoulder is arranged bottom, and there is chamfering on the shoulder both sides, and there is one section sealing surface in the outside, upper end, the above has two screwed holes, a shoulder is arranged downwards again, an external seal groove is arranged afterwards, there is an external screw thread in the outside bottom, the lower end is divided has eight distinguish to grab, and the above has eight screwed holes.Holding screw, side are external screw thread, and the upper surface is interior six sides.Inner seal ring is annular, and the cross section is circular.Exterior seal ring is annular, and the cross section is circular.Shear pin, side are external screw thread, and the upper end is a groove.The support ring inboard is a disc, and there is chamfering at two ends, and the outside is a shoulder, and there is chamfering at the shoulder two ends, and eight counterbores are arranged on the shoulder.Lower contact upper end inner face is a disc, down is a trapezoidal internal thread, down is one section sealing surface again, is an internal thread afterwards, and then a chamfering is arranged, and is an inner headed face afterwards.There are four screwed holes in the outside, upper end, is a periphery afterwards, and a chamfering is arranged downwards, is one section disc after the chamfering, is an oil tube external thread bottom.The shear pin side is external screw thread, and the upper surface is a groove.Inner seal ring is put in the interior seal groove that pulling grabs, pulling is grabbed on the lower end external screw thread that is screwed into central tube, and holding screw is tightened.Support ring is knocked in distinguish that pulling grabs grabs, and screwed hole aligns with counterbore, will cut surely to screw.Exterior seal ring is put in the external seal groove that pulling grabs, and lower contact is connected with lower cone with being threaded that pulling is grabbed, lower contact, tightens holding screw.
In order to guarantee to be connected with intubate, in the top connection upper end rectangle internal thread is arranged.
Oil well is with the operating principle of desirable drillable packer: the inside slips by setting tool and the rectangle of packer top connection link and connect, pump under the fluid power effect on ground, under certain pressure, cut off the setting tool fastener, the adaptive cover generation relative motion of the adaptive cover of setting tool and packer, then cut off the shear pin of packer, continue the compression packing element, strut slips, realize setting of packer.Can suppress by sleeve pipe after setting and test envelope, test behind the involution lattice and realize giving up by the forward tubing string, also can by on carry and realize giving up.
The beneficial effects of the utility model: the desirable drillable packer of the utility model oil well, can realize hydraulic setting, and transfer in the process oil jacket at tool tubular column and link up, can packer set midway in the lower tubular column process owing to wellbore fluids pressure oscillation or impact cause.Packer packing reasonable in design is reliable, compact conformation, and deblocking and recovery are simple, and the packing life-span is long.
Description of drawings
Fig. 1 is the Y455-115 oil well generalized section that can bore retrievable packer the first half.
Fig. 2 is the Y455-115 oil well generalized section that can bore retrievable packer the latter half.
Among the figure, 1-lock ring seat, 2-bolt, 3-nut; the 4-top connection, the 5-trip bolt, the 6-lock ring, 7-cuts off; the adaptive cover of 8-, 9-protects copper ring, and 10-protects packing element; the 11-copper ring, 12-sealing mat, 13-sealing ring; the 14-packing element, 15-adjustment ring, 16-upper cone; 17-is anti-to turn round screw, 18-slip spider, 19-slips; the 20-spring, 21-lower cone, 22-holding screw; the 23-central tube, the 24-pulling is grabbed, the 25-holding screw; the 26-inner seal ring, 27-exterior seal ring, 28-shear pin; the 29-support ring, 30-lower contact, 31-shear pin.
The specific embodiment
Embodiment 1: take a Y455-115 oil well with desirable drillable packer as example, the utility model is described in further detail.
Consult Fig. 1 and Fig. 2.The desirable drillable packer of the utility model oil well, by lock ring seat 1, bolt 2, nut 3, top connection 4, trip bolt 5, lock ring 6, cut off 7, adaptive cover 8, protection copper ring 9, protection packing element 10, copper ring 11, sealing mat 12, sealing ring 13, packing element 14, adjustment ring 15, upper cone 16, anti-ly turn round that screw 17, slip spider 18, slips 19, spring 20, lower cone 21, holding screw 22, central tube 23, pulling grab 24, holding screw 25, inner seal ring 26, exterior seal ring 27, shear pin 28, support ring 29, lower contact 30 and shear pin 31 form.
The maximum outside diameter 114.3mm of this packer, overall length 1600mm, interior latus rectum 76.2mm.There is the rectangle internal thread top connection 4 upper ends, can be connected G.I.H with the sealing intubate.There is a trapezoidal internal thread lock ring seat 1 lower end, and trapezoidal thread upwards has zigzag locking internal thread, and a screwed hole is arranged on the saw-tooth thread, and saw-tooth thread upwards has a circular hole again.The circular hole inserting bolt 2 of lock ring seat 1, bolt 2 is connected with nut 3, lock ring seat 1 can not produced move axially.Lock ring seat 1 is threaded with lock ring 6, and there is the zigzag locking screw lock ring 6 outsides, inboard, and the side has a groove.Trip bolt 5 screws in from the screwed hole of lock ring seat 1, is screwed in the groove of lock ring 6.The trapezoidal internal thread of lock ring seat 1 lower end is connected with the trapezoidal external screw thread of adaptive cover 8 upper ends, and there is a trapezoidal external screw thread adaptive cover 8 upper ends, and lower end side has four screwed holes.In top connection 4 upper ends the rectangle internal thread is arranged.Top connection 4 internal threads have 12 circular holes downwards, there is a zigzag locking external screw thread lower end, there are four counterbores locking external screw thread lower end, and the lower end also has a trapezoidal internal thread, and the trapezoidal internal thread of top connection 4 lower ends is connected with the trapezoidal external screw thread of central tube 23 upper ends.Cut off 7 screwed holes by adaptive cover 8 and screw in, be screwed on the counterbore of top connection 4, adaptive cover 8 can not be moved axially.Protection copper ring 9, protection packing element 10, copper ring 11, packing element 14 are fitted and are inserted on the central tube 23.Sealing mat 12 1 ends are the plane, and the other end is cambered surface, in the seal groove of the packing element 14 of packing into after sealing mat 12 makes up with sealing ring 12.Packing element 14 two ends are the inclined-plane, and middle inner surface has a seal groove.Adjustment ring 15 upper ends are the plane, and there is trapezoidal internal thread the lower end, and adjustment ring 15 is connected with upper cone 16.There is trapezoidal external screw thread upper cone 16 upper ends, and there are two circular holes the side, and inner surface has a shoulder, and lower end side has a groove, four countersunk head screwed holes, and the lower end is that the conical surface cooperates with slips 19.Prevent that turning round screw 17 upper ends is interior six sides, the lower end is external screw thread.Slip spider 18 upper inside surface have a shoulder, and there are six screwed holes, four circular holes, four pairs of rectangular openings, four pairs of slip grooves in the side.Slips 19 two ends external surfaces respectively have five sawtooth teeth, and there is a groove centre, and rooved face has a counterbore, and the two ends inner surface respectively has an inclined-plane, and middle inner surface is a cambered surface.Spring 20 is the screw conical spring, and the upper end is from vertically upward bending of central point, and the lower end polishes.After upper cone 16 is inserted in central tube 23, slip spider 18 is nested into upper cone 16, four slips 19 are packed in the groove of slip spider 18, again four springs 20 are inserted in four apertures of slip spiders, and put into slip groove, again lower cone 21 is inserted in the slip spider afterwards.Prevent that with four turning round screw 17 is screwed into the screwed hole of upper cone 16 in the groove of slip spider 18, and be positioned in the groove of central tube 23.Anti-turn round the screwed hole that screw 17 is screwed into lower cone 21 in the groove of slip spider 18 with four.Lower cone 21 inner surfaces are through hole, and there is a conical surface external surface upper end, and there are four countersunk head screwed holes the side, two counterbores, and there is a trapezoidal external screw thread lower end, side, four counterbores, a shoulder.Holding screw 22, side are external screw thread, and the upper surface is interior six sides.Central tube 23 inner surfaces are through hole, and upper side has a trapezoidal external screw thread, and there is a shoulder middle part, and there are four keyways the shoulder lower end, and lower end side has a trapezoidal external screw thread, and the external screw thread leading portion has a disc and four counterbores.It is trapezoidal internal thread that pulling is grabbed 24 upper ends inboard, and internal thread inwardly has a seal groove, and a shoulder is inwardly arranged again, a groove is arranged afterwards, a shoulder is arranged bottom, and there is chamfering on the shoulder both sides, and there is one section sealing surface in the outside, upper end, the above has two screwed holes, a shoulder is arranged downwards again, an external seal groove is arranged afterwards, there is an external screw thread in the outside bottom, the lower end is divided has eight distinguish to grab, and the above has eight screwed holes.Holding screw 25, side are external screw thread, and the upper surface is interior six sides.Inner seal ring 26 is annular, and the cross section is circular.Exterior seal ring 27 is annular, and the cross section is circular.Shear pin 28, side are external screw thread, and the upper end is a groove.Support ring 29 inboards are a disc, and there is chamfering at two ends, and the outside is a shoulder, and there is chamfering at the shoulder two ends, and eight counterbores are arranged on the shoulder.Lower contact 30 upper end inner faces are discs, down are trapezoidal internal threads, down are one section sealing surface again, are an internal thread afterwards, and then a chamfering is arranged, and are an inner headed face afterwards.There are four screwed holes in the outside, upper end, is a periphery afterwards, and a chamfering is arranged downwards, is one section disc after the chamfering, is an oil tube external thread bottom.Shear pin 31 sides are external screw thread, and the upper surface is a groove.Inner seal ring 26 is put into pulling grab in 24 the interior seal groove, pulling is grabbed 24 be screwed on the lower end external screw thread of central tube 23, and holding screw 25 is tightened.Support ring 29 is knocked in pulling grab in 24 distinguish grabs, screwed hole aligns with counterbore, will cut fixed 28 and screw.Exterior seal ring 27 is put into pulling and is grabbed in 24 the external seal groove, and 24 be threaded grabbed in lower contact 30 and pulling, and lower contact 30 is connected with lower cone 21, tightens holding screw 22.
When oil well sets with desirable drillable packer, packer is connected with setting tool, again the connected pipes G.I.H.After packer is lowered into the setting position, it is heavy to drop into the steel ball marquis, then oil pipe builds the pressure to 10MPa, setting tool is given 1 one lower thrusts of lock ring seat to 4 one upper pulling forces of top connection, and cut off 7 and cut off this moment, adaptive cover 8 begins to promote packing element 14 compressions, shear pin 31 on the slip spider 18 is also cut off simultaneously, and upper cone 16 promotes slips 19 generations and moves radially, and slips 19 contacts with casing wall and produces grappling.When oil pipe built the pressure to 20MPa, packing element 14 compresses fully separated the oil jacket annular space, and slips 19 also struts anchoring string fully, and packer is finished the process of setting.
Oil well with the fishing tool G.I.H, is inserted in the packer during with desirable drillable packer deblocking.The upper lifting pipe post, after shear pin 28 cut off, support ring 29 moves up, pulling this moment grabs 24 because the effect of upper lifting force makes eight distinguish grab radial contraction, cause whole central tube 23 to move up, packer loses the locking action of retaining mechanism, and packing element 14 is regained, slips 19 is also return, removing seal for packer.
Claims (2)
1. desirable drillable packer of oil well is by lock ring seat (1), bolt (2), nut (3), top connection (4), trip bolt (5), lock ring (6), cut off (7), adaptive cover (8), protection copper ring (9), protection packing element (10), copper ring (11), sealing mat (12), sealing ring (13), packing element (14), adjustment ring (15), upper cone (16), the anti-screw (17) of turning round, slip spider (18), slips (19), spring (20), lower cone (21), holding screw (22), central tube (23), (24) are grabbed in pulling, holding screw (25), inner seal ring (26), exterior seal ring (27), shear pin (28), support ring (29), lower contact (30) and shear pin (31) form; It is characterized in that: there is a trapezoidal internal thread lock ring seat (1) lower end, and trapezoidal thread upwards has zigzag locking internal thread, and a screwed hole is arranged on the saw-tooth thread, and saw-tooth thread upwards has a circular hole again; The circular hole inserting bolt (2) of lock ring seat (1), bolt (2) is connected with nut (3), lock ring seat (1) can not produced move axially; Lock ring seat (1) is threaded with lock ring (6), and there is the zigzag locking screw lock ring (6) outside, inboard, and the side has a groove; Holding screw (4) screws in from the screwed hole of lock ring seat (1), is screwed in the groove of lock ring (6); The trapezoidal internal thread of lock ring seat (1) lower end is connected with the trapezoidal external screw thread of adaptive cover (8) upper end, and there is a trapezoidal external screw thread adaptive cover (8) upper end, and lower end side has four screwed holes; Top connection (4) internal thread has 12 circular holes downwards, there is a zigzag locking external screw thread lower end, there are four counterbores locking external screw thread lower end, the lower end also has a trapezoidal internal thread, and the trapezoidal internal thread of top connection (4) lower end is connected with the trapezoidal external screw thread of central tube (23) upper end; Cut off (7) by the screwed hole screw-in of adaptive cover (8), be screwed on the counterbore of top connection (4); Protection copper ring (9), protection packing element (10), copper ring (11), packing element (14) are fitted and are inserted on the central tube (23); Sealing mat (12) one ends are the plane, and the other end is cambered surface, in the seal groove of packing element (14) of packing into after sealing mat (12) makes up with sealing ring (12); Packing element (14) two ends are the inclined-plane, and middle inner surface has a seal groove; Adjustment ring (15) upper end is the plane, and there is trapezoidal internal thread the lower end, and adjustment ring (15) is connected with upper cone (16); Upper cone (16) upper end has trapezoidal external screw thread, side that two circular holes are arranged, and inner surface has a shoulder, and lower end side has a groove, four countersunk head screwed holes, and the lower end is that the conical surface cooperates with slips (19); Anti-screw (17) upper end of turning round is interior six sides, and the lower end is external screw thread; Slip spider (18) upper inside surface has a shoulder, and there are six screwed holes, four circular holes, four pairs of rectangular openings, four pairs of slip grooves in the side; Slips (19) two ends external surface respectively has five sawtooth teeth, and there is a groove centre, and rooved face has a counterbore, and the two ends inner surface respectively has an inclined-plane, and middle inner surface is a cambered surface; Spring (20) is the screw conical spring, and the upper end is from vertically upward bending of central point, and the lower end polishes; After upper cone (16) is inserted in central tube (23), slip spider (18) is nested into upper cone (16), four slips (19) are packed in the groove of slip spider (18), again four springs (20) are inserted in four apertures of slip spider, and put into slip groove, again lower cone (21) is inserted in the slip spider afterwards; Prevent that with four turning round screw (17) is screwed into the screwed hole of upper cone (16) in the groove of slip spider (18), and be positioned in the groove of central tube (23); Anti-turn round the screwed hole that screw (17) is screwed into lower cone (21) in the groove of slip spider (18) with four; Lower cone (21) inner surface is through hole, and there is a conical surface external surface upper end, and there are four countersunk head screwed holes the side, two counterbores, and there is a trapezoidal external screw thread lower end, side, four counterbores, a shoulder; Holding screw (22), side are external screw thread, and the upper surface is interior six sides; Central tube (23) inner surface is through hole, and upper side has a trapezoidal external screw thread, and there is a shoulder middle part, and there are four keyways the shoulder lower end, and lower end side has a trapezoidal external screw thread, and the external screw thread leading portion has a disc and four counterbores; It is trapezoidal internal thread that pulling is grabbed (24) upper end inboard, and internal thread inwardly has a seal groove, and a shoulder is inwardly arranged again, a groove is arranged afterwards, a shoulder is arranged bottom, and there is chamfering on the shoulder both sides, and there is one section sealing surface in the outside, upper end, the above has two screwed holes, a shoulder is arranged downwards again, an external seal groove is arranged afterwards, there is an external screw thread in the outside bottom, the lower end is divided has eight distinguish to grab, and the above has eight screwed holes; Holding screw (25), side are external screw thread, and the upper surface is interior six sides; Inner seal ring (26) is annular, and the cross section is circular; Exterior seal ring (27) is annular, and the cross section is circular; Shear pin (28), side are external screw thread, and the upper end is a groove; Support ring (29) inboard is a disc, and there is chamfering at two ends, and the outside is a shoulder, and there is chamfering at the shoulder two ends, and eight counterbores are arranged on the shoulder; Lower contact (30) upper end inner face is a disc, down is a trapezoidal internal thread, down is one section sealing surface again, is an internal thread afterwards, and then a chamfering is arranged, and is an inner headed face afterwards; There are four screwed holes in the outside, upper end, is a periphery afterwards, and a chamfering is arranged downwards, is one section disc after the chamfering, is an oil tube external thread bottom; Shear pin (31) side is external screw thread, and the upper surface is a groove; Inner seal ring (26) is put into pulling grab in the interior seal groove of (24), pulling is grabbed (24) and be screwed on the lower end external screw thread of central tube (23), and holding screw (25) is tightened; Support ring (29) is knocked in pulling and is grabbed in the distinguish of (24) grabs, and screwed hole aligns with counterbore, will cut fixed (28) and screw; Exterior seal ring (27) is put into pulling and is grabbed in the external seal groove of (24), and being threaded of (24) grabbed in lower contact (30) with pulling, and lower contact (30) is connected with lower cone (21), tightens holding screw (22).
2. desirable drillable packer according to claim 1 is characterized in that: in top connection (4) upper end the rectangle internal thread is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255964 CN202731830U (en) | 2012-06-01 | 2012-06-01 | Removable and drillable type packer for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255964 CN202731830U (en) | 2012-06-01 | 2012-06-01 | Removable and drillable type packer for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731830U true CN202731830U (en) | 2013-02-13 |
Family
ID=47657542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220255964 Expired - Fee Related CN202731830U (en) | 2012-06-01 | 2012-06-01 | Removable and drillable type packer for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731830U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206188A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Isolation packer |
| CN104213868A (en) * | 2014-08-22 | 2014-12-17 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Desirable and drillable anchor packer |
| CN105909206A (en) * | 2016-06-23 | 2016-08-31 | 宝鸡市元亨石油设备有限责任公司 | Closed compressed rubber sleeve sealing unit |
-
2012
- 2012-06-01 CN CN 201220255964 patent/CN202731830U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206188A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Isolation packer |
| CN103206188B (en) * | 2013-04-22 | 2015-09-23 | 中国海洋石油总公司 | isolation packer |
| CN104213868A (en) * | 2014-08-22 | 2014-12-17 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Desirable and drillable anchor packer |
| CN105909206A (en) * | 2016-06-23 | 2016-08-31 | 宝鸡市元亨石油设备有限责任公司 | Closed compressed rubber sleeve sealing unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210601 |
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| CF01 | Termination of patent right due to non-payment of annual fee |