CN2533256Y - Suspended packer - Google Patents
Suspended packer Download PDFInfo
- Publication number
- CN2533256Y CN2533256Y CN 02212932 CN02212932U CN2533256Y CN 2533256 Y CN2533256 Y CN 2533256Y CN 02212932 CN02212932 CN 02212932 CN 02212932 U CN02212932 U CN 02212932U CN 2533256 Y CN2533256 Y CN 2533256Y
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- Prior art keywords
- lock
- ring
- packer
- central tube
- shear pin
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Abstract
The utility model discloses a hanging back-off packer, which belongs to the field of the oil-gas well layered technology. The hanging back-off packer is composed of an upper joint, a locking assembly,The utility model discloses a hanging releasing insulation divider in the delaminating technique of oil and gas wells. The utility model includes an upper joint, a locking assembly, a sealing assembly a sealing assembly, an anchoring assembly and a lower joint, wherein, the locking assembly comprises a locking mechanism, a sealing mechanism, an unsealing mechanism and a back-off mechanism. One tim, an anchor assembly and a lower joint; wherein, the locking assembly includes a locking device, a seat sealing device, a sealing unlocking device and a releasing device. The construction is finished e construction is completed by adopting the synchronous conduct of the hydraulic seal, the bidirectional slip anchor and the back-off operation, the salvage is conducted by using a conventional salvagby carrying out hydraulic sealing, dual blocking anchoring and releasing at the same time. And the methods of picking up with a traditional picking device and sealing of a lifting pole are cancelled. ing tool, and the unsealing method is conducted by lifting a pipe column. The utility model solves the problem that the present existing device has single function, and further enhances the efficiencyThe utility model solves the problem of single function of the prior device and increased the efficiency of construction work. of the construction operation.
Description
One, technical field: the utility model belongs to the instrument of oil gas well hierarchical process, is a kind of suspension back-off packer.
Two, background technology: the ZL.93202573.0 patent disclosure a kind of packer, form by top connection, dummy piston, deblocking extension, exterior central tube, slips, lock dog, spacer ring, packing element joint ring, lock tube, seat envelope piston, lower contact, rely on hydraulic pressure transfer, finish setting, lock, sealing action, on carry the oil pipe deblocking.Than traditional 756-6 type, 251 type packers bigger improvement has been arranged, but also had following problem: the one, upper and lower joint is respectively equipped with piston chamber; The 2nd, packer does not have the grappling effect; The 3rd, problem such as packer needs to seal in operation process, the substep combination of hanging, give up could be used.
Three, summary of the invention: the purpose of this utility model is the problem at the existing equipment function singleness, effectively combines with last lower contact locking, sealing, grappling are total, provides a kind of and possesses sealing, the function that hangs, gives up is in the suspension back-off packer of one.
The technical scheme of taking for achieving the above object is: hang back-off packer, be made up of top connection, locking assembly, seal assembly, grappling assembly, lower contact.The locking assembly comprises retaining mechanism, seat sealing mechanism, separates sealing mechanism and four parts of releasing gadget, wherein retaining mechanism is made up of central tube, lock ring, mobile pressure ring, lock ring sheath, lock ring is positioned at lock ring sheath and mobile pressure ring connection of thread, and lock ring is processed with internal thread and open slot and central tube upper external thread and is designed to single face zigzag step lock; The seat sealing mechanism is made up of mobile pressure ring, seat envelope shear pin, lock ring, lock ring sheath, and seat envelope shear pin is positioned at mobile pressure ring bottom, and lock ring sheath bottom and packing element join; Separate sealing mechanism and be made up of fishing joint, deblocking shear pin, central tube, lock ring, fishing joint and is wanted to cooperate with central tube top concave, convex groove between central tube and lock ring, and the bottom is provided with boss and deblocking shear pin hole; Form releasing gadget by lock pawl, the shear pin of giving up, ball seat sliding sleeve and Supporting ring, the shear pin of giving up is positioned at lock pawl and lock ring sheath connecting part, lock pawl Lower Half threading and open slot and central tube internal thread be chain mutually, and lock pawl lower inner surface is equipped with a seat envelope and a Supporting ring, forms support in the lock pawl.
This technical scheme also comprises: 1, the lock pawl top of packer evenly is provided with 3 above circular holes, circular hole is positioned at the plunger shaft top, the lower diameter of lock pawl is greater than upper diameter and flexible, be provided with 3-6 the shear pin hole of giving up in the junction, top and the bottom, a bottom uniform 4-8 open slot of lock pawl, and tooth embedding threads engaged in inclined-plane in outer inclined-plane tooth embedding screw thread and the central tube is arranged; 2 lock rings that hang back-off packers have elasticity, and its inner surface edge is the inclined-plane and matches with the boss inclined-plane of fishing joint bottom; 3, the ball seat sliding sleeve middle part that hangs back-off packer is provided with the shear pin of giving up in the middle part of open slot and the lock pawl and matches, and the bottom is provided with concave station and matches with the Supporting ring boss, and top is provided with seal groove, and top inner surface is the conical cavity body; The 4 central tube outer surface of upper that hang back-off packer are processed as two groups of cylinders that concave, convex is alternate, in its concave surface and the fishing joint, the cell body of bottom matches, its convex surface links to each other with lock ring inner surface stepping tooth embedding screw thread, upper inside surface links to each other with the embedding of lock pawl lower external face tooth, and the central tube middle and lower part is passed sleeve, upper cone, slips, lower cone successively; 5, the grappling assembly that hangs back-off packer is made up of upper cone, slips, slips housing, spring leaf, lower cone, and the upper/lower cone and the slips conical surface join, and the slips outside is provided with the groove that matches with spring leaf, by spring leaf supporting slip housing; 6, the lower contact upper external thread that hangs back-off packer is connected by left hand thread with the lower cone internal thread, and the lower contact upper inside surface has the petroleum oil internal thread, and the petroleum oil external screw thread is arranged at the bottom; 7, the lower cone internal thread of suspension back-off packer is connected with the central tube external screw thread, and lower external face is threaded with guide ring, and by locking pinning locking.
Because the utility model has adopted above technical scheme, solved the problem that the disclosed a kind of packer of traditional 756-6 type packer and ZL93257073.0 exists, obtained beneficial effect, transmission mechanism is independently finished by a piston that is positioned at top connection; The packer bottom is provided with the grappling assembly, packer can be anchored on the optional position; The function that possess sealing simultaneously in the construction operation, hangs, gives up has bidirectional bearing ability height, and grappling is accurate, seat envelope, the safe and reliable characteristics of deblocking.
Four, description of drawings:
Fig. 1 is a kind of overall structure schematic diagram of this utility model;
Fig. 2 is a kind of structural representation of this utility model lock pawl;
Fig. 3 is the A-A sectional view of this utility model lock pawl;
Fig. 4 is a kind of structural representation of this utility model lock ring;
Fig. 5 is the radially schematic diagram of this utility model lock ring;
Fig. 6 is a kind of structural representation of this utility model ball seat sliding sleeve;
Fig. 7 is a kind of structural representation of this utility model central tube;
Fig. 8 is the B-B sectional view of this utility model central tube;
Fig. 9 is a kind of structural representation of this utility model fishing joint;
Figure 10 is the C-C sectional view of this utility model fishing joint;
Figure 11 is a kind of structural representation of this utility model lower cone;
Figure 12 is the structural representation of this utility model lower contact.
The drawing explanation: the 1st, top connection, the 2nd, sealing ring, the 3rd, lock pawl, the 4th, piston, the 5th, ball seat sliding sleeve, the 6th, the shear pin of giving up, the 7th, Supporting ring, the 8th, mobile pressure ring, the 9th, fishing joint, the 10th, an envelope shear pin, the 11st, lock ring, the 12nd, central tube, the 13rd, lock ring sheath, the 14th, deblocking shear pin, the 15th, sleeve, the 16th, packing element, the 17th, spacer ring, the 18th, locating ring, the 19th, upper cone, the 20th, joint ring, the 21st, slips housing, the 22nd, slips, the 23rd, spring leaf, the 24th, lower cone, the 25th, pressure cap, the 26th, guide ring, the 27th, check pin, the 28th, lower contact.
Five, the specific embodiment:
Below in conjunction with the drawings and specific embodiments this utility model is described in detail.
This hangs back-off packer is made up of top connection 1, locking assembly, seal assembly, grappling assembly and lower contact 28, wherein locks assembly and comprises retaining mechanism, seat sealing mechanism, separates sealing mechanism, four parts of releasing gadget.Top connection 1 internal thread joins with lock pawl 3 upper external thread, and forms an annular piston chamber.Lock pawl 3 is being provided with 3 above through holes with junction, piston chamber top, hydraulic oil enters piston chamber by oil pipe by through hole, lock pawl 3 inner chambers are equipped with ball seat sliding sleeve 5, the middle part is provided with 3-6 the shear pin hole of giving up, the shear pin 6 of giving up is imbedded in give up the shear pin hole and the ball seat sliding sleeve 5 of lock pawl 3, the bottom of lock pawl 3 is the elastic groove pawl, and groove pawl bottom is supported lock pawl 3 by Supporting ring 7 and joined with central tube 12.Ball seat sheath 5 tops are the taper ball seat, are used for placing spheroid (figure does not draw), and cylindrical is provided with seal groove, and sealing ring 2 is installed, and lower recess matches with Supporting ring 7.Mobile pressure ring 8 tops and piston 4 join, piston 4 inside and outside circles are respectively equipped with 1 or 2 seal groove, sealing ring 2 is installed, mobile pressure ring 8 lower external thread and lock ring sheath 13 internal threads join, the centre clamps lock ring 11, be provided with 3-6 seat envelope shear pin hole at connection of thread, an envelope shear pin hole is imbedded in seat envelope shear pin 10 bottoms, and the fishing joint 9 between mobile pressure ring 8 and central tube 12 is imbedded on top.Seal groove is established on fishing joint 9 tops, and sealing ring 2 is installed, and the bottom is provided with 3-6 deblocking shear pin hole, and lower curtate and sleeve 15 join.Deblocking shear pin 14 is imbedded deblocking shear pin hole and central tube 12.It is fixed that central tube 12 outer surface of upper tongue tooth embedding external screw threads and lock ring 11 tooth embedding internal threads are formed the meshing seat blockade of stepping, groove matches with the groove pawl of fishing joint 9, inner surface joins with lock pawl 3 lower external face screw threads, in, the bottom passes sleeve 15, upper cone 19, slips 22 and lower cone 24 successively and joins.More than each parts interconnect, interact, formed seat an envelope, locking, deblocking, releasing gadget.Lock ring sheath 13 bottoms and packing element 16, spacer ring 17, packing element 16, locating ring 18 join successively, form seal assembly.Upper cone 19 tops join with locating ring 18 and joint ring 20 respectively, the bottom conical surface matches with slips 22 conical surfaces, slips 22 another conical surfaces match with the last conical surface of lower cone 24, slips housing 21 joins with pressure cap 25, upper cone 19, lower cone 24 outer lug boss, by supporting in the 4-8 flat spring sheet 23 that is distributed between slips 22 and the slips housing 21, form the grappling assembly.Lower cone 24 lower internal thread and left-handed connection of lower contact 28 external screw threads, cylindrical is fixed by locking pinning 27 by guide ring 26.Lower contact 28 upper inside surface and lower external face are respectively equipped with outside the petroleum oil, internal thread.
The utility model course of work is: hang back-off packer along sleeve pipe down to design attitude, put into a spheroid from the central tube post, press oil to center tubing string liquid feeding, spheroid shutoff ball seat sliding sleeve 5, hydraulic pressure enters plunger shaft by the through hole of lock pawl 3, act on the piston 3, promote mobile pressure ring 8 behind piston 3 pressurizeds, mobile pressure ring 8 relative fishing joints 9 move down, seat envelope shear pin 10 is cut off, promote lock ring 11, lock ring sheath 13, sleeve 15, packing element 16, spacer ring 17, locating ring 18, upper cone 19 integral body move down, and slips housing 21 is outwards risen by upper cone active force footpath, finishes the grappling of slips housing 21 and sleeve pipe.Continue pressurization, packing element 16 is compressed, and the annular space of packing oil pipe and sleeve pipe is realized sealing.When pressure reached certain value, ball seat sliding sleeve 5 was subjected to the upward pressure effect to lock pawl 3 relatively to move down, and the shear pin 6 of giving up is cut off, the support rim release lock pawl 3 of Supporting ring 7, lock pawl 3 loses support, by self elastic force effect, inwardly shrink, lock pawl 3 breaks away from the screw thread of central tube 12, promptly realizes giving up.
When tripping out packer and hanging the tubing string deblocking as need, be lowered to fishing tool and drag for fishing joint 9, the upper lifting pipe post moves on the fishing joint 9 relative central tubes 12, and deblocking shear pin 18 is cut off.When moving in the fishing joint 9, the boss of fishing joint 9 heads into lock ring 11 internal diameters, and lock ring 11 breaks away from central tube 12 tooth embedding screw threads, realizes deblocking.Continue the upper lifting pipe post, the mobile pressure ring 8 of fishing joint 9 drives, lock ring sheath 13, sleeve 15 move up.Packing element 16 loses compressive force, restores to the original state voluntarily; Upper cone 19 is up, and slips 22 loses support and bounces back under spring leaf 23 effects, breaks away from internal surface of sleeve pipe, and the complete deblocking of packer can trip out smoothly.
Claims (8)
1, a kind of suspension back-off packer, form by top connection, locking assembly, seal assembly, holdfast assembly, lower contact, it is characterized in that: the locking assembly comprises retaining mechanism, seat sealing mechanism, separates sealing mechanism and four parts of releasing gadget, wherein retaining mechanism is made up of central tube, lock ring, mobile pressure ring, lock ring sheath, lock ring is positioned at lock ring sheath and mobile pressure ring connection of thread, and lock ring is processed with internal thread and open slot and central tube upper external thread and is designed to single face zigzag step lock; The seat sealing mechanism is made up of mobile pressure ring, seat envelope shear pin, lock ring, lock ring sheath, and seat envelope shear pin is positioned at mobile pressure ring bottom, and lock ring sheath bottom and packing element join; Separate sealing mechanism and be made up of fishing joint, deblocking shear pin, central tube, lock ring, fishing joint and is wanted to cooperate with central tube top concave, convex groove between central tube and lock ring, and the bottom is provided with boss and deblocking shear pin hole; Form releasing gadget by lock pawl, the shear pin of giving up, ball seat sliding sleeve and Supporting ring, the shear pin of giving up is positioned at lock pawl and lock ring sheath connecting part, lock pawl Lower Half threading and open slot and central tube internal thread be chain mutually, and lock pawl lower inner surface is equipped with a seat envelope and a Supporting ring, forms support in the lock pawl.
2, according to the suspension back-off packer of claim 1, it is characterized in that locking pawl top and evenly be provided with 3 above circular holes, circular hole is positioned at the plunger shaft top, the lower diameter of lock pawl is flexible greater than upper diameter, be provided with 2-6 the shear pin hole of giving up in the junction, top and the bottom, a bottom uniform 4-8 open slot of lock pawl, and tooth embedding threads engaged in inclined-plane in outer inclined-plane tooth embedding screw thread and the central tube is arranged.
3, according to the suspension back-off packer of claim 1, it is characterized in that lock ring has elasticity, its inner surface edge is the inclined-plane and matches with the boss inclined-plane of fishing joint bottom.
4, according to the suspension back-off packer of claim 1, it is characterized in that ball seat sliding sleeve middle part is provided with the shear pin of giving up in the middle part of open slot and the lock pawl and matches, the bottom is provided with concave station and matches with the Supporting ring boss, and top is provided with seal groove, and top inner surface is the conical cavity body.
5, according to the suspension back-off packer of claim 1, it is characterized in that the central tube outer surface of upper is processed as two groups of cylinders that concave, convex is alternate, in its concave surface and the fishing joint, the cell body of bottom matches, its convex surface links to each other with lock ring inner surface stepping tooth embedding screw thread, upper inside surface links to each other with the embedding of lock pawl lower external face tooth, and the central tube middle and lower part is passed sleeve, upper cone, slips, lower cone successively.
6, according to the suspension back-off packer of claim 1, it is characterized in that the grappling assembly is made up of upper cone, slips, slips housing, spring leaf, lower cone, the upper/lower cone and the slips conical surface join, and the slips outside is provided with the groove that matches with spring leaf, by spring leaf supporting slip housing.
7, according to the suspension back-off packer of claim 1 or 6, it is characterized in that the lower contact upper external thread is connected by left hand thread with the lower cone internal thread, and the lower contact upper inside surface there is the petroleum oil internal thread, the petroleum oil external screw thread is arranged at the bottom.
8, according to the suspension back-off packer of claim 1, it is characterized in that the lower cone internal thread is connected with the central tube external screw thread, lower external face is threaded with guide ring, and by locking pinning locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212932 CN2533256Y (en) | 2002-02-20 | 2002-02-20 | Suspended packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212932 CN2533256Y (en) | 2002-02-20 | 2002-02-20 | Suspended packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2533256Y true CN2533256Y (en) | 2003-01-29 |
Family
ID=33692530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02212932 Expired - Fee Related CN2533256Y (en) | 2002-02-20 | 2002-02-20 | Suspended packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2533256Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382052B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Back-off packer |
| CN101382053B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Oil well packer |
| CN102797429A (en) * | 2012-08-17 | 2012-11-28 | 中国海洋石油总公司 | Suspending releasing sand preventing completion packer |
| CN102966339A (en) * | 2012-12-09 | 2013-03-13 | 李运柱 | Insertion pipe type release separate-layer water injection string and operation process thereof |
| CN104329046B (en) * | 2014-10-22 | 2017-02-15 | 新疆华油油气工程有限公司 | Rotary hydraulic packer |
| CN107989570A (en) * | 2018-01-09 | 2018-05-04 | 高云东 | A kind of sump packer |
| CN108278094A (en) * | 2017-01-05 | 2018-07-13 | 中国石油化工股份有限公司 | Cementing plugging device |
-
2002
- 2002-02-20 CN CN 02212932 patent/CN2533256Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382052B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Back-off packer |
| CN101382053B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Oil well packer |
| CN102797429A (en) * | 2012-08-17 | 2012-11-28 | 中国海洋石油总公司 | Suspending releasing sand preventing completion packer |
| CN102966339A (en) * | 2012-12-09 | 2013-03-13 | 李运柱 | Insertion pipe type release separate-layer water injection string and operation process thereof |
| CN102966339B (en) * | 2012-12-09 | 2015-02-04 | 李运柱 | Insertion pipe type release separate-layer water injection string and operation process thereof |
| CN104329046B (en) * | 2014-10-22 | 2017-02-15 | 新疆华油油气工程有限公司 | Rotary hydraulic packer |
| CN108278094A (en) * | 2017-01-05 | 2018-07-13 | 中国石油化工股份有限公司 | Cementing plugging device |
| CN108278094B (en) * | 2017-01-05 | 2020-03-10 | 中国石油化工股份有限公司 | Cementing plugging device |
| CN107989570A (en) * | 2018-01-09 | 2018-05-04 | 高云东 | A kind of sump packer |
| CN107989570B (en) * | 2018-01-09 | 2024-04-12 | 东营市昌瑞石油机械配件有限责任公司 | Sand setting packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |