CN103899272B - A kind of hanging packer - Google Patents
A kind of hanging packer Download PDFInfo
- Publication number
- CN103899272B CN103899272B CN201210586757.4A CN201210586757A CN103899272B CN 103899272 B CN103899272 B CN 103899272B CN 201210586757 A CN201210586757 A CN 201210586757A CN 103899272 B CN103899272 B CN 103899272B
- Authority
- CN
- China
- Prior art keywords
- slips
- casing
- groove
- slip
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of hanging packer, including two block insert type casing slips, a described block insert type casing slip is arranged between the second cone and the second piston, and another described block insert type casing slip is arranged between the first cone and first piston；Described block insert type casing slip, including small casing slips and big casing slip, described big casing slip fixed sleeves is provided with at least one described small casing slips.The degree of depth that the hanging packer of the present invention can be engaged with casing wall is deeper, uses the structure of the present invention can be greatly improved the reliability that hanging packer uses simultaneously, thus improves acid fracturing volume increase construction reliability, greatly reduces construction risk.
Description
Technical field
The present invention relates to field of petroleum exploitation, particularly to a kind of hanging packer.
Background technology
In order to improve oil, gas recovery ratio, oil field at home increasingly values the drilling mode of horizontal well, and at water
In the completion mode of horizontal well, a lot of wells selection level well subsection acidizing pressure break barefoot completion mode again, implementing
In acid fracturing volume increase work progress, hanging packer requires to bear high pressure and stable can be anchored on set
Guan Shang, and slips is the key components and parts realizing bearing high pressure and anchor sleeve on hanging packer.Slips
Needing to rupture under the promotion, extruding of piston, now the piston device that is locked is fixed, thus realizes hanging envelope
It is anchored on sleeve pipe every device.In pressing crack construction process, tubing string can ceaselessly shake, so slips requires to have concurrently
The feature that frangible, hardness is high and wear-resisting.
Traditional slips is the ironcasting of integral type or split-type, and this ironcasting hardness after heat treatment is close
The hardness of casing wall.Configure two traditional slips on existing hanging packer, be lowered into design position at instrument
Postpone, by suppressing in pipe, force piston to move after cutting off pin, realize cast iron slips by extruding and rupture,
Until piston be locked device fixing after, i.e. realize the task that hanging packer is anchored on sleeve pipe.
Owing to the hardness of traditional cast iron slips finished product is close with the hardness of sleeve pipe, have the disadvantage in that
1, the depth as shallow that traditional cast iron slips is engaged with casing wall, affects the jail of hanging packer anchor sleeve
Solidity；
2, the hardness of tradition slips is close with the hardness of sleeve pipe, and the wearability causing slips is bad, and in acidifying
In fracturing yield increasing construction, tubing string is in the state of vibrations, is so easy to wear and tear slips, causes grappling to be lost efficacy,
Thus reduce construction reliability.
Summary of the invention
The purpose of the embodiment of the present invention is the defect for above-mentioned prior art, it is provided that a kind of slips wearability is good,
The firm hanging packer of anchor sleeve.
The present invention adopts the technical scheme that to achieve these goals:
A kind of hanging packer, including two block insert type casing slips, a described block insert type casing slip peace
Be contained between the second cone and the second piston, another described block insert type casing slip be arranged on the first cone and
Between first piston；
Described block insert type casing slip includes small casing slips and big casing slip, solid outside described big casing slip
Surely at least one described small casing slips it is arranged with.
The material of described big casing slip is cast iron, and the material of described small casing slips is bearing steel.
Described big casing slip includes that shell, described shell are provided with sawtooth button and at least one groove, Mei Gesuo
State groove and be provided with through hole;Described shell is provided with at least one shear pin nail, is used for installing shear pin,
Big casing slip is made to be fixed on hanging packer；Described small casing slips includes body, described body upper surface
Being provided with sawtooth button, described body lower surface connects has barb, each described groove to be embedded in a described body,
Described barb snaps in the through hole of described groove.
The body upper surface of described small casing slips is positioned at the outside of described groove.
Described groove is rectangle, and the body of the described small casing slips being correspondingly embedded in is rectangle.
Described groove is 6, and each two groove is adjacent, and is a pair, is provided with gap between every pair of groove,
The shell in described gap is provided with shear pin nail, and 3 pairs of grooves are evenly distributed in the surrounding of described shell, described
Small casing slips is 6.
Described shell is provided with at least one and carefully stitches.
Described shell is provided with U-shaped groove.
Described shell upper is provided with 9 thin seams, and the shell of described thin seam bottom is provided with U-shaped groove.
Described big casing slip is fixed together by counterbore screw with described small casing slips.
The technical scheme that the embodiment of the present invention provides has the benefit that
Block insert type casing slip in hanging packer of the present invention is with cast iron slips as matrix, and inlays in the base
Entering material is Gr15(bearing steel) small casing slips, Bearing Steel is higher, contacting fatigue resistance more
Good, therefore in acid fracturing volume increase construction, it also is able to ensure that slips has well in the case of tubing string vibrations
Wearability, the degree of depth that block insert type casing slip can be engaged with casing wall is deeper, be greatly improved suspension packing
The reliability that device uses, thus improve acid fracturing volume increase construction reliability, greatly reduce construction risk.
Accompanying drawing explanation
Fig. 1 is the structure semi-cutaway of a kind of hanging packer of invention；
Fig. 2 is the structural representation of the another kind of hanging packer that the present invention provides；
Fig. 3 is the structural representation of the block insert type casing slip that the present invention provides；
Fig. 4 is the side view of Fig. 3；
Fig. 5 is the top view of Fig. 3；
Fig. 6 is the structural representation of the big casing slip that the present invention provides；
Fig. 7 is the side view of Fig. 6；
Fig. 8 is the structural representation of the small casing slips that the present invention provides；
Fig. 9 is the side view of Fig. 8；
Figure 10 is the top view of Fig. 8.
In Fig. 2-10:
1 big casing slip, 10 shells, 11 first sawtooth buttons, 12 grooves, 13 through holes, 14 carefully stitch, 15U
Connected in star, 16 first screw holes, 17 shear pin nail；
2 small casing slips, 20 bodies, 21 second sawtooth buttons, 22 barbs, 23 second screw holes；
3 counterbore screws；
4 block insert type casing slips；
5 shear pins；
6 second cones；
7 second pistons；
8 first cones；
9 first pistons.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment is described in further detail.
Embodiment 1
Fig. 1 is the structure semi-cutaway of the two-way setting hanging packer of invention.As it is shown in figure 1, it is two-way setting
Hanging packer, including central canal 2, one end of central canal 2 connects the first joint 1, and the other end connects second
Joint 20, on central canal 2 from the first joint 1 to the second joint 20 be cased with successively the first locating snap ring 21,
One piston the 4, first slips the 7, first cone the 9, first packing element pressure ring 10, packing element the 12, second packing element pressure ring
14, the second cone the 15, second slips the 22, second piston 16 and the second locating snap ring 18, wherein first piston
The outside of 4 is cased with the first hydraulic cylinder 3, and one end of the first hydraulic cylinder 3 is tightly connected with the first joint 1, and first
Hydraulic cylinder 3 is by the first locating snap ring 21 and central canal 2 axial restraint, first piston 4 and the first hydraulic cylinder 3
And between central canal 2, slipper seal connects, and is provided with the first shear pin 6 between first piston 4 and central canal 2,
The inner surface of first piston 4 has dentation slip insert, central canal 2 is fixed with prevention first and lives 4 plugs to the
The first locking slips 5 that one joint 1 moves, is fixed by pin 8 between the first slips 7 and the first cone 9,
Being provided with support ring 13 between central canal 2 and packing element 12, support ring 13 is positioned in the middle part of packing element 12, the first packing element
Pressure ring 10 and the second packing element pressure ring 14 entangle the two ends of packing element 12 respectively, and the outside of the second piston 16 is cased with
Second hydraulic cylinder 19, one end of the second hydraulic cylinder 19 is tightly connected with the second joint 20, the second hydraulic cylinder 19
By the second locating snap ring 18 and central canal 2 axial restraint, the second piston 16 and the second hydraulic cylinder 20 and center
Between pipe 2, slipper seal connects, between the second piston 16 and central canal 2 by the second shear pin 23 even
Connecing, the inner surface of the second piston 16 has dentation slip insert, and central canal 2 is fixed with prevention the second piston 16
The the second locking slips 17 moved to the second joint 20, central canal 2 has the first pressure transmission hole 24 radially
With the second pressure transmission hole 25, the first pressure transmission hole 24 between the first locating snap ring 21 and first piston 4, second
Pressure transmission hole 25 is between the second locating snap ring 18 and the second piston 16.The packer of the present invention uses O shape close
Seal 27 seals, as between the first joint and the first hydraulic cylinder, first piston and the first hydraulic cylinder and in
Between heart pipe, between the second joint and the second hydraulic cylinder, between the second piston and the second hydraulic cylinder and central canal
All seal by arranging O-ring seals 27.Concrete set-up mode see Fig. 1.The two of central canal 2
End be respectively provided with stopping step (see in figure with the first stop 21 ring and the second locating snap ring 18 contact site), respectively
The first locating snap ring 21 and the second locating snap ring 18 is stoped to move in the middle part of central canal.The conical surface of the second cone 15 is stretched
Entering in the second slips 22, the conical surface of the first cone 9 stretches in the first slips 7.Realize two slips to rupture,
Reliably and effectively it is anchored on sleeve pipe.The inner surface of the second cone 15 has dentation slip insert, on central canal 2
It is fixed with the 3rd locking slips 26 stoping the second cone 15 to move to the second joint 20.The two ends of packing element 12
It is cased with soft metal ring 11 respectively.Ensure that the first packing element pressure ring 10 and the second packing element pressure ring 14 can stably be pressed
Live the two ends of packing element 12.First joint 1 is female joint, and the second joint 20 is male joint.Central canal 2 with
It is threaded between first joint 1 and the second joint 20.
The preparation method of above-mentioned packer, comprises the steps:
A. required parts are got out；
B. support ring is loaded in packing element, then the first packing element pressure ring and the second packing element pressure ring are respectively fitted over packing element
Two ends, then above-mentioned assembly set is installed to the middle part of central canal；
C. the first cone, the second cone, and the first slips and the second card it is inserted in respectively from the two ends of central canal
Watt, the conical surface of the first cone is entangled to the first slips, the second slips entangles the conical surface of the second cone；
D. the first locking slips and the second locking slips it are respectively charged in the corresponding groove on central canal, so
After be inserted in first piston and the second piston respectively at the two ends of central canal；
E. the first locating snap ring is assembled in the groove in the first hydraulic cylinder, then the first hydraulic cylinder is inserted in
One piston, reaches till stopping step is stuck until the first locating snap ring；Equally, the second locating snap ring is assembled to
In groove in second hydraulic cylinder, then the second hydraulic cylinder is inserted in the second piston, until the second locating snap ring reaches
Till stopping step is stuck；
F. the first joint and the second joint are connected respectively to the two ends of central canal by screw thread, then use
First piston and the second piston are fixed by one shear pin and the second shear pin respectively with central canal；
Wherein, before assembling, on the first joint, on the second section header, the surfaces externally and internally of first piston and second
The surfaces externally and internally of piston fit on O-ring seals respectively.
Further, in step b, the two ends of described packing element put soft metal ring the most respectively, the most again by first
Packing element pressure ring and the second packing element pressure ring are respectively fitted over the two ends of packing element.
Use the pit shaft hoop packing method of above-mentioned packer, comprise the steps:
A. above-mentioned packer being accessed completion tubular column, the second joint of wherein said packer is connected by oil pipe
With the shaft isolation valve of ball seat, the first joint is connected with oil pipe or drilling rod；
B. described packer is delivered to downhole designs position, by drilling rod or oil pipe put into setting ball to pit shaft every
Absolutely on the ball seat of valve；
C. suppressing from oil pipe or drilling rod, pressure is by the first pressure transmission hole on central canal and the second pressure transmission hole difference
Being delivered on first piston and the second piston, after pressure reaches shear force, the first shear pin and second is cut
Cut pin to be cut off respectively, first piston and the second piston pressure under effect respectively in axial direction to central canal
Middle part move, final pressure is transferred to the both sides of main packing element, makes main packing element by compression swelling, ultimately forms close
Envelope packing；
D. simultaneously, first piston and the first locking slips are mutually twisted, and stop first piston to the first joint side
To movement, the second piston and the second locking slips are engaged, stop the second piston to move to the second joint direction
Dynamic, thus stop packing element resilience, form persistently packing.
Embodiment 2
The present embodiment is on the basis of above-described embodiment 1, by the first slips 7 and second in embodiment 1
Slips 22 replaces with block insert type casing slip.
Seeing Fig. 2 to Fig. 5, a kind of hanging packer, including two block insert type casing slips 4, an insert
Formula casing slip 4 is arranged between the second cone 6 and the second piston 7, another block insert type casing slip 4
It is arranged between the first cone 8 and first piston 9；
Block insert type casing slip 4 includes small casing slips 2 and big casing slip 1, big casing slip 1 extenal fixation
It is arranged with at least one small casing slips 2.
As preferably, the material of big casing slip 1 is cast iron, and the material of small casing slips 2 is bearing steel.
Seeing Fig. 6 to Figure 10, big casing slip 1 includes that shell 10, shell 10 are provided with the first sawtooth button
11 and at least one groove 12, each groove 12 is provided with through hole 13, and shell 10 is provided with at least one and cuts
Cut pin hole 17, be used for shear pin is installed, make big casing slip 1 be fixed on hanging packer;Small casing
Slips 2 includes that body 20, body 20 upper surface are provided with the second sawtooth button 21, and body 20 lower surface connects to be had down
Hook 22, each groove 12 is embedded in a body 20, and barb 22 snaps in the through hole 13 of groove 12.
Seeing Fig. 3 and Fig. 4, body 20 upper surface of small casing slips 2 is positioned at the outside of groove 12.I.e. originally
Body 20 upper surface protrudes from the upper surface of shell 10, the most slightly above upper surface of shell 10.
Seeing Fig. 7 and Figure 10, groove 12 is rectangle, is arc bottom groove 12, and be correspondingly embedded in is little
The body 20 of casing slip 2 is rectangle.The bottom coordinated with groove 12 is arc.
Seeing Fig. 4 and Fig. 5, groove 12 is 6, and each two groove is adjacent, and is a pair, every pair of groove
Being provided with gap between 12, it is average that the shell 10 in described gap is provided with 17,3 pairs of grooves 12 of shear pin nail
Being distributed in the surrounding of shell 10, accordingly, small casing slips 2 is 6, is evenly distributed in shell 10
Surrounding.
Small casing slips its hardness after Overheating Treatment, much larger than sleeve pipe hardness and hardness of cast, keeps during design
Small casing Carvalho protrudes from the surface of big casing slip shell.
The when of work, hanging packer entirety is inside sleeve pipe, in the global design of hanging packer
The external diameter of slips is generally less than the maximum outside diameter (can be seen that in figure) of instrument, so big casing slip is such as
Fruit is not racked by the throw-out collar on side, i.e. slope to be split, and small casing slips does not reaches sleeve pipe, big sleeve pipe
Slips is assemblied on the throw-out collar of hanging packer, in the case of whole hanging packer is idle, and big casing clamp
Watt do not reach sleeve pipe.When hanging packer works when, the extruding that is moved through of piston makes to overlap greatly
Pipe clamp watt ruptures, and small casing slips also can squeezed rupture touching casing wall when, the big set after rupturing
Pipe clamp watt is expanded to surrounding, it is ensured that small casing slips elder generation contact sleeve tube wall, it is achieved hanging packer is mainly by little
Casing slip anchor sleeve.
Seeing Fig. 4, shell 10 is provided with at least one and carefully stitches 14.Shell 10 is provided with U-shaped groove 15.
As preferably, shell 10 top is provided with 9 thin seams 14, and the shell 10 of thin seam 14 bottoms is provided with U-shaped
Groove 16.It is provided with a U-shaped groove 16 between two grooves 12 of every centering, sets between every pair of groove 12
There are two U-shaped grooves 16.
Arranging thin seam and U-shaped groove, U-shaped groove makes shell wall thinning, makes big casing slip be prone to rupture.
Seeing Fig. 3, Fig. 6 and Fig. 8, for ease of connecting, big casing slip 1 and small casing slips 2 are by heavy
Hole screw 3 is fixed together.Big casing slip 1 is provided with the first screw hole 16, small casing slips 2
It is provided with the second screw hole 23.First screw hole 16 is corresponding with the second screw hole 23, is used for installing counterbore
Screw 3.
See Fig. 2, during assembling, 6 small casing slips 2 are separately mounted on big casing slip 1 outer wall
In 6 corresponding grooves, fasten with counterbore screw 3 the most respectively, by big casing slip 1 and small casing slips
2 are fixed together, and i.e. complete the assembling of block insert type casing slip.When assembling whole hanging packer,
Only existing slips need to be replaced by the block insert type casing slip assembled, shear pin 5 is contained in big casing clamp
Shear pin nail 17(on watt 1 sees Fig. 4) in be fixed together, always with first, second cone respectively
Only the integral type casing slip of embodiment 1 need to be changed into block insert type casing slip of the present invention during body assembling,
Same each hanging packer is equipped with two block insert type casing slips.
The Gr15(bearing steel used due to small casing slips of the present invention), so insert during hanging packer work
The degree of depth that formula casing slip can be engaged with casing wall is deeper, simultaneously tubing string shake in acid fracturing volume increase construction
Also ensure good wearability in the case of Dong, provide sound assurance, greatly for acid fracturing volume increase construction
Reduce greatly construction risk.The block insert type casing slip of the present invention has advantage frangible, that hardness is high and wear-resisting concurrently.
The rational material selection of the present embodiment, it is achieved that product cost is low, and have concurrently frangible, hardness is high and
Wear-resisting feature；Using bearing steel and corresponding structure design, the degree of depth making slips be engaged is deeper, because axle
Holding steel hardness more than the hardness of casing wall, the big occlusion of hardness just deep, structure is mainly designed to On The Quality of Bearing Steels
Small casing Carvalho exceed ironcasting height, such small casing slips stress is more concentrated.Use the present invention's
Structure designs, in the case of not affecting hanging packer overall structure, it is achieved with Gr15(bearing steel) part
Be main, ironcasting be auxiliary the higher anchoring structure of reliability.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (6)
1. a hanging packer, it is characterised in that include two block insert type casing slips, a described edge
Block formula casing slip is arranged between the second cone and the second piston, and another described block insert type casing slip is pacified
It is contained between the first cone and first piston；
Described block insert type casing slip, including small casing slips and big casing slip, outside described big casing slip
Fixed cover is provided with at least one described small casing slips；
The material of described big casing slip is cast iron, and the material of described small casing slips is bearing steel；
Described big casing slip includes that shell, described shell are provided with sawtooth button and at least one first groove, often
Individual described first groove is provided with through hole；Described shell is provided with at least one shear pin nail, is used for installing
Shear pin, makes big casing slip be fixed in the first cone or the second cone；Described small casing slips includes
Body, described body upper surface is provided with sawtooth button, and described body lower surface connects barb, and each described first
Groove is embedded in a described body, and described barb snaps in the through hole of described first groove；
U-shaped groove it is additionally provided with on described shell；
Described shell is provided with at least one and carefully stitches.
Hanging packer the most according to claim 1, it is characterised in that the basis of described small casing slips
Body upper surface is positioned at the outside of described first groove.
Hanging packer the most according to claim 2, it is characterised in that described first groove is rectangular
Shape, the body of the described small casing slips being correspondingly embedded in is rectangle.
Hanging packer the most according to claim 3, it is characterised in that described first groove is 6,
Each two the first groove is adjacent, and is a pair, is provided with gap, outside described gap between every pair of first groove
Shell is provided with shear pin nail, and 3 are evenly distributed in the surrounding of described shell, described small casing card to the first groove
Watt it it is 6.
Hanging packer the most according to claim 1, it is characterised in that described shell upper is provided with 9
Bar carefully stitches, and the shell of described thin seam bottom is provided with described U-shaped groove.
6. according to the hanging packer described in any one of claim 1-5, it is characterised in that described big sleeve pipe
Slips is fixed together by counterbore screw with described small casing slips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210586757.4A CN103899272B (en) | 2012-12-28 | 2012-12-28 | A kind of hanging packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210586757.4A CN103899272B (en) | 2012-12-28 | 2012-12-28 | A kind of hanging packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103899272A CN103899272A (en) | 2014-07-02 |
| CN103899272B true CN103899272B (en) | 2016-10-05 |
Family
ID=50990819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210586757.4A Active CN103899272B (en) | 2012-12-28 | 2012-12-28 | A kind of hanging packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103899272B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727776A (en) * | 2015-02-12 | 2015-06-24 | 中国海洋石油总公司 | Hanging packer for horizontal well multistage fracturing |
| CN108266153B (en) * | 2018-02-07 | 2023-08-29 | 中国石油天然气集团有限公司 | Suspension sealing integrated single-hydraulic cylinder self-locking hanger |
| CN114458223B (en) * | 2021-07-06 | 2023-10-31 | 中海油能源发展股份有限公司 | Layered packer for large-drift-diameter water injection and application method thereof |
| CN113250647B (en) * | 2021-07-19 | 2021-09-14 | 中国石油集团川庆钻探工程有限公司 | Suspension well completion integrated packer and well completion pipe string |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963048A (en) * | 2010-10-15 | 2011-02-02 | 镇江安达煤矿专用设备有限公司 | Split slip sleeve |
| CN102575507A (en) * | 2010-08-09 | 2012-07-11 | 哈里伯顿能源服务公司 | Expansion device |
| CN202417418U (en) * | 2011-12-29 | 2012-09-05 | 安东石油技术（集团）有限公司 | Two-way base seal hanging packer |
| CN203161163U (en) * | 2012-12-28 | 2013-08-28 | 安东石油技术（集团）有限公司 | Suspension packer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7082991B2 (en) * | 2002-04-18 | 2006-08-01 | Team Oil Tools | Slip spring with heel notch |
-
2012
- 2012-12-28 CN CN201210586757.4A patent/CN103899272B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575507A (en) * | 2010-08-09 | 2012-07-11 | 哈里伯顿能源服务公司 | Expansion device |
| CN101963048A (en) * | 2010-10-15 | 2011-02-02 | 镇江安达煤矿专用设备有限公司 | Split slip sleeve |
| CN202417418U (en) * | 2011-12-29 | 2012-09-05 | 安东石油技术（集团）有限公司 | Two-way base seal hanging packer |
| CN203161163U (en) * | 2012-12-28 | 2013-08-28 | 安东石油技术（集团）有限公司 | Suspension packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103899272A (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8579023B1 (en) | Composite downhole tool with ratchet locking mechanism | |
| CN103899272B (en) | A kind of hanging packer | |
| CN103184850B (en) | Two-way setting hanging packer and preparation method thereof and pit shaft hoop packing method | |
| CN202417418U (en) | Two-way base seal hanging packer | |
| CN110185414B (en) | External expansion type soluble bridge plug | |
| CN200968195Y (en) | Permanent type sealing anchoring packer | |
| CN103397863B (en) | Double acting compression packer and using method thereof | |
| CN111472690B (en) | Sidetracking well completion method | |
| WO2017198121A1 (en) | Rubber cylinder having higher stiffness in upper end portion, packer, and bridge plug | |
| CN215292438U (en) | Recyclable oil pipe bridge plug | |
| CN202914002U (en) | Ball suspension type core catcher coring drill | |
| CN101864923A (en) | Split type anchor suspension packer | |
| CN202381036U (en) | Suspension type squeezing bridge plug | |
| CN201778750U (en) | Suspension compression fracture packer | |
| CN108119107A (en) | Liner hanger sets instrument and its application method | |
| CN103899258B (en) | A kind of block insert type casing slip | |
| CN203161119U (en) | Insert type casing slip | |
| CN210343302U (en) | External expansion type soluble bridge plug | |
| CN201778707U (en) | Disfunctional safety release with plug-in butt joint | |
| CN109899047B (en) | Tieback fracturing method and anchoring retrievable tieback fracturing shaft | |
| CN203161163U (en) | Suspension packer | |
| CN206888948U (en) | A kind of Hydraulic Anchorage sealing device | |
| CN203420665U (en) | Double-acting compression type packer | |
| CN109267943B (en) | Tieback tubular column | |
| RU2344270C2 (en) | Drillable packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181227 Address after: No. 309, Second Street, Middle and South China, West District, Tianjin Binhai Economic and Technological Development Zone, 300450 Patentee after: Tianjin An Dong petroleum machinery Manufacturing Co., Ltd Address before: 100102 No. 8 Pingcui West Road, Donghuqu, Chaoyang District, Beijing Patentee before: Anton Oilfield Services (Group) Ltd. |