CN105971549A - Embedded sealing device and installation tool thereof - Google Patents
Embedded sealing device and installation tool thereof Download PDFInfo
- Publication number
- CN105971549A CN105971549A CN201610124711.9A CN201610124711A CN105971549A CN 105971549 A CN105971549 A CN 105971549A CN 201610124711 A CN201610124711 A CN 201610124711A CN 105971549 A CN105971549 A CN 105971549A
- Authority
- CN
- China
- Prior art keywords
- central canal
- slips
- hand member
- ring
- hydraulic
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 title claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
The invention provides an embedded sealing device. The embedded sealing device comprises a center pipe, slips, conical bodies, a distance ring and a locking sleeve. The left end of the center pipe is connected with a plug or a well cementation attachment function unit, and the right end of the center pipe is connected with the locking sleeve through an external thread. Each slip is of a conical structure with an opening. Each conical body is of a conical-pipe-shaped structure, and the two conical bodies are oppositely arranged in the middle of the center pipe through inner holes of the conical bodies in a sleeving mode correspondingly. The distance ring is arranged in the position, between the two conical bodies, of the center pipe in a sleeving mode. The outer conical surface of each conical body is provided with the corresponding slip in a matched mode. A clamp spring groove is formed in the locking sleeve and used for installing a clamp spring. Compared with the prior art, the embedded sealing device has the following advantages that a well cementation attachment can be more easily set on the inner wall of a casing pipe through the two sets of slips with stress grooves being machined and can bear bi-directional loads, and the tool is safer through the locking sleeve provided with the clamp spring.
Description
Technical field
The invention belongs to well cementing operation technical field of tools, especially relate to a kind of embedded sealed device and
Its installation tool.
Background technology
Well cementation is last link of drilling engineering, and casing hardware (float collar, float shoe, ball seat etc.) is right
Drilling engineering quality and economic benefit have directly impact.Deep-well, ultradeep well, gas storage well, sea at present
The sleeve pipe that upper oil field etc. use contains increasing special thread, the connection sealing requirement between sleeve pipe
More and more higher, owing to matched well cementation adnexa needs to process corresponding casing threads, because of processing producer
Less, difficulty of processing big, consequent costly and screw processing quality is not easy to ensure, increase
The mistake envelope risk of sleeve pipe pipe string.
In order to solve the problems referred to above, develop embedded well cementation adnexa at present, by sealing unit and function
Unit forms.Sealing unit has slips and sealing ring, can directly set in sleeve pipe；Sealing unit can
To connect with different functional units, form embedded float collar, embedded float shoe, embedded ball seat etc..
But, the instrument about embedded well cementation adnexa being currently known and patent, all there is no control measure
The situation that the embedded well cementation adnexa occurred in application process with reply sets incessantly or slides.
Therefore, well cementation scene needs a kind of rational in infrastructure, low price, easy to operate the most safe and reliable
Embedded well cementation adnexa.
Summary of the invention
In view of this, it is contemplated that propose a kind of embedded sealed device, attached to solve embedded well cementation
The problem that part and sleeve pipe set incessantly or slide.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of embedded sealed device, including central canal, slips, bullet, spacer ring and lock sleeve；Institute
Stating central canal is tubular structure, and its left end connects plug or well cementation attachment function unit, and its right-hand member is by outward
Screw thread is connected with lock sleeve；
Described slips is the pyramidal structure of opening, and its Excircle machining has anti-slop serrations, described bullet to be taper
Tubular structure, two described bullets are enclosed within the middle part of central canal, two cones in opposite directions by respective endoporus
The spacer ring being enclosed within central canal it is provided with between body；The male cone (strobilus masculinus) cooperation of each taper is provided with slips, taper
The male cone (strobilus masculinus) of body coordinates with the inner conical surface of slips and has auto-lock function；
The left end excircle of described central canal is provided with spacing protuberance, the right side pair of spacing protuberance and its
Adjacent slips carries out spacing；Described lock sleeve has jump-ring slot, is used for installing jump ring.
Further, it is sequentially provided with, between each described bullet and spacer ring end face, the gear being enclosed within central canal
Circle and V-shaped seal ring.
Further, described lock sleeve has solution draw-in groove.
Further, the right-hand member of described central canal is additionally provided with female thread.
Further, described anti-slop serrations is uniformly distributed machined a stress groove.
Further, the excircle that described plug contacts with central canal is provided with seal groove, described seal groove
Interior mounting O-shaped sealing ring.
Relative to prior art, embedded sealed device of the present invention has the advantage that
Described 2 groups machined the slips of stress groove and are easier to set on internal surface of sleeve pipe by well cementation adnexa and can
Bearing bidirectional load, the lock sleeve with jump ring makes instrument safer.
Another object of the present invention is to propose a kind of installation for installing above-mentioned embedded sealed device
Instrument, in order to the installation of above-mentioned embedded sealed device and maintenance.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of installation tool for installing above-mentioned embedded sealed device, including pushing cylinder, drawing joint,
Mandrel, cylinder sleeve, drive end bearing bracket, piston, back-moving spring, stablize axle, hydraulic pressure hole, hydraulic joint, hydraulic pressure
Pipeline, hydraulic pump, lock hollow pin；
The left end of described drawing joint is provided with screw thread, can be connected with central canal right-hand member by screw thread, and drawing connects
The right-hand member of head is connected with the left end of mandrel by pin；The section of described cylinder sleeve is notch cuttype, in the middle part of it
Ladder turning tongue and groove top-right with the drive end bearing bracket being enclosed within the mandrel left side coordinates, and drive end bearing bracket passes through with cylinder sleeve
Threaded, the right-hand member of cylinder sleeve is enclosed within mandrel；It is sequentially provided with between drive end bearing bracket and cylinder sleeve right-hand member in mandrel
Piston and back-moving spring,
The described left side stablizing axle is connected with cylinder sleeve, is provided with hydraulic pressure hole, described hydraulic pressure hole in described cylinder sleeve
Left end connection drive end bearing bracket and piston between chamber, right-hand member by hydraulic joint connect hydraulic line, liquid
The other end of pressure pipeline connects hydraulic pump；Hydraulic pump is provided with hydralic pressure gauge.
Above-mentioned proprietary installation tool is easier to quantify the setting force of well cementation adnexa, can realize at operation field
Embedded sealed device is installed, and rational in infrastructure, easy and simple to handle, function is reliable, reduces well cementation cost.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the sectional view of embedded sealed device described in the embodiment of the present invention；
Fig. 2 is cuing open of embedded sealed device described in the embodiment of the present invention (not filling lock sleeve and without sleeve pipe)
View；
Fig. 3 is the front view of slips described in the embodiment of the present invention；
Fig. 4 is the left view of slips described in the embodiment of the present invention；
Fig. 5 is the front view of lock sleeve described in the embodiment of the present invention；
Fig. 6 is lock sleeve left view described in the embodiment of the present invention；
Fig. 7 is the overall structure principle of embedded sealed device and installation tool described in the embodiment of the present invention
Figure；
Fig. 8 is locking hollow pin profile described in the embodiment of the present invention；
Fig. 9 is the left view locking hollow pin described in the embodiment of the present invention.
Wherein:
1. plug, 2. central canal, 3.O RunddichtringO, 4-1,4-2. slips, 5-1,5-2. bullet,
6-1,6-2. back-up ring, 7-1,7-2.V RunddichtringO, 8. spacer ring, 9. lock sleeve, 10. jump ring, 11.
Sleeve pipe, 15. pushing cylinders, 16. drawing joints, 17. pins, 18. mandrels, 19. cylinder sleeves, 20. drive end bearing brackets,
21. sealing rings, 22. pistons, 23. back-moving springs, 24. bolts, 25. stablize axle, 26. hydraulic pressure holes, and 27.
Hydraulic joint, 28. hydraulic lines, 29. hydraulic pumps, 30. Pressure gauges, 31. locking hollow pins, 32. jump rings
Groove, 33. solve draw-in groove, 34. stress grooves.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
A kind of embedded sealed device, as shown in Figure 1, 2, including plug 1, central canal 2, two cards
Watt 4-1,4-2, two bullets 5-1,5-2, spacer ring 8 and lock sleeve 9；
Described central canal 2 is tubular structure, and its left end is connected with plug 1 by female thread, and its right-hand member leads to
Cross external screw thread to be connected with lock sleeve 9；Plug 1 can also be replaced with the well cementation attachment function unit of needs,
Form embedded float collar, embedded float shoe, embedded be located joint, embedded blind plate etc., formed embedded
Formula well cementation adnexa；
As shown in Figure 3,4, two described slips 4-1,4-2 structures are identical, for the pyramidal structure of opening,
Its Excircle machining has anti-slop serrations,
Two described bullet 5-1,5-2 are tapered tubular structure, two described bullet 5-1,5-2
It is enclosed within opposite directions by respective endoporus in the middle of the middle part of central canal 2, bullet 5-1 and bullet 5-2 and sets
There is the spacer ring 8 being enclosed within central canal 2；
The male cone (strobilus masculinus) of bullet 5-1,5-2 is respectively cooperating with being provided with slips 4-1,4-2, bullet 5-1,
The male cone (strobilus masculinus) of 5-2 coordinates and has auto-lock function, slips 4-1,4-2 with the inner conical surface of slips 4-1,4-2
There is relative movement in bullet 5-1, the 5-2 coordinated during axially loaded with it, can make slips 4-1,4-2
External diameter increases, and sets on sleeve pipe 11；
The left end excircle of described central canal 2 is provided with spacing protuberance, the right side pair of spacing protuberance with
Its adjacent slips 4-1 carries out spacing；Lock sleeve 9 carries out axial location to the slips 4-2 being adjacent
Regulation is with spacing；
As shown in Figure 5,6, described lock sleeve 9 has jump-ring slot 32, can install jump ring 10, when interior
When embedded sealing device surprisingly sets shakiness or occurs sliding, jump ring 10 can be stuck in two casing joints
Between gap in case injure this embedded well cementation adnexa upper and lower other well cementation adnexaes.
It is sequentially provided with, between described bullet 5-1 and spacer ring 8 end face, the back-up ring being enclosed within central canal 2 respectively
6-1 and V-shaped seal ring 7-1；Set it is sequentially provided with respectively between described bullet 5-2 and spacer ring 8 end face
Back-up ring 6-2 on central canal 2 and V-shaped seal ring 7-2.
As shown in Figure 5,6, described lock sleeve 9 have solution draw-in groove 33, with installation tool with the use of,
Its axially-movable can be controlled with rotary locking cover 9, compress slips 4-2, to prevent slips 4-2 from loosening.
The right-hand member of described central canal 2 is additionally provided with female thread, can be coordinated with installation tool by female thread and make
With, with moving axially of control centre's pipe 2.
It is uniformly distributed on described anti-slop serrations and machined 4 stress grooves 34 and be beneficial to anti-slop serrations wedging sleeve pipe 11.
The excircle that described plug 1 contacts with central canal 2 is provided with seal groove, installs in described seal groove
O RunddichtringO 3.
The installation tool of above-mentioned embedded sealed device, as it is shown in fig. 7, comprises pushing cylinder 15, drawing joint
16, mandrel 18, cylinder sleeve 19, drive end bearing bracket 20, piston 22, back-moving spring 23, stablize axle 25, liquid
Pressure hole 26, hydraulic joint 27, hydraulic line 28, hydraulic pump 29, lock hollow pin 31；
The left end of described drawing joint 16 is provided with external screw thread, can be connected with central canal 2 right-hand member by screw thread,
The right-hand member of drawing joint 16 is connected with the left end of mandrel 18 by pin 17；
The section of described cylinder sleeve 19 is notch cuttype, the ladder turning in the middle part of it be enclosed within mandrel 18 left side
The top-right tongue and groove of drive end bearing bracket 20 coordinates, and drive end bearing bracket 20 is threaded connection with cylinder sleeve 19, cylinder sleeve
The right-hand member of 19 is enclosed within mandrel 18；It is sequentially provided with between drive end bearing bracket 20 and cylinder sleeve 19 right-hand member in mandrel 18
Piston 22 and back-moving spring 23,
Between described piston 22 and cylinder sleeve 19, by sealing ring 21 between drive end bearing bracket 20 and cylinder sleeve 19
Seal.
Sealed by sealing ring 21 between described drive end bearing bracket 20 and mandrel 18.
The described left side stablizing axle 25 is connected by bolt 24 with cylinder sleeve 19, stablizes axle 25 center roller 18
Protected effect, can be fixing with stable installation tool with chain wrench.
Be provided with hydraulic pressure hole 26 in described cylinder sleeve 19, the left end in described hydraulic pressure hole 26 connection drive end bearing bracket 20 with
Chamber between piston 22, right-hand member connects hydraulic line 28, hydraulic line 28 by hydraulic joint 27
The other end connect hydraulic pump 29；Hydraulic pump 29 is provided with hydralic pressure gauge 30.
The method applying described installation tool to install embedded sealed device comprises the steps:
1) O RunddichtringO 3 is installed on plug 1；
2) plug 1 is connected with central canal 2；
3) by slips 4-1, bullet 5-1, back-up ring 6-1, V-shaped seal ring 7-1, spacer ring 8, V-type
Sealing ring 7-2, back-up ring 6-2, bullet 5-2, slips 4-2 are installed on central canal 2 successively, such as figure
Shown in 9；
4) sealing ring 21 is installed on piston 22；
5) piston 22 is installed in mandrel 18；
6) back-moving spring is installed in mandrel 18；
7) mandrel 18 is installed on cylinder sleeve 19；
8) sealing ring 21 is installed on drive end bearing bracket 20；
9) drive end bearing bracket 20 is installed on cylinder sleeve 19；
10) stable axle 25 is installed on cylinder sleeve 19 by bolt 24；
11) hydraulic joint 27 one end being connected hydraulic pressure hole 26, the other end connects hydraulic line 28；
12) hydraulic pump 29 being provided with hydralic pressure gauge 30 is connected with hydraulic line 28；
13) drawing joint 16 is threaded connection with central canal 2, it is not necessary to tighten；
14) pushing cylinder 15 is installed on drawing joint 16, and contacts with slips 4-2；
15) drawing joint 16 is connected by pin 17 with mandrel 18；
16) embedded sealed device and its installation tool are sent into sleeve pipe 11, as shown in Figure 2；
17) start hydraulic pump 29, promote piston 22 move axially, thus drive drawing joint 16, in
Heart pipe 2 moves successively, is set in sleeve pipe 11 by two slips；
18) closing hydraulic pump 29 pressure release, piston 22 sets back under the effect of back-moving spring 23；
19) unloading bolt 24, unload stable axle 25, mandrel 18, by drawing joint 16 and center
Pipe 2 unclamps；
20) installation tool is taken out；
21) jump ring 10 is installed on the jump-ring slot 32 of lock sleeve 9, with adhesive tape opening jump ring 10
Mouth clings and is beneficial to lock sleeve 9 and puts into sleeve pipe 11；
22) after lock sleeve 9 being put into sleeve pipe 11, with locking hollow pin 31 rotation lock set 9 until being adjacent to
Slips 4-2, as shown in Figure 1；
23) cut off with cutter cling the adhesive tape of jump ring 10 by solving draw-in groove 33, so far, embedded sealed
Device installs.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (7)
1. an embedded sealed device, it is characterised in that: include central canal, slips, bullet,
Spacer ring and lock sleeve；
Described central canal is tubular structure, and its left end connects plug or well cementation attachment function unit, its right-hand member
It is connected with lock sleeve by external screw thread；
Described slips is the pyramidal structure of opening, and its Excircle machining has anti-slop serrations, described bullet to be taper
Tubular structure, two described bullets are enclosed within the middle part of central canal, two cones in opposite directions by respective endoporus
The spacer ring being enclosed within central canal it is provided with between body；
The male cone (strobilus masculinus) cooperation of each bullet is provided with slips, and the male cone (strobilus masculinus) of bullet is joined with the inner conical surface of slips
Merge and there is auto-lock function；
The left end excircle of described central canal is provided with spacing protuberance, the right side pair of spacing protuberance and its
Adjacent slips carries out spacing；
Described lock sleeve has jump-ring slot, is used for installing jump ring.
Embedded sealed device the most according to claim 1, it is characterised in that: each described cone
The back-up ring being enclosed within central canal and V-shaped seal ring it is sequentially provided with between body and spacer ring end face.
Embedded sealed device the most according to claim 1, it is characterised in that: described lock sleeve
Have solution draw-in groove.
Embedded sealed device the most according to claim 1, it is characterised in that: described central canal
Right-hand member be additionally provided with female thread.
Embedded sealed device the most according to claim 1, it is characterised in that: described anti-slop serrations
On be uniformly distributed and machined 4 stress grooves.
Embedded sealed device the most according to claim 1, it is characterised in that: described plug with
The excircle of central canal contact is provided with seal groove, mounting O-shaped sealing ring in described seal groove.
7. for the installation tool of the power of installing 1 to power 6 arbitrary described embedded sealed devices, its feature
It is: include pushing cylinder, drawing joint, mandrel, cylinder sleeve, drive end bearing bracket, piston, back-moving spring, stablize
Axle, hydraulic pressure hole, hydraulic joint, hydraulic line, hydraulic pump, lock hollow pin；
The left end of described drawing joint is provided with screw thread, can be connected with central canal right-hand member by screw thread, and drawing connects
The right-hand member of head is connected with the left end of mandrel by pin；The section of described cylinder sleeve is notch cuttype, in the middle part of it
Ladder turning tongue and groove top-right with the drive end bearing bracket being enclosed within the mandrel left side coordinates, and drive end bearing bracket passes through with cylinder sleeve
Threaded, the right-hand member of cylinder sleeve is enclosed within mandrel；It is sequentially provided with between drive end bearing bracket and cylinder sleeve right-hand member in mandrel
Piston and back-moving spring,
The described left side stablizing axle is connected with cylinder sleeve, is provided with hydraulic pressure hole, described hydraulic pressure hole in described cylinder sleeve
Left end connection drive end bearing bracket and piston between chamber, right-hand member by hydraulic joint connect hydraulic line, liquid
The other end of pressure pipeline connects hydraulic pump；Hydraulic pump is provided with hydralic pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610124711.9A CN105971549A (en) | 2016-03-04 | 2016-03-04 | Embedded sealing device and installation tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610124711.9A CN105971549A (en) | 2016-03-04 | 2016-03-04 | Embedded sealing device and installation tool thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971549A true CN105971549A (en) | 2016-09-28 |
Family
ID=56988951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610124711.9A Pending CN105971549A (en) | 2016-03-04 | 2016-03-04 | Embedded sealing device and installation tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971549A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076726A (en) * | 2019-05-06 | 2019-08-02 | 西南石油大学 | Installing and dismounting pipe thread device in a kind of pipe |
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| CN2563293Y (en) * | 2002-07-08 | 2003-07-30 | 泸州长江液压件制造有限公司 | Casing blanking plug for hydraulic changing valve with pressure |
| CN201121501Y (en) * | 2007-11-05 | 2008-09-24 | 新疆石油管理局钻井公司 | Pressure balancing oil production tree or gas production tree replacing device |
| CN202176310U (en) * | 2011-08-17 | 2012-03-28 | 周战云 | Built-in sleeve floating hoop |
| US20130186616A1 (en) * | 2012-01-25 | 2013-07-25 | Baker Hughes Incorporated | Tubular anchoring system and a seat for use in the same |
| CN105332673A (en) * | 2015-11-30 | 2016-02-17 | 天津汇铸石油设备科技有限公司 | Mechanical bridge plug of packer |
| CN205577941U (en) * | 2016-03-04 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Embedded sealing device and mounting tool thereof |
-
2016
- 2016-03-04 CN CN201610124711.9A patent/CN105971549A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2563293Y (en) * | 2002-07-08 | 2003-07-30 | 泸州长江液压件制造有限公司 | Casing blanking plug for hydraulic changing valve with pressure |
| CN201121501Y (en) * | 2007-11-05 | 2008-09-24 | 新疆石油管理局钻井公司 | Pressure balancing oil production tree or gas production tree replacing device |
| CN202176310U (en) * | 2011-08-17 | 2012-03-28 | 周战云 | Built-in sleeve floating hoop |
| US20130186616A1 (en) * | 2012-01-25 | 2013-07-25 | Baker Hughes Incorporated | Tubular anchoring system and a seat for use in the same |
| CN105332673A (en) * | 2015-11-30 | 2016-02-17 | 天津汇铸石油设备科技有限公司 | Mechanical bridge plug of packer |
| CN205577941U (en) * | 2016-03-04 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Embedded sealing device and mounting tool thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076726A (en) * | 2019-05-06 | 2019-08-02 | 西南石油大学 | Installing and dismounting pipe thread device in a kind of pipe |
| CN110076726B (en) * | 2019-05-06 | 2021-04-09 | 西南石油大学 | Pipe fastener mounting and dismounting device in pipe |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160928 |
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