CN107939334A - A kind of plunger type amplificate packer - Google Patents
A kind of plunger type amplificate packer Download PDFInfo
- Publication number
- CN107939334A CN107939334A CN201711070141.0A CN201711070141A CN107939334A CN 107939334 A CN107939334 A CN 107939334A CN 201711070141 A CN201711070141 A CN 201711070141A CN 107939334 A CN107939334 A CN 107939334A
- Authority
- CN
- China
- Prior art keywords
- closure
- cylinder chamber
- startup
- chamber
- spool
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Abstract
The present invention relates to oil/gas drilling,Completion,Well cementation or logging technique field,More particularly to a kind of plunger type amplificate packer,The both ends of expansion pipe are fixedly connected with upper casing and setting of casing respectively,It is fixedly connected respectively with upper casing and setting of casing with the both ends of central tube,Start spool and be fixed on by starting nail in startup cylinder chamber,Closure spool is fixed in closure cylinder chamber by blocking nail,Through the flow-in hole connection center tube cavity and startup chamber of central tube,Closure cylinder chamber lower end is provided with the through hole of connection expansion cavity,Intermediate channel is through the side wall for blocking cylinder chamber and connects startup chamber and expansion cavity,And closure mouth is formed in closure cylinder chamber side wall and startup cylinder chamber side wall respectively and start mouth,Start spool and be activated trigger valve covering startup mouth when nail is fixed,It is unimpeded to block intermediate channel when spool is fixed by closure nail,After closure nail fracture,Closure spool can move covering closure mouth,Sealing characteristics is good.
Description
Technical field
The present invention relates to oil/gas drilling, completion, well cementation or logging technique field, and in particular to a kind of plunger type expansion envelope
Every device.
Background technology
In oil-gas field development underground work, and in the operation such as drilling well, well cementation, test, completion, existing packer is easy
Occur causing hair fastener because distorting, or can not unseal, set unstable, easily destroyed etc. situation of packing element, current packer
Packing element expansion is set to realize segmentation using mechanical presses packing element more, there are the above problem.
The content of the invention
It is an object of the invention to：For current mechanical extruding type packing element there are hair fastener, can not unseal or set shakiness
The problem of determining, there is provided a kind of plunger type amplificate packer, makes metal enlargement of pipe to carry out using the change of pressure in the course of work
Set, can effectively alleviate the above problem.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of plunger type amplificate packer, including central tube, expansion and set valve at pipe, upper casing, setting of casing, the expansion
Pipe sleeve is located on the central tube, and the both ends of the expansion pipe are fixedly connected with the upper casing and setting of casing respectively, and described
The both ends of central tube are fixedly connected with the upper casing and setting of casing respectively, the central tube, upper casing, expansion pipe and setting of casing
Cooperatively form expansion cavity,
The valve that sets includes starting spool, starts nail, block spool, closure nail, start cylinder chamber and closure cylinder chamber,
It is described startup spool by start nail be fixed on it is described startup cylinder chamber in, and by it is described startup cylinder chamber be divided into start chamber and
Starting deblocking chamber two parts, the closure spool is fixed in closure cylinder chamber by blocking nail, and by the closure cylinder chamber
Closure chamber and closure deblocking chamber two parts are divided into, closure deblocking chamber does not connect mutually with deblocking chamber is started,
The center tube cavity and the startup chamber are connected through the flow-in hole of the central tube, it is described to block under cylinder chamber
End is provided with the through hole for connecting the expansion cavity so that the fluid of the expansion cavity can pass through closure described in the through hole pressure holding
The lower face of spool,
Intermediate channel is through the side wall for blocking cylinder chamber and connects the startup chamber and the expansion cavity, and exists respectively
The closure cylinder chamber side wall and the startup cylinder chamber side wall form closure mouth and start mouth,
The startup spool is activated trigger valve when nail is fixed and covers the startup mouth, and the closure spool is described
The intermediate channel is unimpeded when closure nail is fixed, and after the closure nail fracture, the closure spool can move the covering envelope
Block up.
Preferably, the valve pocket for setting valve and further including tubular, the valve pocket are set in the central tube and the expansion
Between opening pipe, the startup cylinder chamber and the closure cylinder chamber are arranged in the valve pocket, both are successively along the valve pocket
Circumferentially, intermediate channel is also disposed in valve pocket.
Preferably, the startup cylinder chamber and the closure cylinder chamber quantity are at least two, the startup cylinder chamber
With the closure cylinder chamber along the circumferentially-spaced arrangement of the valve pocket, start cylinder chamber and coordinate with starting spool, closure cylinder chamber with
Spool is blocked to coordinate.
Preferably, the valve pocket outer surface sets the oriented concave recess of diametric(al), the recess is along the valve pocket
Axis prolong until through the lower face of the valve pocket, the wall of the recess is run through in one end of the intermediate flow channel so that in
Between runner connected with expansion cavity.
Preferably, the valve pocket includes major diameter section and path section, the path section outer surface forms the recess.
Preferably, the central tube includes big pipeline section and small pipe section, the valve pocket is set on the small pipe section, described
The internal diameter of valve pocket is less than the outside diameter of the big pipeline section.
Preferably, packer further includes closure deblocking runner, closure deblocking chamber described in the closure deblocking flow passage
With the first pump pressure equipment for being arranged on ground.
Preferably, packer further includes startup deblocking runner, described start starts deblocking chamber described in deblocking flow passage
With the second pump pressure equipment for being arranged on ground.
In conclusion by adopting the above-described technical solution, the beneficial effect of the application is：It can reliably realize packing
Device is set, and packer packing separating performance is preferable.
Brief description of the drawings
Fig. 1 is the structure diagram of the application packer；
Fig. 2 is the partial enlarged view of A in Fig. 1；
Fig. 3 is the structure diagram that the application sets valve；
Fig. 4 is the structure diagram of the application valve pocket；
Marked in figure：The upper casings of 1-, 11- top connections, 12- upper bushes, 2- central tubes, 21- flow-in holes, 22- small pipe sections,
The big pipeline sections of 23-, 3- set valve, and 30- valve pockets, 31- closure spools, 32- startup spools, 33-, which is blocked, to be followed closely, and 34- starts nail, and 35- is sealed
Stifled cylinder chamber, 351-, which is blocked, unseals chamber, 36- startup cylinder chambers, 361- startup deblocking chambers, 362- startup chambers, 37- intermediate flow channels,
371- starts mouth, 372- closure mouths, 38- through holes, 391- major diameter sections, 392- path sections, 4- expansion cavities, 5- expansion pipes, 51- bones
Frame, 52- protective layers, 521- internal layers, 522- outer layers, 6- closure deblocking runners, 7- start deblocking runner, 8- setting of casings, and 81- traps
Cylinder, 82- lower contacts.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As shown in Figs 1-4, a kind of plunger type amplificate packer, including central tube 2, expansion pipe 5, upper casing 1, setting of casing 8
With set valve 3, expansion pipe 5 is set on central tube 2, and the both ends of expansion pipe 5 are fixedly connected with upper casing 1 and setting of casing 8 respectively,
It is fixedly connected respectively with upper casing 1 and setting of casing 8 with the both ends of central tube 2, central tube 2, upper casing 1, expansion pipe 5 and setting of casing
8 cooperatively form expansion cavity 4,
Setting valve 3 includes starting spool 32, starts nail 34, block spool 31, closure nail 33, start cylinder chamber 36 and closure
Cylinder chamber 35, starts spool 32 and is fixed on by starting nail 34 in startup cylinder chamber 36, and startup cylinder chamber 36 is divided into and is opened
Move chamber 362 and start deblocking 361 two parts of chamber, closure spool 31 is fixed in closure cylinder chamber 35 by closure nail 33, and will
Closure cylinder chamber 35 is divided into closure chamber and closure deblocking 351 two parts of chamber, blocks the deblocking chamber of cylinder chamber 35 and starts cylindricality
The deblocking chamber of chamber 36, connects 2 inner cavity of central tube through the flow-in hole 21 of central tube 2 and starts chamber 362,35 lower end of closure cylinder chamber
It is provided with the through hole 38 of connection expansion cavity 4 so that the fluid of expansion cavity 4 can block the lower end of spool 31 by 38 pressure holding of through hole
Face, intermediate flow channel 37 is through the side wall for blocking cylinder chamber 35 and connects startup chamber 362 and expansion cavity 4, and respectively in closure cylindricality
35 side wall of chamber and 36 side wall of startup cylinder chamber, which are formed, to be blocked mouth 372 and starts mouth 371, when startup spool 32 is activated the fixation of nail 34
Trigger valve covering starts mouth 371, and intermediate flow channel 37 is unimpeded when closure spool 31 is fixed by closure nail 33, after 33 fracture of closure nail,
Closure spool 31 can move covering closure mouth 372.
In use, the pumping of 2 inner cavity of central tube has fluid, start chamber 362 at this time and be also filled with fluid, fluid pressure holding starts spool
32 lower faces so that starting spool 32 has the trend moved upwards, but due to starting the fixation of nail 34 and relative to packer
Remain static, start spool 32 at this time and give startup 34 1 shearing forces of nail, when 2 chamber pressure of central tube raises and reaches
First preset value, that is, start 362 pressure of chamber when reaching the first preset value, fluid gives the motive force transmission for starting spool 32
To start nail 34 so that start spool 32 to start shearing force reach startup nail 34 damage require, start spool 32 cut opens
Dynamic screw, starts spool 32 and is starting upward sliding in cylinder chamber 36 under the action of 362 Fluid pressure of chamber is started, start at this time
After spool 32 slides certain distance, such as after sliding 1cm or 2cm, start 32 side of spool and depart from and start mouth 371, no longer cover
Lid starts mouth 371 and make it that starting mouth 371 opens wide, and starts mouth 371 and is communicated with starting chamber 362, and the fluid for starting chamber 362 at this time leads to
Cross intermediate flow channel 37 and enter expansion cavity 4, pipe 5 is expanded in the fluid pressure holding into expansion cavity 4 so that the outwards deformation expansion of expansion pipe 5,
Expansion 5 outside diameter of pipe becomes larger, untill expansion 5 outer wall of pipe contact barrier, so as to fulfill packing, specifically, in oil gas
When being insulated in well, the 5 outer wall contact of expansion pipe is for example arranged on the internal surface of sleeve pipe of underground, realizes that oil/gas well insulates.
Into 31 lower face of fluid pressure holding closure spool of expansion cavity 4 so that closure spool 31 has the trend moved upwards,
Plugging valve opposite packer under the fixation of closure nail 33 is static, and plugging valve gives closure 33 shearing forces of nail, when 2 inner cavity of central tube
When pressure further raises and reaches the second preset value, fluid pressure holding plugging valve causes plugging valve to cut closure nail 33, so as to seal
Stifled valve upward sliding in cylinder chamber 35 is blocked, so that intermediate flow channel 37 is blocked, that is, starts chamber 362 and expansion cavity 4
Circulation passage blocked by plugging valve, 2 inner cavity of central tube is not connected with expansion cavity 4, and expansion cavity 4 becomes the chamber that is fully sealed,
So as to which 4 volume of expansion cavity will not reduce, packer is constantly in packing state so that packing better reliability.
31 outer surface of closure spool has annular groove, when closure 31 lower face of spool is contacted with 35 bottom surface of closure cylinder chamber
During cooperation, annular groove coordinates with intermediate flow channel 37 so that annular groove becomes a part for intermediate flow channel 37, at this time plugging valve
Core 31 cannot block intermediate flow channel 37, when block spool 31 can upward sliding when, annular groove staggers with intermediate flow channel 37, makes
Obtain annular groove with intermediate flow channel 37 no longer to coordinate, block spool 31 at this time and just blocked intermediate flow channel 37.
Upper casing 1 includes top connection 11 and upper bush 12, and central tube 2 connected screw thread with top and achieves a fixed connection, on
Sleeve 12 is achieved a fixed connection by screw thread and top connection 11, and central tube 2 is realized with upper casing 1 by screw thread and is threadedly coupled；Under
Casing 8 includes lower contact 82 and lower sleeve 81, and central tube 2 connected screw thread with following and achieves a fixed connection, and lower sleeve 81 passes through
Screw thread achieves a fixed connection with lower contact 82, and central tube 2 is realized with setting of casing 8 by screw thread and is threadedly coupled.
The valve pocket 30 that valve 3 further includes tubular is set, valve pocket 30 is set between central tube 2 and expansion pipe 5, starts cylinder chamber
36th, block cylinder chamber 35 and intermediate flow channel 37 is arranged in valve pocket 30, start cylinder chamber 36 and closure cylinder chamber 35 successively along valve
Set 30 circumferentially, using a valve pocket 30 coordinates with starting spool 32 and closure spool 31 at the same time, and starts spool 32
With closure spool 31 along valve pocket 30 circumferentially so that the whole valve 3 that sets is simple in structure, while sets valve 3 easy to handling.Start
Cylinder chamber 36 and 35 quantity of closure cylinder chamber are at least two, start cylinder chamber 36 and closure cylinder chamber 35 along between 30 circumferential direction of valve pocket
Every arrangement, start cylinder chamber 36 and coordinate with starting spool 32, closure cylinder chamber 35 coordinates with closure spool 31, so as to increase
Circulation passage of 2 inner cavity of central tube to expansion cavity 4 so that the fluid in central tube 2 can enter expansion cavity 4 faster.Also,
One startup spool 32 and a closure spool 31 cooperatively form the core component for setting valve 3, but if only one starts
Spool 32 and one closure spool 31, if start spool 32 or closure spool 31 break down, can not such as cut startup nail 34 or
Start spool 32 after closure nail 33, such as cutting startup nail 34 to be held in startup cylinder chamber 36, these situations are can be so that set
The packing failure of valve 3, it is impossible to packing is realized, therefore, in order to avoid some or certain several trigger valve cores 32 or closure spool 31 occur
Failure triggers packing failure, sets at least two to start spool 32 and at least two and blocks spool 31, thereby, it is possible to improve to set
Reliability.
30 outer surface of valve pocket sets the oriented concave recess of diametric(al), and the axis of recess along valve pocket 30 prolongs until running through valve
The wall of recess is run through in the lower face of set 30, one end of intermediate flow channel 37 so that and intermediate flow channel 37 is connected with expansion cavity 4, thus,
Intermediate flow channel 37 will not be expanded 5 inner wall of pipe in the opening that recess wall is formed and cover, so that 2 inner cavity of central tube can pass through
Intermediate flow channel 37 is communicated with expansion cavity 4.Specifically, recess can be groove, of course, it is possible to which other reach the depression of same purpose
Position, for example, valve pocket 30 includes major diameter section 391 and path section 392,392 outer surface of path section forms recess, and this scheme, makes
Obtain 30 surface of valve pocket to be easier to process, low processing cost.
Central tube 2 includes big pipeline section 23 and small pipe section 22, and valve pocket 30 is set on small pipe section 22, and the internal diameter of valve pocket 30 is less than
The outside diameter of big pipeline section 23, thus, 22 connecting portion of big pipeline section 23 and small pipe section form a step, thus valve pocket 30 be set in it is small
The step can realize valve pocket 30 axially position after on pipeline section 22, and wall valve pocket 30 moves axially on small pipe section 22, structure
Simply, positioning is reliable.
Packer further includes closure deblocking runner 6, and closure deblocking runner 6 connects closure deblocking chamber 351 and is arranged on ground
First pump pressure equipment, in this way, needed after packer setting deblocking when, start first pump pressure equipment to closure unseal runner 6
Interior pumping high-pressure fluid, high-pressure fluid enter 31 upper surface of closure deblocking chamber 351 pressure holding closure spool, the first pump pressure equipment pumping
High pressure fluid when giving the downward power of closure spool 31 and being more than the upward power that 4 cavity fluid pressure of expansion cavity is given,
Closure spool 31 moves down, and the annular groove for blocking spool 31 is connected with closure mouth 372 so that in expansion cavity 4 and central tube 2
The communicating passage of chamber is unimpeded, and the high-pressure fluid in expansion cavity 4 flows into 2 inner cavity of central tube, diminishes so as to expand the retraction diameter of pipe 5,
Realize the deblocking of packing, certainly, when unsealing at this moment, start spool 32 and be not covered with starting mouth 371.
Packer further includes startup deblocking runner 7, starts the deblocking connection of runner 7 and starts deblocking chamber 361 and be arranged on ground
The second pump pressure equipment, in this way, after removing seal for packer, start the second pump pressure equipment to starting in deblocking runner 7 and pump high pressure
Fluid, high-pressure fluid, which enters, starts 32 upper surface of deblocking chamber 361 pressure holding startup spool, the high-pressure fluid of the second pump pressure equipment pumping
When pressure gives the downward power of startup spool 32 more than the upward power that 2 cavity fluid pressure of central tube is given, start spool 32
Move down, the covering for starting spool 32 starts mouth 371 so that expansion cavity 4 and the communicating passage of 2 inner cavity of central tube are blocked, and are expanded
Chamber 4 becomes airtight chamber, and the fluid in central tube 2 can not flow to expansion cavity 4, and 4 volume of expansion cavity will not be with central tube 2
Chamber pressure changes and changes, that is to say, that 5 outside diameter of expansion pipe will not change as 2 chamber pressure of central tube changes, and be easy to
The taking-up of packer.
Since packer is all run in underground, contacted more than corrosive fluid, expansion pipe 5 is easy made of current metal
It is subject to corrosive fluid to corrode, so that packing failure, therefore, in order to further improve the packing reliability of packer, into
One step, expansion pipe 5 is provided with protective case so that expansion pipe 5 is not easy to be corroded, so as to provide the service life of expansion pipe 5 so that
Insulate better reliability.Specifically, expansion pipe 5 includes skeleton 51, internal layer 521 and outer layer 522, internal layer 521 and outer layer 522 are
Protective case, internal layer 521 are arranged on the inner side of skeleton 51, and outer layer 522 is arranged on the outside of skeleton 51, and skeleton 51 is made of metal, compares
In directly using metal tube, as expansion pipe 5, this programme causes metallic framework 51 not contacted with fluid, so as to avoid metal bone
51 being corroded property of frame is corroded, and further improves setting reliability.Specifically, the generally tubular of skeleton 51, that is, skeleton 51 is
Metal cylinder or metal tube, certainly, metallic framework 51 are to provide for the support of power, and therefore, metallic framework 51 can also be whole
The tubular net structure of body, saves material.Specifically, outer layer 522 is attached on skeleton 51 using the manufacture method of vulcanization, protect
It is more preferable to protect effect.
All any modification, equivalent and improvement made within the spirit and principles of the invention etc., should be included in
Within protection scope of the present invention.
Claims (8)
1. a kind of plunger type amplificate packer, it is characterised in that including central tube (2), expansion pipe (5), upper casing (1), trap
Pipe (8) and set valve (3), the expansion pipe (5) is set on the central tube (2), the expansion manage the both ends of (5) respectively with
The upper casing (1) is fixedly connected with setting of casing (8), and the central tube (2) both ends respectively with the upper casing (1) and under
Casing (8) is fixedly connected, and the central tube (2), upper casing (1), expansion pipe (5) and setting of casing (8) cooperatively form expansion cavity
(4),
The valve (3) that sets includes starting spool (32), starts nail (34), block spool (31), closure nail (33), start cylindricality
Chamber (36) and closure cylinder chamber (35), the startup spool (32) are fixed on the startup cylinder chamber (36) by starting nail (34)
In, and the startup cylinder chamber (36) is divided into start chamber (362) and start and unseals chamber (361) two parts, the plugging valve
Core (31) is fixed in closure cylinder chamber (35) by blocking nail (33), and the closure cylinder chamber (35) is divided into closure chamber
Chamber (351) two parts are unsealed with closure,
Flow-in hole (21) through the central tube (2) connects central tube (2) inner cavity and the startup chamber (362), described
Closure cylinder chamber (35) lower end is provided with the through hole (38) for connecting the expansion cavity (4) so that the fluid energy of the expansion cavity (4)
Enough by blocking the lower face of spool (31) described in the through hole (38) pressure holding,
Intermediate flow channel (37) is through the side wall for blocking cylinder chamber (35) and connects the startup chamber (362) and the expansion cavity
(4), and closure mouth (372) is formed in closure cylinder chamber (35) side wall and described startup cylinder chamber (36) side wall respectively and opened
Open one's mouth (371),
The startup spool (32) is activated the trigger valve covering startup mouth (371), the closure when nail (34) is fixed
The intermediate flow channel (37) is unimpeded when spool (31) is fixed by the closure nail (33), described after closure nail (33) fracture
Closure spool (31) can move the covering closure mouth (372).
2. packer according to claim 1, it is characterised in that the valve pocket (30) for setting valve (3) and further including tubular,
The valve pocket (30) is set between the central tube (2) and the expansion pipe (5), the startup cylinder chamber (36) and the envelope
Stifled cylinder chamber (35) is arranged in the valve pocket (30), both successively along the valve pocket (30) circumferentially.
3. packer according to claim 2, it is characterised in that the startup cylinder chamber (36) and the closure cylinder chamber
(35) quantity is at least two, and the startup cylinder chamber (36) and closure cylinder chamber (35) edge block cylinder chamber (35) along institute
State valve pocket (30) circumferentially-spaced arrangement.
4. packer according to claim 2, it is characterised in that valve pocket (30) outer surface sets oriented diametric(al)
Concave recess, the axis of the recess along the valve pocket (30) prolong until running through the lower face of the valve pocket (30), in described
Between runner (37) one end run through the recess wall so that intermediate flow channel (37) is connected with expansion cavity (4).
5. packer according to claim 4, it is characterised in that the valve pocket (30) includes major diameter section (391) and path
Section (392), path section (392) outer surface forms the recess.
6. packer according to claim 2, it is characterised in that the central tube (2) includes big pipeline section (23) and tubule
Section (22), the valve pocket (30) are set on the small pipe section (22), and the internal diameter of the valve pocket (30) is less than the big pipeline section
(23) outside diameter.
7. packer according to claim 1, it is characterised in that further include closure deblocking runner (6), the closure deblocking
Runner (6) the connection closure deblocking chamber (351) and the first pump pressure equipment for being arranged on ground.
8. packer according to claim 1, it is characterised in that startup deblocking runner (7) is further included, it is described to start deblocking
Runner (7) the connection second pump pressure equipment for starting deblocking chamber (361) and being arranged on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070141.0A CN107939334B (en) | 2017-11-03 | 2017-11-03 | Plunger type expansion packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070141.0A CN107939334B (en) | 2017-11-03 | 2017-11-03 | Plunger type expansion packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107939334A true CN107939334A (en) | 2018-04-20 |
| CN107939334B CN107939334B (en) | 2020-03-17 |
Family
ID=61933292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711070141.0A Active CN107939334B (en) | 2017-11-03 | 2017-11-03 | Plunger type expansion packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939334B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434428Y (en) * | 2000-04-30 | 2001-06-13 | 大庆油田有限责任公司井下作业分公司 | Hydraulic power expansion packer |
| CN2651434Y (en) * | 2003-08-23 | 2004-10-27 | 辽河石油勘探局工程技术研究院 | Small-well cracking packer |
| US20080011489A1 (en) * | 2004-11-02 | 2008-01-17 | Stinger Wellhead Protection, Inc. | Cup tool, cup tool cup and method of using the cup tool |
| US20080230224A1 (en) * | 2004-03-19 | 2008-09-25 | Tesco Corporation | Spear Type Blow Out Preventer |
| CN101498205A (en) * | 2009-02-25 | 2009-08-05 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Horizontal well washing valve blocking apparatus |
| CN201354616Y (en) * | 2009-02-24 | 2009-12-02 | 中国石油天然气股份有限公司 | Horizontal well separate injection packer |
| CN103726804A (en) * | 2014-01-13 | 2014-04-16 | 中国石油化工股份有限公司 | Hydraulic packer and mounting method thereof |
| CN103742099A (en) * | 2013-09-13 | 2014-04-23 | 中国石油集团西部钻探工程有限公司 | Perforation, fracturing, sealing and separating device |
-
2017
- 2017-11-03 CN CN201711070141.0A patent/CN107939334B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434428Y (en) * | 2000-04-30 | 2001-06-13 | 大庆油田有限责任公司井下作业分公司 | Hydraulic power expansion packer |
| CN2651434Y (en) * | 2003-08-23 | 2004-10-27 | 辽河石油勘探局工程技术研究院 | Small-well cracking packer |
| US20080230224A1 (en) * | 2004-03-19 | 2008-09-25 | Tesco Corporation | Spear Type Blow Out Preventer |
| US20080011489A1 (en) * | 2004-11-02 | 2008-01-17 | Stinger Wellhead Protection, Inc. | Cup tool, cup tool cup and method of using the cup tool |
| CN201354616Y (en) * | 2009-02-24 | 2009-12-02 | 中国石油天然气股份有限公司 | Horizontal well separate injection packer |
| CN101498205A (en) * | 2009-02-25 | 2009-08-05 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Horizontal well washing valve blocking apparatus |
| CN103742099A (en) * | 2013-09-13 | 2014-04-23 | 中国石油集团西部钻探工程有限公司 | Perforation, fracturing, sealing and separating device |
| CN103726804A (en) * | 2014-01-13 | 2014-04-16 | 中国石油化工股份有限公司 | Hydraulic packer and mounting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107939334B (en) | 2020-03-17 |
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