CN107893644A - A kind of underground hydraulic pressure control device - Google Patents
A kind of underground hydraulic pressure control device Download PDFInfo
- Publication number
- CN107893644A CN107893644A CN201710993159.1A CN201710993159A CN107893644A CN 107893644 A CN107893644 A CN 107893644A CN 201710993159 A CN201710993159 A CN 201710993159A CN 107893644 A CN107893644 A CN 107893644A
- Authority
- CN
- China
- Prior art keywords
- central tube
- ball seat
- hydraulic pressure
- ring
- control device
- 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.)
- Granted
Links
- 238000007667 floating Methods 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 230000037361 pathway Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
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)
- Check Valves (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The present invention relates to a kind of underground hydraulic pressure control device.Its technical scheme is：Connected between the middle and upper part of central tube and top connection by opening shear pin, the bottom of central tube coordinates with steel ball, the top of steel ball contacts sealing with fixed ball seat, and sealing is touched in bottom with float ball seated connection, and the bottom of the floating ball seat is fixed on by spring on the step of lower contact inner chamber；The top of the fixed ball seat contacts with closing set, the closing is placed on outer tube inner wall, the outer wall for closing set is connected by closing shear pin with outer tube inner wall, and the inwall for closing set is flexibly connected by lock ring with central tube, and the outer barrel positioned at the bottom for closing shear pin is provided with feed pathway.Its advantage is：The technique of the present invention is simple, easy for construction, shortens construction period, reduces construction cost；Well head can be realized without press operation, without Operating Pressure equipment or kill-job operation；Hydraulic pressure opening is closed, securely and reliably；With other instruments are supporting can prevent blowout.
Description
Technical field
The present invention relates to the control device during oil extraction in oil field, more particularly to a kind of underground hydraulic pressure control device.
Background technology
During oil mining, individual block strata pressure is high, and well head has overflow, and well head needs equipment with pressure to carry out
Construction operation carries out construction operation afterwards using well killing fluid kill-job；1）Well killing fluid needs density big, there is certain dirt to stratum
Metachromia；2）Using wellheadpressure equipment, cost is high, long construction period；3）Existing instrument can not realize lower oil pipe and play oil pumping
Well head is without pressure when bar, oil pipe.
The content of the invention
The purpose of the present invention is aiming at drawbacks described above existing for prior art, there is provided a kind of underground hydraulic pressure control device,
The present invention realizes well head without pressure operation, prevents blowout, simplifies constructing operation, shorten construction period, has saved work
Industry expense.
A kind of underground hydraulic pressure control device that the present invention mentions, its technical scheme are：Including top connection（1）, inside and outside connection
Passage（2）, open shear pin（5）, outer barrel（6）, central tube（7）, close shear pin（10）, lock ring（11）, feed pathway（12）, close
Set（13）, fixed ball seat（18）, steel ball（19）, floating ball seat（20）, spring（21）, lower contact（23）, the outer barrel（6）It is upper
Lower both ends are movably connected with top connection（1）And lower contact（23）, the top connection（1）Middle and lower part be provided with one group or one group with
On inside and outside communicating passage（2）, pass through inside and outside communicating passage（2）It is communicated to top connection（1）Interior central tube（7）, the center
Pipe（7）Middle and upper part and top connection（1）Between by opening shear pin（5）Connection, central tube（7）Bottom and steel ball（19）Match somebody with somebody
Close, steel ball（19）Top and fixed ball seat（18）Contact sealing, bottom and floating ball seat（20）Contact sealing, the float ball
Seat（20）Bottom pass through spring（21）It is fixed on lower contact（23）On the step of inner chamber；The fixed ball seat（18）Top with
Close set（13）Contact, it is described to close set（13）It is placed in outer barrel（6）Inwall, close set（13）Outer wall by closing shear pin（10）
With outer barrel（6）Inwall connects, and closes set（13）Inwall pass through lock ring（11）With central tube（7）It is flexibly connected, is cut positioned at closing
Nail（10）Bottom outer barrel（6）It is provided with feed pathway（12）.
Preferably, above-mentioned central tube（7）Lower end is provided with flow channels（444）, when unlatching is suppressed, liquid passes through central tube
（7）Annular space in interior central tube（111）And central tube（7）The flow channels of lower end（444）Spray to steel ball（19）, by steel ball（19）
Push.
Preferably, above-mentioned fixed ball seat（18）The inner side of bottom be provided with and steel ball（19）The arcwall face of cooperation, outside are set
There are the step and outer barrel of projection（6）Bottom support fix, the fixed ball seat（18）Middle part to be columnar structured, it is internal with
Central tube（7）Outer wall pass through the 6th O-ring（16）It is tightly connected, outside and outer barrel（6）Inwall pass through the 7th O-ring（17）
It is tightly connected.
Preferably, above-mentioned closing set（13）Outside be provided with bossing, pass through bossing and outer barrel（6）Inwall
Projection, which cooperates, fixes support closing set（13）, it is described to close set（13）Inner side be provided with two groups of grooves, upper groove installation gear
Ring（8）, low groove installation lock ring（11）, pass through baffle ring（8）For lock ring（11）It is spacing, the lock ring（11）Inside is provided with using the
One unidirectional buttless thread（888）, central tube（7）Outer wall be provided with the second unidirectional buttless thread（999）, lock ring（11）Pass through first
Unidirectional buttless thread（888）With central tube（7）The second unidirectional buttless thread（999）Coordinate, realize monodirectional locking.
Preferably, lower contact（23）Support ring is installed on the step of inner chamber（22）, by spring（21）Be supported and
It is spacing, support ring（22）It is made up of base portion and support section, the diameter of base portion is more than the external diameter of support section, passes through
Base portion and lower contact（23）The step connection of inner chamber, support section are provided with multiple 4th flow channels（777）.
Preferably, above-mentioned floating ball seat（20）Be made up of floating mount and float support cylinder, the floating mount it is upper
Portion is provided with and steel ball（19）The arcwall face of cooperation, and the external diameter of floating mount is more than the external diameter of float support cylinder, the branch of floating
Support cylinder is provided with multigroup 3rd flow channels（666）, and float support cylinder and support ring（22）On support section between be cased with
Spring（21）.
Preferably, above-mentioned floating ball seat（20）Floating mount be provided with multigroup second flow channels（555）.
The beneficial effects of the invention are as follows：The present invention suppresses 5MPa by sleeve pipe, cuts and opens shear pin, realizes that passage is opened；
15MPa is suppressed by sleeve pipe again, cuts and closes shear pin, realizes that passage is closed；Built-in steel ball realizes the sealing of passage；Pass through lock ring
Realize that passage is opened with the unidirectional buttless thread of central tube to lock；Pass through spring supporting between floating ball seat and support ring；Central tube,
Fixed ball seat, floating ball seat and support ring are respectively provided with flow channels；Central tube moves down, and top drives steel ball and realizes that passage is opened；It is logical
Road closing set drives central tube to move up and realizes that passage is closed；
The technique of the present invention is simple, easy for construction, shortens construction period, reduces construction cost；Well head can be realized without press operation,
Without Operating Pressure equipment or kill-job operation；Hydraulic pressure opening is closed, securely and reliably；With other instruments are supporting can prevent well
Spray.
Brief description of the drawings
Fig. 1 is the overall structural representation of the present invention；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is Fig. 1 B-B sectional views；
Fig. 4 is Fig. 1 C-C sectional views；
Fig. 5 is Fig. 1 D-D sectional views；
Fig. 6 is Fig. 1 E-E sectional views；
Fig. 7 is the unidirectional buttless thread partial enlarged drawing of lock ring at the unidirectional buttless thread partial enlarged drawing of central tube at F in Fig. 1 and G；
In upper figure：Top connection 1, inside and outside communicating passage 2, the first O-ring 3, the second O-ring 4, unlatching shear pin 5, outer barrel 6, central tube
7th, baffle ring 8, the 3rd O-ring 9, closing shear pin 10, lock ring 11, feed pathway 12, closing the 13, the 4th O-ring the 14, the 5th of set are O-shaped
Enclose the 15, the 6th O-ring 16, the 7th O-ring 17, fixed ball seat 18, steel ball 19, floating ball seat 20, spring 21, support ring 22, under
Joint 23,
Annular space 111, annular space 222, the 333, first flow channels 444 of opening, the second flow channels 555, the 3rd excessively stream in central tube
Passage 666, the 4th flow channels 777, the first unidirectional buttless thread 888, the second unidirectional buttless thread 999.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Embodiment 1：Referring to the drawings 1, a kind of underground hydraulic pressure control device for mentioning of the present invention, its technical scheme is：Including
Top connection 1, inside and outside communicating passage 2, open shear pin 5, outer barrel 6, central tube 7, closing shear pin 10, lock ring 11, feed pathway 12, pass
Set 13, fixed ball seat 18, steel ball 19, floating ball seat 20, spring 21, lower contact 23 are closed, the upper and lower ends of the outer barrel 6 are lived respectively
Dynamic connection top connection 1 and lower contact 23, the middle and lower part of the top connection 1 are provided with communicating passage 2 inside and outside six groups, pass through inside and outside connection
Passage 2 is communicated to the central tube 7 in top connection 1, is connected between the middle and upper part of the central tube 7 and top connection 1 by opening shear pin 5
Connect, bottom and the steel ball 19 of central tube 7 coordinate, and the top of steel ball 19 contacts sealing, bottom and floating ball seat with fixed ball seat 18
20 contact sealings, the bottom of the floating ball seat 20 is fixed on by spring 21 on the step of the inner chamber of lower contact 23；The fixation
The top of ball seat 18 contacts with closing set 13, and the set 13 of closing is placed in the inwall of outer barrel 6, and the outer wall for closing set 13 is cut by closing
Nail 10 is connected with the inwall of outer barrel 6, and the inwall for closing set 13 is flexibly connected by lock ring 11 with central tube 7, positioned at closing shear pin 10
The outer barrel 6 of bottom be provided with feed pathway 12.
Referring to the drawings 2, the lower end of central tube 7 is provided with flow channels 444, opens when suppressing, and liquid is by central tube 7
The flow channels 444 of annular space 111 and the lower end of central tube 7 spray to steel ball 19 in heart pipe, and steel ball 19 is pushed.
Referring to the drawings 1,5 and 6, the inner side of the bottom of fixed ball seat 18 of the invention is provided with the arc coordinated with steel ball 19
Face, the bottom support that outside is provided with raised step and outer barrel 6 are fixed, the middle part of the fixed ball seat 18 be it is columnar structured,
The internal outer wall with central tube 7 is tightly connected by the 6th O-ring 16, outside close by the 7th O-ring 17 with the inwall of outer barrel 6
Envelope connection.
Referring to the drawings 1 and 4, the outside of closing set 13 of the invention is provided with bossing, by bossing and outer barrel 6
Set 13 is closed in the raised fixed support that cooperates of wall, and the inner side for closing set 13 is provided with two groups of grooves, upper groove installation gear
Ring 8, low groove installation lock ring 11, it is that lock ring 11 is spacing by baffle ring 8, the inside of lock ring 11, which is provided with, uses the first unidirectional sawtooth
Screw thread 888, the outer wall of central tube 7 are provided with the second unidirectional buttless thread 999, lock ring 11 by the first unidirectional buttless thread 888 with
Second unidirectional buttless thread 999 of central tube 7 coordinates, and realizes monodirectional locking.
Referring to the drawings 1, support ring 22 is installed on the step of the inner chamber of lower contact 23, by the way that spring 21 is supported and limited
Position, support ring 22 are made up of base portion and support section, and the diameter of base portion is more than the external diameter of support section, passes through base
Part is connected with the step of the inner chamber of lower contact 23, and support section is provided with multiple 4th flow channels 777.
Referring to the drawings 1, floating ball seat 20 of the invention is made up of floating mount and float support cylinder, the floating mount
Top is provided with the arcwall face coordinated with steel ball 19, and the external diameter of floating mount is more than the external diameter of float support cylinder, the branch of floating
Support cylinder is provided with multigroup 3rd flow channels 666, and is cased with spring between the support section on float support cylinder and support ring 22
21。
Referring to the drawings 6, the floating mount of floating ball seat 20 of the invention is provided with multigroup second flow channels 555.
Referring to the drawings 1, the outer wall middle part of central tube 7 of the invention is provided with spacing preiection, passes through spacing preiection and top connection 1
Bottom be engaged；The stop that the diameter of the central tube 7 is more than the top of top connection 1 is raised, make central tube 7 top connection,
Moved in cavity between outer barrel and lower contact.
A kind of application method for underground hydraulic pressure control device that the present invention mentions, comprises the following steps：
（a）Under connecting pipe lower going-into-well：Oil well pump lower end is connected to by top connection 1, ball-and-seat is connected by lower contact 23, under
After entering the design attitude under pumpingh well, fixed well head；
（b）Passage opening process：Sleeve pipe out of pumpingh well suppresses 5MPa, and hydraulic pressure is entered by communicating passage inside and outside top connection 2
Annular space 111 in annular space 222 and central tube between top connection 1 and central tube 7, hydraulic action promote on the upper surface of central tube 7
Central tube 7 is descending, cuts short and opens shear pin 5, and the lower end of central tube 7 promotes steel ball 19, and steel ball 19 drives the compression spring of floating ball seat 20
21, the unidirectional buttless thread 999 of lock ring 11 and the unidirectional buttless thread 888 of central tube 7 realize monodirectional locking, locking rear center pipe（7）
It can not move up again, passage, which is opened, to be completed, and realizes that tubing string connects up and down；
（c）Passage closing process：The anterior cannula of lift pipe string suppresses 15MPa, and hydraulic pressure is entered by feed pathway 12, and hydraulic action exists
13 lower surfaces of set are closed, promotes closing to cover 13 up cut and closes pin 10, close and cover 13 promotion lock rings 11 and baffle ring 8, pass through
Lock ring 11 drives central tube 7 to move up together, and steel ball 19 is left in the lower surface of central tube 7, and steel ball 19 promotes under the action of the spring 21
The 20 up reset of floating ball seat, steel ball 19 realize and sealed that passage is closed with fixed ball seat 18, without pressure in tubing string after passage is closed
Power, well head can be carried out without pressure lift pipe string operation.
Embodiment 2, a kind of underground hydraulic pressure control device that the present invention that mentions of the present invention mentions, it is different from embodiment 1 it
Place is that the middle and lower part of top connection 1 is provided with communicating passage 2 inside and outside three groups, is communicated to by inside and outside communicating passage 2 in top connection 1
Central tube 7, in addition, steel ball 19 replaces with Ceramic Balls, there is the advantages of anticorrosive wear-resistant, the recycling of product can be improved
Time, increase the service life.
It is described above, only it is the part preferred embodiment of the present invention, any those skilled in the art may profit
Equivalent technical scheme is changed or is revised as with the technical scheme of above-mentioned elaboration.Therefore, the technology according to the present invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (7)
1. a kind of underground hydraulic pressure control device, it is characterized in that：Including top connection（1）, inside and outside communicating passage（2）, open shear pin
（5）, outer barrel（6）, central tube（7）, close shear pin（10）, lock ring（11）, feed pathway（12）, close set（13）, fixed ball seat
（18）, steel ball（19）, floating ball seat（20）, spring（21）, lower contact（23）, the outer barrel（6）Upper and lower ends respectively activity
Connect top connection（1）And lower contact（23）, the top connection（1）Middle and lower part lead to provided with a group or more of inside and outside connections
Road（2）, pass through inside and outside communicating passage（2）It is communicated to top connection（1）Interior central tube（7）, the central tube（7）Middle and upper part with
Top connection（1）Between by opening shear pin（5）Connection, central tube（7）Bottom and steel ball（19）Coordinate, steel ball（19）Top
With fixed ball seat（18）Contact sealing, bottom and floating ball seat（20）Contact sealing, the floating ball seat（20）Bottom pass through
Spring（21）It is fixed on lower contact（23）On the step of inner chamber；The fixed ball seat（18）Top with close cover（13）Contact,
It is described to close set（13）It is placed in outer barrel（6）Inwall, close set（13）Outer wall by closing shear pin（10）With outer barrel（6）Inwall connects
Connect, close set（13）Inwall pass through lock ring（11）With central tube（7）It is flexibly connected, positioned at closing shear pin（10）Bottom it is outer
Cylinder（6）It is provided with feed pathway（12）.
2. underground hydraulic pressure control device according to claim 1, it is characterized in that：The central tube（7）Lower end is provided with excessively stream
Passage（444）, when unlatching is suppressed, liquid passes through central tube（7）Annular space in interior central tube（111）And central tube（7）Lower end
Flow channels（444）Spray to steel ball（19）, by steel ball（19）Push.
3. underground hydraulic pressure control device according to claim 1, it is characterized in that：The fixed ball seat（18）Bottom it is interior
Side is provided with and steel ball（19）The arcwall face of cooperation, outside are provided with raised step and outer barrel（6）Bottom support fix, it is described solid
Determine ball seat（18）Middle part to be columnar structured, internal and central tube（7）Outer wall pass through the 6th O-ring（16）It is tightly connected,
Outside and outer barrel（6）Inwall pass through the 7th O-ring（17）It is tightly connected.
4. underground hydraulic pressure control device according to claim 1, it is characterized in that：Described closing set（13）Outside be provided with
Bossing, pass through bossing and outer barrel（6）Set is closed in the raised fixed support that cooperates of inwall（13）, it is described to close set
（13）Inner side be provided with two groups of grooves, upper groove installation baffle ring（8）, low groove installation lock ring（11）, pass through baffle ring（8）For lock ring
（11）It is spacing, the lock ring（11）Inside is provided with and uses the first unidirectional buttless thread（888）, central tube（7）Outer wall be provided with the
Two unidirectional buttless threads（999）, lock ring（11）Pass through the first unidirectional buttless thread（888）With central tube（7）The second unidirectional saw
Tooth thread（999）Coordinate, realize monodirectional locking.
5. underground hydraulic pressure control device according to claim 1, it is characterized in that：Lower contact（23）Installed on the step of inner chamber
Support ring（22）, by spring（21）It is supported and spacing, support ring（22）It is made up of base portion and support section, bottom
The diameter of seating portion is more than the external diameter of support section, passes through base portion and lower contact（23）The step connection of inner chamber, supporting part
It is arranged with multiple 4th flow channels（777）.
6. underground hydraulic pressure control device according to claim 5, it is characterized in that：Described floating ball seat（20）By floating bottom
Seat and float support cylinder composition, the top of the floating mount is provided with and steel ball（19）The arcwall face of cooperation, and floating mount
External diameter is more than the external diameter of float support cylinder, and the float support cylinder is provided with multigroup 3rd flow channels（666）, and float support
Cylinder and support ring（22）On support section between be cased with spring（21）.
7. underground hydraulic pressure control device according to claim 6, it is characterized in that：Described floating ball seat（20）Floating bottom
Seat is provided with multigroup second flow channels（555）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993159.1A CN107893644B (en) | 2017-12-27 | 2017-12-27 | Underground hydraulic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993159.1A CN107893644B (en) | 2017-12-27 | 2017-12-27 | Underground hydraulic control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107893644A true CN107893644A (en) | 2018-04-10 |
| CN107893644B CN107893644B (en) | 2020-01-21 |
Family
ID=61803705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710993159.1A Active CN107893644B (en) | 2017-12-27 | 2017-12-27 | Underground hydraulic control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107893644B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322640A (en) * | 2018-12-11 | 2019-02-12 | 山东博赛特石油技术有限公司 | A kind of hydraulic packing linker |
| CN110905447A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Underground switch device |
| CN111677480A (en) * | 2020-06-04 | 2020-09-18 | 大庆油田有限责任公司 | Double-acting control valve for casing patching |
| CN110821438B (en) * | 2019-12-09 | 2024-04-05 | 天津轻工职业技术学院 | Blowout preventer for rod-driven screw pump oil extraction system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451730Y (en) * | 2000-09-29 | 2001-10-03 | 胜利石油管理局采油工艺研究院 | Hydraulic seam change switch |
| CN2679356Y (en) * | 2004-03-01 | 2005-02-16 | 赵广友 | Chemical agent injection underground unidirectional flow control device |
| CN201513157U (en) * | 2009-09-04 | 2010-06-23 | 中国石油天然气集团公司 | Inverse well-flushing double seal check valve |
| US20120312557A1 (en) * | 2011-06-09 | 2012-12-13 | King James G | Sleeved ball seat |
| WO2015167757A1 (en) * | 2014-04-29 | 2015-11-05 | Baker Hughes Incorporated | Selectively operated two way check valve for subterranean use |
| CN205778715U (en) * | 2016-04-15 | 2016-12-07 | 吴江 | One-way hydraulic formula is exempted to bore fraclional well cementing device |
| CN206190265U (en) * | 2016-11-25 | 2017-05-24 | 山东创佳石油机械制造有限公司 | Empty core rod water mixing single current valve |
-
2017
- 2017-12-27 CN CN201710993159.1A patent/CN107893644B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451730Y (en) * | 2000-09-29 | 2001-10-03 | 胜利石油管理局采油工艺研究院 | Hydraulic seam change switch |
| CN2679356Y (en) * | 2004-03-01 | 2005-02-16 | 赵广友 | Chemical agent injection underground unidirectional flow control device |
| CN201513157U (en) * | 2009-09-04 | 2010-06-23 | 中国石油天然气集团公司 | Inverse well-flushing double seal check valve |
| US20120312557A1 (en) * | 2011-06-09 | 2012-12-13 | King James G | Sleeved ball seat |
| WO2015167757A1 (en) * | 2014-04-29 | 2015-11-05 | Baker Hughes Incorporated | Selectively operated two way check valve for subterranean use |
| CN205778715U (en) * | 2016-04-15 | 2016-12-07 | 吴江 | One-way hydraulic formula is exempted to bore fraclional well cementing device |
| CN206190265U (en) * | 2016-11-25 | 2017-05-24 | 山东创佳石油机械制造有限公司 | Empty core rod water mixing single current valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905447A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Underground switch device |
| CN109322640A (en) * | 2018-12-11 | 2019-02-12 | 山东博赛特石油技术有限公司 | A kind of hydraulic packing linker |
| CN109322640B (en) * | 2018-12-11 | 2023-12-22 | 山东博赛特石油技术有限公司 | Hydraulic packing communicating vessel |
| CN110821438B (en) * | 2019-12-09 | 2024-04-05 | 天津轻工职业技术学院 | Blowout preventer for rod-driven screw pump oil extraction system |
| CN111677480A (en) * | 2020-06-04 | 2020-09-18 | 大庆油田有限责任公司 | Double-acting control valve for casing patching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107893644B (en) | 2020-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107893644A (en) | A kind of underground hydraulic pressure control device | |
| CN102979495B (en) | Many bunches of Limited entry fracturing tubing strings of open-hole horizontal well and fracturing process thereof | |
| CN206693997U (en) | A kind of oil field is every excavating technology tubing string | |
| CN106437605B (en) | A kind of packer | |
| CN101929318A (en) | Stage cementing device | |
| CN101975042B (en) | Fully functional anti-spouting oil drain device | |
| CN106761577A (en) | A kind of oil field is every excavating technology tubing string | |
| CN101949274A (en) | Casing shut-in valve for cementing operation | |
| CN205012951U (en) | Novel hydraulic anchor | |
| CN209163779U (en) | A kind of hydraulic packing linker | |
| RU128896U1 (en) | DEVICE FOR TRANSFER OF WELLS, INCLUDING WATERFILLED, TO OPERATION ON TWO LIFT COLUMNS | |
| RU2339788C1 (en) | Horizontal well control equipment | |
| CN107387017A (en) | Draining type double leather cup reservoir protector | |
| CN201071701Y (en) | Hydraulic blocking device of oil pipe | |
| CN107503711A (en) | A kind of cased hole completion arrow type back-pressure valve and method | |
| CN208816087U (en) | A kind of Operating Pressure blowout prevention valve | |
| CN209586346U (en) | A kind of bet orchestration of the two-tube water injection technological string of blowout prevention | |
| CN203230386U (en) | Outer sliding sleeve type oil drain device | |
| CN101614202B (en) | Double-deck defueling pump | |
| CN206917629U (en) | A kind of gradually deblocking packer of low deblocking load | |
| SU1063985A2 (en) | Well cutting-off arrangement | |
| CN205477514U (en) | Biliquid jar packer for fracturing | |
| CN104234659B (en) | Exempt to bore fraclional well cementing device | |
| CN205778710U (en) | A kind of packer | |
| CN217106894U (en) | Sand washing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |