CN110029974A - A kind of prefastening Regulable constant current stopper - Google Patents
A kind of prefastening Regulable constant current stopper Download PDFInfo
- Publication number
- CN110029974A CN110029974A CN201910453241.4A CN201910453241A CN110029974A CN 110029974 A CN110029974 A CN 110029974A CN 201910453241 A CN201910453241 A CN 201910453241A CN 110029974 A CN110029974 A CN 110029974A
- Authority
- CN
- China
- Prior art keywords
- regulating valve
- spool
- main body
- valve rod
- face
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000001105 regulatory effect Effects 0.000 claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 abstract description 29
- 239000007924 injection Substances 0.000 abstract description 29
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000000243 solution Substances 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
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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)
- Lift Valve (AREA)
- Nozzles (AREA)
Abstract
A kind of prefastening Regulable constant current stopper.Main purpose is to solve the problems such as flow adjustment range existing for existing Regulable constant current stopper is small, control precision is low.Including fishing rod, upper cover, spring, blanking plug main body, cam, pin, valve rod, adjusting nut, primary seal circle, main spring, spool, regulating valve, regulating valve seat and strainer；Injection water enters blanking plug by the bottom outlet of valve seat through strainer and passes through regulating valve, spool injection stratum again, due to reaching balance due to spool can move back and forth under the action of the change of injection pressure or strata pressure and spring force in blanking plug main body, constant-current water injection finally can be achieved.The present invention is mainly to pass through the initial compression amount of the aperture and main spring that adjust adjustable valve to change into the flow of blanking plug and the elastic force of spring to realize that the flow in strata pressure or injection water pressure variation is constant, is suitable for seperated layer water injection and recovers the oil.
Description
Technical field
The present invention relates to a kind of downhole tools applied in oil-gas field development field, are that a kind of underground can specifically
Adjustable type constant flow fills the water blanking plug.
Background technique
To further increase oil recovery factor, the water injection technology in secondary oil recovery has become a kind of important hand of oil field development
Section.So far, oil field at home mostly enters high water-cut development period, fills the water volume to increase, and improves oil recovery factor, water filling
Work is increasingly taken seriously.Blanking plug is the important component of separate zone waterflooding technology, and blanking plug is mainly interchangeable water nozzle at present
It is universal, it is required to select suitable water nozzle according to water injection rate, underground is thrown into after installation and is seated in eccentric injection mandrel seating nipple side opening.
In the ideal situation, water injection rate can reach requirement.But when operation conditions change, such as: water-injection station is arrived through pipe network system
Water injection pressure up to water injection well changes, and oilbearing stratum water filling stressor layer complicated and changeable changes, and at this moment flow is not just
It is constant again.Launch-work repeatedly is needed to replace water nozzle to reach expected water injection rate, is increased cost, is reduced oil exploitation rate.
For this purpose, applicant proposed a kind of adjustable constant-current water injection blanking plugs of patent No. 201810516322X.But it is this stifled
Filling in device, there is also shortcomings, that is: lead to this blanking plug flow adjustment range since same spring constant flow range is small
It is small, flow control accuracy is low.
Summary of the invention
In order to solve the technical problems mentioned in the background art, the present invention provides a kind of prefastening adjustable constant-flow blocking
Device, this kind of prefastening Regulable constant current stopper carry out relationship by changing the aperture of main spring initial compression amount and adjustable valve
Match, valve core structure is optimized, flow degree of regulation is higher, and adjustable range is bigger, enables spool under different flows
Constant current is realized with the spring balancing of same rigidity.
The technical scheme is that this kind of prefastening Regulable constant current stopper, including fishing rod 1, unique distinction exists
In: the blanking plug further includes upper cover 2, upper cover sealing ring 3, spring 4, blanking plug main body 5, cam 6, pin 7, valve rod 8, adjusts
Nut 9, primary seal circle 10, main spring 11, spool 12, regulating valve 13, regulating valve seat 14 and strainer 15.
Wherein, the interior hexangle type emptying aperture that there is fishing rod 1 cylindrical surface 101, rotary table 102, rotary table bottom surface 103 and lower part to open
104。
Blanking plug main body 5 successively offer Cavity surface 52, pin hole 53, cam groove face 54, internal screw thread 55, apopore 56, under
Connection structure 57, internal screw thread 55 are connected through a screw thread with adjusting nut 9, and pin passes through pin hole 53 and the centre bore 62 of cam carries out
Fixed, lower connection structure 57 is threadedly coupled with strainer 151.
The middle part of cam 6 is hollow structure, has upper plane 61, centre bore 62 and outerplanar 63, valve rod 8 can be enable to wear
The rotation that cam is generated without influencing cam itself when injector pulling is locking is crossed, i.e. the respective rotation of cam and valve rod is mutual not
It influences.
The top of valve rod 8 is regular hexagon bar 81, cooperates 104 with the interior hexagonal emptying aperture of fishing rod 1, top exists after cooperation
Certain interval can be such that valve rod slides up and down in emptying aperture and circumferentially fixed cannot rotate；It is cylindrical bar 82 in the middle part of valve rod, with
122 clearance fit of spool, lower part are a bit of to offer externally threaded cylindrical bar 83 and be threadedly coupled with regulating valve 131.
Adjusting nut 9 is the cylinder of a boring, has regular hexagonal prism hollow hole 91, external screw-thread face 92 and bottom surface
93；Regular hexagonal prism hollow hole 91 and 81 clearance fit of valve rod enable adjusting nut to rotate and slide up and down with valve rod, external screw-thread
Face 92 is threadedly engaged with main body 55, so that adjusting nut is carried out upper and lower displacement with rotation, main spring 11 is pushed down in bottom surface 93.
Spool 12 have small cylindrical surface 121, center hole face 122, boss face 123, sliding surface 124 and faying face 125 and
Rectangular channel 1201,123 lower part two sides of inner top surface are provided with along 1202 symmetrical two rectangle effluent troughs 1201 of the plane of symmetry, the rectangle
It is consistent with blanking plug main body 5 water outlet, 56 diameters to be discharged groove height；Sliding surface 124 and water filling 5 internal surface gaps of blanking plug main body
Cooperation, enables spool to slide up and down, and center hole face 122 and 82 clearance fit of valve rod enable spool to move up and down and inject water energy
The epicoele that injector main body and spool formation are flowed by gap, disposes main spring between boss face 123 and adjusting nut 9
11。
Regulating valve 13 is cylindrical body, has upper flank 131, external screw thread face 132 and bottom surface 133；In 13 upper end of regulating valve
It is provided with cylindrical thread slot at the heart, matches with the cylindrical thread bar of 83 tail portion of valve rod and merges and can be rotated with valve rod；Under regulating valve 13
End is provided with the rectangle two sides of certain depth through slot 1301, and the rectangle two sides are concentric through slot and regulating valve, thread rotary orientation
It must be opposite with adjusting nut.
Regulating valve seat 14 has threaded hole 141, small periphery 142, round table surface 143 and bottom surface 144；Outside regulating valve seat 14
Portion is the cylinder with two layers of step, and round-meshed cylinder table is opened centered on lower end, is the sky with step on round table surface 143
Heart cylinder is provided with internal thread hole 141 inside it and matches with regulating valve 132；The blocked device main body in assembly of round table surface 143
Lower end is pushed down, and fixed function is played.
Strainer 15 has inner threaded surface 151, inner wall 152 and bottom surface 153；Bottom surface 153 and regulating valve seat 144 cooperate, interior
Flank is threadedly coupled with main body 57.
The invention has the following beneficial effects: elastic force and spool institutes that traditional constant flow blanking plug its constant current principle is spring
The fluid pressure balance received realizes constant current.But if changing its water nozzle size, and then flow changes, it is difficult that spool stress changes again
Reach balance with the spring with same operating, is just no longer able to achieve constant current.And technical solution proposed by the invention will inject water
Blanking plug is entered by the bottom outlet of regulating valve seat through strainer and passes through regulating valve, spool injection stratum again.Since spool can be stifled in water filling
Moving back and forth under the action of the change of plug device main body internal cause injection pressure or strata pressure and spring force may ultimately reach balance,
Constant-current water injection can be achieved.If injection flow changes or the flow of strata pressure injection water when changing is not just constant, this
When can rotate aperture and the position control of adjusting nut of the fishing rod to adjust regulating valve by measurement and adjustment instrument and enter blanking plug
Flow and spring initial compression amount, realize adjustable constant-flow water filling.
The present invention, instead of pervious fixed water nozzle, can be changed simultaneously using adjustable valve in the aperture that underground changes regulating valve
Become spring initial compression amount made with changing the elastic force of spring suffered by spool spool be able to achieve under different water injection rates with together
One spring reaches balance (changing the screw pitch between regulating valve and valve seat and main body and adjusting nut connection than can be achieved), and square
Shape valve is linear compared with the change of the decrement of spring, easily studied calculating, easy to operate, save the cost, realizes that underground is adjustable
Constant-current water injection can effectively improve oil recovery.
Detailed description of the invention:
Attached drawing 1 is structure sectional view of the invention
Attached drawing 2 is three-dimensional structure cross-sectional view of the invention
Attached drawing 3 is three-dimensional structure explosion map of the invention
Attached drawing 4 is fishing rod three-dimensional structure part drawing of the invention
Attached drawing 5 is upper cover three-dimensional structure part drawing of the invention
Attached drawing 6 is blanking plug main body three-dimensional structure part drawing of the invention
Attached drawing 7 is valve rod three-dimensional structure part drawing of the invention
Attached drawing 8 is the three-dimensional structure part drawing of cam of the invention
Attached drawing 9 is the three-dimensional structure part drawing of adjusting nut of the invention
Attached drawing 10 is main spring three-dimensional structure part drawing of the invention
Attached drawing 11 is spring three-dimensional structure part drawing of the invention
Attached drawing 12 is the constitutional detail figure of spool of the invention
Attached drawing 13 is the three-dimensional structure part drawing of regulating valve of the invention
Attached drawing 14 is regulating valve seat three-dimensional structure part drawing of the invention
Attached drawing 15 is strainer three-dimensional structure part drawing of the invention
1- fishing rod in figure, 2- upper cover, 3- upper cover sealing ring, 4- spring, 5- blanking plug main body, 6- cam, 7- pin, 8- valve
Bar, 9- adjusting nut, 10- primary seal circle, 11- main spring, 12- spool, 13- regulating valve, 14- regulating valve seat, 15- strainer.
Specific embodiment:
The present invention will be further explained below with reference to the attached drawings:
In conjunction with Fig. 1-Figure 15, it is known that:
Fishing rod 1 by cylindrical surface 101, rotary table 102, rotary table bottom surface 103 and the interior hexangle type emptying aperture 104 opened of lower part form.
Blanking plug main body 5 successively offer Cavity surface 52, pin hole 53, cam groove face 54, internal screw thread 55, apopore 56, under
Connection structure 57, internal screw thread 55 are connected through a screw thread with adjusting nut 92, and cam 62 is fixed on main body by pin by pin hole 53
On, lower connection structure 57 is threadedly coupled with strainer 151.
It is hollow structure that cam 6, which is in the middle part of hollow structure, that is, cam, by 63 structure of upper plane 61, centre bore 62 and outerplanar
At, valve rod 8 can be enable to pass through cam without influencing the rotation that generates when injector pulling is locking of cam itself, i.e., cam with
The respective rotation of valve rod is independent of each other.
The top of valve rod 8 is regular hexagon bar 81, cooperates 104 with the interior hexagonal emptying aperture of fishing rod 1, top exists after cooperation
Certain interval can be such that valve rod slides up and down in emptying aperture and circumferentially fixed cannot rotate；It is cylindrical bar 82 in the middle part of valve rod, with
122 clearance fit of spool, lower part are a bit of to offer externally threaded cylindrical bar 83 and be threadedly coupled with regulating valve 131.
Adjusting nut 9 is the cylinder of a boring, including regular hexagonal prism hollow hole 91, external screw-thread face 92 and bottom surface
93 are constituted.Regular hexagonal prism hollow hole 91 and 81 clearance fit of valve rod enable adjusting nut to rotate and slide up and down with valve rod, external
Flank 92 is threadedly engaged with main body 55, so that adjusting nut is carried out upper and lower displacement with rotation, main spring 11 is pushed down in bottom surface 93.
Spool 12 is made of small cylindrical surface 121, center hole face 122, boss face 123, sliding surface 124 and faying face 125.Its
Substantially two different hollow cylinders of diameter are combined, and small diameter cylinders are in upper end, and 123 lower part of inner top surface is provided with two
The symmetrical two rectangle effluent troughs in side, water outlet groove height are consistent with blanking plug main body 5 water outlet, 56 diameters.Spool 124 and water filling
The cooperation of 5 internal surface gaps of blanking plug main body, enables spool to slide up and down, and center hole face 122 and 82 clearance fit of valve rod make spool
The epicoele that water energy flows into injector main body by gap and spool is formed can be moved up and down and be injected, in boss face 123 and is adjusted
Main spring is disposed between nut 9.
Regulating valve 13 is made of upper flank 131, external screw thread face 132 and bottom surface 133, is substantially that outer surface is provided with external screw thread
132 cylindrical body is provided with cylindrical thread slot at upper end center, with the cylindrical thread bar of 83 tail portion of valve rod with merge can be with valve
Bar rotation；Lower end is provided with the rectangle two sides of certain depth through slot 1301, and rectangular channel is concentric with regulating valve.
Regulating valve seat 14 is made of threaded hole 141, small periphery 142, round table surface 143 and bottom surface 144.Outside has 2 layers
The cylinder of step opens round-meshed cylinder table centered on lower end, is the hollow cylinder with step on round table surface 143, at it
Inside is provided with internal thread hole 141 and matches with regulating valve 132.The blocked device lower body in assembly of round table surface 143 is pushed down, and is risen
Fixed function.
Strainer 15 is by inner threaded surface 151, inner wall 152 and bottom surface 153.Bottom surface 153 and regulating valve 144 cooperate, internal screw thread
Face is threadedly coupled with main body 57.
The lower part in fishing rod 1 is provided with interior hexangle type emptying aperture 104 and matches with valve rod 81, fishing rod 101 with it is upper
201 clearance fit of lid disposes spring 4 between rotary table 102 and inner top surface 203, rotary table bottom surface 103 is in contact with upper plane 61；On
Upper cover sealing ring is disposed at lid groove 202, upper cover flank 204 is threadedly coupled with Cavity surface 52 in blanking plug main body；Blanking plug master
Body cam groove face 54 is parallel with cam outerplanar 63 to install and has gap, is able to rotate cam, and centre bore 62 is pin hole, uses pin
Cam is fixed in blanking plug main body by nail, i.e., in two sides using 2 pin installations, pin is not passed through cam center, internal screw thread
It is equipped with screw thread at 55 to be threadedly coupled with adjusting nut external screw-thread face 92, disposes main spring, lower connection structure in 93 lower end of bottom surface
57 are threadedly coupled with strainer inner threaded surface 151, and 5 inner wall of main body and 124 clearance fit of spool sliding surface enable to move down on spool
It is dynamic,；Valve rod external screw thread cylindrical bar 83 is threadedly coupled with flank 131 in adjustable valve, and adjustable valve is enable to rotate with valve rod；It is cylindrical
Bar 82 and 122 clearance fit of center hole face, enable spool to slide up and down by axis of bar；Strainer bottom surface 153 and regulating valve seat bottom surface
144 link together, and regulating valve external screw thread face 132, by being threadedly engaged, enables spool with valve rod with regulating valve seat threaded hole 141
Simultaneously upper and lower displacement is rotated, and the thread rotary orientation that its thread rotary orientation must cooperate with main body and adjusting nut is on the contrary, 143 quilt of round table surface
The lower end of blanking plug main body, which is pushed down, is fixed on it in lower cover.
In use, injection water is entered through strainer by the bottom outlet of valve seat, blanking plug passes through regulating valve again, spool injects stratum.By
Due to spool can move back and forth under the action of the change of injection pressure or strata pressure and spring force in blanking plug main body
Reach balance, constant-current water injection finally can be achieved.The present invention is mainly to pass through the initial pressure of the aperture and main spring that adjust adjustable valve
Contracting amount is to change into the flow of blanking plug and the elastic force of spring to realize in strata pressure or injection water pressure variation
Flow is constant, is suitable for seperated layer water injection and recovers the oil.
Spool is discharged by the way of the water outlet of two sides rectangular slot instead of pervious four hole, spool when blanking plug works
There can be rotary motion in main body, rectangle effluent trough can make injection flow more stable, improve flow control accuracy；Exist simultaneously
Adjusting nut is increased in main body the initial compression amount of spring is adjusted, can increase the adjustable of the constant current flow of blanking plug
Range, and the structure of existing blanking plug can only carry out small-scale flow adjusting, together using being matched with a certain rigid spring
When can make blanking plug, and realization flow is constant under the action of same rigid spring in big flow adjustable range.
In conclusion the prefastening adjustable constant-flow that this kind is applied to separated-zone water infection oil field fills the water blanking plug, note can be adjusted
It is stifled to be able to solve previous adjustable constant-flow to the device of constant control injection flow for water water nozzle aperture and main spring initial compression amount
Fill in the problems such as flow adjustment range is small, flow control accuracy is low existing for device.
Claims (1)
1. a kind of prefastening Regulable constant current stopper, including fishing rod (1), it is characterised in that: the blanking plug further includes upper cover
(2), upper cover sealing ring (3), spring (4), blanking plug main body (5), cam (6), pin (7), valve rod (8), adjusting nut (9),
Primary seal circle (10), main spring (11), spool (12), regulating valve (13), regulating valve seat (14) and strainer (15)；
Wherein, the interior hexangle type that there is fishing rod (1) cylindrical surface (101), rotary table (102), rotary table bottom surface (103) and lower part to open
Emptying aperture (104)；
Blanking plug main body (5) successively offers Cavity surface (52), pin hole (53), cam groove face (54), internal screw thread (55), apopore
(56), lower connection structure (57), internal screw thread (55) are connected through a screw thread with adjusting nut (9), and pin passes through pin hole (53) and convex
The centre bore (62) of wheel is fixed, and lower connection structure (57) is threadedly coupled with strainer (151)；
Cam is hollow structure in the middle part of (6), has upper plane (61), centre bore (62) and outerplanar (63), can make valve rod
(8) rotation that cam is generated without influencing cam itself when injector pulling is locking can be passed through, i.e. cam and valve rod is respective
Rotation is independent of each other；
The top of valve rod (8) is regular hexagon bar (81), cooperates (104) with the interior hexagonal emptying aperture of fishing rod (1), top after cooperation
Valve rod can be made to slide up and down in emptying aperture there are certain interval and circumferentially fixed cannot rotated；It is cylindrical bar in the middle part of valve rod
(82), with spool (122) clearance fit, lower part offers externally threaded cylindrical bar (83) and regulating valve (131) spiral shell to be a bit of
Line connection；
Adjusting nut (9) is the cylinder of a boring, has regular hexagonal prism hollow hole (91), external screw-thread face (92) and bottom
Face (93)；Regular hexagonal prism hollow hole (91) and valve rod (81) clearance fit enable adjusting nut to rotate and slide up and down with valve rod,
External screw-thread face (92) is threadedly engaged with main body (55), and adjusting nut is enable to carry out upper and lower displacement, bottom surface (93) pressure with rotation
Firmly main spring (11)；
Spool (12) has small cylindrical surface (121), center hole face (122), boss face (123), sliding surface (124) and faying face
(125) and rectangular channel (1201), inner top surface (123) lower part two sides are provided with along the symmetrical two rectangles water outlet of the plane of symmetry (1202)
Slot (1201), the rectangle water outlet groove height are consistent with blanking plug main body (5) water outlet (56) diameter；Sliding surface (124) and note
The cooperation of water slug device main body (5) internal surface gaps, enables spool to slide up and down, center hole face (122) is matched with valve rod (82) gap
It closes, spool is enable to move up and down and injects the epicoele that water energy flows into injector main body by gap and spool is formed, in boss face
(123) main spring (11) are disposed between adjusting nut (9)；
Regulating valve (13) is cylindrical body, is had upper flank (131), external screw thread face (132) and bottom surface (133)；Regulating valve (13)
It is provided with cylindrical thread slot at upper end center, matches with the cylindrical thread bar of valve rod (83) tail portion and merges and can be rotated with valve rod；It adjusts
Section valve (13) lower end is provided with the rectangle two sides of certain depth through slot (1301), and the rectangle two sides are same through slot and regulating valve
The heart, thread rotary orientation must be opposite with adjusting nut；
Regulating valve seat (14) has threaded hole (141), small periphery (142), round table surface (143) and bottom surface (144)；Regulating valve seat
(14) outside is the cylinder with (2) layer step, opens round-meshed cylinder table centered on lower end, round table surface is on (143)
Hollow cylinder with step is provided with internal thread hole (141) inside it and matches with regulating valve (132)；Round table surface (143) exists
The device lower body that is blocked when assembly is pushed down, and fixed function is played；
Strainer (15) has inner threaded surface (151), inner wall (152) and bottom surface (153)；Bottom surface (153) and regulating valve seat (144)
Cooperation, inner threaded surface are threadedly coupled with main body (57).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453241.4A CN110029974B (en) | 2019-05-28 | 2019-05-28 | Pre-tightening adjustable constant-current blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453241.4A CN110029974B (en) | 2019-05-28 | 2019-05-28 | Pre-tightening adjustable constant-current blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110029974A true CN110029974A (en) | 2019-07-19 |
| CN110029974B CN110029974B (en) | 2021-09-07 |
Family
ID=67243709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910453241.4A Active CN110029974B (en) | 2019-05-28 | 2019-05-28 | Pre-tightening adjustable constant-current blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110029974B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814634A (en) * | 2021-03-17 | 2021-05-18 | 大庆市天德忠石油科技有限公司 | Injection allocation device |
| CN114109328A (en) * | 2021-11-26 | 2022-03-01 | 西南石油大学 | Start-stop bipolar adjustable constant-current blanking plug |
| CN117536590A (en) * | 2023-12-07 | 2024-02-09 | 盐城市弘通石油机械有限公司 | Bridge type concentric water distributor |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5445225A (en) * | 1994-09-02 | 1995-08-29 | Wiggins, Sr.; Merl D. | Choke for enhanced gas and oil well production |
| US20020108747A1 (en) * | 2001-02-15 | 2002-08-15 | Dietz Wesley P. | Fail safe surface controlled subsurface safety valve for use in a well |
| CN201159313Y (en) * | 2007-11-15 | 2008-12-03 | 邓鸣镛 | Constant-pressure constant-current valve |
| CN201620814U (en) * | 2010-03-26 | 2010-11-03 | 董力维 | Constant-flow adjustable multifunctional stopper |
| CN201723197U (en) * | 2010-04-07 | 2011-01-26 | 董力维 | Adjustable constant-flow intelligent stopper |
| CN201730582U (en) * | 2010-08-01 | 2011-02-02 | 董力维 | Constant flow adjustable blanking plug |
| US7891432B2 (en) * | 2008-02-26 | 2011-02-22 | Schlumberger Technology Corporation | Apparatus and methods for setting one or more packers in a well bore |
| CN202000982U (en) * | 2011-03-11 | 2011-10-05 | 董力维 | Constant-flow and adjustable-flow double-function plug |
| CN202768975U (en) * | 2011-11-26 | 2013-03-06 | 邓鸣镛 | Blocking-resisting water economizer |
| CN103510906A (en) * | 2013-10-21 | 2014-01-15 | 东北石油大学 | Adjustable variable-differential-pressure constant-flow blanking plug |
| CN203656236U (en) * | 2014-01-22 | 2014-06-18 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Flow regulation control valve |
| CN108590606A (en) * | 2018-05-25 | 2018-09-28 | 东北石油大学 | A kind of adjustable constant-current water injection blanking plug |
| CN109252835A (en) * | 2017-07-14 | 2019-01-22 | 中国石油化工股份有限公司 | Jet stream constant flow blanking plug |
-
2019
- 2019-05-28 CN CN201910453241.4A patent/CN110029974B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5445225A (en) * | 1994-09-02 | 1995-08-29 | Wiggins, Sr.; Merl D. | Choke for enhanced gas and oil well production |
| US20020108747A1 (en) * | 2001-02-15 | 2002-08-15 | Dietz Wesley P. | Fail safe surface controlled subsurface safety valve for use in a well |
| CN201159313Y (en) * | 2007-11-15 | 2008-12-03 | 邓鸣镛 | Constant-pressure constant-current valve |
| US7891432B2 (en) * | 2008-02-26 | 2011-02-22 | Schlumberger Technology Corporation | Apparatus and methods for setting one or more packers in a well bore |
| CN201620814U (en) * | 2010-03-26 | 2010-11-03 | 董力维 | Constant-flow adjustable multifunctional stopper |
| CN201723197U (en) * | 2010-04-07 | 2011-01-26 | 董力维 | Adjustable constant-flow intelligent stopper |
| CN201730582U (en) * | 2010-08-01 | 2011-02-02 | 董力维 | Constant flow adjustable blanking plug |
| CN202000982U (en) * | 2011-03-11 | 2011-10-05 | 董力维 | Constant-flow and adjustable-flow double-function plug |
| CN202768975U (en) * | 2011-11-26 | 2013-03-06 | 邓鸣镛 | Blocking-resisting water economizer |
| CN103510906A (en) * | 2013-10-21 | 2014-01-15 | 东北石油大学 | Adjustable variable-differential-pressure constant-flow blanking plug |
| CN203656236U (en) * | 2014-01-22 | 2014-06-18 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Flow regulation control valve |
| CN109252835A (en) * | 2017-07-14 | 2019-01-22 | 中国石油化工股份有限公司 | Jet stream constant flow blanking plug |
| CN108590606A (en) * | 2018-05-25 | 2018-09-28 | 东北石油大学 | A kind of adjustable constant-current water injection blanking plug |
Non-Patent Citations (1)
| Title |
|---|
| 姚春东等: "一种新型定差式恒流量注水堵塞器", 《石油机械》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814634A (en) * | 2021-03-17 | 2021-05-18 | 大庆市天德忠石油科技有限公司 | Injection allocation device |
| CN114109328A (en) * | 2021-11-26 | 2022-03-01 | 西南石油大学 | Start-stop bipolar adjustable constant-current blanking plug |
| CN117536590A (en) * | 2023-12-07 | 2024-02-09 | 盐城市弘通石油机械有限公司 | Bridge type concentric water distributor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110029974B (en) | 2021-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102747974A (en) | Well drilling vibrator of horizontal well | |
| CN110029974A (en) | A kind of prefastening Regulable constant current stopper | |
| CN212429957U (en) | Injection allocation assembly and injection allocation device | |
| CN108590606A (en) | A kind of adjustable constant-current water injection blanking plug | |
| CN201068779Y (en) | Eccentric center water-dispensing packer | |
| CN104141477B (en) | Concentric three-tube separated layer water injection device and using method thereof | |
| CN205243482U (en) | Multi -functional concentric injection allocation ware | |
| CN208310750U (en) | A kind of adjustable constant-current water injection blanking plug | |
| CN111852421B (en) | Large differential pressure separated injection multi-stage regulation and control water distributor | |
| CN203570289U (en) | Large-pressure-difference real-time adjustment water distributor | |
| CN110185423A (en) | The bipolar Regulable constant current stopper of screw type | |
| CN104165043B (en) | Two-tube constant current divides water controller | |
| CN203248137U (en) | Double-pipe constant-flow water distribution control device | |
| CN201486513U (en) | Single-open screwed adjustable blanking plug | |
| CN107905771B (en) | Automatic regulating control valve for separate-layer water injection of low-permeability reservoir | |
| CN104775798B (en) | Full well quantitative injection device | |
| CN207229081U (en) | Water flow regulator is surveyed in self compensation | |
| CN109252835A (en) | Jet stream constant flow blanking plug | |
| CN109424319A (en) | A kind of vertical drilling tool | |
| CN104612583A (en) | Hydraulic hammer flow diversion mechanism, hydraulic hammer and down-hole drilling rig | |
| CN201321852Y (en) | Constant-pressure blanking plug | |
| CN201581878U (en) | Cast-free dead-opening eccentric water distributor | |
| CN201671590U (en) | Compressed water injection well flushing packer | |
| CN204609759U (en) | Hydro-efflux Hammer diversion mechanism, Hydro-efflux Hammer and down hole drill device | |
| CN209704538U (en) | Underground constant current is adjustable water filling distributor |
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 |