CN105569607B - A kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve - Google Patents
A kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve Download PDFInfo
- Publication number
- CN105569607B CN105569607B CN201610097485.XA CN201610097485A CN105569607B CN 105569607 B CN105569607 B CN 105569607B CN 201610097485 A CN201610097485 A CN 201610097485A CN 105569607 B CN105569607 B CN 105569607B
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- well
- flushing
- passage
- production
- oil
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 116
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 88
- 239000003129 oil well Substances 0.000 title claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 47
- 230000008878 coupling Effects 0.000 claims abstract description 25
- 238000010168 coupling process Methods 0.000 claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 37
- 230000000694 effects Effects 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 4
- 238000001727 in vivo Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing 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
- E21B34/08—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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/04—Ball valves
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
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)
- Details Of Reciprocating Pumps (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve, including：Valve body, one end with inlet, the other end with leakage fluid dram, and with connection casing annulus flushing fluid mouth；Production passage and well-flushing passage are provided with valve body, mutually independent and via through holes are connected production passage with well-flushing passage；Produce and the liftable seal with non-return valve function is provided with passage, can be risen in production by well liquid pressure and open production passage, and close production passage in clean-out service；Well-flushing passage is interior to be provided with the sliding seal that can be lifted in well-flushing passage, can be risen in production by well liquid pressure and close through hole and flushing fluid mouth and opened through hole and flushing fluid mouth by the decline of well-flushing hydraulic coupling in well-flushing and close Flush coupling.So as to realize any progress circulation well cleanup operation forward or backwards, without precedence.
Description
Technical field
The invention belongs to Petroleum Down-hole Tool technical field, and in particular to a kind of oil field electric submerged pump production oil well is with multi-functional
Flushing valve.
Background technology
Flushing valve is installed in oil field electric submerged pump production oil well, necessary circulation is provided for oil well operation and clean-out service
Passage and emptying passage.Existing flushing valve is shared using production passage with well-flushing passage or concentric structure, and there is can only
According to first forward direction, then the defects of reverse order progress clean-out service, such as Publication No. CN2608681Y utility model patent；
Or can only be according to first reversely, then the defects of positive order progress clean-out service, the practicality such as Publication No. CN2849149Y is new
Type patent.The flushing valve of this structure activity duration in practicality is grown, manpower and high material consumption, and increase operating personnel's work is strong
Degree and production cost.Therefore, it is necessary to be improved, a kind of new flushing valve is proposed.
The content of the invention
A kind of oil field electric submerged pump production oil well is provided with more work(it is an object of the invention to solve above-mentioned technical problem
Energy flushing valve, after electric submersible pump stopping, it can arbitrarily carry out circulation well cleanup operation forward or backwards；And work as OIH pipe pipe
When post proposes, it is possible to provide emptying passage, play a part of bleeder.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve, including：Valve body, one end have inlet, the other end
With leakage fluid dram, and with the flushing fluid mouth of connection casing annulus；Production passage and well-flushing passage are provided with the valve body, it is described
Production passage and well-flushing passage it is separate and can via through holes be connected；The upper end of the production passage is set to be led to the leakage fluid dram
Cross the draining connector, lower end that upper end valve pocket communicates and set production joint and connect the inlet；Being provided with the production passage to rise
Seal is dropped, and the liftable seal can be risen the inlet and discharge opeing in production operation under well action of hydraulic force
Production is realized in mouth connection, is closed in clean-out service by general who has surrendered's production joint inlet under deadweight；The lower end of the well-flushing passage
If Flush coupling connects the inlet, upper end closed；It is provided with what can be lifted in the well-flushing passage in the well-flushing passage
Sliding seal, the sliding seal can be risen the through hole and flushing fluid in production operation under well action of hydraulic force
Mouth is closed, and can be made the through hole by drops by the well-flushing hydraulic coupling from leakage fluid dram or flushing fluid mouth in clean-out service and washed
Well liquid mouth is opened, while closes Flush coupling inlet.
The upper end closed of the draining connector, outage is laid with the side wall of the draining connector.
The outage is sieve screen apertures.
The liftable seal is a spheroid, and the upper end inlet of the production joint has sealing cone.
The sliding seal is a hollow, lower ending opening, the upper end closed of the hollow.
The outer wall of the sliding seal is provided with shoulder and groove, and the shoulder is formed with the well-flushing passage inwall
Annular space, the groove is interior to be provided with sealing ring.
There is the upper end that sealing is formed with the interior sealing conical surface of the well-flushing passage to seal for the upper end of the sliding seal
The conical surface, lower end have the lower end sealing cone that sealing is formed with the conical seal (contact) face of the upper end inlet of the Flush coupling.
The upper end valve pocket is located at the top of the well-flushing passage, and the draining connector is located in the upper end valve pocket.
The Flush coupling is connected through a screw thread with well-flushing passage, the draining connector, production joint and production passage point
It is not connected through a screw thread.
For the present invention when carrying out production operation, can be risen under well action of hydraulic force by the liftable seal will be raw
Produce passage to open, while risen by the sliding seal and close well-flushing passage, realize normal production, and in clean-out service
When, closed because the lower general who has surrendered of the liftable seal produces passage, so can be achieved any to be circulated forward or backwards
Clean-out service, i.e., enter flushing fluid by leakage fluid dram or enter flushing fluid from the flushing fluid mouth to carry out washing and cleaning operation, without successively secondary
Sequence, backwash again first can only be just being washed so as to solve flushing valve of the prior art, or first backwash or just washed again, caused in well-flushing
Activity duration is grown, manpower and high material consumption, the problem of increasing operating personnel's labor intensity and production cost.
In addition, the present invention is simple in construction, action is safe and reliable, any forward and reverse well-flushing, can shorten workover, well-flushing is made
Industry time and expense, the heavy crude well big particularly suitable for new well and viscosity use.
Brief description of the drawings
Fig. 1 is a kind of structural representation of flushing valve provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation for producing joint；
Fig. 3 is Fig. 2 A direction views：
Fig. 4 is a kind of sliding seal structural representation；
Fig. 5 is a kind of structural representation of draining connector；
Fig. 6 is Fig. 5 A direction views；
Fig. 7 is profiles of the Fig. 5 along line B-B：
Fig. 8 is the schematic diagram of another draining connector.
Embodiment
Below, the substantive distinguishing features and advantage of the present invention are further described with reference to example, but not office of the invention
It is limited to listed embodiment.
Referring to shown in Fig. 1-8, a kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve, including：
Valve body 1, the one end of valve body 1 with inlet, the other end with leakage fluid dram, and with connection sleeve pipe 19 sleeve ring
The flushing fluid mouth 14 (the into or out oil that flushing fluid can be used) of sky 20；Production passage 3 is provided with the valve body with well-flushing to lead to
Road 11, the production passage 3 and well-flushing passage 11 are separate, and via through holes 12 are connected；The upper end of the production passage 3 is set
The draining connector 2 that is communicated with the leakage fluid dram by upper end valve pocket 16, lower end set production joint 5 and are connected the inlet；It is described
Be provided with liftable seal 4 in production passage 3, the liftable seal 4 in production operation under well action of hydraulic force, can
Rise and the inlet is connected to realization production with leakage fluid dram, joint inlet 7 is produced by general who has surrendered under deadweight in clean-out service
Close；The lower end of the well-flushing passage 11 sets Flush coupling 6 and connects the inlet, upper end closed；In the well-flushing passage 11
Provided with the sliding seal 9 that can be lifted in the well-flushing passage, the sliding seal 9 is in production operation, in well liquid pressure
It can be risen under power effect and close the through hole 12 and flushing fluid mouth 14, in clean-out service by from leakage fluid dram or flushing fluid mouth
14 well-flushing hydraulic coupling, open by drops the through hole 12 and flushing fluid mouth 14, while close Flush coupling inlet 8
Close.
The liftable seal 4 being arranged in production passage 3 of the present invention forms a check valve with production joint 5；And
6 groups of sealing surface, through hole 12, the Flush coupling of sliding seal 9 and the internal upper part of well-flushing passage 11 in well-flushing passage 11
, can be by the production passage, through hole, well-flushing when applying pressure into well from oil pipe or sleeve pipe into a two-position three-way valve
Passage, flushing fluid mouth, casing annulus are connected, so as to form well-flushing circulation canal.
It should be noted that in the present invention, the production passage 3 can be one or multiple, specific unlimited,
Equally, the through hole 12, flushing fluid mouth 14 can be one or multiple, specific unlimited.
The upper and lower end of the valve body 1 is respectively equipped with tubing round thread 18, lower tubing round thread 17, wherein, the upper oil pipe spiral shell
Line 18 can be internal thread, and lower tubing round thread 17 can be external screw thread.
In specific implementation, in the present invention, the upper end closed of the draining connector 2, the cloth in the side wall of the draining connector
Provided with outage.Communicated by the outage in the side wall with the upper end valve pocket 16, realize the realization of draining function.
It should be noted that in the present invention, the outage can be sieve screen apertures, wherein, the sieve screen apertures can be long
Any hole shape such as bar hole 15, shown in Figure 5 or circular port 150 (shown in Figure 8) or delthyrium, is distributed in institute
Can be uniformly distributed or a uneven distribution, the outage can also several holes on the outer wall for stating draining connector 2
The combination of shape uses a kind of hole shape structure, specific unlimited.
In specific implementation, in the present invention, the liftable seal 4 can be a spheroid, can also aspheres, such as cylinder
Deng preferably valve ball.
It should be noted that in order to realize that above-mentioned liftable seal 4 can close production joint inlet 7 after decline
Close, the upper end inlet of the production joint 5 has the sealing cone 62 for coordinating the liftable seal 4.
It should be noted that in the present invention, the Flush coupling 6 can be that structure is identical with the production joint 5, described
The structure of Flush coupling 6 specifically may refer to the structural representation of the production joint 5.
As an embodiment, in of the invention, the sliding seal 9 can be a hollow, wherein, the hollow
Lower ending opening, upper end closed.The deadweight of sliding seal 9 can so be reduced, sliding seal 9 is advantageously implemented and quickly rises
Rise.Of course, the sliding seal can also be the structure of non-hollow, specific unlimited.
In order to realize that the energy of the sliding seal 9 more preferably slides in the well-flushing passage, in the present invention, in the cunning
The outer wall of dynamic seal 9 is provided with shoulder 32 and groove 33, and the shoulder forms annular space with the well-flushing passage inwall,
Sealing ring 10 is provided with the groove, is together arranged on the sliding seal 9 in well-flushing passage 11, so can be preferably
Realize the slip of the sliding seal and the inwall of the well-flushing passage.By the shoulder, it is more beneficial for realization and is passing through
When flushing fluid mouth or leakage fluid dram are discharged into cleaning fluid, acted on by the pressure of flushing fluid on the shoulder, make described be slidingly sealed
Part 9 is opened by drops by by the through hole 12 and flushing fluid mouth 14, and the sliding seal is depressed into bottom and and well-flushing
Joint sealing contacts and closes Flush coupling inlet.
Wherein, in order to more preferably realize the sealing function of the sliding seal 9, the upper end of the sliding seal 9 has
With the sealing cone 13 at middle part in the well-flushing passage 11 the upper end sealing cone sealed is formed (close to the flushing fluid mouth 14)
31st, lower end has the lower end sealing cone 34 that sealing can be formed with the conical surface shape inlet of the upper end of the Flush coupling.
Wherein, it is preferred that the upper end valve pocket 16 is located at the top of the well-flushing passage 11, and the draining connector 2 is located at
In the upper end valve pocket 16.
In specific implementation, the Flush coupling 6 is connected through a screw thread with well-flushing passage 11, and the draining connector, production connect
Head is connected through a screw thread respectively with production passage.Specifically, connection internal thread is provided with the bottom of well-flushing passage 11, it is described to wash
Well joint 6 is provided with connection external screw thread 61, and the upper and lower end of the production passage is equipped with connection internal thread, the draining connector
Bottom be provided with corresponding connection screw thread 21, the top of the production joint sets external screw thread 51, so conveniently manufactures and group
Dress.
Further, the upper end of the draining connector 2 has six side 22 in the draining connector of easy disassembly, produces joint
5 and the bottom of Flush coupling 6 be provided with easy disassembly interior six side 63.
In use, flushing valve integral installation of the present invention is in down-hole string, under flushing valve of the present invention
The inlet at end, it is connected by the tubing round thread of valve body lower portion with underground electric submersible pump；The upper end of flushing valve of the present invention
Leakage fluid dram, it is connected and is operated with down-hole oil tube tubing string by the tubing round thread on valve body top.
When electric submersible pump works, pressure well liquid pushes up sliding seal 9, and the upper end on the top of sliding seal 9 is close
Seal the conical surface 31 and the sealing cone 13 at the middle part of well-flushing passage 11 in the middle part of valve body forms sealing, well-flushing passage 11 is closed, by underground
Oil pipe inside and the passageway break of casing annulus.Meanwhile pressure well liquid pushes liftable seal 4 to the top of draining connector 2, well
Liquid enters in down-hole oil tube through producing joint inlet 7, production joint 5, production passage 3, draining connector leakage fluid dram 15, and oil well is just
Often production.
When needing clean-out service, electric submersible pump stops, and liftable seal 4 falls downwards under gravity, and from
It is dynamic to be seated on the production upper end sealing cone of joint 5 and form sealing, production passage 3 is closed.
During forward circulation clean-out service, pressure is applied into well by down-hole oil tube from ground face-pumping, because liftable seals
The one-way sealing of part 4 and production joint 5 is acted on, and pressure well liquid will not be downwardly into electric submersible pump, and pressure well liquid is by production passage 3
Entered in well-flushing passage 11, and be applied on the shoulder 32 of sliding seal 9 by through hole 12, promoted under sliding seal 9
OK, the sealing cone of the lower end sealing cone of sliding seal 9 and Flush coupling 6, which is formed, is sealed, and well-flushing passage and well-flushing are connect
Head inlet 8 is cut off, and pressure well liquid enters casing annulus 20 and back ground by well-flushing passage 11 by flushing fluid mouth 14.
During recycled back clean-out service, pressure is applied into well by casing annulus from ground face-pumping, pressure well liquid is by washing
Well liquid mouth 14 enters well-flushing passage 11, and is applied to the top of sliding seal 9, promotes sliding seal 9 descending, slides close
The lower sealing cone of sealing 9 is formed with the sealing cone of Flush coupling 6 and sealed, and well-flushing passage and Flush coupling inlet 8 are cut
Disconnected, pressure well liquid is entered in production passage 3 by through hole 12 by well-flushing passage 11, because liftable seal 4 connects with production
The one-way sealing effect of first 5 upper end sealing cone, pressure well liquid is by reverse ground in oil pipe.
From can more than analyze, it can be seen that the present invention when carrying out production operation, well liquid pressure make under can be by described
Liftable seal, which rises, opens production passage, while is risen by the sliding seal and close well-flushing passage, realizes
Normal production, and in clean-out service, closed because the lower general who has surrendered of the liftable seal produces passage, so can be achieved to appoint
Meaning carries out circulation well cleanup operation forward or backwards, i.e., enters flushing fluid by leakage fluid dram or enter flushing fluid from the flushing fluid mouth to carry out
Washing and cleaning operation, without precedence, backwash again first can only be just being washed so as to solve flushing valve of the prior art, or first backwash or
Just wash again, cause the activity duration in well-flushing to be grown, manpower and high material consumption, increase operating personnel's labor intensity and production cost
The problem of.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
- A kind of 1. oil field electric submerged pump production oil well Multifunctional well-flushing valve, it is characterised in that including：Valve body, one end with inlet, the other end with leakage fluid dram, and with connection casing annulus flushing fluid mouth；The valve Be provided with production passage and well-flushing passage in vivo, the production passage it is separate with well-flushing passage and can via through holes be connected；Institute The upper end for stating production passage sets the draining connector communicated with the leakage fluid dram by upper end valve pocket, lower end sets production joint and is connected institute State inlet；Liftable seal is provided with the production passage, the liftable seal is in production operation in well liquid pressure It can be risen under power effect and the inlet is connected to realization production with leakage fluid dram, connect in clean-out service by general who has surrendered's production under deadweight Head inlet is closed；The lower end of the well-flushing passage sets Flush coupling and connects the inlet, upper end closed；The well-flushing passage It is interior provided with the sliding seal that can be lifted in the well-flushing passage, the sliding seal is in production operation in well liquid pressure It can rise the through hole and the closing of flushing fluid mouth under effect, be cleaned in clean-out service by from leakage fluid dram or flushing fluid mouth Hydraulic coupling opens by drops through hole and the flushing fluid mouth, while closes Flush coupling inlet；Installed in production Liftable seal in passage forms a check valve with production joint；Sliding seal in well-flushing passage is with washing Sealing surface, through hole, the Flush coupling of well passage internal upper part form a two-position three-way valve, apply when from oil pipe or sleeve pipe into well During pressure, the production passage, through hole, well-flushing passage, flushing fluid mouth, casing annulus can be connected.
- 2. oil field electric submerged pump production oil well Multifunctional well-flushing valve according to claim 1, it is characterised in that the discharge opeing connects The upper end closed of head, outage is laid with the side wall of the draining connector.
- 3. oil field electric submerged pump production oil well Multifunctional well-flushing valve according to claim 2, it is characterised in that the outage For sieve screen apertures.
- 4. according to any one of the claim 1-3 oil field electric submerged pump production oil well Multifunctional well-flushing valves, it is characterised in that institute It is a spheroid to state liftable seal, and the upper end inlet of the production joint has sealing cone.
- 5. oil field electric submerged pump production oil well Multifunctional well-flushing valve according to claim 4, it is characterised in that the slip is close Sealing is a hollow, lower ending opening, the upper end closed of the hollow.
- 6. according to the oil field electric submerged pump production oil well Multifunctional well-flushing valve of claim 1 or 5, it is characterised in that the cunning The outer wall of dynamic seal is provided with shoulder and groove, and sealing ring is provided with the groove.
- 7. oil field electric submerged pump production oil well Multifunctional well-flushing valve according to claim 6, it is characterised in that the slip is close The upper end of sealing with formed with the interior sealing conical surface of the well-flushing passage upper end sealing cone of sealing, lower end with it is described The conical seal (contact) face of the upper end of Flush coupling forms the lower end sealing cone of sealing.
- 8. oil field electric submerged pump production oil well Multifunctional well-flushing valve according to claim 7, it is characterised in that the upper end valve Chamber is located at the top of the well-flushing passage, and the draining connector is located in the upper end valve pocket.
- 9. according to the oil field electric submerged pump production oil well Multifunctional well-flushing valve of claim 1 or 8, it is characterised in that described to wash Well joint is connected through a screw thread with well-flushing passage, and the draining connector, production joint and production passage are connected through a screw thread respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097485.XA CN105569607B (en) | 2016-02-23 | 2016-02-23 | A kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097485.XA CN105569607B (en) | 2016-02-23 | 2016-02-23 | A kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105569607A CN105569607A (en) | 2016-05-11 |
| CN105569607B true CN105569607B (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610097485.XA Active CN105569607B (en) | 2016-02-23 | 2016-02-23 | A kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve |
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| CN (1) | CN105569607B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703710B (en) * | 2017-03-13 | 2020-06-12 | 天津伊诺科技开发有限公司 | Intelligent joint for separate production of oil well with electric submersible pump |
| CN113107404A (en) * | 2021-05-07 | 2021-07-13 | 天津伊诺科技开发有限公司 | Well washing valve for oil well produced by oil field electric submersible pump |
| CN115992660A (en) * | 2021-10-19 | 2023-04-21 | 中国石油天然气集团有限公司 | Repeatedly opened and closed reverse circulation valve |
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| CN2510620Y (en) * | 2001-10-26 | 2002-09-11 | 张巧生 | Sectional well-washing valve |
| CN2608681Y (en) * | 2003-03-31 | 2004-03-31 | 渤海石油实业公司 | Automatic reset oil drain apparatus for oil field electric submerged pump production oil well |
| RU2275492C1 (en) * | 2004-08-17 | 2006-04-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Downhole valve assembly |
| CN2849149Y (en) * | 2005-09-29 | 2006-12-20 | 中国海洋石油总公司 | Automatic switching three way circulation connector for oil well |
| CN201334893Y (en) * | 2008-12-29 | 2009-10-28 | 刘治 | Well washing shunt switch |
| CN101748990A (en) * | 2009-12-11 | 2010-06-23 | 白霞 | Releasing packer well-washing device |
| CN102536144A (en) * | 2011-12-30 | 2012-07-04 | 中国石油天然气股份有限公司 | Coal bed gas double-channel well washing valve |
| CN203145912U (en) * | 2013-03-25 | 2013-08-21 | 中国石油化工股份有限公司 | Bypassing controller |
| CN205532479U (en) * | 2016-02-23 | 2016-08-31 | 天津伊诺科技开发有限公司 | Oil field electrical submersible pump pump production oil well is with multi -functional well -flushing valve |
-
2016
- 2016-02-23 CN CN201610097485.XA patent/CN105569607B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2081997C1 (en) * | 1994-11-30 | 1997-06-20 | Многопрофильное малое предприятие - фирма "Каскад" | Non-return washing valve |
| CN2510620Y (en) * | 2001-10-26 | 2002-09-11 | 张巧生 | Sectional well-washing valve |
| CN2608681Y (en) * | 2003-03-31 | 2004-03-31 | 渤海石油实业公司 | Automatic reset oil drain apparatus for oil field electric submerged pump production oil well |
| RU2275492C1 (en) * | 2004-08-17 | 2006-04-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Downhole valve assembly |
| CN2849149Y (en) * | 2005-09-29 | 2006-12-20 | 中国海洋石油总公司 | Automatic switching three way circulation connector for oil well |
| CN201334893Y (en) * | 2008-12-29 | 2009-10-28 | 刘治 | Well washing shunt switch |
| CN101748990A (en) * | 2009-12-11 | 2010-06-23 | 白霞 | Releasing packer well-washing device |
| CN102536144A (en) * | 2011-12-30 | 2012-07-04 | 中国石油天然气股份有限公司 | Coal bed gas double-channel well washing valve |
| CN203145912U (en) * | 2013-03-25 | 2013-08-21 | 中国石油化工股份有限公司 | Bypassing controller |
| CN205532479U (en) * | 2016-02-23 | 2016-08-31 | 天津伊诺科技开发有限公司 | Oil field electrical submersible pump pump production oil well is with multi -functional well -flushing valve |
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| Publication number | Publication date |
|---|---|
| CN105569607A (en) | 2016-05-11 |
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