CN112360374A - Reverse circulation valve capable of being opened repeatedly and using method thereof - Google Patents
Reverse circulation valve capable of being opened repeatedly and using method thereof Download PDFInfo
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- CN112360374A CN112360374A CN202011374866.0A CN202011374866A CN112360374A CN 112360374 A CN112360374 A CN 112360374A CN 202011374866 A CN202011374866 A CN 202011374866A CN 112360374 A CN112360374 A CN 112360374A
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- hole
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 43
- 230000009471 action Effects 0.000 claims description 17
- 238000011001 backwashing Methods 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 13
- 238000010008 shearing Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 208000037805 labour Diseases 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to the technical field of well completion and fracturing of oil and gas wells, and particularly relates to a reverse circulation valve capable of being opened repeatedly and a use method thereof. The method realizes the automatic multiple opening and closing functions of the reverse circulation channel by utilizing the reciprocating motion of the internal and external pressure difference of the reverse circulation valve and the spring resilience force during annular pressurization, thereby solving the problem of multiple reverse circulation in the construction process and avoiding the rise of cost and labor risk caused by steel wire or cable operation.
Description
Technical Field
The invention belongs to the technical field of well completion and fracturing of oil and gas wells, and particularly relates to a reverse circulation valve capable of being opened repeatedly and a use method thereof.
Background
In the construction operation processes of mixed production and separate production, water control and water plugging, reservoir transformation and the like of special wells such as a lateral well and the like, different reservoirs of a main well and a lateral well of the horizontal well or the lateral well are frequently subjected to staged fracturing, and sand plugging and the like can occur during fracturing, so that normal construction operation cannot be performed. The reverse circulation valve is one of the key components in the layer-by-layer packing sand control tool, and the use working process is as follows: in the filling process, the reverse circulation valve is in an open state, a common fluid channel is provided for the return liquid, the sand-water mixed liquid enters the annular space of the screen sleeve from the filling sliding sleeve, the sand is blocked by the screen pipe, the sand-carrying liquid enters the flushing pipe from the bottom sealing belt hole pipe, flows through the reverse circulation valve, enters the small annular space of the filling tool, enters the large annular space through the return hole and returns from the wellhead; in the reverse circulation process of the lifting pipe column, the reverse circulation valve is closed, the displacement liquid entering from the large annular space enters the drill rod from the filling hole to displace mortar in the drill rod, and the displacement liquid enters the small annular space of the filling tool from the return hole to reach the reverse circulation valve and then is stopped, so that the displacement liquid is prevented from being leaked to the stratum, and the liquid efficiency of the reverse circulation is effectively ensured.
At present, reverse circulation valves commonly used at home and abroad generally adopt two structures: firstly, hydraulic pressure is opened once, namely when the external pressure of the reverse circulation valve is higher than the internal pressure, the piston moves downwards to open a reverse circulation channel, and the piston cannot reset after annular pressure relief, namely the channel cannot be closed, so that the next construction cannot be normally carried out; and secondly, a hydraulic mechanism is not needed, a special switch tool for connecting a steel wire or a cable is needed to realize the switch of the reverse circulation channel, and although the structure can realize the repeated switch of the reverse circulation channel, the structure needs to assist the cooperation of the steel wire or the cable car, so that the construction cost is high, and the construction process is complicated.
Disclosure of Invention
The invention aims to provide a reverse circulation valve capable of being opened repeatedly, which overcomes the technical problems in the prior art.
Another object of the present invention is to provide a method for using a reverse circulation valve capable of being opened for multiple times, which avoids the problem of increasing the cost and the labor risk caused by the operation of a steel wire or a cable.
Therefore, the technical scheme provided by the invention is as follows:
the reverse circulation valve capable of being opened for multiple times comprises a body, an outer sleeve and a spring, wherein a liquid inlet hole is formed in the body, a reverse washing hole is formed in the outer sleeve, the reverse washing hole is formed above the liquid inlet hole, the liquid inlet hole and the reverse washing hole are communicated under the hydraulic action to form a reverse washing channel, and the spring is used for closing the reverse washing channel.
The outer sleeve is fixedly connected with the body, a piston is arranged in an annular space between the body and the outer sleeve, the spring is arranged below the piston, the backwashing hole is formed above the piston, and the piston and the outer sleeve are fixed through a shearing pin.
The outer sleeve is a sliding sleeve, the sliding sleeve moves up and down along the axial direction, and the spring sleeve is sleeved on the body and located below the sliding sleeve.
Still be equipped with the pressure release hole on the body, the feed liquor hole below is located to the pressure release hole.
Still include the protective sheath, the protective sheath is located between overcoat and the body, the upper end and the spring lower extreme of protective sheath meet, the upper end and the lower extreme of overcoat link firmly with body and protective sheath respectively.
And sealing rings are arranged between the piston and the body and between the piston and the outer sleeve.
The upper end and the lower end of the body are both provided with threads, the body is in threaded connection with the outer sleeve, and the protective sleeve is in threaded connection with the outer sleeve.
A method for using the reverse circulation valve able to be opened many times includes such steps as pressurizing the annular space when the fracturing or well-completion pipe string needs reverse circulation, shearing off the shearing pin under the action of internal and external pressure difference when the external pressure of said valve is higher than internal pressure, moving the piston compression spring down to the lower part of liquid inlet hole of main body to build a reverse circulation channel, and back washing liquid from the reverse washing hole to the liquid inlet hole.
After the annulus is decompressed, the piston is reset under the action of the resilience force of the spring, the reverse circulation channel is closed, and normal oil pipe pumping operation can be carried out;
when the reverse circulation channel needs to be opened again, the annular space is pressurized, and the reverse circulation channel is opened again by overcoming the elastic force of the spring.
The reverse circulation valve capable of being opened for multiple times provided by the invention realizes the automatic multiple opening and closing functions of the reverse circulation channel by utilizing the reciprocating motion of the internal and external pressure difference of the reverse circulation valve and the spring resilience force during annular pressurization, thereby solving the problem that multiple reverse circulation is needed in the construction process and avoiding the increase of cost and labor risk caused by steel wire or cable operation.
The following will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the invention.
In the figure: 1. a body; 2. a jacket; 3. backwashing the pores; 4. shearing the pin; 5. a piston; 6. a seal ring; 7. a liquid inlet hole; 8. a spring; 9. an anti-collision sleeve; 10. a pressure relief vent.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Example 1:
the embodiment provides a reverse circulation valve capable of being opened for multiple times, which comprises a body 1, an outer sleeve 2 and a spring 8, wherein a liquid inlet hole 7 is formed in the body 1, a reverse washing hole 3 is formed in the outer sleeve 2, the reverse washing hole 3 is formed above the liquid inlet hole 7, the liquid inlet hole 7 is communicated with the reverse washing hole 3 under the hydraulic action to form a reverse washing channel, and the spring 8 is used for closing the reverse washing channel.
The use process or working principle is as follows:
when oil gas well completion or fracturing transformation, go into this reverse circulation valve along with construction oil sleeve pipe together, when needs reverse circulation, the annular space pressurizes, makes feed liquor hole 7 and backwash hole 3 communicate under the hydraulic pressure effect and forms the backwash passageway, and liquid gets into inside backwash from the outside through the backwash passageway, and at this in-process, the internal and external differential pressure of reverse circulation valve only need overcome the 8 resilience forces of spring and can keep the reverse circulation passageway to open to the lower thrust of piston 5. After backwashing is finished, annular pressure is relieved, the piston 5 is reset under the action of the resilience force of the spring 8, the reverse circulation channel is closed, and normal oil pipe pumping operation can be carried out; when the reverse circulation channel needs to be opened again, the annular space is pressurized, and the reverse circulation channel can be opened again only by overcoming the elastic force of the spring 8.
Example 2:
on the basis of embodiment 1, this embodiment provides a reverse circulation valve that can open many times, overcoat 2 links firmly with body 1, the annular space between body 1 and overcoat 2 is equipped with piston 5, spring 8 locates the below of piston 5, backwash hole 3 locates the piston 5 top, it is fixed through shearing pin 4 between piston 5 and the overcoat 2.
When the fracturing or well completion pipe is required to be circulated reversely, pressurizing the annular space; when the external pressure of the reverse circulation valve is higher than the internal pressure and reaches a certain value, under the action of the internal and external pressure difference, as shown in figure 1, a shearing pin 4 is sheared, a piston 5 compresses a spring 8 to descend to the lower part of a liquid inlet hole 7 of a body 1, a reverse circulation channel is established, and liquid can enter the interior from the outside through a backwashing hole 3 and the liquid inlet hole 7; at the moment, the lower thrust of the internal and external pressure difference of the reverse circulation valve on the piston 5 can keep the reverse circulation channel open only by overcoming the resilience force of the spring 8; after the annulus is decompressed, the piston 5 is reset under the action of the resilience force of the spring 8, the reverse circulation channel is closed, and normal oil pipe pumping operation can be carried out; when the reverse circulation channel needs to be opened again, the annular space is pressurized, and the reverse circulation channel can be opened again only by overcoming the elastic force of the spring 8.
Example 3:
on the basis of embodiment 1, this embodiment provides a reverse circulation valve that can open many times, overcoat 2 is the sliding sleeve, the sliding sleeve is along the up-and-down motion of axial, spring 8 cover is established on body 1 and is located the sliding sleeve below.
As shown in fig. 2, when the annulus is pressurized, liquid acts on the sliding sleeve through the backwashing hole 3, when the hydraulic pressure reaches a certain value, the shearing pin 4 is sheared, the sliding sleeve compresses the spring 8 to move downwards along the axial direction under the hydraulic pressure, when the backwashing hole 3 is aligned with the liquid inlet hole 7 of the body 1, the reverse circulation channel is opened, so that the liquid enters the outside from the outside, and in the backwashing process, the downward pushing force of the internal and external differential pressure of the reverse circulation valve on the piston 5 can keep the reverse circulation channel open only by overcoming the resilience force of the spring 8; after the annulus is decompressed, the sliding sleeve is pushed to move upwards along the axial direction under the action of the resilience force of the spring 8, so that the backwashing hole 3 and the liquid inlet hole 7 are staggered, the reverse circulation channel is closed, and normal oil pipe pumping operation can be carried out; when the reverse circulation channel needs to be opened again, the annular space is pressurized, and the reverse circulation channel can be opened again only by overcoming the elastic force of the spring 8.
Example 4:
on the basis of embodiment 2, this embodiment provides a reverse circulation valve that can open many times, still be equipped with pressure release hole 10 on the body 1, pressure release hole 10 is located feed liquor hole 7 below.
As shown in figure 1, the pressure relief hole 10 of the piston 5 enables liquid at the lower part of the piston 5 to be smoothly discharged, and a smooth reverse circulation channel is ensured.
Example 5:
on the basis of embodiment 2, this embodiment provides a reverse circulation valve that can open many times, still includes the protective sheath, the protective sheath is located between overcoat 2 and the body 1, the upper end and the 8 lower extremes of spring of protective sheath meet, the upper end and the lower extreme of overcoat 2 link firmly with body 1 and protective sheath respectively.
And sealing rings 6 are arranged between the piston 5 and the body 1 and between the piston and the outer sleeve 2.
The upper end and the lower end of the body 1 are both provided with threads, the body 1 is in threaded connection with the outer sleeve 2, and the protective sleeve is in threaded connection with the outer sleeve 2.
The anti-collision sleeve 9 is provided with internal and external threads, is connected with the lower part of the outer sleeve 2 through external threads, is connected with the body 1 through internal threads, and is sealed with the body 1 and the outer sleeve 2 through a sealing ring 6; the anti-collision sleeve 9 prevents the outer sleeve 2 from being damaged by external force during the process of descending the tool into the well, and makes the tool assembly simpler.
Example 6:
on the basis of embodiment 2, this embodiment provides a reverse circulation valve that can open many times, including body 1, overcoat 2, backwash hole 3, shear pin 4, piston 5, sealing washer 6, feed liquor hole 7, spring 8, crashproof cover 9 and pressure release hole 10.
Wherein, the upper and lower threads of the body 1 can be respectively connected with a construction oil pipe; the upper part of the outer sleeve 2 is provided with internal threads, and the outer sleeve 2 is connected with the body 1 through the internal threads at the upper end; the middle part of the body 1 is provided with a liquid inlet hole 7 of the body 1 and a pressure relief hole 10 of the piston 5; the upper part of the outer sleeve 2 is provided with a backwashing hole 3; a sealing ring 6 is arranged on the piston 5 to realize the sealing of the piston 5 with the body 1 and the outer sleeve 2; the piston 5 is fixed with the outer sleeve 2 through a shearing pin 4; when the piston 5 moves downwards to the lower part of the liquid inlet hole 7 of the body 1, the pressure relief hole 10 of the piston 5 ensures that liquid at the lower part can be smoothly discharged; the anti-collision sleeve 9 is provided with internal and external threads, is connected with the lower part of the outer sleeve 2 through external threads, is connected with the body 1 through internal threads, and is sealed with the body 1 and the outer sleeve 2 through a sealing ring 6; the anti-collision sleeve 9 prevents the outer sleeve 2 from being damaged by external force during the process of descending the tool into the well, and makes the tool assembly simpler.
The reverse circulation channel consists of a reverse washing hole 3, a piston 5, a sealing ring 6, a liquid inlet hole 7 and a spring 8, wherein the piston 5 is sealed with the body 1 and the outer sleeve 2 through the sealing ring 6; when the external pressure of the reverse circulation valve is higher than the internal pressure and reaches a certain value, the shearing pin 4 is sheared under the action of the internal and external pressure difference, the piston 5 compresses the spring 8 to descend to the lower part of the liquid inlet hole 7, a reverse circulation channel is established, and liquid can enter the interior from the outside through the backwashing hole 3 and the liquid inlet hole 7; the pressure relief hole 10 enables the liquid at the lower part of the piston 5 to be smoothly discharged, and ensures the smooth reverse circulation channel; at the moment, the lower thrust of the internal and external pressure difference of the reverse circulation valve on the piston 5 can keep the reverse circulation channel open only by overcoming the resilience force of the spring 8; after the annulus is decompressed, the piston 5 is reset under the action of the resilience force of the spring 8, the reverse circulation channel is closed, and normal oil pipe pumping operation can be carried out; when the reverse circulation channel needs to be opened again, the annular space is pressurized, and the reverse circulation channel can be opened again only by overcoming the elastic force of the spring 8.
Example 7:
the embodiment provides a method for using a reverse circulation valve capable of being opened for multiple times, when a fracturing or well completion pipe column needs reverse circulation, annular pressurization is carried out, when the external pressure of the reverse circulation valve is higher than the internal pressure, a shearing pin 4 is sheared under the action of internal and external pressure difference, a piston 5 compresses a spring 8 and descends to the lower part of a liquid inlet hole 7 of a body 1, a reverse circulation channel is established, and liquid enters the interior from the outside of the reverse circulation valve through a reverse circulation hole 3 and the liquid inlet hole 7 to carry out reverse circulation.
The method is suitable for the well completion or fracturing transformation process of oil and gas wells, the reverse circulation valve is put into the well along with the construction oil casing, and the reverse circulation valve has small influence on downhole operation or well cementation due to the fact that the reverse circulation valve is consistent with the inner diameter of a pipe column and does not have necking. Under the action of the spring 8, the piston 5 can automatically reset, and can be opened and closed for many times through the pressure change of the oil sleeve.
Example 8:
the embodiment provides a method for using a reverse circulation valve capable of being opened for multiple times, after annulus pressure relief, under the action of the resilience force of a spring 8, a piston 5 is reset, a reverse circulation channel is closed, and normal oil pipe pumping operation can be carried out;
when the reverse circulation channel needs to be opened again, the annular space is pressurized, and the reverse circulation channel is opened again by overcoming the elastic force of the spring 8.
In conclusion, the invention realizes the function of opening and closing the reverse circulation channel for many times by utilizing the reciprocating motion of the piston 5 under the action of the internal and external pressure difference and the resilience force of the spring 8, thereby solving the problem that the reverse circulation needs to be carried out for many times in the construction process and avoiding the rise of cost and labor risk caused by the operation of steel wires or cables.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (9)
1. A multiple-opening reverse circulation valve, comprising: the backwashing device comprises a body (1), an outer sleeve (2) and a spring (8), wherein a liquid inlet hole (7) is formed in the body (1), a backwashing hole (3) is formed in the outer sleeve (2), the backwashing hole (3) is formed above the liquid inlet hole (7), the liquid inlet hole (7) and the backwashing hole (3) are communicated under the hydraulic action to form a backwashing channel, and the spring (8) is used for closing the backwashing channel.
2. A multiple-opening reverse circulation valve according to claim 1, wherein: overcoat (2) link firmly with body (1), the annular space between body (1) and overcoat (2) is equipped with piston (5), the below of piston (5) is located in spring (8), piston (5) top is located in backwash hole (3), it is fixed through shearing pin (4) between piston (5) and overcoat (2).
3. A multiple-opening reverse circulation valve according to claim 1, wherein: the outer sleeve (2) is a sliding sleeve, the sliding sleeve moves up and down along the axial direction, and the spring (8) is sleeved on the body (1) and is located below the sliding sleeve.
4. A multiple-opening reverse circulation valve according to claim 1, wherein: still be equipped with pressure release hole (10) on body (1), feed liquor hole (7) below is located in pressure release hole (10).
5. A multiple-opening reverse circulation valve according to claim 2, wherein: still include the protective sheath, the protective sheath is located between overcoat (2) and body (1), the upper end and the spring (8) lower extreme of protective sheath meet, the upper end and the lower extreme of overcoat (2) link firmly with body (1) and protective sheath respectively.
6. A multiple-opening reverse circulation valve according to claim 2, wherein: and sealing rings (6) are arranged between the piston (5) and the body (1) and between the piston and the outer sleeve (2).
7. A multiple-opening reverse circulation valve according to claim 5, wherein: the upper end and the lower end of the body (1) are both provided with threads, the body (1) is in threaded connection with the outer sleeve (2), and the protective sleeve is in threaded connection with the outer sleeve (2).
8. A method of using a multiple-opening reverse circulation valve according to claim 2, wherein:
when the fracturing or well completion pipe column needs reverse circulation, the annulus is pressurized, when the external pressure of the reverse circulation valve is higher than the internal pressure, the shearing pin (4) is sheared under the action of the internal and external pressure difference, the piston (5) and the compression spring (8) descend to the lower part of the liquid inlet hole (7) of the body (1) to establish a reverse circulation channel, and liquid enters the interior from the outside of the reverse circulation valve through the reverse washing hole (3) and the liquid inlet hole (7) to be backwashed.
9. A method of using a multiple-opening reverse circulation valve according to claim 8, wherein:
after the annulus is decompressed, the piston (5) is reset under the action of the resilience force of the spring (8), the reverse circulation channel is closed, and normal oil pipe pumping operation can be carried out;
when the reverse circulation channel needs to be opened again, the annular space is pressurized, and the reverse circulation channel is opened again by overcoming the elastic force of the spring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011374866.0A CN112360374A (en) | 2020-12-01 | 2020-12-01 | Reverse circulation valve capable of being opened repeatedly and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011374866.0A CN112360374A (en) | 2020-12-01 | 2020-12-01 | Reverse circulation valve capable of being opened repeatedly and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112360374A true CN112360374A (en) | 2021-02-12 |
Family
ID=74536780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011374866.0A Pending CN112360374A (en) | 2020-12-01 | 2020-12-01 | Reverse circulation valve capable of being opened repeatedly and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112360374A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198074A (en) * | 2021-11-26 | 2022-03-18 | 中国石油天然气股份有限公司 | Casing liquid back-discharging device |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1569081A (en) * | 1977-02-16 | 1980-06-11 | Halliburton Co | Fullopening annulus pressure operated sampler valve with reverse circulation valve |
| CN201265391Y (en) * | 2008-09-18 | 2009-07-01 | 吐哈石油勘探开发指挥部工程技术研究院 | High-pressure difference large-aperture gas-tight back-flushing valve for oil-gas field |
| CN202249949U (en) * | 2011-10-13 | 2012-05-30 | 中国石油集团西部钻探工程有限公司 | External pressure open type reverse circulation valve |
| CN202325408U (en) * | 2011-10-29 | 2012-07-11 | 中国石油集团西部钻探工程有限公司 | Outer sliding sleeve reverse circulation short section |
| CN202531066U (en) * | 2012-04-05 | 2012-11-14 | 中国石油天然气股份有限公司 | Annulus sealing check dilution valve for oil and gas field |
| CN204311997U (en) * | 2014-10-31 | 2015-05-06 | 中国石油化工集团公司 | A kind of pressure break reverse circulation valve |
| CN211924109U (en) * | 2020-04-06 | 2020-11-13 | 荆州市赛瑞能源技术有限公司 | Improved reverse circulation valve |
-
2020
- 2020-12-01 CN CN202011374866.0A patent/CN112360374A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1569081A (en) * | 1977-02-16 | 1980-06-11 | Halliburton Co | Fullopening annulus pressure operated sampler valve with reverse circulation valve |
| CN201265391Y (en) * | 2008-09-18 | 2009-07-01 | 吐哈石油勘探开发指挥部工程技术研究院 | High-pressure difference large-aperture gas-tight back-flushing valve for oil-gas field |
| CN202249949U (en) * | 2011-10-13 | 2012-05-30 | 中国石油集团西部钻探工程有限公司 | External pressure open type reverse circulation valve |
| CN202325408U (en) * | 2011-10-29 | 2012-07-11 | 中国石油集团西部钻探工程有限公司 | Outer sliding sleeve reverse circulation short section |
| CN202531066U (en) * | 2012-04-05 | 2012-11-14 | 中国石油天然气股份有限公司 | Annulus sealing check dilution valve for oil and gas field |
| CN204311997U (en) * | 2014-10-31 | 2015-05-06 | 中国石油化工集团公司 | A kind of pressure break reverse circulation valve |
| CN211924109U (en) * | 2020-04-06 | 2020-11-13 | 荆州市赛瑞能源技术有限公司 | Improved reverse circulation valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114198074A (en) * | 2021-11-26 | 2022-03-18 | 中国石油天然气股份有限公司 | Casing liquid back-discharging device |
| CN114198074B (en) * | 2021-11-26 | 2024-04-12 | 中国石油天然气股份有限公司 | Casing liquid flowback device |
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Application publication date: 20210212 |