CN106223899B - Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve - Google Patents
Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve Download PDFInfo
- Publication number
- CN106223899B CN106223899B CN201610838779.3A CN201610838779A CN106223899B CN 106223899 B CN106223899 B CN 106223899B CN 201610838779 A CN201610838779 A CN 201610838779A CN 106223899 B CN106223899 B CN 106223899B
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- China
- Prior art keywords
- outer tube
- annular space
- inner tube
- passing valve
- killing fluid
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- 238000000034 method Methods 0.000 title claims description 7
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 125000004122 cyclic group Chemical group 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining 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
-
- 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
- E21B2200/05—Flapper valves
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Check Valves (AREA)
Abstract
The present invention relates to a kind of single current by-passing valve, including outer tube and inner tube, the outer tube sleeve is set to outside said inner tube, and said inner tube is connect by fixed frame with the outer tube；Annular space is formed between the outer surface of said inner tube and the inner surface of the outer tube；Through-hole is offered on the outer tube wall, the through-hole is to be connected to the annular space and external mineshaft annulus；Check valve is provided in the annular space, the check valve is connect by fixed frame with said inner tube and the outer tube.Check valve is set on by-passing valve, and when kill-job controls the circulation path of well killing fluid, makes well killing fluid mixing sufficiently, uniformly, the well killing fluid of position below by-passing valve obtains Efficient Cycle, kill-job effect is substantially improved, so that the ability of by-passing valve equilibrium strata pressure gets a promotion, oil/gas well production efficiency is improved.It realizes full pit shaft kill-job, greatly reduces well control risk.
Description
[technical field]
The invention belongs to oil gas well mining technical fields, are related to a kind of single current by-passing valve in more detail and using single stream
The method of formula by-passing valve progress kill-job.
[background technique]
By-passing valve is arranged in the middle and upper part of entire tubing string, and well killing fluid flows through by-passing valve when kill-job, recycles from by-passing valve top,
Well killing fluid flows through the hole on by-passing valve and reaches mineshaft annulus, and flow upwards out, and well killing fluid causes kill-job to not tubing string lower part
Liquid mixing is difficult, and circulating degasification is not thorough, i.e. the well killing fluid of position below by-passing valve cannot get Efficient Cycle, cannot increase well
Add specific gravity, causes kill-job effect bad.
[summary of the invention]
The purpose of the present invention is to provide a kind of single current by-passing valves, to solve well killing fluid mentioned above in the background art
It is recycled from by-passing valve top, does not arrive tubing string lower part, the problem of well killing fluid of position cannot get Efficient Cycle below by-passing valve.
To achieve the above object, the invention provides the following technical scheme:
A kind of single current by-passing valve, including outer tube and inner tube, the outer tube sleeve are set to outside said inner tube, and said inner tube passes through
Fixed frame is connect with the outer tube；The first annular space is formed between the outer surface of said inner tube and the inner surface of the outer tube；It is described outer
Through-hole is offered on tube wall, the through-hole is to be connected to first annular space and the second annular space on external pit shaft；Described first
Check valve is provided in annular space, the check valve is connect by fixed frame with said inner tube and the outer tube.
Further, the check valve includes one-way valve seat, spool, valve core reseting spring and cyclic annular supporting positive cover；The ring
Shape supporting positive cover and the one-way valve seat are embedded between said inner tube and the outer tube；The spool is located at the one-way valve seat
Between the cyclic annular supporting positive cover；The lower end of the valve core reseting spring connects the spool, the valve core reseting spring it is upper
The end connection cyclic annular supporting positive cover.
Further, the through-hole is obliquely installed upwards, and quantity be it is multiple, it is more in order to enhance stretching resistance and twisting resistance
A through-hole is spirally distributed on the wall surface of the outer tube.
Further, the one-way valve seat lower end is provided with lining pipe, and the lining pipe and the outer tube are clamped.
The present invention also provides a kind of methods for carrying out kill-job using single current by-passing valve, comprising the following steps:
S1: well killing fluid is prepared；
S2: well killing fluid is injected from slush pump to the second annular space；
S3: well killing fluid enters the first annular space from through-hole, and by-passing valve is closed；
S4: well killing fluid downlink, from bottom, hydrophthalmia enters tubing string；
S5: well killing fluid is circulated up out well head by tubing string and enters mud ditch；
S6: one circulation terminates, then executes step S1.
The beneficial effects of the present invention are: check valve is arranged on by-passing valve, when kill-job, controls the circulation path of well killing fluid, makes
Sufficiently, uniformly, the well killing fluid of position below by-passing valve obtains Efficient Cycle for well killing fluid mixing, substantially improves kill-job effect, thus
The ability of by-passing valve equilibrium strata pressure gets a promotion, and oil/gas well production efficiency improves.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of single current by-passing valve provided by the invention；
Fig. 2 is the A-A cross-sectional view in Fig. 1；
Fig. 3 is the partial enlarged view of single current bypass valve closing state in Fig. 1；
Fig. 4 is the partial enlarged view of single current bypass the valve opening state in Fig. 1.
The reference numerals are as follows:
1- outer tube；2- inner tube；3- through-hole；4- check valve；41- one-way valve seat；42- spool；43- valve core reseting spring；44-
Cyclic annular supporting positive cover；5- lining pipe.
[specific embodiment]
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
As shown in Figures 1 to 4, the present invention provides a kind of single current by-passing valve, including outer tube 1 and inner tube 2,1 set of outer tube
Outside inner tube 2, inner tube 2 is connect by fixed frame with outer tube 1；First is formed between the outer surface of inner tube 2 and the inner surface of outer tube 1
Annular space；Through-hole is offered on 2 wall of outer tube, through-hole is to be connected to the first annular space and the second annular space on external pit shaft；First annular space
It is inside provided with check valve 4, check valve 4 is connect by fixed frame with inner tube 2 and outer tube 1.
When needing kill-job, as shown in figures 1 and 3, well killing fluid is injected from the second annular space on pit shaft, well killing fluid is from outer tube
Through-hole 3 on 1 flows into the first annular space between outer tube 1 and inner tube 2, and check valve 4 closes the stream in the first annular space after being impacted
Body access, well killing fluid can not pass through from by-passing valve 4；Well killing fluid moves to tubing string bottom from the second annular space, well killing fluid is uniformly mixed,
Sufficiently, the well killing fluid of position below by-passing valve obtains Efficient Cycle, and kill-job effect is good, achievees the purpose that equilibrium strata pressure.Nothing
When needing kill-job, as shown in Fig. 2, no longer injecting well killing fluid to the second annular space, check valve 4 is returned to opening state, normal operation.
As the improvement of present embodiment, check valve 4 includes one-way valve seat 41, spool 42, valve core reseting spring 43 and ring
Shape supporting positive cover 44；Cyclic annular supporting positive cover 44 and one-way valve seat 41 are embedded between inner tube 2 and outer tube 1；Spool 42 is located at check valve
Between seat 41 and cyclic annular supporting positive cover 44；The lower end of valve core reseting spring 44 connects spool 42, and the upper end of valve core reseting spring 44 connects
Connect cyclic annular supporting positive cover 44.
When kill-job, 42 stress of spool on check valve 4 is moved downward, and valve core reseting spring 43 is elongated, and spool 42 moves
It is limited stopping just when to one-way valve seat 41, the fluid passage in the first annular space is blocked；Cyclic annular supporting positive cover 44 is to limit
The movement of 42 horizontal direction of spool guarantees that spool 42 completely closes the fluid passage in the first annular space.Stop injection well killing fluid
When, the well killing fluid impact force for acting on spool 42 disappears, and valve core reseting spring 43 is sprung back, and spool 42 also moves upwards, the first ring
Fluid passage in sky is opened, and normal operation is carried out.
Through-hole 3 is obliquely installed upwards, and quantity be it is multiple, in order to enhance stretching resistance and twisting resistance, multiple through-holes 3 are helically
Shape is distributed on the wall surface of outer tube 1.
As the improvement of embodiment, 41 lower end of one-way valve seat is provided with lining pipe 5, and lining pipe 5 and outer tube 1 are clamped.
The present invention also provides a kind of methods for carrying out kill-job using single current by-passing valve, comprising the following steps:
S1: well killing fluid is prepared；
S2: well killing fluid is injected from second annular space of the slush pump on pit shaft；
S3: well killing fluid enters the first annular space from through-hole 3, and by-passing valve is closed；
S4: well killing fluid downlink, from bottom, hydrophthalmia enters tubing string；
S5: well killing fluid is circulated up out well head by tubing string and enters mud ditch；
S6: one circulation terminates, then executes step S1.
The present invention is not limited to above-mentioned preferred forms, and those of ordinary skill in the art may be used under the inspiration of the present invention
Obtain other various forms of products, however, make any variation in its shape or structure, it is all with same as the present application
Or similar technical solution, it is within the scope of the present invention.
Claims (4)
1. a kind of single current by-passing valve, including outer tube (1) and inner tube (2), the outer tube (1) are sheathed on said inner tube (2) outside, institute
Inner tube (2) are stated to connect by fixed frame with the outer tube (1)；The outer surface of said inner tube (2) and the inner surface of the outer tube (1)
Between form the first annular space；Offered through-hole (3) on outer tube (1) wall, the through-hole (3) to be connected to first annular space and
The second annular space on external pit shaft；It is characterized in that, being provided with check valve (4) in first annular space, the check valve (4) is logical
Fixed frame is crossed to connect with said inner tube (2) and the outer tube (1)；The check valve (4) includes one-way valve seat (41), spool
(42), valve core reseting spring (43) and cyclic annular supporting positive cover (44)；The ring-type supporting positive cover (44) and the one-way valve seat (41) are equal
It is embedded between said inner tube (2) and the outer tube (1)；The spool (42) is located at the one-way valve seat (41) and the ring-type
Between supporting positive cover (44)；The lower end of the valve core reseting spring (43) connects the spool (42), the valve core reseting spring
(43) the upper end connection cyclic annular supporting positive cover (44).
2. single current by-passing valve according to claim 1, which is characterized in that the through-hole (3) is obliquely installed upwards, and number
It is multiple for measuring, and multiple through-holes (3) are spirally distributed on the wall surface of the outer tube (1).
3. single current by-passing valve according to claim 1 or 2, which is characterized in that one-way valve seat (41) the lower end setting
Have lining pipe (5), the lining pipe (5) and the outer tube (1) are clamped.
4. a kind of method for carrying out kill-job using any single current by-passing valve of claim 1-3, which is characterized in that including
Following steps:
S1: well killing fluid is prepared；
S2: well killing fluid is injected from slush pump to the second annular space；
S3: well killing fluid enters the first annular space from through-hole (3), and single current by-passing valve is closed；
S4: well killing fluid downlink, from bottom, hydrophthalmia enters tubing string；
S5: well killing fluid is circulated up out well head by tubing string and enters mud ditch；
S6: one circulation terminates, then executes step S1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838779.3A CN106223899B (en) | 2016-09-21 | 2016-09-21 | Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838779.3A CN106223899B (en) | 2016-09-21 | 2016-09-21 | Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106223899A CN106223899A (en) | 2016-12-14 |
| CN106223899B true CN106223899B (en) | 2019-01-18 |
Family
ID=58076518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610838779.3A Active CN106223899B (en) | 2016-09-21 | 2016-09-21 | Single current by-passing valve and the method for carrying out kill-job using single current by-passing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106223899B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012878B (en) * | 2022-06-30 | 2023-06-23 | 西南石油大学 | Sulfur-containing gas well non-stop inhibitor filling system based on double-layer pipe |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0307237D0 (en) * | 2003-03-28 | 2003-04-30 | Smith International | Wellbore annulus flushing valve |
| CN102418496B (en) * | 2011-08-17 | 2014-01-22 | 长沙市罡拓能源科技有限公司 | Self-balanced underground full-bore check valve |
| CN205064946U (en) * | 2015-09-09 | 2016-03-02 | 中国石油化工股份有限公司 | Multifunctional check valve |
| CN205172487U (en) * | 2015-10-30 | 2016-04-20 | 天津立林石油机械有限公司 | One -way bypass valve is used to screw rod drilling tool |
| CN205089283U (en) * | 2015-11-09 | 2016-03-16 | 中国石油集团川庆钻探工程有限公司 | One -way formula is closing well recycle valve in pit |
| CN206111140U (en) * | 2016-09-21 | 2017-04-19 | 库尔勒施得石油技术服务有限公司 | Single current bypass valve |
-
2016
- 2016-09-21 CN CN201610838779.3A patent/CN106223899B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106223899A (en) | 2016-12-14 |
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