CN105888610B - Arrow-shaped check valve - Google Patents
Arrow-shaped check valve Download PDFInfo
- Publication number
- CN105888610B CN105888610B CN201610455231.0A CN201610455231A CN105888610B CN 105888610 B CN105888610 B CN 105888610B CN 201610455231 A CN201610455231 A CN 201610455231A CN 105888610 B CN105888610 B CN 105888610B
- Authority
- CN
- China
- Prior art keywords
- valve body
- flechette
- arrow
- hole
- check valve
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 29
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 32
- 230000000694 effects Effects 0.000 abstract description 10
- 239000002002 slurry Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray 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
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a kind of arrow-shaped check valve, upper valve body and lower valve body including interconnection, and through-hole is equipped in upper valve body, is successively arranged tapered surface and the first spline surface in the bottom of through-hole；Equipped with along lower valve body, flechette-type spool, flechette-type spool top are correspondingly provided with the frustum with tapered surface sealing cooperation, the second spline surface cooperated with the sealing of the first spline surface in axial sliding in lower valve body.A kind of arrow-shaped check valve provided by the invention under the premise of not increasing stroke and outer diameter, increases by 1.5 ~ 2 times that area of passage is more than original area of passage by using the structure of spline surface.The assembled scheme of tapered surface and the spline surface cooperation of use, improve sealing effect, in particular by the program, no setting is required additional sealing element, such as the structures such as sealing ring, sealing drum of rubber material, the problem of so as to avoid sealing element by high-pressure slurry Fast Wearing, improve the service life of arrow-shaped check valve.
Description
Technical field
The present invention relates to petroleum, the field of tool of natural gas extraction, drilling well, especially a kind of flechette-type non-return for drilling tool
Valve.
Background technique
It is complicated and changeable due to stratum in drilling platforms drilling well work, stratum high pressure can be usually encountered in drilling process
Fluid influences drillng operation safety and drilling efficiency if being possible to that well kick or blowout occurs without reliable spraying-preventing system.
Arrow-shaped check valve is the jet-preventing tool in kind of drill string, is connected in drill string, when encountering high-pressure oil-gas layer and pressing upwards, can be driven
Flechette-type spool, which is moved up, prevents blowout and well kick with valve seat gluing, sealing, closing drill string internal channel.Flechette-type stops in the prior art
The shortcomings that returning valve is:
1, due to the pressure cap presence for fixed valve base, the channel of drilling fluid is limited, the mistake of arrow-shaped check valve is reduced
Flow area generates larger resistance, keeps the pressure drop of mud larger, wastes energy, influences drilling efficiency.
2, be prone to wear under the action of being used to the rubber circle that seals in high-voltage high-speed fluid on flechette-type spool failure or
It falls off, influences the sealing effect of flechette-type spool.
3, since the pressure value of drilling fluid floats up and down, the spring of flechette-type spool is being beated always in normal work, this
It is the service life for affecting spring, also unfavorable to well control operation.
203362113 U of Chinese patent literature CN discloses a kind of arrow-shaped check valve, by flechette-type spool and valve seat
Hard alloy sealing shroud, the short problem of Lai Gaishan service life are set, but structure is complex, and still unresolved area of passage
The problem of small and flechette-type spool bounce.
102635329 A of Chinese patent literature CN discloses a kind of Novel double-seal arrow-shaped check valve, the rubber tube of setting
It can be improved sealing effect, prolong the service life.Valve seat and pressure cap are integrated into upper valve body, expand fluid channel.It uses
Less O-ring seals.But the problem that fluid channel is larger there are still pressure drop.Effect of the rubber tube of setting in high-pressure slurry
Under, abrasion is very fast, loses the effect of sealing quickly.The safe snap ring being arranged is due to fault of construction, when well kick or blowout occurs,
Safe snap ring is easy to lock flechette-type spool, it is difficult to disengage.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of arrow-shaped check valves, can be improved area of passage, reduce resistance
Power improves sealing effect, prolongs the service life, in the preferred scheme, can be avoided during the work time, the bounce of flechette-type spool
The problem of.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of arrow-shaped check valve, including be mutually connected
The upper valve body and lower valve body connect, upper valve body is interior to be equipped with through-hole, is successively arranged tapered surface and the first spline surface in the bottom of through-hole；
It is equipped at the top of lower valve body flechette-type spool in axial sliding, flechette-type spool and is correspondingly provided with and tapered surface in lower valve body
The frustum for sealing cooperation, the second spline surface with the sealing cooperation of the first spline surface.
In preferred scheme, first spline surface is that the inner wall of cylindrical through-hole is equipped with multiple arc-shaped protrusions or recessed
It falls into.
In preferred scheme, second spline surface is that the outer wall of cylindroid is equipped with multiple arc-shapeds recess or protrusion.
In preferred scheme, chamfering or rounding are equipped in the first spline surface and the second spline surface upper end.
In preferred scheme, pedestal is additionally provided in lower valve body, base center is equipped with pilot hole, and the bottom of flechette-type spool is set
There is undergauge section, undergauge section is slided in pilot hole, and the first spring is equipped in undergauge section, and the first spring is located at the head of flechette-type spool
Between portion bottom surface and pedestal upper surface.
In preferred scheme, the head of flechette-type spool is located at that the expanding overcurrent of lower valve body is intracavitary, and pedestal was fixedly mounted on
The bottom position of chamber is flowed, pedestal crosses runner equipped with annular, crosses runner and is connected to by least one side port with overcurrent chamber.
In preferred scheme, at least one pedestal end face through-hole being connected to runner excessively is additionally provided at the top of pedestal.
In preferred scheme, the pedestal end face through-hole is arcuate socket.
In preferred scheme, it is equipped with the through-hole perpendicular to axis in the undergauge section of flechette-type spool, through-hole both ends are movably equipped with
Positioning head with bulb is equipped with second spring between positioning head；
Spherical card slot corresponding with positioning head is equipped in pilot hole inner wall.
In preferred scheme, when positioning head is caught in spherical card slot, flechette-type spool and upper valve body are in discrete state.
A kind of arrow-shaped check valve provided by the invention is not increasing stroke and outer diameter by using the structure of spline surface
Under the premise of, increase by 1.5 ~ 2 times that area of passage is more than original area of passage.The combination side of tapered surface and the spline surface cooperation of use
Case improves sealing effect, in particular by the program, no setting is required additional sealing element, for example, rubber material sealing ring,
The structures such as sealing drum the problem of so as to avoid sealing element by high-pressure slurry Fast Wearing, improve the use of arrow-shaped check valve
Service life.The cooperation of the spherical positioning head of setting and spherical card slot, can lock the position of flechette-type spool in normal work, from
And the bounce of flechette-type spool during the work time is avoided, the springing of spring is reduced, the use of arrow-shaped check valve is further extended
Service life.Always runner will not be sealed when normal work, it is lower to bore smoothly, pass through convenient for drilling fluid.Meanwhile when blowout and well kick,
It under the action of blowout high pressure liquid, and can prevent downhole fluid from flowing up with automatic-sealed, be conducive to well control operation.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is main view overall structure schematic cross-sectional view of the invention.
Fig. 2 is the partial enlargement diagram in Fig. 1 at B.
Fig. 3 is the structural schematic diagram of flechette-type spool in the present invention.
Fig. 4 is the schematic diagram in the present invention at arrow-shaped check valve minimum area of passage.
Fig. 5 is the structural schematic diagram of pedestal in the present invention.
Fig. 6 is the overlooking structure diagram of pedestal in the present invention.
In figure: upper valve body 1, lower valve body 2, flechette-type spool 3, the first spring 4, pedestal 5, positioning head 6, second spring 7, guiding
Hole 8, the second spline surface 9, the first spline surface 10, through-hole 11, spherical card slot 12, pedestal end face through-hole 13, side port 14, tapered surface
15, frustum 16, overcurrent chamber 17.
Specific embodiment
In Fig. 1 ~ 6, a kind of arrow-shaped check valve, upper valve body 1 and lower valve body 2 including interconnection are equipped in upper valve body 1
Through-hole is successively arranged the tapered surface 15 and first spline surface 10 expanding relative to through-hole in the bottom of through-hole；
It is equipped in lower valve body 2 and is correspondingly provided with and bores at the top of the flechette-type spool 3 in axial sliding of lower valve body 2, flechette-type spool 3
The frustum 16 of the sealing cooperation of shape face 15, the second spline surface 9 with the sealing cooperation of the first spline surface 10.
In preferred scheme, first spline surface 10 be the inner wall of cylindrical through-hole be equipped with multiple arc-shapeds protrusions or
Recess.The structure of multiple arc-shapeds recess is equipped in this example using the inner wall of through-hole.
In preferred scheme, second spline surface 9 is that the outer wall of cylindroid is equipped with multiple arc-shapeds recess or protrusion.
The structure of multiple arc-shaped protrusions is equipped in this example using the outer wall of cylindroid.
It, in normal work, can be in the premise for not changing other parameters using the structure of spline surface by above-mentioned structure
Under, increase area of passage, referring to fig. 4 shown in, be especially arranged in spline under the structure of the through-hole wall of upper valve body 1,
Area of passage increases larger.When there is blowout and well kick, flechette-type spool 3 and upper valve body 1 are formed and are sealed, wherein frustum 16 and cone
Shape face 15 forms second level sealing, and the first spline surface 10 and the second spline surface 9 form first order sealing, although the first order is sealed into
Ensure to slide it is smooth and there are lesser gap, but pass through first order sealing and remain to largely reduce blowout and well kick
When pressure, sealed using the second level of frustum 16 and tapered surface 15, can realize the closure to blowout and well kick completely,
Without the sealing ring being additionally arranged.Service life is extended, the difficulty of processing of part is also reduced.
In preferred scheme, chamfering or rounding are equipped in the first spline surface 10 and 9 upper end of the second spline surface.Thus structure,
Using the principle of similar wedging, can also further be mentioned by chamfering or rounding between a spline surface 10 and the second spline surface 9
High sealing effect.
Preferred scheme such as Fig. 5, in 6, pedestal 5 is additionally provided in lower valve body 2,5 center of pedestal is equipped with pilot hole 8, flechette-type
The bottom of spool 3 is equipped with undergauge section, and undergauge section is slided in pilot hole 8, and the first spring 4, the first spring 4 are equipped in undergauge section
Between 3 head bottom surface of flechette-type spool and 5 upper surface of pedestal.Thus structure, the first spring 4 tend to make flechette-type spool 3 will be upper
The through-hole of valve body 1 blocks, and not has high-pressure slurry to depress flechette-type spool 3, opens runner, thus structure, can be in mud pressure
When power deficiency, upper valve body 1 is sealed, avoids the occurrence of the situation of blowout and well kick.
In preferred scheme such as Fig. 5, the head of flechette-type spool 3 is located in the expanding overcurrent chamber 17 of lower valve body 2, and pedestal 5 is consolidated
Dingan County is mounted in the bottom position of overcurrent chamber 17, and pedestal 5 crosses runner 18 equipped with annular, crosses runner 18 and passes through at least one side port
14 are connected to overcurrent chamber 17.Thus structure passes through convenient for mud.
Preferred scheme such as Fig. 6, in 3, the top of pedestal 5 is additionally provided at least one and pedestal end face for crossing runner 18 and being connected to
Through-hole 13.Thus structure, when there is blowout and well kick, liquid stream can be with biggish 3 top of compression shock flechette-type spool
The bottom surface of enlarged head forms upward thrust.To drive flechette-type spool 3 to block runner.
In preferred scheme such as Fig. 6, the pedestal end face through-hole 13 is arcuate socket.Thus structure increases blowout and well
Impact of the liquid stream to flechette-type spool 3 under the situation gushed.
In preferred scheme such as Fig. 1 ~ 3, the through-hole 11 perpendicular to axis, through-hole 11 are equipped in the undergauge section of flechette-type spool 3
Both ends are movably equipped with the positioning head 6 with bulb, are equipped with second spring 7 between positioning head 6；
Spherical card slot 12 corresponding with positioning head 6 is equipped in 8 inner wall of pilot hole.Thus structure, when operating, in mud
Pressure under, 3 downlink of flechette-type spool, when the positioning head 6 with round end reaches the position of spherical card slot 12, in second spring 7
Under effect, positioning head 6 is snapped onto spherical card slot 12, to the position of flechette-type spool 3 be locked, even if there are waves for mud pressure
Dynamic, flechette-type spool 3 will not beat under the locking effect of positioning head 6, to extend the service life of the first spring 4.Work as well
Under the situation of spray and well kick, under the impact of liquid stream, positioning head 6 and spherical card slot 12 are disengaged, so that flechette-type spool 3 is in the first bullet
Runner is blocked under the action of spring 4.
In preferred scheme, when positioning head 6 is caught in spherical card slot 12, flechette-type spool 3 and upper valve body 1 are in discrete state.
Thus structure passes through convenient for mud.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this Shen
Please in embodiment and embodiment in feature in the absence of conflict, can mutual any combination.Protection model of the invention
The technical solution that should be recorded with claim is enclosed, the equivalent replacement side of technical characteristic in the technical solution recorded including claim
Case is protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (8)
1. a kind of arrow-shaped check valve, upper valve body (1) and lower valve body (2) including interconnection, it is characterized in that: in upper valve body (1)
Equipped with through-hole, tapered surface (15) and the first spline surface (10) are successively arranged in the bottom of through-hole；
Equipped with along lower valve body (2), flechette-type spool (3), flechette-type spool (3) top are correspondingly provided in axial sliding in lower valve body (2)
With the frustum (16) of tapered surface (15) sealing cooperation, and the second spline surface (9) with the first spline surface (10) sealing cooperation；
Chamfering or rounding are equipped in the first spline surface (10) and the second spline surface (9) upper end；
It is additionally provided with pedestal (5) in lower valve body (2), pedestal (5) center is equipped with pilot hole (8), and the bottom of flechette-type spool (3) is equipped with
Undergauge section, undergauge section sliding in pilot hole (8), is equipped with the first spring (4) in undergauge section, and the first spring (4) is located at flechette-type
Between the head bottom surface and pedestal (5) upper surface of spool (3).
2. a kind of arrow-shaped check valve according to claim 1, it is characterized in that: first spline surface (10) is in cylindricality
Through-hole inner wall be equipped with multiple arc-shapeds it is raised or sunken.
3. a kind of arrow-shaped check valve according to claim 1, it is characterized in that: second spline surface (9) is cylindroid
Outer wall be equipped with multiple arc-shapeds be recessed or protrusion.
4. a kind of arrow-shaped check valve according to claim 1, it is characterized in that: the head of flechette-type spool (3) is located at lower valve body
(2) in expanding overcurrent chamber (17), pedestal (5) is fixedly mounted on the bottom position of overcurrent chamber (17), and pedestal (5) is equipped with annular
Cross runner (18), cross runner (18) and be connected to overcurrent chamber (17) by least one side port (14).
5. a kind of arrow-shaped check valve according to claim 4, it is characterized in that: being additionally provided at least one at the top of pedestal (5)
The pedestal end face through-hole (13) being connected to runner (18) excessively.
6. a kind of arrow-shaped check valve according to claim 5, it is characterized in that: the pedestal end face through-hole (13) is arc
Hole.
7. a kind of arrow-shaped check valve according to claim 1, it is characterized in that: the undergauge section in flechette-type spool (3) is equipped with and hangs down
Directly in the through-hole of axis (11), through-hole (11) both ends are movably equipped with the positioning head (6) with bulb, and positioning head is equipped between (6)
Second spring (7)；
Spherical card slot (12) corresponding with positioning head (6) is equipped in pilot hole (8) inner wall.
8. a kind of arrow-shaped check valve according to claim 7, it is characterized in that: when positioning head (6) are caught in spherical card slot (12),
Flechette-type spool (3) and upper valve body (1) are in discrete state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610455231.0A CN105888610B (en) | 2016-06-22 | 2016-06-22 | Arrow-shaped check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610455231.0A CN105888610B (en) | 2016-06-22 | 2016-06-22 | Arrow-shaped check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105888610A CN105888610A (en) | 2016-08-24 |
| CN105888610B true CN105888610B (en) | 2019-04-19 |
Family
ID=56730866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610455231.0A Active CN105888610B (en) | 2016-06-22 | 2016-06-22 | Arrow-shaped check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105888610B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837223A (en) * | 2017-02-16 | 2017-06-13 | 北京矿联地热能工程设计研究院有限公司 | For the counnter attack mud component of drilling well drilling bar |
| CN108507893B (en) * | 2018-03-28 | 2021-04-27 | 长江大学 | Erosion device and sample erosion wear rate measuring apparatus |
| CN110878680A (en) * | 2019-10-28 | 2020-03-13 | 大庆石油管理局有限公司 | Casing pipe lowering pressure-building one-way valve |
| CN113882820B (en) * | 2021-12-08 | 2022-02-22 | 西南石油大学 | Blowout prevention valve in drilling tool |
| CN114482906B (en) * | 2022-01-30 | 2023-08-08 | 陕西省煤田地质集团有限公司 | Packer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829952A (en) * | 1995-05-19 | 1998-11-03 | Shadden; Darrel W. | Check valve with a reversible valve ball and seat |
| CN201155321Y (en) * | 2008-02-18 | 2008-11-26 | 杨宏伟 | Arrow type float-valve |
| CN102635329A (en) * | 2012-03-30 | 2012-08-15 | 西南石油大学 | Novel double-seal arrow-shaped check valve |
| CN204002658U (en) * | 2014-07-22 | 2014-12-10 | 中国石油集团渤海钻探工程有限公司 | Arrow type flap valve |
| CN205689172U (en) * | 2016-06-22 | 2016-11-16 | 长江大学 | arrow-shaped check valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010147852A1 (en) * | 2009-06-17 | 2010-12-23 | Schlumberger Canada Limited | Compliant dart-style reverse-flow check valve |
-
2016
- 2016-06-22 CN CN201610455231.0A patent/CN105888610B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829952A (en) * | 1995-05-19 | 1998-11-03 | Shadden; Darrel W. | Check valve with a reversible valve ball and seat |
| CN201155321Y (en) * | 2008-02-18 | 2008-11-26 | 杨宏伟 | Arrow type float-valve |
| CN102635329A (en) * | 2012-03-30 | 2012-08-15 | 西南石油大学 | Novel double-seal arrow-shaped check valve |
| CN204002658U (en) * | 2014-07-22 | 2014-12-10 | 中国石油集团渤海钻探工程有限公司 | Arrow type flap valve |
| CN205689172U (en) * | 2016-06-22 | 2016-11-16 | 长江大学 | arrow-shaped check valve |
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| Publication number | Publication date |
|---|---|
| CN105888610A (en) | 2016-08-24 |
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Effective date of registration: 20220825 Address after: 1B, No. 13, Jingsheng South 4th Street, Jinqiao Science and Technology Industrial Base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing 101102 Patentee after: BEIJING TIANQING LIDU TECHNOLOGY CO.,LTD. Address before: 434023 Yangtze University, 1 South Ring Road, Hubei, Jingzhou Patentee before: Yangtze University |
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Effective date of registration: 20221017 Address after: 157013 Economic and Technological Development Zone for Russia, Yangming District, Mudanjiang City, Heilongjiang Province Patentee after: MUDANJIANG XINBEIFANG PETROLEUM DRILLING TOOL Co.,Ltd. Patentee after: Mudanjiang chenlai petroleum drilling and production equipment research and Development Co.,Ltd. Address before: 1B, No. 13, Jingsheng South 4th Street, Jinqiao Science and Technology Industrial Base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing 101102 Patentee before: BEIJING TIANQING LIDU TECHNOLOGY CO.,LTD. |
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