CN110878680A - Casing pipe lowering pressure-building one-way valve - Google Patents
Casing pipe lowering pressure-building one-way valve Download PDFInfo
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- CN110878680A CN110878680A CN201911027463.6A CN201911027463A CN110878680A CN 110878680 A CN110878680 A CN 110878680A CN 201911027463 A CN201911027463 A CN 201911027463A CN 110878680 A CN110878680 A CN 110878680A
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- valve body
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- casing pipe
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- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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 invention relates to a casing pipe pressure-building one-way valve. The method mainly solves the problems that ball throwing and pressure building can not be realized and manual wellhead grouting is needed in the existing casing running well completion construction. The method is characterized in that: the inner wall of the shell (1) is provided with a boss, the upper part of the boss is provided with a valve seat (4), the inner wall of the upper part of the valve seat (4) is provided with a conical surface, a lower valve body (3) is arranged in the valve seat (4), the upper part of the lower valve body (3) is in threaded connection with the upper valve body (2), and the outer wall of the upper valve body (2) is matched with the conical surface of the upper part of the valve seat (4; the center of the bottom of the lower valve body (3) is provided with a liquid inlet hole (c), and the side wall of the lower valve body (3) at the top of the liquid inlet hole (c) is provided with a plurality of inclined overflowing holes (d). The casing pipe setting pressure-holding one-way valve does not need to be thrown to hold pressure and does not need to be grouted for multiple times, and the casing pipe setting process is simplified.
Description
Technical Field
The invention relates to the field of oil and gas field drilling, in particular to a casing pipe running pressure-building one-way valve.
Background
In the current casing running well completion construction process, well completion tools such as a casing external packer, a two-stage cementing tool and the like need to be pressed to be opened, the ball pitching mode is used as a main habit, but part of the tools cannot pitch balls due to the limitation of the structure or the size; although the mode of adopting the lower part blind plate can suppress pressure, drilling fluid circulation can not be established, manual wellhead grouting is required, and time and labor are wasted.
Disclosure of Invention
In order to overcome the defects that ball injection pressure building cannot be realized and manual wellhead grouting is needed in the existing casing completion construction, the invention provides the casing setting pressure building one-way valve.
The technical scheme of the invention is as follows: a lower casing pipe pressure-building one-way valve comprises a shell, wherein a boss is arranged on the inner wall of the shell, a valve seat is arranged on the upper portion of the boss, a conical surface is arranged on the inner wall of the upper portion of the valve seat, a lower valve body is arranged inside the valve seat, the upper portion of the lower valve body is in threaded connection with the upper valve body, and the outer wall of the upper valve body is matched with the conical surface of the upper; the center of the bottom of the lower valve body is provided with a liquid inlet hole, and the side wall of the lower valve body at the top of the liquid inlet hole is provided with a plurality of inclined overflowing holes.
And a convex shoulder is arranged at the bottom of the lower valve body and clamped on the bottom surface of the valve seat.
The inclination angle of the overflowing hole is consistent with that of the inclined plane at the upper part of the valve seat.
The invention has the following beneficial effects: by adopting the scheme, when the lower casing pipe is normally circulated, drilling fluid enters the casing pipe through the liquid inlet hole of the lower valve body to push the valve body to ascend, and the overflowing hole is opened to establish circulation; when pressure is required to be held, the pump pressure is increased, the valve body moves downwards under the action of the pressure difference, and the upper pressure is increased when the overflowing hole is closed. The ball is not required to be thrown, and the paddle is not required to be grouted for many times, so that the casing running process is simplified, and the time and the labor are saved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a front view of a pressure build-up;
fig. 3 is a schematic view of the lower valve body.
In the figure, 1-shell, 2-upper valve body, 3-lower valve body, 4-valve seat, c-liquid inlet hole and d-overflowing hole.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 to 3, the casing pressure-building check valve comprises a shell 1, wherein a boss is arranged on the inner wall of the shell 1, a valve seat 4 is arranged on the upper portion of the boss, the bottom of the valve seat 4 is clamped on the boss, the upper portion of the valve seat is welded on the inner wall of the shell 1, and a sealing ring is arranged between the outer wall of the valve seat 4 and the shell 1. The inner wall of the upper part of the valve seat 4 is provided with a conical surface, the lower valve body 3 is arranged in the valve seat 4, the center of the bottom of the lower valve body 3 is provided with a liquid inlet hole c, the top of the liquid inlet hole c is not communicated with the top surface of the lower valve body 3, the side wall of the lower valve body 3 at the top of the liquid inlet hole c is provided with a plurality of inclined overflowing holes d, and the overflowing holes d are communicated with the liquid inlet hole c. The inclination angle of the overflowing hole d can be consistent with that of the upper inclined surface of the valve seat 4. The bottom of the lower valve body 3 is provided with a convex shoulder which is clamped on the bottom surface of the valve seat 4. The upper part of the lower valve body 3 is arranged in the upper valve body 2 and is in threaded connection with the upper valve body 2, and the outer surface of the upper valve body 2 is a conical surface and is matched with the conical surface at the upper part of the valve seat 4.
During assembly: after the lower valve body 3 penetrates into the valve seat 4, the upper valve body 2 and the lower valve body 3 are combined through threaded connection, the valve seat 4 is sleeved into the O-shaped ring and is arranged in the shell 1 after connection is completed, the lower portion of the valve seat is axially fixed through a shoulder of the shell 1, and the upper portion of the valve seat is axially fixed through welding.
During construction: when the lower casing pipe normally circulates, drilling fluid enters the casing pipe through a liquid inlet hole c at the lower part of the lower valve body 3 to push the upper valve body 2 and the lower valve body 3 to ascend, and a overflowing hole d at the upper part of the lower valve body 3 is communicated with the conical surface at the upper part of the valve seat 4 to establish circulation; when pressure is required to be suppressed, the pump pressure is increased, the upper valve body 2 and the lower valve body 3 move downwards under the action of pressure difference, the overflowing hole d in the upper part of the lower valve body 3 is closed, the valve seat 4 is sealed with the conical surface of the upper valve body 2, and the pressure of the upper part is increased to realize pressure suppression.
Claims (3)
1. The utility model provides a lower sleeve pipe suppress pressure check valve, includes casing (1), its characterized in that: the inner wall of the shell (1) is provided with a boss, the upper part of the boss is provided with a valve seat (4), the inner wall of the upper part of the valve seat (4) is provided with a conical surface, a lower valve body (3) is arranged in the valve seat (4), the upper part of the lower valve body (3) is in threaded connection with the upper valve body (2), and the outer wall of the upper valve body (2) is matched with the conical surface of the upper part of the valve seat (4; the center of the bottom of the lower valve body (3) is provided with a liquid inlet hole (c), and the side wall of the lower valve body (3) at the top of the liquid inlet hole (c) is provided with a plurality of inclined overflowing holes (d).
2. The casing running pressure build-up check valve according to claim 1, wherein: and a convex shoulder is arranged at the bottom of the lower valve body (3) and clamped on the bottom surface of the valve seat (4).
3. The casing pipe pressure build-up check valve according to claim 1 or 2, wherein: the inclined angle of the overflowing hole (d) is consistent with the inclined angle of the upper inclined plane of the valve seat (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027463.6A CN110878680A (en) | 2019-10-28 | 2019-10-28 | Casing pipe lowering pressure-building one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027463.6A CN110878680A (en) | 2019-10-28 | 2019-10-28 | Casing pipe lowering pressure-building one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110878680A true CN110878680A (en) | 2020-03-13 |
Family
ID=69728002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911027463.6A Pending CN110878680A (en) | 2019-10-28 | 2019-10-28 | Casing pipe lowering pressure-building one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110878680A (en) |
Citations (18)
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|---|---|---|---|---|
| CN2061235U (en) * | 1989-11-30 | 1990-08-29 | 张利斌 | Casing-pipe back-pressure valve for automatic grouting |
| US5890538A (en) * | 1997-04-14 | 1999-04-06 | Amoco Corporation | Reverse circulation float equipment tool and process |
| US6488092B1 (en) * | 2001-10-09 | 2002-12-03 | William N. Schoeffler | By-pass valve |
| US20100116503A1 (en) * | 2006-03-17 | 2010-05-13 | Gerald Leeb | Dual check valve |
| CN102061904A (en) * | 2010-11-20 | 2011-05-18 | 中国石油集团西部钻探工程有限公司 | Automatic grout valve of adjustable pressure difference type |
| CN202148881U (en) * | 2011-07-29 | 2012-02-22 | 牡丹江通用石油工具有限公司 | Arrow-shaped check valve |
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| US20130228344A1 (en) * | 2012-03-05 | 2013-09-05 | Weatherford/Lamb, Inc. | Apparatus and methods of running an expandable liner |
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| CN104329051A (en) * | 2014-10-31 | 2015-02-04 | 常熟市石油固井工具有限公司 | Self-filling flow cutter |
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| CN207315247U (en) * | 2017-10-18 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | A kind of self-priming float collar |
| CN108119095A (en) * | 2017-12-15 | 2018-06-05 | 中国石油集团西部钻探工程有限公司 | From grouting drilling liner cementing ball seat |
| CN207905771U (en) * | 2018-02-07 | 2018-09-25 | 中国石油集团西部钻探工程有限公司 | From grouting floating hoop |
| CN208502727U (en) * | 2018-05-31 | 2019-02-15 | 中国石油天然气集团有限公司 | Self-priming Pressure Block |
| CN209195350U (en) * | 2018-10-18 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of automatic grouting formula float collar |
-
2019
- 2019-10-28 CN CN201911027463.6A patent/CN110878680A/en active Pending
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|---|---|---|---|---|
| CN2061235U (en) * | 1989-11-30 | 1990-08-29 | 张利斌 | Casing-pipe back-pressure valve for automatic grouting |
| US5890538A (en) * | 1997-04-14 | 1999-04-06 | Amoco Corporation | Reverse circulation float equipment tool and process |
| US6488092B1 (en) * | 2001-10-09 | 2002-12-03 | William N. Schoeffler | By-pass valve |
| US20100116503A1 (en) * | 2006-03-17 | 2010-05-13 | Gerald Leeb | Dual check valve |
| US8800655B1 (en) * | 2010-02-01 | 2014-08-12 | Michael E. Bailey | Stage cementing tool |
| CN102061904A (en) * | 2010-11-20 | 2011-05-18 | 中国石油集团西部钻探工程有限公司 | Automatic grout valve of adjustable pressure difference type |
| CN202148881U (en) * | 2011-07-29 | 2012-02-22 | 牡丹江通用石油工具有限公司 | Arrow-shaped check valve |
| US20130228344A1 (en) * | 2012-03-05 | 2013-09-05 | Weatherford/Lamb, Inc. | Apparatus and methods of running an expandable liner |
| CN202914024U (en) * | 2012-11-12 | 2013-05-01 | 天津大港油田钻采技术开发公司 | Float collar |
| 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 |
| CN204024592U (en) * | 2014-09-05 | 2014-12-17 | 陕西延长石油(集团)有限责任公司研究院 | Bruising shut-in valve in down-hole for well cementation |
| CN104329051A (en) * | 2014-10-31 | 2015-02-04 | 常熟市石油固井工具有限公司 | Self-filling flow cutter |
| CN105888610A (en) * | 2016-06-22 | 2016-08-24 | 长江大学 | Arrow-shaped check valve |
| CN207315247U (en) * | 2017-10-18 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | A kind of self-priming float collar |
| CN108119095A (en) * | 2017-12-15 | 2018-06-05 | 中国石油集团西部钻探工程有限公司 | From grouting drilling liner cementing ball seat |
| CN207905771U (en) * | 2018-02-07 | 2018-09-25 | 中国石油集团西部钻探工程有限公司 | From grouting floating hoop |
| CN208502727U (en) * | 2018-05-31 | 2019-02-15 | 中国石油天然气集团有限公司 | Self-priming Pressure Block |
| CN209195350U (en) * | 2018-10-18 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of automatic grouting formula float collar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220117 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Applicant after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Applicant after: CHINA NATIONAL PETROLEUM Corp. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Applicant before: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200313 |
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| RJ01 | Rejection of invention patent application after publication |