CN110424919B - Top-proof blowout-proof tool for water well - Google Patents
Top-proof blowout-proof tool for water well Download PDFInfo
- Publication number
- CN110424919B CN110424919B CN201910353226.2A CN201910353226A CN110424919B CN 110424919 B CN110424919 B CN 110424919B CN 201910353226 A CN201910353226 A CN 201910353226A CN 110424919 B CN110424919 B CN 110424919B
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- CN
- China
- Prior art keywords
- sleeve
- key
- central tube
- lock sleeve
- lock
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 230000002265 prevention Effects 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 101100293261 Mus musculus Naa15 gene Proteins 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010865 sewage 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- 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
- E21B33/12—Packers; Plugs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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)
- Pipe Accessories (AREA)
Abstract
The top-proof blowout-proof tool for the water well comprises an upper joint, an upper outer sleeve, a lower outer sleeve and a central pipe, and is characterized in that a lock sleeve is connected between the upper outer sleeve and the lower outer sleeve in a threaded manner, a turning plate seat is fixedly connected to the lower end of the upper joint, and a turning plate is connected with the turning plate seat through a pin shaft and a torsion spring; the inner surface of the lock sleeve and the outer surface of the central tube are provided with opposite key grooves; the front end of the key sleeve is provided with a key matched with the key grooves of the lock sleeve and the central tube, and the key sleeve is connected to the central tube through a pin; the outer surface of the central tube is provided with an L-shaped groove, the inner surface of the lock sleeve is provided with a key, and the key of the lock sleeve is positioned at the innermost end of the L-shaped groove of the central tube to axially lock the L-shaped groove and the key. The oil pipe blowout prevention device for the secondary operation of the water well is connected to the upper end of the packer or the upper end of the injection allocation device, can be used in multiple stages, and can seal the oil pipe to achieve the blowout prevention function; the phenomenon of jacking pipe caused by overhigh bottom hole pressure is prevented; meets the requirements of environmental protection and improves the working environment. Meanwhile, the operation is simple.
Description
Technical Field
The invention belongs to oil extraction well equipment, in particular to a top-proof blowout-proof tool for a water well.
Background
With further development of oil and gas fields, oil-water wells in oil fields are overhauled more and more frequently, and then the anti-blowout measures in oil pipes for secondary operation of water injection wells are particularly outstanding, and the modes of secondary anti-blowout ball seats, plugging devices, anti-backflow injection allocation devices and the like are mainly adopted for many years. However, because the downhole tool of the water injection well has long service time, scaling and sand accumulation are easy to occur in the polymer injection well and the ternary well, so that the secondary blowout prevention ball seat cannot be released; the blanking plug also needs to clean the well and press; the backflow prevention injection allocation device also has the phenomena of no effect after scaling and the like. In addition, these conventional tools increase the working process, which lengthens the working cycle and increases the working cost.
Disclosure of Invention
The invention aims to solve the problems and provide a water well top-spraying-preventing tool which is used for preventing oil pipes of secondary operation of a water well from being sprayed, is connected to the upper end of a packer or the upper end of an injection allocation device, can be used in multiple stages, and can seal the oil pipes to achieve the spraying-preventing function during the secondary operation; the tool is connected to the upper end of the packer, has a pressure relief function, and prevents the phenomenon of jacking pipe caused by overhigh bottom hole pressure; the pollution on the ground is reduced to the greatest extent, the environment-friendly requirement is met, and the operation environment is improved.
The invention is realized by the following technical scheme: including top connection, go up the overcoat, overcoat and center tube down, characterized by: the upper outer sleeve is provided with a pressure relief hole, the lower end of the upper outer sleeve is connected with the lock sleeve through threads, and the lower end of the lock sleeve is connected with the lower outer sleeve; the turning plate seat is fixedly connected with the lower end of the upper joint, and the pin shaft penetrates through the torsion spring to connect the turning plate with the turning plate seat; keyways are processed on the inner surface of the lock sleeve and the outer surface of the central tube, and the keyways of the two keyways are arranged oppositely; a key sleeve is arranged between the central tube and the lock sleeve, the front end of the key sleeve is provided with a key matched with key grooves of the lock sleeve and the central tube, and the key sleeve is connected to the central tube through a pin; two opposite L-shaped grooves are formed in the outer surface of the central tube, two symmetrical keys are formed in the inner surface of the lock sleeve, and the keys of the lock sleeve are positioned at the innermost ends of the two opposite L-shaped grooves of the central tube and axially lock the two opposite L-shaped grooves.
The baffle ring is arranged below the key sleeve on the central tube and is connected with the central tube through threads, and end face teeth are machined at the lower end of the baffle ring.
The invention has the positive effects that: the tool is used for blowout prevention of an oil pipe for secondary operation of a water well, is connected to the upper end of a packer or the upper end of an injection allocation device, can be used in multiple stages, and can seal the oil pipe to achieve a blowout prevention function only by lifting the pipe column 1-2 in a forward rotation mode during secondary operation; when the tool is connected to the upper end of the packer, the pressure relief function is realized, if the packer cannot be unsealed, high-pressure liquid at the lower part of the packer can be discharged into a sleeve at the upper part of the packer, so that the upper pressure and the lower pressure of the packer are balanced, and the phenomenon of jacking pipes caused by overhigh bottom hole pressure is prevented; meanwhile, in the pipe column lifting process, only a small amount of liquid in the oil pipe is brought to the ground and is sucked away by the sewage suction truck, so that the pollution to the ground is reduced to the greatest extent, the requirement on environmental protection is met, and the operation environment is improved. Meanwhile, the operation is simple. The teeth on the lower end surface of the baffle ring can increase friction force after contacting with the inner side of the lower end of the lower outer sleeve, so that torque transmission is ensured, and the next stage smoothly completes actions. The tool is provided with the key sleeve, so that the rotation of the oil pipe in the process of running the pipe column for the first time can be effectively prevented, the lock sleeve rotates in the groove F of the central pipe, and the tool is released in advance by mistake.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a B-B cross-sectional view of fig. 1.
Fig. 4 is a C-C cross-sectional view of fig. 1.
Fig. 5 is a schematic view of the structure of the part of the upper end of the central rod, which is matched with the lock sleeve.
Fig. 6 is a cross-sectional view of the sleeve.
Fig. 7 is a D-D cross-sectional view of fig. 6.
Fig. 8 is an E-E cross-sectional view of fig. 6.
Fig. 9 is a schematic diagram of the connection structure of the upper joint and the turning plate.
Part number in the figure: the upper joint 1, the upper outer sleeve 2, the screw 3, the turning plate seat 4, the torsion spring 5, the pin shaft 6, the turning plate 7, the lock sleeve 8, the lower outer sleeve 9, the key sleeve 10, the pin 11, the baffle ring 12 and the central tube 13.
Detailed Description
Referring to fig. 1 and 9, a pressure relief hole D is formed in an upper outer sleeve 2, the upper end of the upper outer sleeve 2 is connected with an upper joint 1 in a threaded manner, the lower end of the upper outer sleeve 2 is connected with a lock sleeve 8 in a threaded manner, and the lower end of the lock sleeve 8 is connected with a lower outer sleeve 9; the turning plate seat 4 is fixed at the lower end of the upper joint 1 through a screw 3, and a pin shaft 6 penetrates through a torsion spring 5 to connect the turning plate 7 with the turning plate seat 4; the contact position of the lock sleeve 8 and the central tube 13 is sealed by a sealing rubber ring. Referring to fig. 1, 4 and 5, four key grooves (key grooves 8-2 on the inner surface of the lock sleeve 8 are shown in fig. 8) are formed on the inner surface of the lock sleeve 8 and the outer surface of the central tube 13, and the key grooves of the two are arranged oppositely; a key sleeve 10 is arranged between the central tube 13 and the lock sleeve 8, and four keys 10-1 matched with four key grooves 8-2 of the lock sleeve 8 and four key grooves H (figure 5) of the central tube 13 are processed at the front end of the key sleeve 10; the key sleeve 10 is connected to the central tube 13 by two pins 11 which are circumferentially opposite; a sealing ring is arranged between the key sleeve 10 and the lock sleeve 8 as well as between the key sleeve and the central tube 13. 1-3 and 5, two opposite L-shaped grooves F (see FIG. 5) are formed in the outer surface of the central tube 13; referring to fig. 6-8, two symmetrical keys 8-1 are further formed on the inner surface of the lock sleeve 8, and the keys 8-1 of the lock sleeve 8 are located at the innermost ends of two opposite L-shaped grooves of the central tube 13 to axially lock the two. Four key grooves 8-2 are also processed on the inner surface of the lock sleeve 8 and are arranged opposite to the four key grooves on the outer surface of the central tube 13; referring to fig. 1, a baffle ring 12 is disposed below the key sleeve 10 on the central tube 13, the baffle ring 12 is in threaded connection with the central tube 13, end face teeth E are machined at the lower end of the baffle ring 12, when the upper joint 1 is lifted up, the lower outer sleeve 9 is lifted up along with the baffle ring, and the teeth E at the lower end face of the baffle ring can increase friction force contacted with the inner side of the lower end of the lower outer sleeve 9, so that torque transmission is ensured.
Working principle:
1. When the pipe column is lowered, the invention is connected above the packer or above the injection allocation device, after the pipe column is lowered to a preset depth, the packer is pressed and set, and meanwhile, the pin 11 is sheared to enable the key sleeve 10 to descend so as to unlock the lock sleeve 8 and the central pipe 13, and the upper joint 1 can rotate.
2. When the pipe column is lifted by secondary operation, after the pipe column rotates forward for 1-2 circles, the key 8-1 of the lock sleeve 8 rotates from the inner end of the L-shaped groove F to the notch and then lifts up, the lower end of the upper joint 1 is separated from the upper end of the central pipe 13, the turning plate 7 turns over by 90 degrees under the action of the torsion spring 5, and a channel at the lower end of the upper joint 1 is sealed to prevent high-pressure fluid from being sprayed out of an oil pipe; if the packer of the present stage fails to be successfully unpacked, the high-pressure fluid at the lower part of the packer of the present stage can be discharged into the sleeve at the upper part of the packer through the pressure relief hole D to achieve the balance of the upper pressure and the lower pressure, so as to prevent the pipe jacking accident caused by overlarge pressure difference.
3. When the uppermost primary tool is lifted out of the wellhead, the pipe column is lifted up after being rotated forward for 1-2 circles again, the next-stage blowout preventer is closed, and the next-stage blowout preventer is operated sequentially until all pipe columns are lifted out, so that each stage can be guaranteed to be blowout-preventing, and the requirement of environment-friendly operation is met.
Claims (2)
1. The utility model provides a water well prevents top blowout preventer, includes top connection, goes up overcoat, lower overcoat and center tube, characterized by: the upper outer sleeve is provided with a pressure relief hole, the lower end of the upper outer sleeve is connected with the lock sleeve through threads, and the lower end of the lock sleeve is connected with the lower outer sleeve; the turning plate seat is fixedly connected with the lower end of the upper joint, and the pin shaft penetrates through the torsion spring to connect the turning plate with the turning plate seat; keyways are processed on the inner surface of the lock sleeve and the outer surface of the central tube, and the keyways of the two keyways are arranged oppositely; a key sleeve is arranged between the central tube and the lock sleeve, the front end of the key sleeve is provided with a key matched with key grooves of the lock sleeve and the central tube, and the key sleeve is connected to the central tube through a pin; two opposite L-shaped grooves are formed in the outer surface of the central tube, two symmetrical keys are formed in the inner surface of the lock sleeve, and the keys of the lock sleeve are positioned at the innermost ends of the two opposite L-shaped grooves of the central tube and axially lock the two opposite L-shaped grooves.
2. The water well roof blowout prevention tool according to claim 1, wherein: the baffle ring is arranged below the key sleeve on the central tube and is connected with the central tube through threads, and end face teeth are machined at the lower end of the baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353226.2A CN110424919B (en) | 2019-04-29 | 2019-04-29 | Top-proof blowout-proof tool for water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353226.2A CN110424919B (en) | 2019-04-29 | 2019-04-29 | Top-proof blowout-proof tool for water well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110424919A CN110424919A (en) | 2019-11-08 |
| CN110424919B true CN110424919B (en) | 2024-05-07 |
Family
ID=68408411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910353226.2A Active CN110424919B (en) | 2019-04-29 | 2019-04-29 | Top-proof blowout-proof tool for water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110424919B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021980A (en) * | 2020-02-17 | 2020-04-17 | 辽宁华实技术有限公司 | Double-section automatic blowout prevention well mouth sealer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB471732A (en) * | 1935-11-19 | 1937-09-06 | Hydril Co | Improvements in packing heads for wells |
| CN201013297Y (en) * | 2007-01-22 | 2008-01-30 | 唐永强 | Pump recovery well mis-pressing underbalanced pump operation environment protection spraying-proof apparatus |
| CN101709631A (en) * | 2009-11-10 | 2010-05-19 | 梁伟成 | Blowout-prevention connecting-tripping device |
| CN202788732U (en) * | 2012-10-11 | 2013-03-13 | 黑龙江八一农垦大学 | Blowout preventer used in oil well testing |
| WO2014131141A1 (en) * | 2013-02-28 | 2014-09-04 | 中国石油天然气集团公司 | Hydraulic injection packer tool suitable for multi-stage hydraulic injection fracturing |
| CN104405336A (en) * | 2014-10-15 | 2015-03-11 | 中国石油天然气股份有限公司 | Multifunctional tail pipe valve for operation under pressure |
| CN105239952A (en) * | 2015-09-28 | 2016-01-13 | 梁伟成 | Blowout prevention tool for water injection well |
| CN105971558A (en) * | 2016-05-10 | 2016-09-28 | 辽宁新华仪器有限公司 | Oil drain device |
| CN210195707U (en) * | 2019-04-29 | 2020-03-27 | 辽宁新华仪器有限公司 | Well anti-jacking blowout-preventing tool |
-
2019
- 2019-04-29 CN CN201910353226.2A patent/CN110424919B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB471732A (en) * | 1935-11-19 | 1937-09-06 | Hydril Co | Improvements in packing heads for wells |
| CN201013297Y (en) * | 2007-01-22 | 2008-01-30 | 唐永强 | Pump recovery well mis-pressing underbalanced pump operation environment protection spraying-proof apparatus |
| CN101709631A (en) * | 2009-11-10 | 2010-05-19 | 梁伟成 | Blowout-prevention connecting-tripping device |
| CN202788732U (en) * | 2012-10-11 | 2013-03-13 | 黑龙江八一农垦大学 | Blowout preventer used in oil well testing |
| WO2014131141A1 (en) * | 2013-02-28 | 2014-09-04 | 中国石油天然气集团公司 | Hydraulic injection packer tool suitable for multi-stage hydraulic injection fracturing |
| CN104405336A (en) * | 2014-10-15 | 2015-03-11 | 中国石油天然气股份有限公司 | Multifunctional tail pipe valve for operation under pressure |
| CN105239952A (en) * | 2015-09-28 | 2016-01-13 | 梁伟成 | Blowout prevention tool for water injection well |
| CN105971558A (en) * | 2016-05-10 | 2016-09-28 | 辽宁新华仪器有限公司 | Oil drain device |
| CN210195707U (en) * | 2019-04-29 | 2020-03-27 | 辽宁新华仪器有限公司 | Well anti-jacking blowout-preventing tool |
Non-Patent Citations (1)
| Title |
|---|
| 射孔压裂不压井作业配套技术研究;旺建立;;石油机械;41(04);第69-71, 75页 * |
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| Publication number | Publication date |
|---|---|
| CN110424919A (en) | 2019-11-08 |
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