CN109519137B - Downhole choke release tool - Google Patents
Downhole choke release tool Download PDFInfo
- Publication number
- CN109519137B CN109519137B CN201811450729.3A CN201811450729A CN109519137B CN 109519137 B CN109519137 B CN 109519137B CN 201811450729 A CN201811450729 A CN 201811450729A CN 109519137 B CN109519137 B CN 109519137B
- Authority
- CN
- China
- Prior art keywords
- rod
- pin
- sliding block
- release tool
- slideway
- 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
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an underground throttle release tool, which relates to the field of underground tools in petroleum industry, and comprises a cylindrical body, a sliding block and a through rod which are coaxially arranged, wherein the upper end of the through rod is connected with the lower end of the body to form a slideway, and the sliding block is freely sleeved on the slideway and is limited at the lower part of the slideway through a pin; according to the structural characteristics of the throttler, a simple and efficient throttle mouth releasing well dredging tool is designed, and the problems that the underground throttle mouth is blocked and cannot be salvaged, so that the production of an oil-gas well cannot be restored are solved; the underground throttle valve can be released to open the well through the low-cost steel wire operation, normal production of the oil and gas well is recovered, and the underground throttle valve is simple in structure, convenient to assemble and simple and convenient to operate.
Description
Technical Field
The invention relates to the field of downhole tools in the petroleum industry, in particular to a downhole choke release tool.
Background
In the early stage of the self-injection production of the oil and gas well, in order to throttle and cool down, keep proper production speed and prevent formation injuries such as flooding, the self-injection production is generally carried out by adopting a mode of installing a throttle under the well. However, as the production phase advances, formation water is more and more severely discharged, well killing can occur, and the choke plug is favored, so that the yield is reduced and even the production is stopped. At this time, the throttler needs to be taken out, but the situation of fishing failure may be encountered when the throttler is fished due to complex underground well conditions, and the situation of displaying after multiple fishing failures is inexpediable, so that the cost and the pressure are high, and the oil and gas well cannot be recovered.
Currently, there is no downhole tool that addresses the above problems by releasing the choke to open the well to reestablish the oil and gas production path.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an underground throttle valve releasing tool, which designs a simple and efficient throttle valve releasing well dredging tool according to the structural characteristics of a throttle valve, and solves the problems that the underground throttle valve is blocked and cannot be salvaged to cause that the production of an oil-gas well cannot be restored.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a downhole choke release tool, includes coaxial cylindrical body, slider and the general stem that sets up, general stem upper end with the body lower extreme is connected, forms the slide, the slider freely overlaps is established on the slide to through the pin spacing in the slide lower part; the upper part of the body is provided with an upper joint for connecting the joint; the inner diameter of the sliding block is smaller than the outer diameter of the through rod, and the outer diameter of the sliding block is larger than the outer diameter of the through rod; the length of the through rod is 350mm-510mm; the outer diameter of the sliding block is 10-15mm larger than the diameter of the flow passage of the throttle to be released, and the outer diameter of the through rod is smaller than the inner diameter of the flow passage of the throttle to be released. When the release operation is carried out, the through rod enters the flow passage of the throttle, the throttle nozzle is impacted, and the sliding block plays a limiting role.
Further, the middle part of the body is provided with a stop block, the lower part of the body is provided with a slide bar, the bottom of the body is provided with a connecting groove, and the body is connected with the through rod through the connecting groove.
Further, the lower part of the through rod is a through rod body, an external thread connecting part is arranged at the upper end of the through rod body, a limiting block is arranged at the upper end of the external thread connecting part, and the upper end of the through rod is connected with the internal thread connecting part in the connecting groove through the external thread connecting part in a threaded manner, so that the body is connected with the through rod. The threaded connection is convenient to disassemble and assemble and good in tightness.
Further, the outer diameter of the step at the upper end of the through rod body is larger than that of the sliding rod, and the slide way is formed by the step at the upper end of the through rod body, the sliding rod and the stop block. The slider is freely sleeved on the slide way, when the pin is not limited to the slider, the slider can freely slide up and down along the slide way between the stop block and the upper end step of the through rod body, and when the through rod is connected, the slider slides to a position close to the stop block, so that the through rod is conveniently connected with the body.
Further, a pin groove is formed in the lower portion of the sliding rod, pin holes are correspondingly formed in the sliding block, and the pins penetrate through the pin holes and are limited in the pin groove. The sliding block is limited at the position of the pin groove, and can freely rotate along the pin groove, so that the tool can be more conveniently lowered into the well.
Further, a screw groove is formed between the external thread connecting portion and the limiting block, a screw hole corresponding to the screw groove is formed in the lower portion of the sliding rod, and the screw hole is connected with the screw groove through a screw. The body and the through rod are prevented from falling off possibly, and the reliability of the tool in underground use is improved.
Further, the outer surface of the sliding block is symmetrically provided with two parallel surfaces. The fastening operation during tool assembly is facilitated.
It should be noted that, as a person skilled in the art will readily understand, the present invention is directed to a release tool for a downhole choke, which is cylindrical in shape as a whole, and thus, there is no excessive limitation here, and is based on knowledge, and no limitation is represented.
The beneficial effects of the invention are as follows:
compared with the prior art, the invention provides a brand new downhole choke release well-dredging tool, which can release the well-dredging to the downhole choke which cannot be salvaged through low-cost steel wire operation, and recover the normal production of an oil-gas well.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a release tool according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a body structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of a slider structure according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic view of a through-rod structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of a structure of a slide formed by connecting a body and a through rod according to an embodiment of the present invention;
In the figure: 1. a body; 11. an upper joint; 12. a stop block; 13. a slide bar; 132. a slideway; 14. a connecting groove; 141. an internal threaded connection; 15. a pin slot; 16. screw holes; 2. a slide block; 21. a slideway; 22. a pin hole; 3. a through rod; 31. a through rod body; 32. an external thread connection; 33. a limiting block; 34. a screw groove; 4. a pin; 5. and (5) a screw.
Detailed Description
The present invention will be further described with reference to the following examples for the purpose of making the objects, technical solutions and advantages of the present invention more apparent, but not limiting the scope of the present invention. In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on the orientation or positional relationship of a tool in a well when working downhole, and are merely for convenience in describing the present invention and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 6, the downhole choke release tool comprises a cylindrical body 1, a sliding block 2 and a through rod 3 which are coaxially arranged, wherein the upper end of the through rod 3 is connected with the lower end of the body 1 to form a slideway 132, and the sliding block 2 is freely sleeved on the slideway 132 and is limited at the lower part of the slideway 132 through a pin 4;
An upper joint 11 for connecting the joint is arranged at the upper part of the body 1; the inner diameter of the sliding block 2 is smaller than the outer diameter of the through rod 3, and the outer diameter of the sliding block 2 is larger than the outer diameter of the through rod 3; the length of the through rod 3 is 350mm-510mm;
The outer diameter of the sliding block 2 is 10-15mm larger than the diameter of the flow passage of the throttle to be released, and the outer diameter of the through rod 3 is smaller than the inner diameter of the flow passage of the throttle to be released.
As an optimization scheme, a stop block 12 is arranged in the middle of the body 1, a sliding rod 13 is arranged at the lower part of the body, a connecting groove 14 is arranged at the bottom of the body, and the body 1 is connected with the through rod 3 through the connecting groove 14.
As an optimization scheme, the lower part of the through rod 3 is a through rod body 31, an external threaded connection part 32 is arranged at the upper end of the through rod body 31, a limiting block 33 is arranged at the upper end of the external threaded connection part 32, and the upper end of the through rod 3 is in threaded connection with an internal threaded connection part 141 in the connecting groove 14 through the external threaded connection part 32, so that the body 1 is connected with the through rod 3.
As an optimization scheme, the outer diameter of the upper end step of the through rod body 31 is larger than the outer diameter of the sliding rod 13, and the upper end step of the through rod body 31, the sliding rod 13 and the stop block 12 form the slideway 132.
As an optimization scheme, the lower part of the sliding rod 13 is provided with a pin groove 15, the sliding block 2 is correspondingly provided with a pin hole 22, and the pin 4 passes through the pin hole 22 and is limited in the pin groove 15.
As an optimization scheme, a screw groove 34 is formed between the external thread connection portion 32 and the limiting block 33, a screw hole 16 corresponding to the screw groove 34 is formed in the lower portion of the sliding rod 13, and the screw hole 16 is connected with the screw groove 34 through a screw 5.
As an optimization scheme, the outer surface of the sliding block 2 is symmetrically provided with two parallel surfaces.
The working principle of the tool of the invention is as follows:
when the tool is used, the tool is assembled according to the figure 1, the steel wire operation is utilized, the upper joint 11 is connected, the tool is lowered to the throttle position, the through rod body 31 is enabled to shear pins of the throttle by vibration, the throttle falls into the bottom of a well, the tool continues to descend, the slide block 2 is sheared after encountering a step of the throttle, the slide block 2 is changed into a state capable of freely moving up and down in the slide way 132, the tool is pulled out, if the pins 4 are sheared, the throttle is released, otherwise, the release failure is indicated.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The downhole choke release tool is characterized by comprising a cylindrical body (1), a sliding block (2) and a through rod (3) which are coaxially arranged, wherein the upper end of the through rod (3) is connected with the lower end of the body (1) to form a slideway (132), the sliding block (2) is freely sleeved on the slideway (132) and limited at the lower part of the slideway (132) through a pin (4), the through rod (3) is configured to shear the pin of a choke by utilizing vibration, the sliding block (2) is configured to be abutted with a step of the choke when the body (1) continues to descend after the pin of the choke is sheared, and the pin (4) is configured to be sheared when the choke is successfully released;
An upper joint (11) for connecting the joint is arranged at the upper part of the body (1); the inner diameter of the sliding block (2) is smaller than the outer diameter of the through rod (3), and the outer diameter of the sliding block (2) is larger than the outer diameter of the through rod (3); the length of the through rod (3) is 350mm-510mm;
The outer diameter of the sliding block (2) is 10-15mm larger than the diameter of the flow passage of the throttle to be released, and the outer diameter of the through rod (3) is smaller than the inner diameter of the flow passage of the throttle to be released;
The middle part of body (1) sets up dog (12), and the lower part sets up slide bar (13), and the bottom sets up spread groove (14), body (1) pass through spread groove (14) with lead to pole (3) to be connected.
2. The release tool according to claim 1, wherein the lower part of the through rod (3) is a through rod body (31), an external threaded connection part (32) is arranged at the upper end of the through rod body (31), a limiting block (33) is arranged at the upper end of the external threaded connection part (32), and the upper end of the through rod (3) is connected with the through rod (3) through threads of an internal threaded connection part (141) in the connecting groove (14) through the external threaded connection part (32).
3. The release tool according to claim 2, characterized in that the outside diameter of the upper end step of the through-rod body (31) is larger than the outside diameter of the slide bar (13), the upper end step of the through-rod body (31), the slide bar (13) and the stopper (12) forming the slide way (132).
4. The release tool according to claim 1, wherein a pin slot (15) is arranged at the lower part of the sliding rod (13), a pin hole (22) is correspondingly arranged on the sliding block (2), and the pin (4) passes through the pin hole (22) and is limited in the pin slot (15).
5. The release tool according to claim 2, wherein a screw groove (34) is provided between the male screw connection portion (32) and the stopper (33), a screw hole (16) corresponding to the screw groove (34) is provided at the lower portion of the slide bar (13), and the screw hole (16) is connected to the screw groove (34) by a screw (5).
6. Release tool according to any of claims 1-5, characterized in that the outer surface of the slide (2) is symmetrically provided with two parallel surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450729.3A CN109519137B (en) | 2018-11-30 | 2018-11-30 | Downhole choke release tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450729.3A CN109519137B (en) | 2018-11-30 | 2018-11-30 | Downhole choke release tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109519137A CN109519137A (en) | 2019-03-26 |
| CN109519137B true CN109519137B (en) | 2024-08-20 |
Family
ID=65793802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811450729.3A Active CN109519137B (en) | 2018-11-30 | 2018-11-30 | Downhole choke release tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109519137B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049593A (en) * | 2020-10-27 | 2020-12-08 | 中国石油天然气集团有限公司 | Long-rod coiled tubing injection tool and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963643A (en) * | 2015-05-29 | 2015-10-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Corss-core fishing spear tool |
| CN207406285U (en) * | 2017-10-26 | 2018-05-25 | 宁夏长庆石油机械制造有限责任公司 | Drop-off preventer for sucker rod |
| CN209483269U (en) * | 2018-11-30 | 2019-10-11 | 四川圣诺油气工程技术服务有限公司 | A kind of downhole-choke release tool |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762175A (en) * | 1987-05-06 | 1988-08-09 | Petro-Tech Tools Incorporated | Apparatus for connecting jars to a downhole tool |
| US5624001A (en) * | 1995-06-07 | 1997-04-29 | Dailey Petroleum Services Corp | Mechanical-hydraulic double-acting drilling jar |
| CN2758458Y (en) * | 2004-11-12 | 2006-02-15 | 西安益友石油科技有限公司 | Presetting type under well choke of gas well |
| CN201218090Y (en) * | 2008-06-04 | 2009-04-08 | 中国石油天然气股份有限公司 | Variable drift diameter downhole choke |
| CN202338303U (en) * | 2011-11-03 | 2012-07-18 | 中国石油天然气股份有限公司 | Sand-proof preset underground throttle with air tap |
| CN203640654U (en) * | 2013-10-24 | 2014-06-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Reversing process string for horizontal well |
| US9790756B2 (en) * | 2013-10-28 | 2017-10-17 | Keith McNeilly | Wireline down jar |
| US9611721B2 (en) * | 2015-08-26 | 2017-04-04 | Geodynamics, Inc. | Reverse flow sleeve actuation method |
| CN107676054B (en) * | 2017-10-25 | 2023-11-28 | 中国石油天然气股份有限公司 | Downhole choke fishing tool and operation method |
| CN208122836U (en) * | 2018-02-26 | 2018-11-20 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of High Pressure Water Injection String |
-
2018
- 2018-11-30 CN CN201811450729.3A patent/CN109519137B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963643A (en) * | 2015-05-29 | 2015-10-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Corss-core fishing spear tool |
| CN207406285U (en) * | 2017-10-26 | 2018-05-25 | 宁夏长庆石油机械制造有限责任公司 | Drop-off preventer for sucker rod |
| CN209483269U (en) * | 2018-11-30 | 2019-10-11 | 四川圣诺油气工程技术服务有限公司 | A kind of downhole-choke release tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109519137A (en) | 2019-03-26 |
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