CN113236171A - Radial ablation cutting tool for oil-gas well - Google Patents
Radial ablation cutting tool for oil-gas well Download PDFInfo
- Publication number
- CN113236171A CN113236171A CN202110597439.7A CN202110597439A CN113236171A CN 113236171 A CN113236171 A CN 113236171A CN 202110597439 A CN202110597439 A CN 202110597439A CN 113236171 A CN113236171 A CN 113236171A
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- nozzle
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- cutting tool
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- 238000002679 ablation Methods 0.000 title claims description 8
- 230000003628 erosive effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000126 substance Substances 0.000 abstract description 4
- 239000002360 explosive Substances 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 150000002678 macrocyclic compounds Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
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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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/02—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground by explosives or by thermal or chemical means
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nozzles (AREA)
Abstract
一种油气井用径向熔蚀切割工具，包括电缆连接器、衬套和喷嘴外壳，电缆连接器与下方热能发生器一端通过螺纹连接，衬套通过过盈配合压进热能发生器另一端冷却以后固定，在喷嘴外壳内放入喷嘴阻流大环和喷嘴阻流小环，喷嘴内部螺纹零件大径螺纹与喷嘴外壳连接，所述喷嘴外壳内设置喷嘴固定环，喷嘴固定环通过过盈配合压进喷嘴外壳内以固定喷嘴外壳内部零件不发生偏移，喷嘴内部螺纹零件小径与滑套贴合，喷嘴内部螺纹零件小径上螺纹连接导向头，导向头与导向头外壳通过O型密封圈固定。本发明通过电缆将切割的工具直接下入到连续管内的卡点附近，熔断后即可提出切割卡点上的任何物体，不会涉及爆炸物品或危险的化学品。
A radial erosion cutting tool for oil and gas wells, comprising a cable connector, a bushing and a nozzle casing. The cable connector is connected with one end of a lower heat energy generator through threads, and the bushing is pressed into the other end of the heat energy generator through interference fit for cooling After fixing, put a large nozzle choking ring and a small nozzle choking ring in the nozzle casing, the large diameter thread of the internal threaded parts of the nozzle is connected with the nozzle casing, a nozzle fixing ring is arranged in the nozzle casing, and the nozzle fixing ring is fitted by interference fit Press into the nozzle housing to fix the internal parts of the nozzle housing from deviation, the small diameter of the internal threaded parts of the nozzle fits with the sliding sleeve, the small diameter of the internal threaded parts of the nozzle is threaded to the guide head, and the guide head and the guide head shell are fixed by an O-ring seal . In the present invention, the cutting tool is directly lowered into the vicinity of the stuck point in the coiled pipe through the cable, and any object on the cut stuck point can be lifted out after fusing, without involving explosives or dangerous chemicals.
Description
Technical Field
The invention relates to the technical field of coiled tubing operation, in particular to a radial ablation cutting tool for an oil-gas well.
Background
The coiled tubing operation technology is widely applied to the exploration and research of oil and gas fields. Due to the fact that the coiled tubing is small in pipe diameter, high in elasticity, high in toughness, incapable of rotating and the like, once the coiled tubing is stuck in a well, a common stuck-off solving processing method is to pull the coiled tubing vigorously, and then carry out sectional fishing after the coiled tubing is broken off, so that the coiled tubing is prone to being scrapped, and meanwhile, the construction process is complex and the processing period is long.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a radial ablation cutting tool for an oil-gas well, which directly descends the cutting tool to the vicinity of a clamping point in a continuous pipe through a cable, and can lift any object on the cutting clamping point after being fused, so that explosive substances or dangerous chemicals cannot be involved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a radial erosion cutting tool for an oil-gas well comprises a cable connector 11, a bushing 8 and a nozzle shell 14, wherein the cable connector 11 is connected with one end of a lower heat energy generator 9 through threads, the bushing 8 is pressed into the other end of the heat energy generator 9 through interference fit and then is cooled and fixed, a nozzle flow-resisting large ring 7 and a nozzle flow-resisting small ring 5 are placed in the nozzle shell 14, the large-diameter threads of a nozzle internal thread part 6 are connected with the nozzle shell 14, a nozzle fixing ring 13 is arranged in the nozzle shell 14, the nozzle fixing ring 13 is pressed into the nozzle shell 14 through interference fit to fix the internal part of the nozzle shell 14 against deviation, the small diameter of the nozzle internal thread part 6 is attached to a sliding sleeve 12, a guide head 1 is connected with the small diameter of the nozzle internal thread part 6 through threads, and the guide head 1 is fixed with the guide head shell 3 through an O-shaped sealing ring.
The nozzle flow-resisting large ring 7, the nozzle internal thread part 6 and the nozzle flow-resisting small ring 5 are all provided with flow-resisting holes for providing the motion resistance of energy beams so as to uniformly release energy.
The nozzle flow blocking small ring 5, the nozzle internal thread part 6, the nozzle flow blocking large ring 7, the bushing 8, the sliding sleeve 12, the nozzle fixing ring 13 and the nozzle outer shell 14 form a nozzle.
And an O-shaped sealing ring is arranged at the threaded connection part of the cable connector 11 and the heat energy generator 9 and is used for preventing gas from flowing backwards.
The nozzle flow-resisting small ring 5 is cylindrical with the height of 5mm, and 6 flow-resisting holes are formed in the surface and are distributed in the circumferential direction;
the internal thread part 6 of the nozzle consists of a large cylinder and a small cylinder, the large cylinder is provided with 6 choke holes which are distributed in the circumferential direction, and the outer sides of the large cylinder and the small cylinder are provided with threads for connection;
the nozzle flow-resisting large ring 7 is cylindrical with the height of 14mm, and 6 flow-resisting holes are circumferentially distributed;
the lining 8 is in a hollow cylindrical shape;
the top of the sliding sleeve 12 is a cylinder, and the bottom of the sliding sleeve is similar to a funnel shape and has a certain radian; the gas diffusion efficiency is higher;
the nozzle fixing ring 13 is in a flat annular shape;
the top of the nozzle shell 14 is provided with a groove for a sealing ring, and the inside of the nozzle shell is provided with threads which are connected with threaded parts inside the nozzle.
The invention has the beneficial effects that:
the invention avoids irreversible damages such as plastic deformation, buckling deformation and the like of the continuous pipe caused by powerful drawing and movable unfreezing, ensures that the continuous pipe on the upper part of the cutting point is complete and can be used continuously, does not use explosives or dangerous substances, and has safe process.
Description of the drawings:
FIG. 1 is an assembly schematic of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is an exploded view of the present invention.
Fig. 4 is a schematic view of a bushing structure.
FIG. 5 is a schematic diagram of a nozzle flow-blocking macrocycle.
Fig. 6 is a schematic view of a nozzle flow-blocking small ring structure.
FIG. 7 is a schematic view of the internal thread part structure of the nozzle.
Fig. 8 is a schematic view of a sliding sleeve structure.
Fig. 9 is a schematic view of the nozzle housing structure.
Fig. 10 is a schematic view of the nozzle fixing ring structure.
Fig. 11 is a schematic view of a nozzle structure.
Detailed Description
The present invention will be described in further detail with reference to examples.
As shown in fig. 1-11: the parts wrap the guide head 1 and the O-shaped sealing ring 2 to fix the connection part of the guide head and the guide head shell, the O-shaped sealing ring 4 fixes the contact part of the guide head shell and the nozzle, and the O-shaped sealing ring 10 fixes the connection part of the cable connector and the heat energy generator and prevents gas from flowing backwards. The nozzle flow-blocking device comprises a guide head shell 3, a nozzle flow-blocking small ring 5, a nozzle internal thread part 6, a nozzle flow-blocking large ring 7, a lining 8, a thermal energy generator 9, a cable connector 11, a sliding sleeve 12 and a nozzle fixing ring 13.
The invention comprises a cable connector 11, the cable connector 11 is connected with a lower heat energy generator 9 through threads, a lining 8 is pressed into the heat energy generator 9 through interference fit to be fixed after being cooled, a nozzle flow-resisting large ring 7 is arranged in a nozzle, a large-diameter thread of a nozzle internal thread part 6 is connected with the nozzle, then the nozzle flow-resisting small ring 5 is arranged, a nozzle fixing ring 13 is pressed into the nozzle through interference fit to fix the nozzle internal part without deviation, a sliding sleeve 12 is attached to the small diameter of the nozzle internal thread part 6, a guide head 1 is in threaded connection with the small diameter of the nozzle internal thread part 6, and a guide head shell 14 is fixed with the guide head 1 through an O-shaped sealing ring.
The nozzle flow-resisting large ring 7, the nozzle internal thread part 6 and the nozzle flow-resisting small ring 5 are provided with flow-resisting holes to provide the motion resistance of the energy beam so as to uniformly release energy.
An O-shaped sealing ring is arranged at the threaded connection position of the cable connector 11 and the heat energy generator 9 to prevent gas from flowing backwards.
The nozzle flow-resisting small ring 5 is cylindrical with the height of 5mm, and 6 flow-resisting holes are formed in the surface and are distributed in the circumferential direction;
the internal thread part 6 of the nozzle consists of a large cylinder and a small cylinder, the large cylinder is provided with 6 choke holes which are distributed in the circumferential direction, and the outer sides of the large cylinder and the small cylinder are provided with threads for connection;
the nozzle flow-resisting large ring 7 is cylindrical with the height of 14mm, and 6 flow-resisting holes are circumferentially distributed;
the lining 8 is in a hollow cylindrical shape;
the top of the sliding sleeve 12 is a cylinder, and the bottom of the sliding sleeve is similar to a funnel shape and has a certain radian; the gas diffusion efficiency is higher;
the nozzle fixing ring 13 is in a flat annular shape;
the top of the nozzle shell 14 is provided with a groove for a sealing ring, and the inside of the nozzle shell is provided with threads which are connected with threaded parts inside the nozzle.
The working principle of the invention is as follows:
the method is characterized in that each part of a radial erosion cutting tool is well installed on the ground, the whole assembled tool is conveyed to a preset position in a pipe by a cable, current is transmitted to the tool to a heat generator 9 through a cable connecting cable connector 11, the current flows through a resistor in the heat generator 9 to generate Joule effect to generate heat energy, when the ignition temperature of a material is reached, high-energy fuel in the heat generator 9 is instantaneously combusted to generate huge energy to form high-energy plasma, and the internal pressure of the cutting tool is directly increased. Once the pressure exceeds the pressure that the sliding sleeve 12 can bear, the sliding sleeve 12 on the nozzle of the erosion cutting tool slides downwards under the pressure of the gas, so that the nozzle is exposed in the well, and high-energy plasma is emitted from the nozzle to the pipeline to cut the preset cutting position. Wherein the pressure balancer and the heat generator can be reused after being cleaned.
Claims (5)
1. A radial ablation cutting tool for oil and gas wells is characterized by comprising a cable connector (11), a bushing (8) and a nozzle shell (14), wherein the cable connector (11) is in threaded connection with one end of a lower heat energy generator (9), the bushing (8) is pressed into the other end of the heat energy generator (9) through interference fit and is fixed after being cooled, a nozzle flow-blocking large ring (7) and a nozzle flow-blocking small ring (5) are placed in the nozzle shell (14), a large-diameter thread of a nozzle internal thread part (6) is connected with the nozzle shell (14), a nozzle fixing ring (13) is arranged in the nozzle shell (14), the nozzle fixing ring (13) is pressed into the nozzle shell (14) through interference fit to fix internal parts of the nozzle shell (14) without deviation, a small diameter of the nozzle internal thread part (6) is attached to a sliding sleeve (12), a thread guide head (1) is arranged on the nozzle internal thread part (6), the guide head (1) and the guide head shell (3) are fixed through an O-shaped sealing ring.
2. The radial ablation cutting tool for oil and gas wells according to claim 1, wherein the nozzle flow-blocking large ring (7), the nozzle internal thread part (6) and the nozzle flow-blocking small ring (5) are provided with flow-blocking holes for providing motion resistance of the energy beam to release energy uniformly.
3. The radial erosion cutting tool for oil and gas wells as claimed in claim 1, wherein the nozzle choke small ring (5), the nozzle inner thread part (6), the nozzle choke large ring (7), the bushing (8), the sliding sleeve (12), the nozzle fixing ring (13) and the nozzle housing (14) form a nozzle.
4. The radial ablation cutting tool for oil and gas wells as claimed in claim 1, wherein an O-ring seal is arranged at the threaded connection of the cable connector (11) and the thermal energy generator (9) for preventing gas backflow.
5. The radial ablation cutting tool for oil and gas wells as claimed in claim 1, wherein the nozzle choke small ring (5) is cylindrical with a height of 5mm, and 6 choke holes are circumferentially distributed on the surface;
the internal thread part (6) of the nozzle consists of a large cylinder and a small cylinder, the large cylinder is provided with 6 choked flow holes which are distributed in the circumferential direction, and the outer sides of the large cylinder and the small cylinder are provided with threads for connection;
the nozzle flow-resisting large ring (7) is cylindrical with the height of 14mm, and 6 flow-resisting holes are distributed in the circumferential direction;
the lining (8) is in a hollow cylindrical shape;
the top of the sliding sleeve (12) is a cylinder, and the bottom of the sliding sleeve is similar to a funnel shape and has a certain radian;
the nozzle fixing ring (13) is in a flat annular shape;
the top of the nozzle shell (14) is provided with a groove for a sealing ring, and the inside of the nozzle shell is provided with threads which are connected with internal thread parts of the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597439.7A CN113236171A (en) | 2021-05-31 | 2021-05-31 | Radial ablation cutting tool for oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597439.7A CN113236171A (en) | 2021-05-31 | 2021-05-31 | Radial ablation cutting tool for oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113236171A true CN113236171A (en) | 2021-08-10 |
Family
ID=77135898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110597439.7A Pending CN113236171A (en) | 2021-05-31 | 2021-05-31 | Radial ablation cutting tool for oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113236171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116427874A (en) * | 2023-05-30 | 2023-07-14 | 西南石油大学 | High-temperature fusion cutting tool pressurized by drilling fluid |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030051870A1 (en) * | 2001-09-19 | 2003-03-20 | Robertson Michael C. | Radial cutting torch with mixing cavity |
| CN2670584Y (en) * | 2003-11-18 | 2005-01-12 | 台州盛世环境工程有限公司 | Heat pipe cutter |
| CN101619649A (en) * | 2009-07-27 | 2010-01-06 | 西安近代化学研究所 | Non-explosive ring-shaped device for cutting metal pipes |
| US8020619B1 (en) * | 2008-03-26 | 2011-09-20 | Robertson Intellectual Properties, LLC | Severing of downhole tubing with associated cable |
| CN105298421A (en) * | 2015-10-21 | 2016-02-03 | 中国石油天然气集团公司 | Speed-limited rotary cutting tool of coiled tubing abrasive water jetting |
| US20190128083A1 (en) * | 2017-10-31 | 2019-05-02 | Otto Torpedo Company | Radial Conduit Cutting System |
| CN110374531A (en) * | 2019-08-02 | 2019-10-25 | 西京学院 | A kind of multi-purpose underground pulling device of adopting guiding structure |
| US20190360318A1 (en) * | 2017-01-12 | 2019-11-28 | Zhongwei (Shanghai) Energy Technology Co. Ltd | Nozzle and injection device for use in underground coal gasification process and method for operating injection device |
-
2021
- 2021-05-31 CN CN202110597439.7A patent/CN113236171A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030051870A1 (en) * | 2001-09-19 | 2003-03-20 | Robertson Michael C. | Radial cutting torch with mixing cavity |
| CN2670584Y (en) * | 2003-11-18 | 2005-01-12 | 台州盛世环境工程有限公司 | Heat pipe cutter |
| US8020619B1 (en) * | 2008-03-26 | 2011-09-20 | Robertson Intellectual Properties, LLC | Severing of downhole tubing with associated cable |
| CN101619649A (en) * | 2009-07-27 | 2010-01-06 | 西安近代化学研究所 | Non-explosive ring-shaped device for cutting metal pipes |
| CN105298421A (en) * | 2015-10-21 | 2016-02-03 | 中国石油天然气集团公司 | Speed-limited rotary cutting tool of coiled tubing abrasive water jetting |
| US20190360318A1 (en) * | 2017-01-12 | 2019-11-28 | Zhongwei (Shanghai) Energy Technology Co. Ltd | Nozzle and injection device for use in underground coal gasification process and method for operating injection device |
| US20190128083A1 (en) * | 2017-10-31 | 2019-05-02 | Otto Torpedo Company | Radial Conduit Cutting System |
| CN110374531A (en) * | 2019-08-02 | 2019-10-25 | 西京学院 | A kind of multi-purpose underground pulling device of adopting guiding structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116427874A (en) * | 2023-05-30 | 2023-07-14 | 西南石油大学 | High-temperature fusion cutting tool pressurized by drilling fluid |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210810 |
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| WD01 | Invention patent application deemed withdrawn after publication |