CN110359873B - Underground short cable cutter and using method thereof - Google Patents
Underground short cable cutter and using method thereof Download PDFInfo
- Publication number
- CN110359873B CN110359873B CN201910603611.8A CN201910603611A CN110359873B CN 110359873 B CN110359873 B CN 110359873B CN 201910603611 A CN201910603611 A CN 201910603611A CN 110359873 B CN110359873 B CN 110359873B
- Authority
- CN
- China
- Prior art keywords
- short cable
- instrument
- cutting
- card
- blind hole
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 56
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
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
- E21B29/04—Cutting of wire lines or the like
-
- 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)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Harvester Elements (AREA)
Abstract
The invention discloses an underground short cable cutter and a using method thereof, and belongs to the technical field of petroleum logging. Including connecting portion and cutting part, when salvaging and meeting the card instrument, be connected through connecting portion and upper portion instrument cluster, will meet the leading-in blind hole of tip of card instrument through leading the vamp, the blind hole cover is at the tip of meeting the card instrument, the adjustment meets the short cable that card instrument tip gets into the effect scope of cutting plane and guide shoe face, when salvaging instrument cluster application of force through upper portion, the cutting edge can cut off the short cable that meets card instrument tip, thereby fundamentally solves the influence of the short cable of remaining in the pit shaft to follow-up salvaging operation under the prerequisite of not destroying and meeting the card instrument. The device structural design is reasonable, has improved the efficiency and the success rate of salvage work, has practiced thrift the cost.
Description
Technical Field
The invention belongs to the technical field of petroleum logging, and particularly relates to an underground short cable cutter and a using method thereof.
Background
At present, in the process of lifting and lowering an instrument (or a tool) through a cable (or a steel wire) in the process of logging a production well or testing, due to the well conditions, construction operation and the like, the cable (or the steel wire) is usually broken under the condition that the instrument (or the tool) is blocked. The wireline (or slickline) left in the wellbore sometimes presents a short wireline (or slickline) condition, as shown in fig. 2, which can present difficulties for later fishing operations. This is because when fishing is performed using a conventional inner or outer fishing spear, the fishing operation fails because the cable (or wire) remaining in the wellbore is short and cannot be wound around the spear. If the slip overshot or the three-ball fisher is used for fishing, due to the reason of a short cable (or a steel wire), the slip overshot or the three-ball fisher cannot smoothly catch a fishing head or a fishing main body of a well-dropping instrument (or a tool), and the fishing success rate is influenced. If destructive fishing operations such as punching fishing and the like are adopted, although the success rate of the fishing operations can be improved, structural damage can be caused to instruments (or tools) falling into a well, and the instruments (or tools) can not be reused due to the damage of the instruments (or tools) when the well is fished out, so that the fishing cost is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the underground short cable cutter and the using method thereof.
The invention is realized by the following technical scheme:
the invention discloses an underground short cable cutter which comprises a connecting part and a cutting part, wherein the connecting part is arranged on the connecting part; the connecting part is used for being connected with the upper fishing instrument string; the cutting part is a hollow columnar structure with a blind hole in the center, a cutting surface and a shoe guiding surface are sequentially arranged at the position of the blind hole from inside to outside, and the cone angle of the shoe guiding surface is larger than that of the cutting surface;
when the fishing tool is used, the blind hole is sleeved at the end part of the instrument which is blocked, and when the fishing tool string on the upper part applies force, the cutting surface can cut off the short cable at the end part of the instrument which is blocked.
Preferably, the taper angle of the cutting surface is 40 ° to 50 °.
Preferably, the taper angle of the upper guide is 100-110 °.
Preferably, the diameter of the blind hole is 2/3-3/4 of the diameter of the end part of the card-catching instrument.
Preferably, a chamfer is provided between the connecting portion and the cutting portion.
Further preferably, the angle of the chamfer is < 90 °.
Preferably, the blind hole is provided with a plurality of discharge holes communicated with the outside.
Further preferably, the discharge aperture is angled from 30 to 60 degrees relative to the cutter axis.
Preferably, an annular boss is provided between the connecting portion and the cutting portion.
The invention also discloses a using method of the underground short cable cutter, which comprises the following steps:
step 1: fixedly connecting the connecting part of the cutter with the upper salvaging instrument string;
step 2: the cutting part 2 is extended into the position near the end part of the card encountering instrument, the position is adjusted by guiding the shoe surface, the blind hole is sleeved at the end part of the card encountering instrument, and a short cable at the end part of the card encountering instrument enters the action range of a cutting surface;
and step 3: and applying force to the underground short cable cutter through the upper fishing instrument string until the cutting surface cuts off the short cable at the end part of the instrument, so as to finish the cutting of the underground short cable.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses an underground short cable cutter which is connected with an upper instrument in series through a connecting part when an instrument encountering a card is salvaged, the end part of the instrument encountering the card is led into a blind hole through a guide shoe surface, the blind hole is sleeved at the end part of the instrument encountering the card, and the guide shoe surface guides a short cable at the end part of the instrument encountering the card to enter the action range of a cutting surface. When force is applied to the fishing instrument string on the upper portion, the cutting surface can cut off the short cable at the end portion of the fishing instrument string, and therefore the influence of the short cable remained in the shaft on subsequent fishing operation is fundamentally avoided on the premise that the fishing instrument string is not damaged. The device structural design is reasonable, has improved the efficiency and the success rate of salvage work, has practiced thrift the cost.
Furthermore, the taper angle of the cutting surface is 40-50 degrees, and the included angle of the fishing head at the uppermost end of the instrument (or tool) is generally 60-90 degrees when meeting the clamp, so that the cutting function can be better realized.
Furthermore, the taper angle of the guide shoe surface is 100-110 degrees, so that the end part of the clamping instrument can smoothly enter the action range of the cutting surface.
Furthermore, the diameter of the blind hole is 2/3-3/4 of the diameter of the end part of the clamping instrument, so that the cutting surface can achieve an ideal cutting effect.
Furthermore, a chamfer is arranged between the connecting part and the cutting part, so that sundries in the well can smoothly flow through the chamfer, and the operation is not affected due to clogging.
Furthermore, the discharge hole in the blind hole can discharge liquid entering a shaft of the blind hole, so that a piston effect is prevented, and the end part of the instrument which meets the card cannot enter the blind hole under resistance.
Furthermore, the included angle between the discharge hole and the axis of the cutter is 30-60 degrees, so that the liquid in the blind hole in the middle of the cutter can be effectively discharged, and the smaller the included angle is, the smaller the resistance to liquid discharge is.
Furthermore, when unexpected events such as the breakage of the connecting part occur, the annular boss between the connecting part and the cutting part can be grabbed and fixed by other tools to continue the operation.
The invention also discloses a using method of the underground short cable cutter, which has small dependence on equipment and operation technology, is simple to operate, and has higher success rate while not damaging a card-encountering instrument.
Drawings
FIG. 1 is an overall schematic view of a downhole short cable cutter of the present invention;
FIG. 2 is a schematic view of a card encounter instrument with residual short cables;
FIG. 3 is a schematic view of the downhole short cable cutter of the present invention in contact with a short cable on a sonde;
FIG. 4 is a schematic view of the instant the downhole short cable cutter of the present invention cuts a short cable on a stuck instrument;
FIG. 5 is a schematic diagram of the present invention showing the short cable cutter cutting the short cable on the jam detector.
In the figure, 1-connecting part, 2-cutting part, 2-1-blind hole, 2-2-cutting surface, 2-3-guiding shoe surface, 2-4-discharging hole, 3-card-encountering instrument and 4-short cable.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the invention discloses a downhole short cable cutter, which comprises a connecting part 1 and a cutting part 2 as shown in figure 1, wherein an annular boss which can be grabbed and fixed by other fishing devices can be arranged between the connecting part 1 and the cutting part 2. A chamfer of 0-90 degrees can be processed on the peripheral surface between the connecting part 1 and the cutting part 2; the connecting part 1 is used for being connected with an upper fishing instrument string; the cutting part 2 is a hollow columnar structure with a blind hole 2-1 in the center, a plurality of discharge holes 2-4 communicated with the outside can be arranged in the blind hole 2-1, and preferably, the included angle between the discharge holes 2-4 and the axis of the cutter is 30-60 degrees.
The cutting surface 2-2 and the guiding surface 2-3 with different taper angles are sequentially arranged at the orifice of the blind hole 2-1 from inside to outside, the taper angle of the guiding surface 2-3 is larger than that of the cutting surface 2-2, the taper angle of the fishing head at the uppermost end of the clamping instrument (or tool) is generally 60-90 degrees, and the taper angle of the guiding surface 2-3 is 100-110 degrees, so the taper angle of the cutting surface 2-2 is smaller than 60-90 degrees, which is usually about 20 degrees smaller than that of the fishing head at the uppermost end of the actual clamping instrument (or tool), and the taper angle of the cutting surface 2-2 is preferably 40-50 degrees. The hardness of the cutting surface 2-2 is greater than that of a short cable at the end part of the clamping instrument, and the cutting surface 2-2 can be quenched, carburized, surface-sprayed and the like during processing; the diameter of the blind hole 2-1 is 2/3-3/4 of the diameter of the end part of the card-contacting instrument. When the blind hole 2-1 is sleeved at the end part of the instrument encountering the card and applies force through the fishing instrument string at the upper part, the cutting surface 2-2 and the end part of the instrument encountering the card act together to cut off a short cable at the end part of the instrument encountering the card.
The use method of the underground short cable cutter comprises the following steps:
step 1: fixedly connecting the connecting part 1 of the cutter with the upper fishing instrument string;
step 2: as shown in fig. 3 and 4, the cutting part 2 of the cutter extends into the position near the end part of the card encountering instrument, the position is adjusted by the guiding shoe surface 2-3, the blind hole 2-1 is sleeved at the end part of the card encountering instrument, and a short cable at the end part of the card encountering instrument enters the action range of the cutting surface 2-2 and the guiding shoe surface 2-3;
and step 3: and applying force through the fishing instrument string until the short cable at the end part of the clamping instrument is cut off by the cutting surface 2-2, so that the underground short cable cutting is completed.
Claims (8)
1. A downhole short cable cutter is characterized by comprising a connecting part (1) and a cutting part (2); the connecting part (1) is used for being connected with an upper fishing instrument string; the cutting part (2) is of a hollow columnar structure, the center of the cutting part is provided with a blind hole (2-1), the orifice of the blind hole (2-1) is sequentially provided with a cutting surface (2-2) and a shoe guiding surface (2-3) from inside to outside, and the cone angle of the shoe guiding surface (2-3) is larger than that of the cutting surface (2-2); the cone angle of the cutting surface (2-2) is 40-50 degrees; a plurality of discharge holes (2-4) communicated with the outside are arranged in the blind hole (2-1);
when the fishing tool is used, the blind hole (2-1) is sleeved at the end part of the instrument which meets the card, when the fishing tool string on the upper part applies force, the cutting surface (2-2) descends, and the cutting surface (2-2) can cut off the short cable at the end part of the instrument which meets the card.
2. A downhole short cable cutter according to claim 1, wherein the angle of taper of the guiding shoe covers (2-3) is 100 ° -110 °.
3. The downhole short cable cutter according to claim 1, wherein the diameter of the blind hole (2-1) is 2/3-3/4 of the diameter of the end of the stuck tool.
4. A downhole short cable cutter according to claim 1, wherein a chamfer is provided between the connection part (1) and the cutting part (2).
5. The downhole short cable cutter of claim 4, wherein the angle of the chamfer is < 90 °.
6. A downhole short cable cutter according to claim 1, wherein the angle of the drainage apertures (2-4) to the cutter axis is 30-60 °.
7. A downhole short cable cutter according to claim 1, characterized in that an annular boss is provided between the connection part (1) and the cutting part (2).
8. The use method of the downhole short cable cutter according to any one of claims 1 to 7, characterized by comprising the following steps:
step 1: fixedly connecting the connecting part (1) of the cutter with the upper fishing instrument string;
step 2: the cutting part (2) is extended into the position near the end part of the card encountering instrument, the position is adjusted by the shoe guiding surface (2-3), the blind hole (2-1) is sleeved at the end part of the card encountering instrument, and a short cable at the end part of the card encountering instrument enters the action range of the cutting surface (2-2);
and step 3: force is applied to the underground short cable cutter through the upper fishing instrument string until the short cable at the end part of the instrument is cut off by the cutting surface (2-2), and the underground short cable cutting is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603611.8A CN110359873B (en) | 2019-07-05 | 2019-07-05 | Underground short cable cutter and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603611.8A CN110359873B (en) | 2019-07-05 | 2019-07-05 | Underground short cable cutter and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110359873A CN110359873A (en) | 2019-10-22 |
| CN110359873B true CN110359873B (en) | 2021-11-02 |
Family
ID=68218149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910603611.8A Active CN110359873B (en) | 2019-07-05 | 2019-07-05 | Underground short cable cutter and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110359873B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU981576A1 (en) * | 1981-02-17 | 1982-12-15 | Предприятие П/Я М-5616 | Cable catcher |
| CN2703865Y (en) * | 2004-06-18 | 2005-06-08 | 中国石化集团胜利石油管理局渤海钻井总公司 | Flexible sunk-matter aalvage grinding-milling tool |
| CN201024950Y (en) * | 2007-05-25 | 2008-02-20 | 大庆油田有限责任公司 | Cable cutter for under-well measurement and adjustment instrument |
| CN201404988Y (en) * | 2008-12-18 | 2010-02-17 | 济南铸锻所捷迈机械有限公司 | Piece cutter |
| US7810553B2 (en) * | 2005-07-12 | 2010-10-12 | Smith International, Inc. | Coiled tubing wireline cutter |
| CN203702131U (en) * | 2014-01-07 | 2014-07-09 | 中国石油集团测井有限公司生产测井中心 | Self-sealing type petroleum well mouth cable protection device |
| WO2017007490A1 (en) * | 2015-07-09 | 2017-01-12 | Halliburton Energy Services, Inc. | Downhole wire retrieval device for metallic and non-metallic wire |
| CN206578886U (en) * | 2017-02-20 | 2017-10-24 | 中山市盛屹机电科技有限公司 | Pole cutting tool |
| CN107701138A (en) * | 2017-11-16 | 2018-02-16 | 中国海洋石油总公司 | A kind of smart well pipeline cutting tool |
| CN208330248U (en) * | 2018-04-27 | 2019-01-04 | 中国石油天然气股份有限公司 | Underground rope shearing device |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB267747A (en) * | 1926-05-11 | 1927-03-24 | Oil Well Supply Co | Improvements in rope knife and rope serving device for use in wells |
| EP0154520A3 (en) * | 1984-03-02 | 1986-08-27 | Smith International (North Sea) Limited | Releasable spear for retrieving tubular members from a well bore |
| US7264060B2 (en) * | 2003-12-17 | 2007-09-04 | Baker Hughes Incorporated | Side entry sub hydraulic wireline cutter and method |
| US7427091B2 (en) * | 2005-09-01 | 2008-09-23 | National-Oilwell, Dht, L.P. | Spear head overshot for use in a cable guided fishing assembly |
| CN1932429A (en) * | 2006-10-09 | 2007-03-21 | 中国兵器工业第二一三研究所 | Bridge stuffing hard connecting impact type ignitor |
| CN201148852Y (en) * | 2007-12-19 | 2008-11-12 | 吐哈石油勘探开发指挥部工程技术研究院 | Steel wire cutting knife for cutting off down-hole steel wire |
| US8070131B2 (en) * | 2008-10-27 | 2011-12-06 | Vetco Gray Inc. | Recessed cutting edge for wire cutting gate valves |
| CN201412100Y (en) * | 2009-04-01 | 2010-02-24 | 常琦 | Wire rope fishing tool |
| US8181699B2 (en) * | 2009-05-20 | 2012-05-22 | Baker Hughes Incorporated | Auxiliary conduit cutting apparatus |
| CN102033245B (en) * | 2009-09-30 | 2012-09-26 | 中国船舶重工集团公司第七一○研究所 | Acoustic releaser actuating mechanism capable of cutting cable |
| CN102041974B (en) * | 2011-01-05 | 2013-07-31 | 深圳市远东石油钻采工程有限公司 | Bypass short-circuit structure of abandoned deep water well cutting device and cementing plug method thereof |
| NO2771537T3 (en) * | 2011-10-27 | 2018-07-21 | ||
| US8899330B2 (en) * | 2012-06-29 | 2014-12-02 | Baker Hughes Incorporated | Devices and methods for severing a tube-wire |
| CN102966328B (en) * | 2012-11-25 | 2015-02-25 | 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 | Novel electro-hydraulic integral bridge plug release tool |
| CA2975143C (en) * | 2015-01-26 | 2022-11-15 | William T. Bell | High energy severing tool with pressure balanced explosives |
| CN109723431B (en) * | 2018-11-22 | 2022-10-04 | 中国石油天然气集团有限公司 | Measurable tension well pulley gear |
| CN109500913A (en) * | 2019-01-09 | 2019-03-22 | 深圳市沃尔新能源电气科技股份有限公司 | The Scissoring device of cable shielding |
-
2019
- 2019-07-05 CN CN201910603611.8A patent/CN110359873B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU981576A1 (en) * | 1981-02-17 | 1982-12-15 | Предприятие П/Я М-5616 | Cable catcher |
| CN2703865Y (en) * | 2004-06-18 | 2005-06-08 | 中国石化集团胜利石油管理局渤海钻井总公司 | Flexible sunk-matter aalvage grinding-milling tool |
| US7810553B2 (en) * | 2005-07-12 | 2010-10-12 | Smith International, Inc. | Coiled tubing wireline cutter |
| CN201024950Y (en) * | 2007-05-25 | 2008-02-20 | 大庆油田有限责任公司 | Cable cutter for under-well measurement and adjustment instrument |
| CN201404988Y (en) * | 2008-12-18 | 2010-02-17 | 济南铸锻所捷迈机械有限公司 | Piece cutter |
| CN203702131U (en) * | 2014-01-07 | 2014-07-09 | 中国石油集团测井有限公司生产测井中心 | Self-sealing type petroleum well mouth cable protection device |
| WO2017007490A1 (en) * | 2015-07-09 | 2017-01-12 | Halliburton Energy Services, Inc. | Downhole wire retrieval device for metallic and non-metallic wire |
| CN206578886U (en) * | 2017-02-20 | 2017-10-24 | 中山市盛屹机电科技有限公司 | Pole cutting tool |
| CN107701138A (en) * | 2017-11-16 | 2018-02-16 | 中国海洋石油总公司 | A kind of smart well pipeline cutting tool |
| CN208330248U (en) * | 2018-04-27 | 2019-01-04 | 中国石油天然气股份有限公司 | Underground rope shearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110359873A (en) | 2019-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4930587A (en) | Coring tool | |
| US10544655B2 (en) | Method and apparatus for severing a drill string | |
| CN205503076U (en) | Down -hole junk slip socket | |
| CN110359873B (en) | Underground short cable cutter and using method thereof | |
| CN104499979B (en) | It is changed without the method and device that slips salvages different-diameter fish | |
| CN114607308B (en) | Bridge plug fishing tool | |
| US2551995A (en) | Rotary core drill with jar mechanism | |
| CN207960555U (en) | A kind of fishing sleeve milling integrated apparatus | |
| CN212428688U (en) | Returnable fishing spear | |
| CN213063494U (en) | Quick cable hanger | |
| CN103573204A (en) | Fallen steel wire fisher passing through tapered string | |
| RU2301879C1 (en) | Method for torn pipe removal from well | |
| CN210422536U (en) | Coupling pipe column external cutting and fishing integrated tool | |
| US2710654A (en) | Oil well tool guide | |
| CN212003062U (en) | Drag cup type anti-blocking centralizer | |
| CN209818058U (en) | Power supply wiring device for pulse generator of wireless transmission device | |
| CN212428682U (en) | Fishing tool | |
| CN207212300U (en) | Can guide type hydraulic releasing tool | |
| US6412552B1 (en) | Cable protector | |
| CN214836095U (en) | Novel underground drilling robot capable of preventing cable from winding | |
| CN213016267U (en) | Returnable double-slip overshot | |
| CN107269241A (en) | Can guide type hydraulic releasing tool | |
| US20040140101A1 (en) | Wireline fishing safety sleeve | |
| US2240095A (en) | Rock drill bit cone catcher | |
| CN114562228B (en) | Drilling accident handling device for improving well integrity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |