CN110359873A - A kind of underground stub cable cutter and its application method - Google Patents
A kind of underground stub cable cutter and its application method Download PDFInfo
- Publication number
- CN110359873A CN110359873A CN201910603611.8A CN201910603611A CN110359873A CN 110359873 A CN110359873 A CN 110359873A CN 201910603611 A CN201910603611 A CN 201910603611A CN 110359873 A CN110359873 A CN 110359873A
- Authority
- CN
- China
- Prior art keywords
- stub cable
- instrument
- underground
- blind hole
- card instrument
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 29
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 239000012530 fluid Substances 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
- 238000005507 spraying Methods 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
- 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
A kind of underground stub cable cutter disclosed by the invention and its application method, belong to petroleum well logging technology field.Including interconnecting piece and cutting part, when salvaging chance card instrument, it is connect by interconnecting piece with top instrument string, the end for meeting card instrument is imported into blind hole by guide shoe face, blind hole is covered in the end for meeting card instrument, the stub cable that card instrument end is met in adjustment enters the sphere of action of cut surface and guide shoe face, when being exerted a force by the salvaging instrument string on top, cutting edge can cut off the stub cable for meeting card instrument end, to fundamentally solve influence of the stub cable to subsequent fishing remained in pit shaft under the premise of not destroying and meeting card instrument.Apparatus structure design rationally, improves the efficiency and success rate of salvage, has saved cost.
Description
Technical field
The invention belongs to petroleum well logging technology fields, and in particular to a kind of underground stub cable cutter and its application method.
Background technique
Remove by cable (or steel wire) mistake of instrument (or tool) in production well log or test process at present
Cheng Zhong, in the case where instrument (or tool) occurs meeting card, is often broken due to hole condition or construction operation etc.
Cable (or steel wire).The cable (or steel wire) in pit shaft is stayed in it sometimes appear that the case where stub cable (or steel wire), such as Fig. 2, this
Kind situation can bring difficulty to the fishing in later period.This is because carrying out fishing with conventional interior fishing lance or outer fishing lance
When, it is shorter due to staying in the cable in pit shaft (or steel wire), it can not be wound into above lance pawl, fishing is caused to fail.If
Salvaged using slip socket or three ball fishers, due to stub cable (or steel wire), cause slip socket or
Three ball fishers, which can not be successfully, to be caught the fishing head for falling well instrument (or tool) or salvages main body, and fishing success ratio is influenced.If
It can be to the instrument for falling well although the success rate of fishing can be improved using the destructive fishing such as punching salvaging
(or tool) causes and structural destruction, although instrument (or tool) salvages well, also due to the destruction itself being subject to and
It can not reuse, increase salvaging cost.
Summary of the invention
In order to overcome the problems of the above-mentioned prior art, the purpose of the present invention is to provide a kind of cuttings of underground stub cable
Device and its application method can be exerted a force by the salvaging instrument string on top, and the stub cable of card instrument end, the device knot are met in cutting
Structure design rationally, fundamentally solves influence of the stub cable remained in pit shaft to subsequent fishing, easy to operate.
The present invention is to be achieved through the following technical solutions:
The invention discloses a kind of underground stub cable cutters, including interconnecting piece and cutting part；Interconnecting piece is used for and top
Salvage instrument string connection；The hollow columnar structures of blind hole are equipped with centered on cutting part, blind hole is successively arranged from inside to outside at aperture
The cone angle in cut surface and guide shoe face, guide shoe face is greater than cut surface；
In use, blind hole, which covers, is meeting card instrument end, when salvaging instrument string force by top, cut surface can cut off chance
The stub cable of card instrument end.
Preferably, the cone angle of cut surface is 40 °~50 °.
Preferably, the cone angle in guide shoe face is 100 °~110 °.
Preferably, diameter of blind hole is meet card instrument end diameter 2/3~3/4.
Preferably, chamfering is equipped between interconnecting piece and cutting part.
It is further preferred that 90 ° of the angle < of chamfering.
Preferably, it is equipped in blind hole several with the external discharge orifice being connected to.
It is further preferred that discharge orifice and the angle of cutter axis are 30 °~60 °.
Preferably, annular boss is equipped between interconnecting piece and cutting part.
The invention also discloses the application methods of above-mentioned underground stub cable cutter, comprising the following steps:
Step 1: the interconnecting piece of cutter being salvaged into instrument string with top and is fixedly connected；
Step 2: cutting part 2 being extend into and is met near card instrument end, position is adjusted by guide shoe face, blind hole is covered and is meeting
Card instrument end, the stub cable for meeting card instrument end enter the sphere of action of cut surface；
Step 3: instrument string being salvaged by top and is exerted a force to underground stub cable cutter, meets card instrument until cut surface is cut off
The stub cable of end completes the cutting of underground stub cable.
Compared with prior art, the invention has the following beneficial technical effects:
Stub cable cutter in underground disclosed by the invention passes through interconnecting piece and top instrument string when salvaging chance card instrument
The end for meeting card instrument is imported blind hole by guide shoe face by connection, and blind hole is covered in the end for meeting card instrument, and card is met in the guidance of guide shoe face
The stub cable of instrument end enters the sphere of action of cut surface.When being exerted a force by the salvaging instrument string on top, cut surface can
The stub cable of card instrument end is met in cutting, to fundamentally solve to remain in pit shaft under the premise of not destroying and meeting card instrument
Influence of the stub cable to subsequent fishing.Apparatus structure design rationally, improves the efficiency and success rate of salvage,
Cost is saved.
Further, the cone angle of cut surface is 40 °~50 °, due to meeting card instrument (or tool) the top fishing head angle
Generally between 60 °~90 °, dissection can be better played.
Further, the cone angle in guide shoe face is 100 °~110 °, can make to meet card instrument end more smoothly into cutting
The sphere of action in face.
Further, diameter of blind hole is meet card instrument end diameter 2/3~3/4, and cut surface can be made to reach ideal
Cutting effect.
Further, it is equipped with chamfering between interconnecting piece and cutting part, so that the sundries in well is smoothly flowed through, not will cause
Silting influences the progress of operation.
Further, the liquid in the pit shaft for entering blind hole can be discharged, prevent piston by the discharge orifice in blind hole
Effect makes chance card instrument end cannot be introduced into blind hole by resistance.
Further, discharge orifice and the angle of cutter axis are 30 °~60 °, can be effectively by cutter intermediate blind
Fluid removal in hole, angle is smaller, and the resistance of liquid discharge is smaller.
Further, the annular boss between interconnecting piece and cutting part, when there are the accidents such as interconnecting piece fracture, energy
Enough by the crawl of other tools, stationary ring boss, continue operation.
The invention also discloses the application methods of above-mentioned underground stub cable cutter, to the dependence of equipment and operating technology
It is small, it is easy to operate, do not destroying the while success rate with higher for meeting card instrument.
Detailed description of the invention
Fig. 1 is the overall schematic of underground stub cable cutter of the invention；
Fig. 2 is the schematic diagram for remaining the chance card instrument of stub cable；
Fig. 3 is underground stub cable cutter of the invention and meets the status diagram when stub cable on card instrument contacts；
Fig. 4 is state signal when underground stub cable cutter cuts of the invention meet the stub cable moment on card instrument
Figure；
Fig. 5 is that underground stub cable cutter of the invention will meet the status diagram after the stub cable on card instrument is cut away.
In figure, 1- interconnecting piece, 2- cutting part, 2-1- blind hole, 2-2- cut surface, 2-3- guide shoe face, 2-4- discharge orifice, 3- chance
Card instrument, 4- stub cable.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
A kind of underground stub cable cutter disclosed by the invention, such as Fig. 1, including interconnecting piece 1 and cutting part 2, can be even
Setting can be grabbed fixed annular boss by other fishing devices between socket part 1 and cutting part 2.Can interconnecting piece 1 with cut
Cut the chamfering of 0~90 ° of processing on the outer peripheral surface between portion 2；Interconnecting piece 1 is used to salvage instrument string with top and connect；Cutting part 2 is
Center is equipped with the hollow columnar structures of blind hole 2-1, can be arranged in blind hole 2-1 it is several with the external discharge orifice 2-4 being connected to, it is excellent
The angle of selection of land, discharge orifice 2-4 and cutter axis is 30 °~60 °.
Cone angle different cut surface 2-2 and guide shoe face 2-3, guide shoe face 2-3 are successively arranged at the aperture blind hole 2-1 from inside to outside
Cone angle be greater than cut surface 2-2, due to meet card instrument (or tool) the top fishing head cone angle generally between 60 °~90 °,
The cone angle of guide shoe face 2-3 is set as 100 °~110 °, therefore the cone angle of cut surface 2-2 is less than 60 °~90 °, usually meets than practical
Small 20 ° of cone angle or so of card instrument (or tool) the top fishing head, the preferably cone angle of cut surface 2-2 are 40 °~50 °.Cutting
The hardness of face 2-2 be greater than meet card instrument end stub cable, can by processing when cut surface 2-2 is quenched, carburizing,
The techniques such as surface spraying are realized；The diameter of blind hole 2-1 is meet card instrument end diameter 2/3~3/4.It is being met when blind hole 2-1 covers
Card instrument end, and by top salvage instrument string force when, cut surface 2-2 and meet card instrument end collective effect, can cut
The disconnected stub cable for meeting card instrument end.
The application method of underground stub cable cutter of the invention, comprising the following steps:
Step 1: the interconnecting piece 1 of cutter being salvaged into instrument string with top and is fixedly connected；
Step 2: such as Fig. 3, Fig. 4, the cutting part 2 of cutter being extend into and is met near card instrument end, guide shoe face 2-3 is passed through
Position is adjusted, blind hole 2-1 is covered and is meeting card instrument end, the stub cable for meeting card instrument end enters cut surface 2-2 and guide shoe face
The sphere of action of 2-3；
Step 3: by salvaging instrument string force, until cut surface 2-2 cuts off the stub cable of chance card instrument end, completion well
Lower stub cable cutting.
Claims (10)
1. a kind of underground stub cable cutter, which is characterized in that including interconnecting piece (1) and cutting part (2)；Interconnecting piece (1) is used for
Instrument string is salvaged with top to connect；The hollow columnar structures of blind hole (2-1), the aperture blind hole (2-1) are equipped with centered on cutting part (2)
Place is successively arranged cut surface (2-2) and guide shoe face (2-3) from inside to outside, and the cone angle of guide shoe face (2-3) is greater than cut surface (2-2)；
In use, blind hole (2-1), which covers, is meeting card instrument end, when salvaging instrument string force by top, cut surface (2-2) can
The stub cable of card instrument end is met in cutting.
2. stub cable cutter in underground according to claim 1, which is characterized in that the cone angle of cut surface (2-2) be 40 °~
50°。
3. stub cable cutter in underground according to claim 1, which is characterized in that the cone angle of guide shoe face (2-3) is 100 °
~110 °.
4. stub cable cutter in underground according to claim 1, which is characterized in that the diameter of blind hole (2-1) is to meet card instrument
The 2/3~3/4 of device end diameter.
5. stub cable cutter in underground according to claim 1, which is characterized in that between interconnecting piece (1) and cutting part (2)
Equipped with chamfering.
6. stub cable cutter in underground according to claim 5, which is characterized in that 90 ° of the angle < of chamfering.
7. stub cable cutter in underground according to claim 1, which is characterized in that be equipped in blind hole (2-1) it is several with it is outer
The discharge orifice (2-4) of portion's connection.
8. stub cable cutter in underground according to claim 7, which is characterized in that discharge orifice (2-4) and cutter axis
Angle be 30 °~60 °.
9. stub cable cutter in underground according to claim 1, which is characterized in that between interconnecting piece (1) and cutting part (2)
Equipped with annular boss.
10. the application method of underground stub cable cutter described in any one according to claim 1~9, which is characterized in that including
Following steps:
Step 1: the interconnecting piece (1) of cutter being salvaged into instrument string with top and is fixedly connected；
Step 2: cutting part 2 being extend into and is met near card instrument end, position is adjusted by guide shoe face (2-3), makes blind hole (2-1)
It covers and is meeting card instrument end, the stub cable for meeting card instrument end enters the sphere of action of cut surface (2-2)；
Step 3: instrument string being salvaged by top and is exerted a force to underground stub cable cutter, meets card instrument until cut surface (2-2) is cut off
The stub cable of device end completes the cutting of underground stub cable.
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 true CN110359873A (en) | 2019-10-22 |
| CN110359873B 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) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110359873B (en) | 2021-11-02 |
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