CN111075384A - Spiral guide type underground steel wire rope fishing device - Google Patents
Spiral guide type underground steel wire rope fishing device Download PDFInfo
- Publication number
- CN111075384A CN111075384A CN202010008080.0A CN202010008080A CN111075384A CN 111075384 A CN111075384 A CN 111075384A CN 202010008080 A CN202010008080 A CN 202010008080A CN 111075384 A CN111075384 A CN 111075384A
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- China
- Prior art keywords
- pawl
- wire rope
- steel wire
- shaft
- inner cylinder
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims description 8
- 210000000078 claw Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/125—Grappling tools, e.g. tongs or grabs specially adapted for parted wire line or ropes
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- 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)
- Ropes Or Cables (AREA)
Abstract
The invention discloses a spiral guide type underground steel wire rope fishing device for underground fishing operation, which comprises an upper joint (1), a jaw (3), a chuck with a shaft (5), a pawl support (6), a hollow shaft motor (10), a guide shoe (12), a spiral guide device (13), a main shaft (14), a ratchet wheel (18), a pawl (19), a jaw support (24) and the like; the hollow shaft motor (10) rotates positively to drive the spiral guide device (13) to rotate, and the steel wire rope is guided to enter the fishing device; the hollow shaft motor (10) rotates reversely, the belt shaft chuck (5) is driven to rotate by the meshing of the ratchet wheel (18) and the pawl (19), the steel wire rope is clamped by the clamping jaw (3), and the fishing tool is lifted up to realize steel wire rope fishing; the invention can effectively solve the problem of fishing when the underground steel wire rope is close to the well wall, and improves the efficiency and the safety rate of the steel wire rope fishing operation.
Description
Technical Field
The invention belongs to an oil field underground fishing tool, and particularly relates to an underground steel wire rope fishing device.
Background
In the oil field, well construction operation in-process, the instrument often can appear and carry wire rope and fall into the phenomenon in the pit, and wire rope has the hardness height, and the characteristics that toughness is strong fall into the condition that wire rope hugs closely the wall of a well in the well probably appears after the fracture, therefore traditional fishing tool hardly realizes wire rope's salvage.
Disclosure of Invention
The purpose of the invention is: the spiral guide type underground steel wire rope fishing device is simple in structure, convenient to assemble and high in fishing efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: a spiral guide type underground steel wire rope fishing device mainly comprises an upper joint, an outer cylinder 1, a jaw, an inner cylinder 1, a chuck with a shaft, a pawl support, an inner cylinder 2, a bearing 1, a hollow shaft motor, a motor protective shell, a guide shoe, a spiral guide device, a main shaft, a bearing 2, an outer cylinder 2, a ratchet wheel, a pawl, a bearing 3 and a jaw support; the upper half part of the upper joint is provided with a cable through hole, the upper part of the upper joint is provided with a conical thread which can be connected with the coiled tubing, and the lower part of the upper joint is connected with the inner cylinder 1 through the thread; the chuck with the shaft is provided with a through hole along the axial direction, the upper end of the chuck with the shaft is disc-shaped and is provided with a wire coiling thread, and the lower end of the chuck with the shaft is a stepped shaft; a groove is formed in the pawl support, the upper part of the pawl support is circumferentially fixed on the chuck with the shaft through a flat key, and the pawl support is axially positioned by the round nut 2; the ratchet wheel is circumferentially fixed on the main shaft through a flat key and is axially positioned by the round nut 1, and two gear teeth are symmetrically arranged on the ratchet wheel along the diameter and are meshed with the pawl; the upper end of the inner cylinder 1 is connected with the upper joint through threads, the lower end of the inner cylinder 1 is connected with the inner cylinder 2 through tapered threads, and a bearing seat hole is axially formed in the inner part of the inner cylinder; the motor protection shell is divided into an upper part and a lower part, the upper part and the lower part are connected through conical threads, the lower end of the motor protection shell is provided with a bolt hole, and the side edge of the motor protection shell is provided with an arc-shaped key groove; the pawl is arc-shaped, one end of the pawl is provided with a hook, and the other end of the pawl is provided with a through hole and is connected with the pawl support through a bolt; the spiral guiding device is a spiral steel wire with 6-degree taper.
The outer cylinder 1 is cylindrical, the upper end of the outer cylinder is in threaded connection with the upper connector, the lower end of the outer cylinder is in threaded connection with the outer cylinder 2, and an annular space formed by the outer cylinder 1, the inner cylinder 1 and the inner cylinder 2 is a cable channel.
The clamping jaw support is connected with the inner barrel 1 through a bolt, and a slide way is arranged on the clamping jaw support to restrain the clamping jaw from moving along a straight line.
The main shaft is a hollow stepped shaft, a key groove is formed in the upper end of the main shaft, a spline is formed in the middle of the main shaft, and threads are formed in the lower end of the main shaft.
The guide shoe is a conical cavity, the upper end of the guide shoe is connected with the main shaft through threads, and the lower end of the guide shoe is welded with a spiral guide device.
The hollow shaft motor is provided with a spline groove, the spline groove is connected with the main shaft through a spline, and the spline groove is fixed in the motor protective shell through a bolt.
The invention has the following advantages: the invention provides a brand-new design scheme of a fishing device for an underground steel wire rope, which can solve the problem of fishing when the steel wire rope is tightly attached to a well wall. The invention has the advantages of simple structure, low cost, high fishing efficiency and the like.
Drawings
FIG. 1 is an assembly view of a spiral guided downhole wireline fishing device according to the present invention.
Fig. 2 is a sectional view taken along a-a of fig. 1.
FIG. 3 is a three-dimensional view of the ratchet.
Fig. 4 is a three-dimensional view of the pawl.
Fig. 5 is a three-dimensional view of a spindle chuck.
Fig. 6 is a three-dimensional view of the motor protective case.
In the figure: 1-upper joint, 2-outer cylinder 1, 3-jaw, 4-inner cylinder 1, 5-chuck with shaft, 6-pawl support, 7-bolt 1, 8-inner cylinder 2, 9-bearing 1, 10-hollow shaft motor, 11-motor protective shell, 12-guide shoe, 13-spiral guide device, 14-main shaft, 15-bearing 2, 16-outer cylinder 2, 17-bolt 2, 18-ratchet wheel, 19-pawl, 20-round nut 1, 21-round nut 2, 22-bearing 3, 23-bolt 3, 24-jaw support and 25-cable through hole.
Detailed Description
According to the attached drawings, the spiral guide type underground steel wire rope fishing device mainly comprises: the device comprises an upper joint, an outer cylinder 1, a jaw, an inner cylinder 1, a chuck with a shaft, a pawl support, an inner cylinder 2, a bearing 1, a hollow shaft motor, a motor protective shell, a guide shoe, a spiral guide device, a main shaft, a bearing 2, an outer cylinder 2, a ratchet wheel, a pawl, a bearing 3 and a jaw support; the upper half part of the upper joint is provided with a cable through hole, the upper part of the upper joint is provided with a conical thread which can be connected with the coiled tubing, and the lower part of the upper joint is connected with the inner cylinder 1 through the thread; the chuck with the shaft is provided with a through hole along the axial direction, the upper end of the chuck with the shaft is disc-shaped and is provided with a wire coiling thread, and the lower end of the chuck with the shaft is a stepped shaft; a groove is formed in the pawl support, the upper part of the pawl support is circumferentially fixed on the chuck with the shaft through a flat key, and the pawl support is axially positioned by the round nut 2; the ratchet wheel is circumferentially fixed on the main shaft through a flat key and is axially positioned by the round nut 1, and two gear teeth are symmetrically arranged on the ratchet wheel along the diameter and are meshed with the pawl; the upper end of the inner cylinder 1 is connected with the upper joint through threads, the lower end of the inner cylinder 1 is connected with the inner cylinder 2 through tapered threads, and a bearing seat hole is axially formed in the inner part of the inner cylinder; the motor protection shell is divided into an upper part and a lower part, the upper part and the lower part are connected through conical threads, the lower end of the motor protection shell is provided with a bolt hole, and the side edge of the motor protection shell is provided with an arc-shaped key groove; the pawl is arc-shaped, one end of the pawl is provided with a hook, and the other end of the pawl is provided with a through hole and is connected with the pawl support through a bolt; the spiral guiding device is a spiral steel wire with 6-degree taper.
By adopting the structure, when the hollow shaft motor drives the spiral guide device to operate, the clamping jaw can not clamp, and the steel wire rope can smoothly enter the clamping part in the fishing device.
The outer cylinder 1 is cylindrical, the upper end of the outer cylinder is in threaded connection with the upper connector, the lower end of the outer cylinder is in threaded connection with the outer cylinder 2, and an annular space formed by the outer cylinder 1, the inner cylinder 1 and the inner cylinder 2 is a cable channel.
The clamping jaw support is connected with the inner barrel 1 through a bolt, and a slide way is arranged on the clamping jaw support to restrain the clamping jaw from moving along a straight line.
The main shaft is a hollow stepped shaft, a key groove is formed in the upper end of the main shaft, a spline is formed in the middle of the main shaft, and threads are formed in the lower end of the main shaft.
The guide shoe is a conical cavity, the upper end of the guide shoe is connected with the main shaft through threads, and the lower end of the guide shoe is welded with a spiral guide device.
The hollow shaft motor is provided with a spline groove, the spline groove is connected with the main shaft through a spline, and the spline groove is fixed in the motor protective shell through a bolt.
By adopting the structure, the spline groove is arranged on the hollow shaft motor to ensure that the rotary motion of the motor can be transmitted to the spiral guide device and the ratchet wheel.
When the fishing tool works, the upper joint is connected with the coiled tubing, and the fishing device is conveyed to the broken steel wire rope through the coiled tubing. The hollow shaft motor rotates in the positive direction to drive the spiral guide device to rotate, the lower end of the spiral guide device is tightly attached to the well wall, and the steel wire rope tightly attached to the well wall is gradually guided to the clamping part in the fishing device through rotation. The hollow shaft motor rotates reversely to drive the belt shaft chuck to rotate through the engagement of the ratchet wheel and the pawl, the claw is driven by the belt shaft chuck to clamp the steel wire rope, the fishing tool is lifted, and the broken steel wire rope is fished out.
Claims (6)
1. The utility model provides a spiral guide formula is wire rope fishing device in pit which characterized in that: the salvaging device mainly comprises an upper joint (1), an outer cylinder 1(2), a jaw (3), an inner cylinder 1(4), a chuck with a shaft (5), a pawl support (6), an inner cylinder 2(8), a bearing 1(9), a hollow shaft motor (10), a motor protective shell (11), a guide shoe (12), a spiral guide device (13), a main shaft (14), a bearing 2(15), an outer cylinder 2(16), a ratchet wheel (18), a pawl (19), a bearing 3(22) and a jaw support (24); the upper half part of the upper joint (1) is provided with a cable through hole (25), the upper part of the upper joint is provided with a conical thread which can be connected with a coiled tubing, and the lower part of the upper joint is connected with an inner cylinder 1(4) through a thread; the chuck (5) with the shaft is provided with a through hole along the axial direction, the upper end of the chuck is disc-shaped and is provided with a wire coiling thread, and the lower end of the chuck is a stepped shaft; a groove is formed in the pawl support (6), the upper part of the pawl support is circumferentially fixed on the chuck (5) with the shaft through a flat key, and the pawl support is axially positioned by a round nut 2 (21); the ratchet wheel (18) is circumferentially fixed on the main shaft (14) through a flat key and is axially positioned by a round nut 1(20), and two gear teeth are symmetrically arranged on the ratchet wheel (18) along the diameter and are meshed with the pawl (19); the upper end of the inner cylinder 1(4) is connected with the upper joint (1) through threads, the lower end of the inner cylinder 1(4) is connected with the inner cylinder 2(8) through tapered threads, and a bearing seat hole is axially arranged in the inner part of the inner cylinder; the motor protection shell (11) is divided into an upper part and a lower part, the upper part and the lower part are connected through conical threads, a bolt hole is formed in the lower end of the motor protection shell, and an arc-shaped key groove is formed in the side edge of the motor protection shell; the pawl (19) is arc-shaped, one end of the pawl is provided with a hook, and the other end of the pawl is provided with a through hole and is connected with the pawl support (6) through a bolt (7); the spiral guide device (13) is a spiral steel wire with 6-degree taper.
2. The spiral-guiding type underground wire rope fishing device according to claim 1, wherein the outer cylinder 1(2) is cylindrical, the upper end of the outer cylinder is connected with the upper connector (1) through threads, the lower end of the outer cylinder is connected with the outer cylinder 2(16) through threads, and an annular space formed by the outer cylinder 1(2), the inner cylinder 1(4) and the inner cylinder 2(16) is a cable channel.
3. A spiral guided downhole wireline fishing device according to claim 1, characterised in that the jaw support (24) is connected to the inner barrel 1(4) by means of a bolt (23) and is provided with a slide to constrain the jaw (3) to move in a straight line.
4. A spiral guided fishing device for underground steel wire ropes according to claim 1, characterized in that the main shaft (14) is a hollow stepped shaft, the upper end is provided with a key groove, the middle part is provided with a spline, and the lower end is provided with a thread.
5. The spiral guide type underground steel wire rope fishing device according to claim 1, characterized in that the guide shoe (12) is a conical cavity, the upper end of the guide shoe is connected with the main shaft (15) through threads, and the lower end of the guide shoe is welded with the spiral guide device (13).
6. A spiral guided fishing device for underground wire rope according to claim 1, characterized in that the hollow shaft motor (10) is provided with spline grooves, which are connected with the main shaft (14) through splines and fixed in the motor protective housing (11) through bolts (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010008080.0A CN111075384B (en) | 2020-01-03 | 2020-01-03 | Spiral guide type underground steel wire rope fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010008080.0A CN111075384B (en) | 2020-01-03 | 2020-01-03 | Spiral guide type underground steel wire rope fishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111075384A true CN111075384A (en) | 2020-04-28 |
| CN111075384B CN111075384B (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010008080.0A Active CN111075384B (en) | 2020-01-03 | 2020-01-03 | Spiral guide type underground steel wire rope fishing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075761A (en) * | 2022-06-16 | 2022-09-20 | 中石化石油工程技术服务有限公司 | Special soft stratum broken drill rod fisher for orientation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075761A (en) * | 2022-06-16 | 2022-09-20 | 中石化石油工程技术服务有限公司 | Special soft stratum broken drill rod fisher for orientation |
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| CN111075384B (en) | 2021-08-24 |
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