CN217976139U - Well workover is with grinding and dragging integral type instrument - Google Patents
Well workover is with grinding and dragging integral type instrument Download PDFInfo
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- CN217976139U CN217976139U CN202222423477.3U CN202222423477U CN217976139U CN 217976139 U CN217976139 U CN 217976139U CN 202222423477 U CN202222423477 U CN 202222423477U CN 217976139 U CN217976139 U CN 217976139U
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Abstract
The utility model provides a well workover is with grinding and dragging for integral type instrument. Relates to the technical field of oil field downhole tools. The upper joint inner hole is in threaded sealing connection with the central pipe, the lower portion of the central pipe is in threaded sealing connection with the milling head, the outer circle of the upper joint is in sealed connection with the outer pipe through a pin, a piston is arranged between the outer pipe and the central pipe, the lower portion of the piston is connected with a slip through a dovetail groove guide rail expanding downwards, and the slip is located in a strip hole formed in the central pipe. The utility model discloses following beneficial effect has: the tool has the functions of milling and salvaging fallen objects at the same time, the purpose of realizing multiple functions by one-time well descending is met, and the hydraulic driving slips are arranged to hold the fallen fish tightly, so that the salvaging is reliable; the tool saves the time of the drilling tool combination for pulling up and down for many times, and saves manpower and material resources; the tool is a novel milling and expanding fishing tool, has great market application prospect, reliable tool performance, simple and convenient operation, is suitable for various underground operations such as well repair, fishing and the like, and can be widely used in various domestic oil fields.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field instrument technique in the pit and specifically relates to well workover is with grinding and dragging for integral type instrument.
Background art:
the prior milling tool has the following defects: the milling tool goes into the well once, can not satisfy simultaneously and mill the intraductal wall of sleeve, expand mill the mud around the fish and guide the fish to get into the instrument and salvage the junk function, its function is comparatively single, need go into the cover and mill and fishing tool many times, extravagant a large amount of manpower, material resources.
The utility model has the following contents:
in order to solve current milling tool function singleness, the problem that wastes time and energy, the utility model provides a well repair is with dragging for integral type instrument with grinding.
The technical scheme of the utility model is that: well repair is with grinding and draging for integral type instrument, including the top connection, top connection hole thread sealing connects the center tube, center tube lower part thread sealing connects the milling head, the top connection excircle is through pin sealing connects the outer tube, is equipped with the piston between outer tube and the center tube, the slips is connected through the dovetail guide rail of downward expansion in the piston lower part, the slips is located the bar hole of opening on the center tube, is equipped with compression spring between dovetail guide rail bottom and the milling head, it has the feed liquor hole to open above the center tube.
And an overflowing hole is arranged on the central pipe below the liquid inlet hole, and a check valve is arranged on the overflowing hole.
The central pipe is connected with a filter screen through bolts at the lower part of the one-way valve, and the filter screen is covered around the one-way valve.
The inner side surface of the slip is provided with annular one-way teeth.
The utility model discloses following beneficial effect has: the tool has the functions of grinding, milling and fishing fallen objects simultaneously, the purpose of realizing multiple functions by one-time well descending is met, and the hydraulic driving slips are arranged to tightly hold the fallen fish, so that the fishing is reliable; the tool saves the time of the drilling tool combination for pulling up and down for many times, and saves manpower and material resources; the tool is a novel milling and expanding fishing tool, has great market application prospect, reliable tool performance, simple and convenient operation, is suitable for various underground operations such as well repair, fishing and the like, and can be widely used in various domestic oil fields.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged view at a of fig. 1.
In the figure, 1-an upper joint, 2-a central tube, 3-an outer tube, 4-a milling head, 5-a piston, 6-a dovetail groove guide rail, 7-a slip, 8-a strip-shaped hole, 9-a one-way tooth, 10-a liquid inlet hole, 11-an overflowing hole, 12-a one-way valve and 13-a filter screen.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
by figure 1 combine shown in figure 2, the well workover is with grinding and draging for integral type instrument, including top connection 1, 1 hole screw thread sealing connection center tube 2 of top connection, 2 lower part screw thread sealing connection mill heads 4 of center tube, 1 excircle of top connection is through pin sealing connection outer tube 3, be equipped with piston 5 between outer tube 3 and the center tube 2, the slips 7 is connected through the dovetail guide rail 6 of downward expansion to the piston 5 lower part, slips 7 is located the bar hole 8 of opening on the center tube 2, be equipped with compression spring between 6 bottoms of dovetail guide rail and the mill head 4, it has feed liquor hole 10 to open above the center tube 2.
And an overflowing hole 11 is arranged on the central tube 2 below the liquid inlet hole 10, and a one-way valve 12 is arranged on the overflowing hole 11.
The lower part of the one-way valve 12 and the central pipe 2 are connected with a filter screen 13 through bolts, and the filter screen 13 covers the periphery of the one-way valve 12.
The inner side surface of the slip 7 is provided with an annular one-way tooth 9.
When the underground pipe column falls off, the upper connector 1 of the tool is connected with the underground drilling tool assembly, the drilling tool is lowered down, milling operation is carried out, meanwhile, a well is backflushed, flushing liquid jacks a one-way valve 12 and flows out of a well mouth, drill cuttings are intercepted by a filter screen 13 and cannot flow out of the well mouth to cause pollution of the flushing liquid, when fish enters the tool, the backflushing is stopped, the one-way valve 12 is closed to press the inside of the pipe column, liquid pressure pushes a piston 5 to descend, a slip 7 extends inwards under the action of a dovetail groove guide rail to firmly hold the fish, the pressure in the pipe column is maintained, and the whole working process of milling and fishing the fish is finished.
The tool has the functions of grinding, milling and salvaging fallen objects simultaneously, the purpose of realizing multiple functions by one-time well descending is met, and the hydraulic driving slips 7 are arranged to hold the fallen fish tightly, so that the salvaging is reliable; the tool saves the time of the drilling tool combination for pulling up and down for many times, and saves manpower and material resources; the tool is a novel milling and expanding fishing tool, has great market application prospect, reliable tool performance, simple and convenient operation, is suitable for various underground operations such as well repair, fishing and the like, and can be widely used in various domestic oil fields.
Claims (4)
1. The utility model provides a well workover is with dragging for integral type instrument, includes top connection (1), its characterized in that: top connection (1) hole thread sealing connects center tube (2), center tube (2) lower part thread sealing connects milling head (4), top connection (1) excircle is through pin sealing connects outer tube (3), be equipped with piston (5) between outer tube (3) and center tube (2), slips (7) are connected through dovetail guide rail (6) of downward expansion in piston (5) lower part, slips (7) are located bar hole (8) of opening on center tube (2), be equipped with compression spring between dovetail guide rail (6) bottom and milling head (4), open above center tube (2) has feed liquor hole (10).
2. The integrated well-servicing and bailing tool of claim 1, wherein: the central tube (2) is provided with an overflowing hole (11) below the liquid inlet hole (10), and the overflowing hole (11) is provided with a one-way valve (12).
3. The integrated well-servicing and bailing tool of claim 1, wherein: the lower part of the one-way valve (12) is connected with a filter screen (13) through a bolt in the central pipe (2), and the filter screen (13) covers the periphery of the one-way valve (12).
4. The integrated well-servicing and bailing tool of claim 1, wherein: the inner side surface of the slip (7) is provided with an annular one-way tooth (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222423477.3U CN217976139U (en) | 2022-09-14 | 2022-09-14 | Well workover is with grinding and dragging integral type instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222423477.3U CN217976139U (en) | 2022-09-14 | 2022-09-14 | Well workover is with grinding and dragging integral type instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217976139U true CN217976139U (en) | 2022-12-06 |
Family
ID=84263303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222423477.3U Active CN217976139U (en) | 2022-09-14 | 2022-09-14 | Well workover is with grinding and dragging integral type instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217976139U (en) |
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2022
- 2022-09-14 CN CN202222423477.3U patent/CN217976139U/en active Active
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