CN110259402B - Underground drilling tool end face trimming combination tool and trimming method thereof - Google Patents
Underground drilling tool end face trimming combination tool and trimming method thereof Download PDFInfo
- Publication number
- CN110259402B CN110259402B CN201810202577.9A CN201810202577A CN110259402B CN 110259402 B CN110259402 B CN 110259402B CN 201810202577 A CN201810202577 A CN 201810202577A CN 110259402 B CN110259402 B CN 110259402B
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- drilling tool
- grinding
- trimming
- tool
- shell
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- 238000005553 drilling Methods 0.000 title claims abstract description 62
- 238000009966 trimming Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000000227 grinding Methods 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000012999 compression bending Methods 0.000 abstract description 4
- 241000251468 Actinopterygii Species 0.000 description 5
- 238000005406 washing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000007858 starting material Substances 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
-
- 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
-
- 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
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
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)
- Surgical Instruments (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an underground drilling tool end face trimming combination tool and a trimming method thereof, wherein the underground drilling tool end face trimming combination tool comprises a salvaging drill rod, a screw drilling tool and a grinding shoe which are sequentially connected together in a threaded manner from top to bottom; the screw drilling tool comprises a motor, a shell and a driving screw, wherein the shell is arranged outside the motor, the upper end of the shell is connected with a salvaging drill rod, a centralizing cylinder is arranged at the lower part of the shell of the motor, the upper end of the driving screw is connected with the output end of the motor, and the lower end of the driving screw is connected with a grinding shoe in a threaded manner; the grinding shoes are positioned in the centralizing cylinder, the lower end of the centralizing cylinder is lower than the lower end of the grinding shoes, and the inner wall of the lower port of the centralizing cylinder is a conical surface. The invention can realize the centering and the centering of the falling drilling tool in the well bore, ensure the working surface of the grinding tool to be horizontal and realize the efficient and accurate trimming of the end surface of the falling drilling tool. The problem of uneven end face grinding caused by the compression bending of the drill rod is solved.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to a combined tool for trimming an end face of a downhole drilling tool and a trimming method thereof.
Background
In drilling construction, some large drilling tools fall to the bottom of a well due to fracture, and the falling objects are buried deeply and have long size and cannot be integrally salvaged, and the screw threads at the top of the falling objects are required to be reproduced for butt-joint salvaging. On the premise of reproducing the thread, the top end face of the falling object is flat, so that the finishing process of the tear face must be implemented.
The current common end face finishing method is to connect a drill rod with a sufficient length, connect the lower part of the drill rod with a grinding shoe, rotate the drill rod, and finish the threaded end face by using hard alloy particles welded at the lower end of the grinding shoe. The method is simple to operate and low in cost, but in actual use, the efficiency is very low due to underground complex conditions: firstly, a dropped drilling tool often tilts in a borehole, a grinding shoe cannot be centered, a drill string often loses a stable state in a trimming process, and even the grinding tool cannot be trimmed; secondly, the drill rod is naturally bent after being stressed, the grinding shoes rotate along with the drill rod to lead to the deflection of the grinding surface, and the end surface of the drilling tool which falls off after the grinding is uneven, so that subsequent thread reconstruction cannot be carried out.
Application number: 201520916494.8, publication date 2016-08-17 discloses a starter type special-shaped fish top trimmer comprising a drill joint and a shoe washer; the drilling tool joint is arranged at the upper part of the shoe washing device; the outer side of the bottom of the shoe washing machine is provided with gauge protection cutting teeth; the bottom of the shoe washing machine is provided with a groove along the circumferential direction, and the inner top surface of the groove is provided with trimming teeth; the central portion of the shoe wash extends downwardly to form a central guide centralizer; the bottom of the center guide righting rod is provided with cutting teeth, and the center of the corrector is provided with a flow passage along the vertical direction; the runner penetrates from the top of the shoe washing to the bottom of the central guide righting rod; the center is used for guiding the righting rod to clean the water hole of the drilling tool, the water hole of the drilling tool is used as the center for milling and grinding, the top surface of the fish roof is ground and flattened, the deformed fish roof is milled and ground to a required size, the lower operation is facilitated, the fishing tool is used for fishing, the problem that the fish roof of the fish is caught at the wellhead is fundamentally reduced, and the method can be widely applied to underground fault handling operation in petroleum and natural gas drilling.
The prior art documents disclosed above have a centralizing function, but are completely different from the centralizing principle of the invention, the disclosed documents are centralizing by a central drill, the invention is that after the whole periphery is centralized, the whole top surface is ground, the core of the invention is not only the centralizing function, but also other invention purposes, for example, the problem of uneven end surface grinding caused by the compression bending of a drill rod is eliminated, and the disclosed documents are not solved, so that the disclosed documents are only related technologies in general, and the technical problems and the technical effects to be solved are different from those of the invention in the whole technical scheme, and have no technical teaching.
Disclosure of Invention
The invention aims to provide a combined tool for trimming the end face of a downhole drilling tool and a trimming method thereof, which can realize the centering and centering of the dropped drilling tool in a well hole, ensure the working face of the trimming tool to be horizontal and realize the efficient and accurate trimming of the end face of the dropped drilling tool. The problem of uneven end face grinding caused by the compression bending of the drill rod is solved.
In order to achieve the purpose, the invention adopts the following technical scheme that the underground drilling tool end surface finishing combination tool comprises a salvaging drill rod, a screw drilling tool and a grinding shoe which are sequentially connected together in a threaded manner from top to bottom; the screw drilling tool comprises a motor, a shell and a driving screw, wherein the shell is arranged outside the motor, the upper end of the shell is connected with a salvaging drill rod, a centralizing cylinder is arranged at the lower part of the shell of the motor, the upper end of the driving screw is connected with the output end of the motor, and the lower end of the driving screw is connected with a grinding shoe in a threaded manner; the grinding shoes are positioned in the centralizing cylinder, the lower end of the centralizing cylinder is lower than the lower end of the grinding shoes, and the inner wall of the lower port of the centralizing cylinder is a conical surface.
The inner diameter of the centralizing cylinder is larger than the outer diameter of the grinding shoe.
The screw drilling tool is an API standard screw drilling tool without bending, and the driving screw is driven by drilling fluid.
The grinding shoe is a conventional grinding shoe for drilling with cemented carbide particles welded on the lower end face.
In order to achieve the purpose, the invention adopts the following technical scheme that the trimming method of the underground drilling tool end face trimming combination tool is adopted, and in the salvaging process, the upper end of the drilling tool falls into the centralizing cylinder under the guiding action of the centralizing cylinder until touching the grinding shoe; at the moment, drilling fluid is pumped into the salvaging drill rod, and under the pushing of hydraulic force, the transmission screw of the screw drilling tool rotates to drive the grinding shoe to rotate, and the upper end face of the falling drilling tool is trimmed through the cemented carbide welded on the lower part of the grinding shoe; the whole process of the centering cylinder keeps the centering effect outside the falling drilling tool, the shell of the motor and the centering cylinder do not rotate, and the whole stability of the trimming tool is kept.
Compared with the prior art, the invention has the following beneficial effects:
1. the righting cylinder guides the falling drilling tool to contact the grinding shoes, and the righting cylinder keeps the falling drilling tool and the grinding shoes relatively stable in the grinding process, so that the righting success rate and the grinding efficiency are high.
2. The grinding shoes are driven to rotate by using drilling fluid through the screw drilling tool, and the grinding shoes are driven to rotate instead of the drill rod. The problem of uneven end face grinding caused by the compression bending of the drill rod is solved.
3. The motor part of the screw drilling tool and the centralizing cylinder do not rotate, so that resistance between the motor part and the inner wall of the well hole does not exist, and the trimming difficulty is reduced.
Drawings
FIG. 1 is a schematic diagram of a front view structure of the present invention;
in the drawings, the list of components represented by the various numbers is as follows:
1-salvaging drill rod, 2-motor, 3-driving screw, 4-screw drilling tool, 5-grinding shoe, 6-centralizing cylinder and 7-shell.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention provides a combination tool for trimming an end face of a downhole drilling tool, which comprises a salvaging drill rod 1, a screw drilling tool 4 and a grinding shoe 5 which are sequentially connected together in a threaded manner from top to bottom; the screw drilling tool comprises a motor 2, a shell 7 and a driving screw 3, wherein the shell 7 is arranged outside the motor, the upper end of the shell 7 is connected with a salvaging drill rod, a centralizing cylinder 6 is arranged at the lower part of the shell 7 of the motor, the upper end of the driving screw is connected with the output end of the motor, and the lower end of the driving screw is connected with a grinding shoe in a threaded manner; the grinding shoes are positioned in the centralizing cylinder, the lower end of the centralizing cylinder is lower than the lower end of the grinding shoes, and the inner wall of the lower port of the centralizing cylinder is a conical surface, so that the falling drilling tool can be guided into the centralizing cylinder 6.
The inner diameter of the centralizing cylinder is larger than the outer diameter of the grinding shoe. The relative position of the dropped drill and the grinding shoe 5 is maintained during the grinding process.
The screw drilling tool is an API standard screw drilling tool without bending, and the driving screw is driven by drilling fluid.
The grinding shoe is a conventional grinding shoe for drilling with cemented carbide particles welded on the lower end face.
One specific application of this embodiment is: in the salvaging process, the trimming combination tool is connected into the well in sequence, is lowered to the position of the falling drilling tool, and falls into the inside of the centralizing barrel 6 until touching the grinding shoe 5 under the guiding action of the centralizing barrel 6. The grinding shoe 5 is driven to rotate, and the upper end face of the falling drilling tool is trimmed by cemented carbide welded on the lower part of the grinding shoe 5. The centralizing cylinder 6 keeps centralizing action outside the falling drilling tool in the whole process, the shell 7 of the motor 2 and the centralizing cylinder 6 do not rotate, and the whole stability of the trimming tool is kept.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (2)
1. The end face finishing combined tool of the underground drilling tool comprises a salvaging drill rod, a screw drilling tool and a grinding shoe which are sequentially connected together in a threaded manner from top to bottom; the screw drilling tool is characterized by comprising a motor, a shell and a transmission screw, wherein the shell is arranged outside the motor, the upper end of the shell is connected with a salvaging drill rod, a centralizing cylinder is arranged at the lower part of the shell of the motor, the upper end of the transmission screw is connected with the output end of the motor, and the lower end of the transmission screw is connected with a grinding shoe in a threaded manner; the grinding shoes are positioned in the righting cylinder, the lower end of the righting cylinder is lower than the lower end of the grinding shoes, and the inner wall of the lower port of the righting cylinder is a conical surface;
the inner diameter of the centralizing cylinder is larger than the outer diameter of the grinding shoe;
the screw drilling tool is an API standard screw drilling tool without bending, and the drilling fluid drives the transmission screw;
the grinding shoe is a conventional grinding shoe for drilling with cemented carbide particles welded on the lower end face.
2. The method for trimming the end face trimming combination tool of the underground drilling tool according to claim 1, wherein in the salvaging process, the upper end of the drilling tool falls into the centralizing cylinder under the guiding action of the centralizing cylinder until touching the grinding shoe; driving the grinding shoe to rotate, and trimming the upper end surface of the falling drilling tool through cemented carbide welded on the lower part of the grinding shoe; the whole process of the centering cylinder keeps the centering effect outside the falling drilling tool, the shell of the motor and the centering cylinder do not rotate, and the whole stability of the trimming tool is kept.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810202577.9A CN110259402B (en) | 2018-03-12 | 2018-03-12 | Underground drilling tool end face trimming combination tool and trimming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810202577.9A CN110259402B (en) | 2018-03-12 | 2018-03-12 | Underground drilling tool end face trimming combination tool and trimming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110259402A CN110259402A (en) | 2019-09-20 |
| CN110259402B true CN110259402B (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810202577.9A Active CN110259402B (en) | 2018-03-12 | 2018-03-12 | Underground drilling tool end face trimming combination tool and trimming method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110259402B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200949436Y (en) * | 2006-09-02 | 2007-09-19 | 辽河石油勘探局 | Salvaging cup type grind shoe |
| CN201908599U (en) * | 2010-12-23 | 2011-07-27 | 中国石油集团渤海钻探工程有限公司 | Fishing tool for multifunctional spiral drilling rig |
| CN104632115A (en) * | 2015-01-30 | 2015-05-20 | 中石化石油工程技术服务有限公司 | Composite milling shoe for tubular fish |
| CN205477482U (en) * | 2015-11-17 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Introduction formula dysmorphism top of fish trimmer |
| CN208010305U (en) * | 2018-03-12 | 2018-10-26 | 中石化石油工程技术服务有限公司 | A kind of down-hole equipment end face finishing combination tool |
-
2018
- 2018-03-12 CN CN201810202577.9A patent/CN110259402B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200949436Y (en) * | 2006-09-02 | 2007-09-19 | 辽河石油勘探局 | Salvaging cup type grind shoe |
| CN201908599U (en) * | 2010-12-23 | 2011-07-27 | 中国石油集团渤海钻探工程有限公司 | Fishing tool for multifunctional spiral drilling rig |
| CN104632115A (en) * | 2015-01-30 | 2015-05-20 | 中石化石油工程技术服务有限公司 | Composite milling shoe for tubular fish |
| CN205477482U (en) * | 2015-11-17 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Introduction formula dysmorphism top of fish trimmer |
| CN208010305U (en) * | 2018-03-12 | 2018-10-26 | 中石化石油工程技术服务有限公司 | A kind of down-hole equipment end face finishing combination tool |
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| Publication number | Publication date |
|---|---|
| CN110259402A (en) | 2019-09-20 |
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