CN204163632U - A kind of guiding drifting instrument - Google Patents
A kind of guiding drifting instrument Download PDFInfo
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- CN204163632U CN204163632U CN201420577473.3U CN201420577473U CN204163632U CN 204163632 U CN204163632 U CN 204163632U CN 201420577473 U CN201420577473 U CN 201420577473U CN 204163632 U CN204163632 U CN 204163632U
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- guiding
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- drifting
- cutting
- instrument
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Abstract
The utility model provides a kind of guiding drifting instrument, and especially one after bit wear, can expand the instrument of well, avoid the generation of down-hole accident in time.Its technical scheme is: the bossing of body (1) mills out spiral cutting groove, spiral cutting tooth (3) is welded in before cutting slot, spiral gauge teeth (2) is embedded in the alloy hole accomplished fluently in advance, above longitudinally hydrophthalmia (4) is provided with at body (1), guiding milling cone (6) pile-up welding hard alloy, external diameter is less than body (1), and is provided with guiding milling cone tank (5).The utility model maintains the stability of tool work, extends application life.And cutting teeth can destroy keyway or shoulder, and drifting is effective, later stage setting of casing or electrical measurement can be carried out smoothly.
Description
Technical field
The utility model relates to oil, natural gas exploration and development technique field, especially a kind of guiding drifting instrument.
Background technology
In recent years, along with the quickening of the exploration and development process of shale gas and tight sand oil gas, horizontal well and directional well increase year by year, these wells are often with liner completion, need to carry out drifting before lower tail pipe, draw well to expand, abolish shoulder, eliminate borehole wall resistance point, to guarantee sleeve pipe and annex carrying out smoothly down to design well depth or well logging, the main drill bit that adopts carries out drifting at present, because outside diameter is larger, often occur the complex situations of drifting reaming less than shaft bottom, causing can not setting of casing or enter the problems such as difficulty is large under there is sleeve pipe, subsequent job difficulty.Cause certain economic loss.
Summary of the invention
For Problems existing in above-mentioned drifting process, the utility model provides one after bit wear, can to expand the instrument of well in time, avoid the generation of down-hole accident.
Its technical scheme is: the bossing of body mills out spiral cutting groove, spiral cutting tooth is welded in before cutting slot, formation carries out shear action, spiral gauge teeth is embedded in the alloy hole accomplished fluently in advance, make instrument keep external diameter substantially constant when rotary cutting, helicla flute can discharge landwaste in time.Body is longitudinally provided with hydrophthalmia, guiding milling cone pile-up welding hard alloy, external diameter is less than body, and is provided with guiding milling cone tank.
Spiral cutting groove is curve in the shape of a spiral, designs 4 altogether, is distributed on body.
Cutting edge and the lower surface of spiral cutting tooth all stud with carbide alloy, chip increment face paving weldering particle welding rod, thus its cutting function is strengthened greatly, have possessed the ability destroying stratum.
The beneficial effects of the utility model are: in drifting process, and guiding milling cone is due to pile-up welding hard alloy, and external diameter design is less than body, during distance body maximum outside diameter place's certain distance, can broken hard formation, and new eye can not be marked again, play good guide effect.Body inlays gauge and cutting alloy, in instrument rotary course, can cut the borehole wall, keep well rule, hard formation can be made again not destroy body, can play control well track in directional well, thus the stability of retaining tool work, increase the service life.This new tool cutting teeth can destroy keyway or shoulder, and drifting is effective, and later stage setting of casing or electrical measurement can be carried out smoothly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in the figure, a kind of guiding drifting instrument, is formed primarily of body 1, spiral gauge teeth 2, spiral cutting tooth 3, hydrophthalmia 4, guiding milling cone tank 5 and guiding milling cone 6; The bossing of body 1 mills out spiral cutting groove, is welded in before cutting slot by spiral cutting tooth 3, is embedded in by spiral gauge teeth 2 in the alloy hole accomplished fluently in advance, body 1 is longitudinally provided with hydrophthalmia 4,6 pile-up welding hard alloys are bored in guiding milling, and external diameter is less than body 1, and are provided with guiding milling cone tank 5.
In drifting process, mud down pumps into from hydrophthalmia 4, to milling cone, hydrophthalmia place up returns, and bottom-hole cleaning, is up returned by mineshaft annulus, instrument rotates simultaneously, spiral cutting tooth 3 cuts the borehole wall in can rotating again, and meanwhile, spiral gauge teeth 2 can carry out gauge effect in rotary cutting process again, guiding milling cone 6 mainly plays guide effect in rotation, and cuts stratum crushing shoulder.This instrument is through on-the-spot application, and drifting efficiency significantly promotes, and meets the target that drifting is once qualified, improves drifting drilling speed, shortens well construction period.
Claims (3)
1. a guiding drifting instrument, it is characterized in that: the bossing of body (1) mills out spiral cutting groove, spiral cutting tooth (3) is welded in before cutting slot, spiral gauge teeth (2) is embedded in the alloy hole accomplished fluently in advance, above longitudinally hydrophthalmia (4) is provided with at body (1), guiding milling cone (6) pile-up welding hard alloy, external diameter is less than body (1), and is provided with guiding milling cone tank (5).
2. one guiding drifting instrument according to claim 1, is characterized in that: described spiral cutting groove curve in the shape of a spiral, designs 4 altogether, be distributed on body (1).
3. one guiding drifting instrument according to claim 1 and 2, is characterized in that: cutting edge and the lower surface of described spiral cutting tooth (3) all stud with carbide alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577473.3U CN204163632U (en) | 2014-10-09 | 2014-10-09 | A kind of guiding drifting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577473.3U CN204163632U (en) | 2014-10-09 | 2014-10-09 | A kind of guiding drifting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204163632U true CN204163632U (en) | 2015-02-18 |
Family
ID=52537331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420577473.3U Active CN204163632U (en) | 2014-10-09 | 2014-10-09 | A kind of guiding drifting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204163632U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924870A (en) * | 2019-12-26 | 2020-03-27 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Reaming drill bit with cleaning function and using method |
| CN111140201A (en) * | 2020-02-18 | 2020-05-12 | 盐城华亚石油机械制造有限公司 | Special paraffin removal mill shoe for horizontal well screw drilling tool |
| CN111287662A (en) * | 2020-04-05 | 2020-06-16 | 新疆正通石油天然气股份有限公司 | Shale stratum drilling open hole drifting method |
| CN112177563A (en) * | 2019-07-01 | 2021-01-05 | 中国石油化工股份有限公司 | Well completion method |
-
2014
- 2014-10-09 CN CN201420577473.3U patent/CN204163632U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177563A (en) * | 2019-07-01 | 2021-01-05 | 中国石油化工股份有限公司 | Well completion method |
| CN110924870A (en) * | 2019-12-26 | 2020-03-27 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Reaming drill bit with cleaning function and using method |
| CN111140201A (en) * | 2020-02-18 | 2020-05-12 | 盐城华亚石油机械制造有限公司 | Special paraffin removal mill shoe for horizontal well screw drilling tool |
| CN111140201B (en) * | 2020-02-18 | 2022-04-26 | 盐城华亚石油机械制造有限公司 | Special paraffin removal mill shoe for horizontal well screw drilling tool |
| CN111287662A (en) * | 2020-04-05 | 2020-06-16 | 新疆正通石油天然气股份有限公司 | Shale stratum drilling open hole drifting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |