CN204163632U - A kind of guiding drifting instrument - Google Patents

A kind of guiding drifting instrument Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
guiding
spiral
drifting
cutting
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.)
Active
Application number
CN201420577473.3U
Other languages
Chinese (zh)
Inventor
郝荣明
苏山林
张国伟
任广兵
张鹏
王瑞勤
刘韶
颜民
陈超
谢荣
刘斌
武小强
李瑞民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petrochemical Corp
Huanghe Drilling Co of Sinopec Shengli Petroleum Engineering Corp
Original Assignee
China Petrochemical Corp
Huanghe Drilling Co of Sinopec Shengli Petroleum Engineering Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Petrochemical Corp, Huanghe Drilling Co of Sinopec Shengli Petroleum Engineering Corp filed Critical China Petrochemical Corp
Priority to CN201420577473.3U priority Critical patent/CN204163632U/en
Application granted granted Critical
Publication of CN204163632U publication Critical patent/CN204163632U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Earth Drilling (AREA)

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

A kind of guiding drifting instrument
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.
CN201420577473.3U 2014-10-09 2014-10-09 A kind of guiding drifting instrument Active CN204163632U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN203905815U (en) Double-core reaming bit with multiple stages of reaming bodies
CN204163632U (en) A kind of guiding drifting instrument
CN106869799A (en) One kind is applied to wear-resisting rock stratum hydraulic rotary drill-following reamer
CN203452651U (en) Strong cone PDC (Polycrystalline Diamond Compact) vibration reduction acceleration drill bit
CN107100550A (en) A kind of gradually reducing type efficient rock-breaking taper PDC drill bit
US10954756B2 (en) Core bit designed to control and reduce the cutting forces acting on a core of rock
CN110671055B (en) Design method of PDC drill bit with conical teeth
CN206000471U (en) A kind of preventing sticking PDC drill bit
CN209308635U (en) PDC drill bit with multiple stage crushing function
CN202017455U (en) Compound impregnated bit
CN105422006A (en) Adjustable underground rock breaking tool combining drilling and expanding
CN108625809A (en) A kind of stabilizer for repairing the borehole wall with brill
CN210122902U (en) Soft stratum drifting and reaming tool
CN205206745U (en) PDC drill bit that can broken wall of a well junk
CN203769696U (en) Small rock core sampling drill bit
CN209277815U (en) A kind of soft formation stroke hole reaming tool
CN204754786U (en) Fraising instrument
CN204511309U (en) Carbide drill tooth
CN203452652U (en) PDC (polycrystalline diamond compact) drilling bit
CN202194576U (en) Three-knife wing diamond bit
CN207598190U (en) A kind of lower well straightening drilling tool
CN110607991B (en) Design method of axe-shaped tooth PDC drill bit
CN102337841A (en) Sapphire inner-spiral pulse type spiral-complex comprehensive-drilling bit with mud diversion trench
CN205172426U (en) Hierarchical formula cutting device
CN203655201U (en) Drilling and milling tool for sidetrack well

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant