WO2018000781A1 - Foret à diamant intégré à double tranchant - Google Patents

Foret à diamant intégré à double tranchant Download PDF

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Publication number
WO2018000781A1
WO2018000781A1 PCT/CN2016/112815 CN2016112815W WO2018000781A1 WO 2018000781 A1 WO2018000781 A1 WO 2018000781A1 CN 2016112815 W CN2016112815 W CN 2016112815W WO 2018000781 A1 WO2018000781 A1 WO 2018000781A1
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WO
WIPO (PCT)
Prior art keywords
impregnated
double
teeth
type
diamond
Prior art date
Application number
PCT/CN2016/112815
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English (en)
Chinese (zh)
Inventor
冯明
姚建林
陈晓彬
李伟成
李雷
刘彬
Original Assignee
四川川庆石油钻采科技有限公司
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.)
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Publication date
Application filed by 四川川庆石油钻采科技有限公司 filed Critical 四川川庆石油钻采科技有限公司
Publication of WO2018000781A1 publication Critical patent/WO2018000781A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

Definitions

  • a diamond-shaped drill bit with double-cutting structure for drilling belonging to the technical field of drilling equipment such as petroleum natural gas, mining engineering, construction foundation engineering construction, geology and hydrology.
  • the impregnated diamond drill bit uses small-grain diamond as the cutting component. It has the characteristics of high pressure resistance, strong anti-wear ability and good impact resistance. It is suitable for drilling formations that are difficult to drill for PDC and cone bits, and has high hardness. High abrasiveness, etc.
  • the existing design of the diamond-inlaid diamond drill bit uses diamond particles which are finer and have a low volumetric crushing efficiency for the rock formation. Due to the high interface energy between the diamond and the carcass, the wettability and bonding ability between the diamond and the carcass are poor, the bonding strength is low, and the strength of the carcass is insufficient and the premature wear causes the diamond particles to fall off prematurely.
  • the impregnated diamond drill bit with a single cutting structure has a short life span in difficult-to-drill, complex formation diamond inserts, which adversely affects geological exploration.
  • the present invention provides a diamond-impregnated drill bit with a double-cut structure for solving the above-mentioned deficiencies, and solves the problem of a diamond-shaped drill bit with a single cutting structure in the prior art, and has a short life span for difficult drilling and complicated formation diamond impregnation, for geological exploration. Problems that cause adverse effects.
  • a diamond-impregnated drill bit having a double-cut structure comprising an API joint and a bit body connected to the API joint, characterized in that: a central water channel, a plurality of blades, and an adjacent two blades are disposed on the bit body
  • the water channel is provided with a double-cut structure on the upper surface of the blade, a type A1 tooth, a type A tooth, a B-type tooth, a C-type tooth and a double-cut structure A2 type tooth;
  • the structure is impregnated with A1 teeth and double-cutting structure.
  • the cutting surface of the A2 type teeth is inlaid with large particles of natural diamond, and the interior is evenly arranged with small-grain diamonds, and the A-shaped teeth, the impregnated B-shaped teeth and the impregnated Small grain diamond is placed in the C-shaped tooth.
  • a reinforcing gauge is provided on each of the blades.
  • the water channel formed between the blade wing and the reinforcing gauge is a radiant deep water channel
  • the large particle natural diamond is 20-25 mesh
  • the small particle diamond is 25-50 mesh.
  • the blade includes a long blade and a short blade, and at least two sets of long blades are connected at the core of the drill bit, and the long blade is provided with a PDC composite sheet at the joint of the drill bit.
  • At the corresponding end of the API joint at least one short blade is provided with a pregnant C-shaped tooth, a pregnant B-shaped tooth, a double-cut structure, an A1 type tooth, and a pregnant A-type from the end of the short blade.
  • the teeth and double-cutting structure are impregnated with A2 teeth.
  • At the corresponding end of the API joint at least one short blade is provided with a pregnant C-shaped tooth, a double-cut structure, a pregnant A1 tooth, a pregnant A-shaped tooth and a double-cut structure, starting from the end of the short blade.
  • Set with A2 teeth At the corresponding end of the API joint, at least one short blade is provided with a pregnant C-shaped tooth, a double-cut structure, a pregnant A1 tooth, a pregnant A-shaped tooth and a double-cut structure, starting from the end of the short blade.
  • At the corresponding end of the API joint at least one short blade is provided with a pregnant C-shaped tooth, a double-cut structure, a pregnant A1 tooth, a pregnant A-shaped tooth, and a double-cut structure. Inlaid with A1 teeth, impregnated A-shaped teeth and double-cutting structure with A2 teeth.
  • At least one long blade is provided with a PDC composite sheet, a double-cut structure, an A1 type tooth, a pregnant A-shaped tooth, a double-cut structure, an A1 type tooth, and a pregnant A.
  • the tooth and the double-cut structure are set with A2 teeth.
  • At least one long blade is provided with a PDC composite sheet, a pregnant A-shaped tooth, a double-cut structure, a pregnant A1 tooth, a pregnant A-shaped tooth and a double-cut structure.
  • Type teeth are provided.
  • the blade is provided with a discontinuous cloth spacing groove, and the discontinuous cloth spacing groove has a double cutting structure for impregnating the A1 type tooth, the PDC composite piece, the impregnated A type tooth, the pregnant B type tooth, The impregnated C-shaped teeth and the double-cut structure are insulated from the A2 type teeth.
  • the invention has a double-cutting structure, and adopts a large-grained natural diamond and a small-grained diamond as a cutting component, and a large-grain natural diamond as a cutting component can improve the rock crushing efficiency, and the large particle-shaped day of the watch.
  • the small diamonds in the impregnation start to cut the broken rock, which can improve the mechanical drilling speed and the life of the drill bit;
  • the invention adopts a discontinuous intermittent tooth design, and each of the cutting teeth has a gap, which is easy to be removed under high rotation speed, preventing the occurrence of bit burnt due to poor hydraulic effect, and improving the mechanical drill. speed;
  • the invention adopts a multi-shape structure of the mixed tooth tooth design to improve the diamond content of the drill bit and improve the life of the impregnated diamond bit;
  • the PDC cutting tooth structure of the drill core is designed to avoid the occurrence of the core phenomenon of the weak core of the drill bit during the high-speed drilling process, and improve the life of the drill bit;
  • the present invention adopts a central waterway and a radiant deepwater channel design to improve the migration capability of the cuttings at high drilling speeds.
  • Figure 1 is a plan view of the present invention
  • Figure 2 is a perspective view of the present invention
  • Figure 3 is a schematic view of the indented A-shaped tooth of the present invention.
  • Figure 4 is a schematic view of a B-type tooth in the present invention.
  • Figure 5 is a schematic view showing the double-cut structure of the present invention in the A2 type tooth
  • Figure 6 is a schematic view showing the double-cut structure in the present invention.
  • Figure 7 is a schematic view of a C-shaped tooth in the present invention.
  • a diamond-impregnated drill bit having a double-cut structure comprising an API joint 12, a bit body 11 connected to the API joint 12, and a central water channel 2, a plurality of blades 13 and two adjacent blades 13 are disposed on the bit body 11. Between the waterways, in The upper surface of the blade 13 is provided with a double-cut structure impregnated A1 type tooth 1, a pregnant A-shaped tooth 4, a pregnant B-shaped tooth 5, a pregnant C-shaped tooth 6 and a double-cut structure impregnated A2 type tooth 8; The double-cut structure is embedded in the A1 tooth 1, the pregnant A-shaped tooth 4, the pregnant B-shaped tooth 5, the pregnant C-shaped tooth 6 and the double-cut structure impregnated A2 tooth 8 are designed on the blade 13 Double-cutting structure impregnated with A1 type 1 and double-cutting structure.
  • the cutting surface of the A2 type tooth 8 is inlaid with large particles of natural diamond, and the inside is evenly arranged with small-grain diamonds.
  • impregnated B Small particles of diamond are disposed in the tooth 5 and the impregnated C tooth 6.
  • the use of large-grained natural diamonds and impregnated small-grain diamonds as cutting elements, and the use of large-grained natural diamonds as cutting elements can improve the rock crushing efficiency, and the large-grained natural diamonds in the table are peeled off during the cutting process. Small grain diamonds begin to cut broken rock, which can improve the drilling speed and bit life of the drill bit.
  • a diamond-impregnated drill bit having a double-cut structure comprising an API joint 12, a bit body 11 connected to the API joint 12, and a central water channel 2, a plurality of blades 13 and two adjacent blades 13 are disposed on the bit body 11. Between the water channels, the upper surface of the blade 13 is provided with a double-cut structure, the A1 type tooth, the A-shaped tooth 4, the B-type tooth 5, the C-shaped tooth 6 and the double-cut structure.
  • A2 type tooth 8 Inlaid with A2 type tooth 8; mixed design of double-cutting structure impregnated with A1 tooth 1, pregnant A-shaped tooth 4, pregnant B-shaped tooth 5, impregnated C-shaped tooth 6 and double-cut structure impregnated A2 tooth 8
  • the cutting surface of the double-cut structure A1 type tooth 1 and the double-cut structure A2 type tooth 8 are inlaid with large particles of natural diamond, and the inside is evenly arranged with small grain diamonds. Small particles of diamond are disposed in the teeth 4, the impregnated B-shaped teeth 5, and the impregnated C-shaped teeth 6.
  • the use of large-grained natural diamonds and impregnated small-grain diamonds as cutting elements, and the use of large-grained natural diamonds as cutting elements can improve the rock crushing efficiency, and the large-grained natural diamonds in the table are peeled off during the cutting process.
  • Small grain diamonds begin to cut broken rock, which can improve the drilling speed and bit life of the drill bit.
  • the blade 13 includes a long blade 14 and a short blade 15, at least two sets of long blades 14 are connected at the center of the drill bit, and the long blade 14 is provided with a PDC composite sheet 3 at the joint of the bit.
  • At least one short blade 15 is provided with a pregnant C-shaped tooth 6, a pregnant B-shaped tooth 5, and a double-cut structure A1 type tooth.
  • Pregnancy type A tooth 4 and double cutting structure impregnated with A2 type tooth 8; in API joint 12 phase
  • At least one short blade 15 is provided with a pregnant C-shaped tooth 6, a double-cut structure, an A1 tooth, a pregnant A-shaped tooth 4 and a double-cut structure.
  • A2 type tooth 8 at the corresponding end of the API joint 12, starting from the end of the short blade 15, at least one short blade 15 is sequentially provided with a pregnant C-shaped tooth 6, a double-cut structure, a pregnant A1 type tooth 1, and a pregnant setting A-type tooth 4, double-cutting structure impregnated with A1 type teeth 1, impregnated A-type teeth 4 and double-cutting structure impregnated with A2 type teeth 8; at least one long blade 14 is arranged in turn from the joint of the bit center PDC composite sheet 3, double-cut structure, impregnated A1 type tooth 1, pregnant A-type tooth 4, double-cut structure, impregnated A1 type tooth 1, pregnant A-shaped tooth 4, and double-cut structure, impregnated with A2 type tooth 8; At the beginning of the joint of the drill bit, at least one long blade 14 is provided with a PDC composite sheet 3, a pregnant A-shaped tooth 4, a double-cut structure, a pregnant A1 tooth, a pregnant A-shaped tooth 4 and a double-cut structure.
  • a diamond-impregnated drill bit having a double-cut structure comprising an API joint 12, a bit body 11 connected to the API joint 12, and a central water channel 2, a plurality of blades 13 and two adjacent blades 13 are disposed on the bit body 11. Between the water channels, the upper surface of the blade 13 is provided with a double-cut structure, the A1 type tooth, the A-shaped tooth 4, the B-type tooth 5, the C-shaped tooth 6 and the double-cut structure.
  • A2 type tooth 8 Inlaid with A2 type tooth 8; mixed design of double-cutting structure impregnated with A1 tooth 1, pregnant A-shaped tooth 4, pregnant B-shaped tooth 5, impregnated C-shaped tooth 6 and double-cut structure impregnated A2 tooth 8
  • the cutting surface of the double-cut structure A1 type tooth 1 and the double-cut structure A2 type tooth 8 are inlaid with large particles of natural diamond, and the inside is evenly arranged with small grain diamonds. Small particles of diamond are disposed in the teeth 4, the impregnated B-shaped teeth 5, and the impregnated C-shaped teeth 6.
  • the use of large-grained natural diamonds and impregnated small-grain diamonds as cutting elements, and the use of large-grained natural diamonds as cutting elements can improve the rock crushing efficiency, and the large-grained natural diamonds in the table are peeled off during the cutting process.
  • Small grain diamonds begin to cut broken rock, which can improve the drilling speed and bit life of the drill bit.
  • the blade 13 includes a long blade 14 and a short blade 15, at least two sets of long blades 14 are connected at the center of the drill bit, and the long blade 14 is provided with a PDC composite sheet 3 at the joint of the bit.
  • At least one short blade 15 is provided with a pregnant C-shaped tooth 6 , a pregnant B-shaped tooth 5 , a double-cut structure, a pregnant A1 tooth, a pregnant A-shaped tooth 4 and a double cutting structure.
  • the A2 type tooth 8 is impregnated; at the corresponding end of the API joint 12, at least one short blade 15 is provided with a pregnant C-shaped tooth 6 and a double-cut structure A1 type tooth 1 from the end of the short blade 15
  • the A-shaped tooth 4 and the double-cut structure are impregnated with the A2 tooth 8; at the corresponding end of the API joint 12, at least one short blade 15 is provided with a pregnant C-shaped tooth 6 from the end of the short blade 15
  • at least one long blade 14 is provided with a PDC composite sheet 3 in sequence, a double-cut structure, an A1 type tooth, a pregnant A-shaped tooth 4, a double-cut structure, an A1 type tooth, and a pregnant A-shaped tooth 4.
  • the double-cutting structure is impregnated with the A2 type tooth 8; from the joint of the drill bit, at least one long blade 14 is provided with a PDC composite sheet 3, a pregnant A-shaped tooth 4, and a double-cut structure impregnated with the A1 type tooth 1 A tooth-impregnated cutting structure 4 and the double teeth 8 Impregnated type A2.
  • the use of a variety of shape structure of the mixed tooth tooth design improve the diamond content of the drill bit, improve the life of the diamond drill bit, the PDC cutting tooth structure of the drill core, to avoid the phenomenon of the core of the drill bit appearing during the high-speed drilling process, Improve bit life.
  • the blade 13 is provided with a discontinuous cloth spacing groove 7 for the double cutting structure to be inlaid with the A1 type tooth 1, the PDC composite piece 3, the impregnated A type tooth 4, the pregnant B type tooth 5, and the pregnant C type tooth. 6 and the double-cut structure is insulated from the A2 type tooth 8 phase.
  • the discontinuous intermittent tooth design is adopted, and there is a gap between each cutting tooth, which is easy to remove the cuttings at high speed, prevent the occurrence of bit burning due to poor hydraulic effect, and improve the drilling speed.
  • the blade 13 is provided with a reinforcing gauge 10 at one end of the API joint 12, and a water passage formed between the blade 13 and the reinforcing gauge 10 is a radiant s deep channel 9
  • the large-grain natural diamond is 20 to 25 mesh, and the small-grain diamond is 25 to 50 mesh.
  • the size of the PDC composite sheet 3 is ⁇ 13.44*8.0, and may be another size.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention porte sur un foret à diamant intégré ayant une structure à double tranchant. Le foret à diamant intégré comprend un connecteur API (12) et un corps de foret (11) connecté au connecteur API (12). Un canal central (2), une pluralité de lames (13) et un canal d'eau entre deux lames adjacentes (13) sont disposés sur le corps de foret (11). Sur une surface supérieure des lames (13), des dents de type (A1) (1), des dents de type (A) intégrées (4), des dents de type (B) intégrées (5), des dents de type (C) intégrées (6) à une structure à double tranchant et des dents de type (A2) intégrées à une structure à double tranchant sont présentes. Dans les surfaces de coupe de la structure à double tranchant des dents de type (A1) intégrées (1) et de la structure à double tranchant des dents de type (A2) intégrées (8), de grandes particules de diamant naturel sont incorporées et de petites particules de diamant artificiel sont uniformément agencées sur les surfaces internes de celles-ci. De petites particules de diamant sont agencées dans les dents de type (A) intégrées (4), les dents de type (B) intégrées (5) et les dents en forme de (C) intégrées (6). La présente invention résout le problème selon lequel le foret à diamant de la structure à tranchant unique de l'art antérieur possède une courte durée de vie dans des strates compliquées qui sont difficiles à forer et produit des répercussions négatives sur la prospection géologique.
PCT/CN2016/112815 2016-06-28 2016-12-29 Foret à diamant intégré à double tranchant WO2018000781A1 (fr)

Applications Claiming Priority (2)

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CN201610486344.7 2016-06-28
CN201610486344.7A CN105952382A (zh) 2016-06-28 2016-06-28 一种具有双切削结构孕镶金刚石钻头

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WO2018000781A1 true WO2018000781A1 (fr) 2018-01-04

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CN108625790A (zh) * 2018-07-06 2018-10-09 立府精密机械有限公司 一种高强度耐磨钻头
CN109057715A (zh) * 2018-09-26 2018-12-21 西南石油大学 一种切削硬质地层的复合pdc提速钻头
CN109989714A (zh) * 2019-05-05 2019-07-09 中国地质大学（北京） 一种深部硬地层超高转速钻进用钻头
CN116104421A (zh) * 2023-04-04 2023-05-12 成都迪普金刚石钻头有限责任公司 适用于坚硬破碎地层取心的pdc混镶钻头

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CN105952382A (zh) * 2016-06-28 2016-09-21 四川川庆石油钻采科技有限公司 一种具有双切削结构孕镶金刚石钻头
CN107255017A (zh) * 2016-10-18 2017-10-17 西南石油大学 一种表镶天然金刚石颗粒的弧形齿单牙轮钻头
CN110962234B (zh) * 2019-12-27 2021-08-31 河北小蜜蜂工具集团有限公司 一种表、孕镶式金刚石锯片及其制备方法
CN112324344B (zh) * 2020-12-04 2023-04-07 中国石油天然气集团有限公司 一种犁切研磨复合破岩的混合钻头

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163524A (en) * 1991-10-31 1992-11-17 Camco Drilling Group Ltd. Rotary drill bits
CN2451714Y (zh) * 2000-11-16 2001-10-03 江汉石油钻头股份有限公司 一种用于石油勘探钻井的金刚石钻头
EP1174584A2 (fr) * 2000-07-19 2002-01-23 Smith International, Inc. Trépan de forage asymétrique en diamants imprégnés
EP1236861A1 (fr) * 2001-03-02 2002-09-04 Varel International, Inc. Trépan de fraisage et de forage
CN201588553U (zh) * 2010-01-05 2010-09-22 四川川石金刚石钻头有限公司 一种多功能复合钻头
CN202850868U (zh) * 2012-11-07 2013-04-03 北京探矿工程研究所 一种复合式金刚石孕镶全面钻头
CN203463017U (zh) * 2013-07-29 2014-03-05 陈俊勇 一种孕镶金刚石钻头
CN203729884U (zh) * 2014-01-24 2014-07-23 四川万吉金刚石钻头有限公司 弧形齿的孕镶金刚石钻头
CN105952382A (zh) * 2016-06-28 2016-09-21 四川川庆石油钻采科技有限公司 一种具有双切削结构孕镶金刚石钻头

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7624818B2 (en) * 2004-02-19 2009-12-01 Baker Hughes Incorporated Earth boring drill bits with casing component drill out capability and methods of use
CN202017456U (zh) * 2011-05-05 2011-10-26 四川川石金刚石钻头有限公司 一种高速孕镶钻头
CN202017455U (zh) * 2011-05-05 2011-10-26 四川川石金刚石钻头有限公司 一种复合孕镶钻头
CN204024487U (zh) * 2014-08-08 2014-12-17 湖南飞碟新材料有限责任公司 金刚石钻头
CN104499948A (zh) * 2014-10-20 2015-04-08 四川川庆石油钻采科技有限公司 一种双切削金刚石孕镶块

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163524A (en) * 1991-10-31 1992-11-17 Camco Drilling Group Ltd. Rotary drill bits
EP1174584A2 (fr) * 2000-07-19 2002-01-23 Smith International, Inc. Trépan de forage asymétrique en diamants imprégnés
CN2451714Y (zh) * 2000-11-16 2001-10-03 江汉石油钻头股份有限公司 一种用于石油勘探钻井的金刚石钻头
EP1236861A1 (fr) * 2001-03-02 2002-09-04 Varel International, Inc. Trépan de fraisage et de forage
CN201588553U (zh) * 2010-01-05 2010-09-22 四川川石金刚石钻头有限公司 一种多功能复合钻头
CN202850868U (zh) * 2012-11-07 2013-04-03 北京探矿工程研究所 一种复合式金刚石孕镶全面钻头
CN203463017U (zh) * 2013-07-29 2014-03-05 陈俊勇 一种孕镶金刚石钻头
CN203729884U (zh) * 2014-01-24 2014-07-23 四川万吉金刚石钻头有限公司 弧形齿的孕镶金刚石钻头
CN105952382A (zh) * 2016-06-28 2016-09-21 四川川庆石油钻采科技有限公司 一种具有双切削结构孕镶金刚石钻头

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625790A (zh) * 2018-07-06 2018-10-09 立府精密机械有限公司 一种高强度耐磨钻头
CN109057715A (zh) * 2018-09-26 2018-12-21 西南石油大学 一种切削硬质地层的复合pdc提速钻头
CN109989714A (zh) * 2019-05-05 2019-07-09 中国地质大学（北京） 一种深部硬地层超高转速钻进用钻头
CN109989714B (zh) * 2019-05-05 2024-01-23 中国地质大学（北京） 一种深部硬地层超高转速钻进用钻头
CN116104421A (zh) * 2023-04-04 2023-05-12 成都迪普金刚石钻头有限责任公司 适用于坚硬破碎地层取心的pdc混镶钻头

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