CN101975026A - PDC (Polycrystalline Diamond Compact) drill - Google Patents

PDC (Polycrystalline Diamond Compact) drill Download PDF

Info

Publication number
CN101975026A
CN101975026A CN 201010509559 CN201010509559A CN101975026A CN 101975026 A CN101975026 A CN 101975026A CN 201010509559 CN201010509559 CN 201010509559 CN 201010509559 A CN201010509559 A CN 201010509559A CN 101975026 A CN101975026 A CN 101975026A
Authority
CN
Grant status
Application
Patent type
Prior art keywords
pdc
drill
wear
diamond
end
Prior art date
Application number
CN 201010509559
Other languages
Chinese (zh)
Inventor
韩桂云
Original Assignee
韩桂云
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

Links

Abstract

The invention provides a PDC (Polycrystalline Diamond Compact) drill which comprises a drill base body, a wear-resistant coating and a PDC, wherein the drill base body is provided with a mounting end and a drilling-in end; the wear-resistant coating is arranged on the surface of the drilling-in end and provided with a flaky rotary wing protruding out of the drill base body; the thickness of the wear-resistant coating is 0.2-5mm and consists of diamond and wear-resistant alloy; and the PDC is fixed on the flaky rotary wing. Compared with the prior art, the invention improves the strength and the wear-resistant property of the drill, prolongs the service life of the drill and also reduces the integral production cost of the drill.

Description

PDC钻头 PDC drill bits

【技术领域】 TECHNICAL FIELD

[0001] 本发明涉及一种PDC钻头,尤其涉及一种表面涂覆有高浓度金刚石涂层的石油开采用钻头。 [0001] The present invention relates to a PDC bit, in particular, relates to a surface coated with a high concentration of oil using a diamond coating drill opening.

【背景技术】 【Background technique】

[0002] PDC钻头是当今油气田专用替代老式牙轮钻的钻井钻头,其具有高耐磨性、高冲击性、防斜、防泥包、高转速等特点,并被誉为高技术、高投入、高产出的“三高”产品。 [0002] PDC bit today's oil and gas fields is dedicated replacing the older roller cone drilling bit, which has a high wear resistance, high impact resistance, anti-diagonal, anti-balling, high speed, etc., and known as the high-tech, high investment , high-yield "three high" products. 在钻井过程中,PDC钻头具有高钻速、低钻压、高进尺等高性能优势,其在钻井过程的应用,可大大降低油田的开采成本,加快开采速度,提高油田的经济效益。 During drilling, the PDC drill bit having a high-speed, low WOB, high-performance footage and other advantages, its application in the drilling process, can greatly reduce the cost of mining fields to accelerate production rates, improving economic efficiency of the oil. PDC钻头质量是保证PDC钻头使用的根本,而PDC钻头质量与钻头自身的结构、材质和制作工艺有非常重要的关系,现有的很多PDC钻头因其自身的材质和结构等因素,大多只能用于软页岩地层中,原因是硬的夹层会损坏钻头,使得PDC钻头的应用受到了阻碍。 PDC drill bit is to ensure that the fundamental quality PDC bits used, and PDC drill bit itself with the quality of structure, material and production process has a very important relationship, many existing factors PDC bits for its own materials and structure, most of them only for soft shale formations, because it will damage the drill bit hard mezzanine, so that the application has been hampered PDC bits.

[0003] 鉴于上述问题,有必要提供一种新型的PDC钻头来解决上述不足。 [0003] In view of the above problems, it is necessary to provide a new type of PDC bit to solve the above problems.

【发明内容】 [SUMMARY]

[0004] 本发明所解决的技术问题在于提供一种PDC钻头,其可有效提高钻头的强度和耐磨性能,延长使用寿命。 [0004] The technical problem solved by the present invention is to provide a PDC bit, which can effectively improve the strength and wear resistance of the drill bit, extend the service life.

[0005] 为解决上述技术问题,本发明采用如下技术方案:一种PDC钻头,包括钻头基体、 耐磨涂层及金刚石复合片,所述钻头基体设有一安装端及一钻入端,所述耐磨涂层设于所述钻入端的表面并设有凸伸出钻头基体的若干片状旋转翼,该耐磨涂层的厚度为0. 2mm至5mm并由金刚石和耐磨合金组成,所述金刚石复合片固定所述片状旋转翼上。 [0005] To solve the above problems, the present invention adopts the following technical solutions: A PDC drill bit comprising a substrate, a wear resistant coating and PDC, the bit body is provided with a base end and a drilled end of the installation, the abrasion resistant coating provided on an end surface of the drill and a plurality of projections projecting sheet-like swing of the bit matrix, the thickness of the wear resistant coating is of diamond by 0. 2mm to 5mm and a wear-resistant alloy composition, the PDC said upper sheet is fixed to the rotor.

[0006] 进一步地,所述钻入端尺寸大于所述安装端,所述耐磨合金包含钴基、镍基、铬基、 铁基以及由它们组成的高温合金。 [0006] Further, the drill end of a size larger than the mounting end of the wear resistant alloy comprising cobalt-based, nickel-based, chromium-based, and iron-based superalloy is composed of them.

[0007] 进一步地,所述旋转翼设有顶表面,所述金刚石复合片排列于所述顶表面上。 [0007] Further, the rotor is provided with a top surface of the diamond composite sheet arranged on the top surface.

[0008] 进一步地,所述金刚石的体积浓度10-90%,金刚石的粒度为1微米至2000微米。 [0008] Further, the volume concentration of 10-90% diamond, diamond particle size of 1 micron to 2000 microns.

[0009] 相较于现有技术,本发明所述的PDC钻头的有益效果是:提高了钻头的强度和耐磨性能,延长了钻头的使用寿命,也降低了钻头的整体生产成本。 [0009] Compared to the prior art, the PDC drill bit according to the present invention, beneficial effects: increased strength and wear resistance of the drill bit, extend the life of the drill bit and also reduces the overall production costs of the drill bit.

【附图说明】 BRIEF DESCRIPTION

[0010] 图1为本发明所述PDC钻头的立体图。 [0010] Fig 1 a perspective view of the PDC drill bit of the present invention. 【具体实施方式】 【detailed description】

[0011] 如图1所示,本发明提供一种PDC钻头100,其包括钻头基体10、耐磨涂层20及金刚石复合片30。 [0011] As shown in FIG 1, the present invention provides a PDC drill bit 100, which includes a shank 10, a wear resistant coating 20 and the PDC 30.

[0012] 所述钻头基体10大体呈圆柱形,并设有一安装端11及一钻入端12,所述安装端11与一旋转电机(未图示)连接,使得钻头100可随电机带动而旋转起来,所述钻入端12尺寸略大于所述安装端11。 [0012] The bit generally cylindrical base body 10, and is provided with a mounting end 11 and a drill end 12, the mounting end 11 of a rotary motor (not shown), so that the drill bit 100 can be driven with the motor and spin, the end of the drill 12 is slightly larger than the mounting end 11.

[0013] 所述耐磨涂层20涂覆于所述钻入端12表面,并由金刚石和耐磨合金组成,该耐磨涂层20的厚度为0. 2-5mm,硬度为HRC40-85,所述金刚石的体积浓度10-90%,金刚石的粒度1-2000微米之间,且耐磨涂层20可以是单层,也可以是多层,还可根据金刚石浓度的变化,设计成梯度的涂层。 [0013] The wear-resistant coating 20 is coated on the surface of the drill end 12, and by diamond wear-resistant alloy composition, the thickness of the wear resistant coating 20 is 0. 2-5mm, hardness HRC40-85 , volume concentration of 10-90% of the diamond, the diamond particle size of between 1-2000 microns and an abrasion resistant coating 20 may be a single layer or a multilayer, it can also be based in the diamond concentration gradient designed to coating. 所述耐磨合金包含钴基、镍基、铬基、铁基以及由它们组成的高温合金。 The wear resistant alloy comprising cobalt-based, nickel-based, chromium-based, and iron-based superalloy is composed of them. 所述耐磨涂层20还设有若干凸伸出钻头基体10表面的片状旋转翼21。 The wear resistant coating 20 is also provided with a plurality of sheet-shaped rotor 10 projects out of the base surface of the drill bit 21.

[0014] 所述金刚石复合片30设于所述片状旋转翼21上,并沿着旋转翼21的顶表面排列设置,用于在旋转时直接作用于地质层上,金刚石复合片30的设置增加了PDC钻头100的强度和硬度。 [0014] The diamond composite sheet 30 provided on the sheet-shaped rotor 21, and are arranged along the top surface of the rotor 21, for directly acting on the geological formations when rotated, PDC 30 is provided It increases the strength and hardness of PDC drill bit 100.

[0015] 所述PDC钻头100上的耐磨涂层20是利用金刚石涂覆设备涂覆于钻头基体10上, 所述金刚石涂覆设备包括真空加热炉、保护气氛加热炉及连续式履带传动加热炉。 [0015] The PDC drill bit 100 wear resistant coating on the coating apparatus 20 is a diamond-coated substrate on the drill bit 10, the diamond coating apparatus comprises a vacuum heating furnace, and the furnace atmosphere was heated continuous crawler track furnace.

[0016] 以下主要介绍本发明所述的PDC钻头100的耐磨涂层20涂覆工艺: [0016] The following describes the present invention the abrasion-resistant coating 20 of the PDC drill bit 100 coating process:

[0017] 首先,把金刚石、活性合金及有机结合剂做成膏状直接涂覆在钻头基体10的表面,然后进行活化烧结。 [0017] First, the diamond, alloy and organic binding agent active paste applied directly to the drill bit to make the surface of the base body 10, and then activated sintering.

[0018] 接着,再用冷喷涂的方法将金刚石、活性合金喷涂在钻头基体10表面,然后进行活化烧结。 [0018] Next, a cold spray method and then the diamond, the surface activity of the alloy coating shank 10, and then activated sintering.

[0019] 然后,用金刚石焊条直接在旋转翼21的顶表面进行施焊,然后进行活化烧结。 [0019] Then, a diamond electrode directly on the top surface 21 of the rotor welding, and then activated sintering.

[0020] 耐磨涂层20与钻头基体10之间形成金属键和,确保耐磨涂层20在恶劣的工况下,与钻头基体10不脱层;在本发明所述的工艺条件下的金刚石自身不碳化,也不降低强度,确保了耐磨涂层20的超高耐磨性能,提高了PDC钻头的使用寿命,而本发明的钢体PDC 钻头100比较传统的胎体PDC钻头还可节省20-30%的生产成本,也大大缩短了PDC钻头的生产周期。 [0020] The abrasion resistant coating 20 formed between the shank body 10 and a metal bond, an abrasion resistant coating 20 to ensure that under severe conditions, with the shank 10 not delaminate; under the process conditions of the present invention. diamond itself is not carbonized, the strength is not lowered, to ensure the abrasion resistant coating 20 of the ultra-high wear resistance, to improve the life of the PDC bit, the conventional PDC drill bit 100 Comparative steel body PDC bits carcass of the present invention may also save 20-30% of the production costs, but also greatly shortened the PDC drill bit production cycle.

[0021] 以上所述,仅是本发明的最佳实施例而已,并非对本发明作任何形式上的限制。 [0021] In the above, only the preferred embodiment of the present invention, but not be limited to any form of the present invention. 任何熟悉本领域的技术人员,在不脱离本发明技术方案范围情况下,利用上述揭示的方法内容对本发明技术方案做出许多可能的变动和修饰,均属于权利要求书保护的范围。 Any scope of those skilled in the art, without departing from the scope of the technical solution of the present invention, the contents disclosed by the above method may make many variations and modifications of the technical solution of the present invention are the protection of the claims.

Claims (4)

  1. 一种PDC钻头,包括钻头基体、耐磨涂层及金刚石复合片,所述钻头基体设有一安装端及一钻入端,其特征在于:所述耐磨涂层设于所述钻入端的表面并设有凸伸出钻头基体的若干片状旋转翼,该耐磨涂层的厚度为0.2mm至5mm并由金刚石和耐磨合金组成,所述金刚石复合片固定所述片状旋转翼上。 One kind of PDC bit, includes a bit matrix, and the wear-resistant coating PDC, the bit body is provided with a base end and a drilled end of the installation, characterized in that: said coating is provided on an end surface of the drill wear and a plurality of projections projecting sheet-bit rotor base body, the thickness of the wear resistant coating is 0.2mm to 5mm and by diamond wear-resistant alloy composition, the diamond compact to the sheet to fix the rotor.
  2. 2.根据权利要求1所述的PDC钻头,其特征在于:所述钻入端尺寸大于所述安装端,所述耐磨合金包含钴基、镍基、铬基、铁基以及由它们组成的高温合金。 PDC drill bit according to claim 1, wherein: the drill end of a size greater than the mounting end, said wear-resistant alloy comprising cobalt-based, nickel-based, chromium-based, iron-based and composed by them Superalloy.
  3. 3.根据权利要求2所述的PDC钻头,其特征在于:所述旋转翼设有顶表面,所述金刚石复合片排列于所述顶表面上。 PDC drill bit according to claim 2, wherein: said rotor is provided with a top surface of the diamond composite sheet arranged on the top surface.
  4. 4.根据权利要求3所述的PDC钻头,其特征在于:所述金刚石的体积浓度10-90%,金刚石的粒度为1微米至2000微米。 PDC drill bit according to claim 3, wherein: the volume concentration of 10-90% of the diamond, the diamond particle size 1 micron to 2000 microns.
CN 201010509559 2010-10-18 2010-10-18 PDC (Polycrystalline Diamond Compact) drill CN101975026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010509559 CN101975026A (en) 2010-10-18 2010-10-18 PDC (Polycrystalline Diamond Compact) drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010509559 CN101975026A (en) 2010-10-18 2010-10-18 PDC (Polycrystalline Diamond Compact) drill

Publications (1)

Publication Number Publication Date
CN101975026A true true CN101975026A (en) 2011-02-16

Family

ID=43574931

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010509559 CN101975026A (en) 2010-10-18 2010-10-18 PDC (Polycrystalline Diamond Compact) drill

Country Status (1)

Country Link
CN (1) CN101975026A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104060943A (en) * 2014-04-11 2014-09-24 江苏长城石油装备制造有限公司 Drill bit for screw drill tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1057086A (en) * 1990-06-07 1991-12-18 中国地质大学(武汉)长江电镀金刚石钻头研制公司 Integral diamond drill rod
US20070079992A1 (en) * 2005-10-11 2007-04-12 Baker Hughes Incorporated System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials
US20070102199A1 (en) * 2005-11-10 2007-05-10 Smith Redd H Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
CN101016826A (en) * 2007-03-08 2007-08-15 江汉石油钻头股份有限公司 Bit body of diamond bit and manufacture method therefor
CN201521248U (en) * 2009-08-28 2010-07-07 桂林矿产地质研究院 Impregnated diamond bit with protective steel body
US20100193254A1 (en) * 2009-01-30 2010-08-05 Halliburton Energy Services, Inc. Matrix Drill Bit with Dual Surface Compositions and Methods of Manufacture
CN101812985A (en) * 2010-04-23 2010-08-25 宋建华 Shearer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1057086A (en) * 1990-06-07 1991-12-18 中国地质大学(武汉)长江电镀金刚石钻头研制公司 Integral diamond drill rod
US20070079992A1 (en) * 2005-10-11 2007-04-12 Baker Hughes Incorporated System, method, and apparatus for enhancing the durability of earth-boring bits with carbide materials
US20070102199A1 (en) * 2005-11-10 2007-05-10 Smith Redd H Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
CN101016826A (en) * 2007-03-08 2007-08-15 江汉石油钻头股份有限公司 Bit body of diamond bit and manufacture method therefor
US20100193254A1 (en) * 2009-01-30 2010-08-05 Halliburton Energy Services, Inc. Matrix Drill Bit with Dual Surface Compositions and Methods of Manufacture
CN201521248U (en) * 2009-08-28 2010-07-07 桂林矿产地质研究院 Impregnated diamond bit with protective steel body
CN101812985A (en) * 2010-04-23 2010-08-25 宋建华 Shearer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104060943A (en) * 2014-04-11 2014-09-24 江苏长城石油装备制造有限公司 Drill bit for screw drill tool

Similar Documents

Publication Publication Date Title
US20050109545A1 (en) Barrier Coated Granules for Imporve Hardfacing Material
CN201202408Y (en) Polycrystalline diamond hard alloy composite sheet grooving on surface
CN102653855A (en) Preparation method of abrasion-resistant and oxidation-resisting TiAlSiN nanometer composite superhard coating
CN102128008A (en) Polycrystalline diamond-hard alloy composite rock breaking button down-the-hole bit and manufacturing process thereof
CN102773434A (en) Nanocomposite electroplating layer copper plate of continuous casting crystallizer and preparation process of nanocomposite electroplating layer copper plate
CN103072332A (en) Polycrystalline diamond compact and preparation method thereof
US20090260482A1 (en) Materials for enhancing the durability of earth-boring bits, and methods of forming such materials
CN102337534A (en) Technology of extending service life of packer with wear resistant metal spray welding cladding layer
CN202673149U (en) Mixed bit
CN101476445A (en) CVD diamond layer overlapped diamond composite sheet for drilling and its production method
CN101722378A (en) Self-protected flux-cored wire
CN102700191A (en) Method for manufacturing polycrystalline diamond compact enhanced by chemical vapor deposition (CVD) diamond
CN201377323Y (en) Improved pick-shaped cutter
CN102434105A (en) Composite bit with rotary cut rock-breaking function
CN104047548A (en) Diamond drill tooth with cobalt content gradient
CN201959832U (en) Composite wear-resistant hammer head with substrate made of high-manganese/ultrahigh-manganese-series steel
CN101348929A (en) Method for modifying metallic material local surface
CN204024480U (en) Ploughing type PDC bit suitable for hard stratum
CN101935817A (en) Life-prolonging technique for antifriction metal spray welding deposited layer of tamping pick
CN102242338A (en) Composite coated cutting tool containing periodic coating and preparation method thereof
CN201078233Y (en) Combined hard metal mine coal cutter bit
CN201236705Y (en) Hob cutter type coal mining machine tumbling cylinder
CN2846705Y (en) Composite diamend layer cutting teeth
CN201314198Y (en) Polycrystalline diamond composite sheet
CN201932643U (en) Wear-resistant middle plate of scraper conveyor

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C12 Rejection of a patent application after its publication