CN105672889A - Anti-collision drill bit for sleeve tube - Google Patents

Anti-collision drill bit for sleeve tube Download PDF

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Publication number
CN105672889A
CN105672889A CN201410667775.4A CN201410667775A CN105672889A CN 105672889 A CN105672889 A CN 105672889A CN 201410667775 A CN201410667775 A CN 201410667775A CN 105672889 A CN105672889 A CN 105672889A
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CN
China
Prior art keywords
diameter
drill bit
teeth
tooth
collision
Prior art date
Application number
CN201410667775.4A
Other languages
Chinese (zh)
Inventor
于建宾
关舒伟
王福修
倪华峰
徐玉超
刘丽杰
彭烨
田京燕
汪为涛
陈曦
王明瑞
张坤
张栋
孙骏
Original Assignee
中石化胜利石油工程有限公司钻井工艺研究院
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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Application filed by 中石化胜利石油工程有限公司钻井工艺研究院 filed Critical 中石化胜利石油工程有限公司钻井工艺研究院
Priority to CN201410667775.4A priority Critical patent/CN105672889A/en
Publication of CN105672889A publication Critical patent/CN105672889A/en

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Abstract

The invention relates to drill bits for petroleum and geology, in particular to an anti-collision drill bit for a sleeve tube. The anti-collision drill bit for the sleeve tube is mainly composed of a drill bit body, a nozzle, a blade and cutting teeth. Based on a PCD drill bit, a diameter-incoming tooth and a diameter-protecting tooth are additionally arranged on the outer side surface of the blade and combined for matching. The large caster angle is arranged on the diameter-incoming tooth. The anti-collision drill bit for the sleeve tube has following beneficial effects: when the PDC drill bit is used for drilling plugs, lateral cutting capability is undermined due to the large caster angle of the diameter-incoming tooth or adoption of an impregnated diamond segment. The diameter-protecting tooth puts a limit on lateral penetration depth of the diameter-incoming tooth and protects a cutting tooth. The sleeve tube is also effectively precluded from being damaged to the PDC drill bit. In addition, tripping time is saved and the drilling period is shortened. The sleeve tube effectively precluded from being damaged to the PDC drill bit.

Description

套管防碰钻头 Anti-collision drill bushing

技术领域 FIELD

[0001] 本发明涉及石油和地质钻头,具体是套管防碰钻头。 [0001] The present invention relates to drill oil and geology, in particular anti-collision drill sleeve.

背景技术 Background technique

[0002]目前在石油和地质钻井过程中,钻塞主要以牙轮钻头为主。 [0002] It geological and petroleum drilling process, the drill bit cone plug mainly based. 但有时为了提速需要,避免牙轮钻头钻塞后起钻换roc钻头增加一趟钻的时间,延长钻井周期。 But sometimes in order to accelerate the need to avoid the roller cone drill bit plug-coming change roc drill drill drill increase trip time, to extend the drilling cycle. 现场经常使用roc钻头钻塞后继续钻进。 Roc drill site often used to continue drilling after drilling plug. 现有的PDC钻头主要由钻头体、喷嘴、刀翼和切削齿组成,钻塞时会造成PDC钻头外侧部的切削齿的损坏,更重要的是roc的切削齿会切削到套管造成套管损坏,为后续的施工埋下隐患。 Conventional PDC bit is mainly composed of a bit body, a nozzle, and a cutting blade wing formed teeth, the cutting teeth will cause damage to the outer portion of the PDC bit drilling plug, more importantly roc cutting teeth will cut into the sleeve causing the sleeve damage, lay hidden for subsequent construction.

发明内容 SUMMARY

[0003] 本发明的目的正是为了为解决使用PDC钻头钻塞时发生的PDC钻头到径齿的损坏,更重要的是PDC的到径齿会切削到套管造成套管损坏的问题,提供一种在使用PDC钻头钻塞时可以有效保护切削齿并且不会损伤套管的套管防碰钻头。 [0003] For purposes of the present invention is to solve occurs when using the PDC drill bit PDC drill plug diameter to damage the teeth, the more important issue to be tooth-diameter cutting into the sleeve casing damage caused by the PDC, provided a plug when using the PDC drill bit can effectively protect the cutting teeth and the sleeve without damaging the anti-collision drill sleeve.

[0004] 本发明的套管防碰钻头主要由钻头体、喷嘴、刀翼和切削齿组成的PDC钻头基础上,在刀翼外侧面上增设到径齿和保径齿,其中到径齿和到径齿托组合搭配。 [0004] PDC drill bit base sleeve of the present invention, collision avoidance by the main bit body, a nozzle, blade and wing consisting of cutting teeth on the outer surface of the wing to the additional tool radius and gauge gear teeth, wherein the teeth and the diameter in combination with the radial tooth holder.

[0005] 上述方案进一步包括: [0005] The embodiment further comprises:

到径齿和到径齿托出露高度相同。 The diameter and the diameter of the teeth exposed tooth torr same height. 到径齿可以是聚晶金刚石复合片或金刚石孕镶块等。 The diameter of the teeth may be diamond or polycrystalline diamond compact impregnated blocks and the like.

[0006] 到径齿和保径齿设置较大的后倾角,后倾角角度在20-70度之间。 [0006] the diameter of the teeth and gage teeth after setting a large angle, the pitch angle between 20-70 degrees.

[0007] 到径齿托包括球形齿、椭圆形齿或平齿的一种或几种组合,平齿的横截面为多边形、圆形或不规则形。 [0007] the diameter of the tooth holder comprises a spherical teeth, a combination of one or more teeth or flat oval teeth, tooth flat cross section is polygonal, circular or irregular shape.

[0008] 本发明的有益效果是:在使用PDC钻头钻塞时由于到径齿设置较大的后倾角或采用金刚石孕镶块等降低了其侧向切削能力,到径齿托限制了到径齿的侧向吃入深度保护切削齿的同时可以更有效防止PDC钻头碰伤套管,避免套管损伤同时节约一趟起下钻时间缩短钻井周期。 [0008] Advantageous effects of the present invention are: the use of PDC drill bit in the plug due to the larger-diameter disposed back rake teeth or the like using a diamond impregnated block its lateral cutting ability is reduced, the diameter of a dental tray to limit the diameter lateral protection of the teeth bite into the depth of the cutting teeth can be more effectively prevented while PDC bit bumps sleeve, to avoid damage to the sleeve while saving trip time by drilling from the drilling cycle.

附图说明 BRIEF DESCRIPTION

[0009] 图1为本发明一种实施例的局部结构示意图。 [0009] FIG 1 A topical schematic structural diagram of the embodiment of the present invention.

[0010] 图中:钻头体1、喷嘴2、刀翼3、切削齿4、到径齿5、到径齿托6和保径齿7。 [0010] FIG: drill body 1, a nozzle 2, wing 3 knives, cutting teeth 4, 5 to the diameter of the teeth, the radial teeth 6 torr and 7 gage teeth.

具体实施方式 Detailed ways

[0011] 下面结合附图对本发明做进一步说明。 [0011] DRAWINGS The present invention is further described.

[0012] 如图1所示,本发明主要由钻头体1、喷嘴2、刀翼3、切削齿4、到径齿5、到径齿托6和保径齿7组成。 [0012] As shown in FIG. 1, the present invention is mainly composed of drill body 1, a nozzle 2, wing 3 knives, cutting teeth 4, 5 to the diameter of the teeth, the radial teeth 6 torr and 7 composed of gage teeth. 切削齿4镶装在刀翼3上。 Tipped cutting teeth 4 in the blade wing 3. 到径齿5可以是聚晶金刚石复合片或金刚石孕镶块等,其形状可以为球形齿或楔形齿。 The diameter of the teeth 5 may be diamond or polycrystalline diamond compact impregnated blocks, etc., which may be a spherical shape or a wedge gear teeth. 到径齿托6布置在到径齿5后侧,与到径齿5等高。 The diameter of a dental tray 6 disposed at the rear side of the path of teeth 5, 5 and the diameter of the tooth contour. 到径齿托6可以为球形齿椭圆形齿或平齿,平齿的横截面可以为多边形或圆形或不规则形。 The diameter gear teeth tray 6 may be spherical or elliptical flat teeth teeth, the teeth flat cross section may be polygonal or circular or irregular shape.

[0013] 到径齿5和保径齿7均设置较大的后倾角,后倾角角度在20-70度之间。 [0013] 5 to the diameter of the teeth and gage teeth 7 are provided after a large angle, the pitch angle between 20-70 degrees. 到径齿托6与到径齿5出露高度相等。 Tooth height equal to the diameter of 6 to 5 torr radial teeth exposed.

[0014] 工作原理: [0014] How it works:

在使用本发明钻塞时由于到径齿5设置较大的后倾角降低了其侧向切削能力,到径齿托6限制到径齿5的侧向吃入深度可以有效防止PDC钻头碰伤套管。 When using the present invention, since the diameter of the drill plug 5 provided a larger tooth angle is reduced after its lateral cutting capability, the diameter of a dental tray 6 to limit the lateral path of the teeth 5 can be effectively prevented depth of bite into bumps PDC bit sets tube.

Claims (4)

1.套管防碰钻头,包括钻头体(I)、喷嘴(2)、刀翼(3)和切削齿(4),其特征在于:在刀翼(3)外侧面上还设置有到径齿(5)、到径齿托(6)和保径齿(7)。 1. Anti-collision drill sleeve comprising a bit body (the I), the nozzle (2), blade wing (3) and cutting teeth (4), wherein: the blade wing (3) is also provided to the outer surface diameter the teeth (5), the diameter of a dental tray (6), and a gage teeth (7).
2.如权利要求1所述的套管防碰钻头,其特征在于:到径齿(5)和到径齿托(6)出露高度相同。 Anti-collision of the drill sleeve as claimed in claim 1, wherein: the diameter of the teeth (5) and to a diameter of a dental tray (6) exposed at the same height.
3.如权利要求1或2所述的套管防碰钻头,其特征在于:到径齿(5)和保径齿(7)设置较大的后倾角,后倾角角度在20-70度之间。 3. The anti-collision sleeve or a drill bit according to claim 1, wherein: the diameter of the teeth (5) and gage teeth (7) is provided after a large angle, the inclination angle of 20-70 degrees between.
4.如权利要求3所述的套管防碰钻头,其特征在于:齿托(6)包括球形齿、椭圆形齿或平齿的一种或几种组合,平齿的横截面为多边形、圆形或不规则形。 4. The drill sleeve anticollision according to claim 3, wherein: a dental tray (6) comprises a combination of one or more teeth of spherical, oval or flat teeth teeth, the teeth of the flat cross section is polygonal, circular or irregular in shape.
CN201410667775.4A 2014-11-21 2014-11-21 Anti-collision drill bit for sleeve tube CN105672889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410667775.4A CN105672889A (en) 2014-11-21 2014-11-21 Anti-collision drill bit for sleeve tube

Publications (1)

Publication Number Publication Date
CN105672889A true CN105672889A (en) 2016-06-15

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558170A (en) * 1992-12-23 1996-09-24 Baroid Technology, Inc. Method and apparatus for improving drill bit stability
CN201705211U (en) * 2009-12-25 2011-01-12 上海中曼金刚石钻头有限公司 Novel PDC drill bit
CN202401970U (en) * 2011-11-01 2012-08-29 上海中盟石油天然气有限公司 PDC (polycrystalline diamond composite) drill bit with function of uplift resistance breaking
US20130292186A1 (en) * 2012-05-03 2013-11-07 Smith International, Inc. Gage cutter protection for drilling bits
CN204326972U (en) * 2014-11-21 2015-05-13 中石化胜利石油工程有限公司钻井工艺研究院 Sleeve pipe anti-collision drill bit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558170A (en) * 1992-12-23 1996-09-24 Baroid Technology, Inc. Method and apparatus for improving drill bit stability
CN201705211U (en) * 2009-12-25 2011-01-12 上海中曼金刚石钻头有限公司 Novel PDC drill bit
CN202401970U (en) * 2011-11-01 2012-08-29 上海中盟石油天然气有限公司 PDC (polycrystalline diamond composite) drill bit with function of uplift resistance breaking
US20130292186A1 (en) * 2012-05-03 2013-11-07 Smith International, Inc. Gage cutter protection for drilling bits
CN204326972U (en) * 2014-11-21 2015-05-13 中石化胜利石油工程有限公司钻井工艺研究院 Sleeve pipe anti-collision drill bit

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