CN202176265U - Pdc钻头 - Google Patents

Pdc钻头 Download PDF

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Publication number
CN202176265U
CN202176265U CN2011202743763U CN201120274376U CN202176265U CN 202176265 U CN202176265 U CN 202176265U CN 2011202743763 U CN2011202743763 U CN 2011202743763U CN 201120274376 U CN201120274376 U CN 201120274376U CN 202176265 U CN202176265 U CN 202176265U
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China
Prior art keywords
pdc
teeth
drill
wing
cutting teeth
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Expired - Fee Related
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CN2011202743763U
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Inventor
信维刚
黄立
蒋锋雷
刁飞
孔丽丽
郭清生
隋明辉
郭建
田猛
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Shandong Shengyou Oil Drilling & Production Machinery Co Ltd
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Shandong Shengyou Oil Drilling & Production Machinery Co Ltd
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Abstract

本实用新型提供一种PDC钻头,刀翼和钻头胎体为一体,副齿烧结在刀翼上,切削齿焊接在刀翼上的预留齿槽中。副齿的底部为圆柱体,顶部为锥体;优点是既能在软地层中限制主切削齿的吃入深度又不妨碍主切削齿在硬地层的切削能充分起到保护主切削齿的功效,并且有较高的强度。

Description

PDC钻头
技术领域
本实用新型属于石油机械类,尤其是一种石油钻井用钻头。
背景技术
传统PDC钻头的副齿多是斜面和球面的,在实际工作中由于地层的变化或操作的原因产生较大的震动载荷极易造成副齿的断裂失效。失去了对主切削齿的保护,从而使钻头的寿命降低。
实用新型内容
本实用新型的目的在于避免现有技术的不足而提供一种PDC钻头。
本实用新型所采用的技术方案是:PDC钻头,包括PDC钻头胎体、切削齿,副齿,刀翼和钻头胎体为一体,副齿烧结在刀翼上,切削齿焊接在刀翼上的预留齿槽中。副齿的底部为圆柱体,顶部为锥体。
与现有技术相比,本实用新型的优点是:既能在软地层中限制主切削齿的吃入深度又不妨碍主切削齿在硬地层的切削能充分起到保护主切削齿的功效,并且有较高的强度,这一点在软硬交错的地层中表现尤为突出。高强度长寿命是新型切削副齿区别于传统的副齿的主要特征。
附图说明
图1为本实用新型的结构示意图。
图2为本实用新型切削副齿结构示意图。
图中: 1为钻头胎体,2为刀翼,3为切削齿,4为副齿。
具体实施方式
下面结合附图详细叙述本实用新型的实施例。
PDC钻头,包括PDC钻头胎体1、切削齿3,副齿4,刀翼2和钻头胎体1为一体,副齿4烧结在刀翼2上,切削齿3焊接在刀翼2上的预留齿槽中。副齿4的底部为圆柱体,顶部为锥体。
使用效果:使用了该型号副齿4的PDC钻头在不同区块进行了使用,在井深、地层基本相同的条件下,副齿4能充分起到保护主切削齿3,因此新型PDC钻头具备钻砾石夹层的能力,钻进中直接钻穿含砾石夹层的馆陶组地层,减少了起下钻更换钻头时间,较大幅度地提高了钻井速度。
使用情况如下表:
Figure 2011202743763100002DEST_PATH_IMAGE001

Claims (2)

1.PDC钻头,包括PDC钻头胎体、切削齿,副齿,其特征在于刀翼和钻头胎体为一体,副齿烧结在刀翼上,切削齿焊接在刀翼上的预留齿槽中。
2.根据权利要求1所述的PDC钻头,其特征在于是副齿的底部为圆柱体,顶部为锥体。
CN2011202743763U 2011-08-01 2011-08-01 Pdc钻头 Expired - Fee Related CN202176265U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202743763U CN202176265U (zh) 2011-08-01 2011-08-01 Pdc钻头

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202743763U CN202176265U (zh) 2011-08-01 2011-08-01 Pdc钻头

Publications (1)

Publication Number Publication Date
CN202176265U true CN202176265U (zh) 2012-03-28

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CN2011202743763U Expired - Fee Related CN202176265U (zh) 2011-08-01 2011-08-01 Pdc钻头

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696699A (zh) * 2014-01-08 2014-04-02 弘元超硬材料(河南)有限公司 一种脱钴pdc复合片钻头及其制备工艺
CN105189906A (zh) * 2013-03-14 2015-12-23 史密斯国际有限公司 用于固定切削齿钻头和其他井下切削工具的切削构件
US10030452B2 (en) 2013-03-14 2018-07-24 Smith International, Inc. Cutting structures for fixed cutter drill bit and other downhole cutting tools
US10287825B2 (en) 2014-03-11 2019-05-14 Smith International, Inc. Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements
CN110259471A (zh) * 2019-07-23 2019-09-20 中交第三航务工程局有限公司 一种全覆盖地开挖超净硬岩盾构机的滚刀刀圈

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105189906A (zh) * 2013-03-14 2015-12-23 史密斯国际有限公司 用于固定切削齿钻头和其他井下切削工具的切削构件
US10030452B2 (en) 2013-03-14 2018-07-24 Smith International, Inc. Cutting structures for fixed cutter drill bit and other downhole cutting tools
US10309156B2 (en) 2013-03-14 2019-06-04 Smith International, Inc. Cutting structures for fixed cutter drill bit and other downhole cutting tools
CN103696699A (zh) * 2014-01-08 2014-04-02 弘元超硬材料(河南)有限公司 一种脱钴pdc复合片钻头及其制备工艺
US10287825B2 (en) 2014-03-11 2019-05-14 Smith International, Inc. Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements
CN110259471A (zh) * 2019-07-23 2019-09-20 中交第三航务工程局有限公司 一种全覆盖地开挖超净硬岩盾构机的滚刀刀圈

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Granted publication date: 20120328

Termination date: 20120801