CN201193483Y - 双排切削齿pdc钻头 - Google Patents

双排切削齿pdc钻头 Download PDF

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Publication number
CN201193483Y
CN201193483Y CNU200820018521XU CN200820018521U CN201193483Y CN 201193483 Y CN201193483 Y CN 201193483Y CN U200820018521X U CNU200820018521X U CN U200820018521XU CN 200820018521 U CN200820018521 U CN 200820018521U CN 201193483 Y CN201193483 Y CN 201193483Y
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pdc
cutting teeth
cutters
double
rear row
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Inventor
王福修
邱巍
赵勇
王明瑞
潘信众
王玉功
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Sinopec Oilfield Service Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
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Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau
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Abstract

本实用新型公开了一种双排切削齿PDC钻头,主要由钻头基体、刀翼、前排PDC切削齿、后排PDC切削齿、喷嘴和主排屑槽组成,在刀翼上前排PDC切削齿和后排PDC切削齿之间设置了排屑流道和辅助排屑槽。在钻进过程中后排PDC切削齿切削掉的岩屑能够及时由从喷嘴喷射出的钻井液通过排屑流道和辅助排屑槽排放到井眼环形空间内,因此能够避免后排PDC切削齿泥包现象的发生,从而能够延长钻头使用寿命,增加钻头进尺。

Description

双排切削齿PDC钻头
技术领域
本实用新型涉及一种石油天然气钻井钻头,尤其是一种双排切削齿PDC钻头。
背景技术
为了延长PDC钻头的使用寿命,PDC钻头经常采用双排切削齿结构。但常用的双排切削齿结构PDC钻头在钻进过程中后排切削齿常常会发生泥包现象,使后排切削齿失去切削作用,从而缩短了钻头使用寿命,减少了钻头进尺。
实用新型内容
本实用新型要解决的技术问题是提供一种防止后排切削齿发生泥包的双排切削齿PDC钻头。
为解决上述技术问题,本实用新型的双排切削齿PDC钻头主要由钻头基体、刀翼、前排PDC切削齿、后排PDC切削齿、喷嘴和主排屑槽组成,前排PDC切削齿和后排PDC切削齿都布置在刀翼上,在刀翼上前排PDC切削齿和后排PDC切削齿之间设置了排屑流道和辅助排屑槽。
本实用新型的双排切削齿PDC钻头在刀翼上前排PDC切削齿和后排PDC切削齿之间设置了排屑流道和辅助排屑槽,所以在钻进过程中后排PDC切削齿切削掉的岩屑能够及时排出,因此能够避免后排PDC切削齿泥包现象的发生,从而能够延长钻头使用寿命,增加钻头进尺。
附图说明
下面结合附图和具体实施方式对本实用新型作进一步详细的说明。
图1是本实用新型双排切削齿PDC钻头一种实施方式的结构示意图。
具体实施方式
参照图1的双排切削齿PDC钻头主要由钻头基体1、刀翼2、前排PDC切削齿3、后排PDC切削齿4、喷嘴5和主排屑槽6组成,前排PDC切削齿3和后排PDC切削齿4都布置在刀翼2上,在刀翼2上前排PDC切削齿3和后排PDC切削齿4之间设置了排屑流道7和辅助排屑槽8。
在使用时,首先把图1所示的双排切削齿PDC钻头与其它井下工具连接起来,一同下入井底,然后开泵循环钻井液并加压旋转钻进。由于在刀翼2上前排PDC切削齿3和后排PDC切削齿4之间设置了排屑流道7和辅助排屑槽8,所以在钻进过程中后排PDC切削齿4切削掉的岩屑能够及时由从喷嘴5喷射出的钻井液通过排屑流道7和辅助排屑槽8排放到井眼环形空间内,因此能够避免后排PDC切削齿4发生泥包现象,从而能够延长本实用新型双排切削齿PDC钻头的使用寿命,增加其进尺。

Claims (1)

1.一种双排切削齿PDC钻头,主要由钻头基体(1)、刀翼(2)、前排PDC切削齿(3)、后排PDC切削齿(4)、喷嘴(5)和主排屑槽(6)组成,前排PDC切削齿(3)和后排PDC切削齿(4)都布置在刀翼(2)上,其特征是在刀翼(2)上前排PDC切削齿(3)和后排PDC切削齿(4)之间设置了排屑流道(7)和辅助排屑槽(8)。
CNU200820018521XU 2008-03-04 2008-03-04 双排切削齿pdc钻头 Expired - Lifetime CN201193483Y (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527097A (zh) * 2013-10-12 2014-01-22 中国石油大学(北京) 主动调节型复合钻头
CN104879065A (zh) * 2015-06-15 2015-09-02 泰州市宝锐石油设备制造有限公司 适合含砾地层钻进的pdc钻头
CN110145242A (zh) * 2018-02-11 2019-08-20 中石化石油工程技术服务有限公司 一种带有锥形辅助切削齿pdc钻头
CN112696155A (zh) * 2019-10-22 2021-04-23 西南石油大学 一种具有后排齿水孔的pdc钻头

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527097A (zh) * 2013-10-12 2014-01-22 中国石油大学(北京) 主动调节型复合钻头
CN103527097B (zh) * 2013-10-12 2015-10-28 中国石油大学(北京) 主动调节型复合钻头
CN104879065A (zh) * 2015-06-15 2015-09-02 泰州市宝锐石油设备制造有限公司 适合含砾地层钻进的pdc钻头
CN110145242A (zh) * 2018-02-11 2019-08-20 中石化石油工程技术服务有限公司 一种带有锥形辅助切削齿pdc钻头
CN112696155A (zh) * 2019-10-22 2021-04-23 西南石油大学 一种具有后排齿水孔的pdc钻头

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Patentee after: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC

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