A study on safe and dangerous drilling azimuths of horizontal well

doi:10.7623/syxb201301021

Editorial office of ACTA PETROLEI SINICA ›› 2013, Vol. 34 ›› Issue (1): 164-168.DOI: 10.7623/syxb201301021

• Petroleum Engineering • Previous Articles Next Articles

A study on safe and dangerous drilling azimuths of horizontal well

CHEN Zhaowei 1,2 　ZHANG Hui 2 　SHEN Biao 2　 YIN Guoqing 2　WANG Xiaofeng 2

Received:2012-07-30 Revised:2012-10-12 Online:2013-01-25 Published:2013-04-09

水平井安全和危险钻井方位

陈朝伟 1,2　张　辉 2 　申　彪 2 　尹国庆 2　王晓丰 2

1．中国石油集团钻井工程技术研究院北京 100195; 2．中国石油塔里木油田公司新疆库尔勒 841000

通讯作者: 陈朝伟
作者简介:陈朝伟，男，1979年7月生，2007年获北京大学固体地球物理学专业博士学位，现为中国石油集团钻井工程技术研究院高级工程师，主要从事石油工程岩石力学研究。
基金资助:
国家重大科技专项“钻井工程设计和工艺软件”（2011ZX05021-006）资助。

Abstract

Abstract:

According to the Mohr-Coulomb criterion, we established a governing equation of wellbore stability for horizontal well based on borehole-wall stress equations of horizontal well. And a method to determine safe and dangerous drilling azimuths for horizontal well was proposed, with which safe and dangerous drilling azimuths for horizontal well can be determined under any stress conditions. The result of algorithmic studies showed that the in-site stress regime determines safe and dangerous drilling azimuths of horizontal well. Therefore, the study result can provide a theoretical basis for the optimization design of wellbore trajectory.

Key words: horizontal well, wellbore stability, safe drilling azimuth, dangerous drilling azimuth, Mohr-Coulomb criterion

摘要：

在理论推导水平井井壁应力公式基础上，根据Mohr-Coulomb准则，建立了水平井井壁稳定控制方程，提出了水平井井壁安全和危险方位的确定方法。利用该方法，能够确定任意应力条件下水平井的安全和危险方位。算例研究表明，应力模式决定着水平井的安全和危险方位，研究结果能够为井眼轨迹优化设计提供理论依据。

关键词: 水平井, 井壁稳定, 安全钻井方位, 危险钻井方位, Mohr-Coulomb准则

CHEN Zhaowei　ZHANG Hui　SHEN Biao　YIN Guoqing　WANG Xiaofeng . A study on safe and dangerous drilling azimuths of horizontal well[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(1): 164-168.

陈朝伟　张　辉　申　彪　尹国庆　王晓丰 . 水平井安全和危险钻井方位[J]. 石油学报, 2013, 34(1): 164-168.

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A study on safe and dangerous drilling azimuths of horizontal well

水平井安全和危险钻井方位

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