论文详情

定向井三向主应力模型及影响因素分析

海洋石油

2014年 34卷第2期

阅读：126

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Title

Model and Influence Factor Analysis of Three Principal Stresses in Directional Well

作者

邱康陈新华褚道余王孝山

Authors

QIU Kang CHEN Xinhua CHU Daoyu WANG Xiaoshan

单位

中国石化集团上海海洋石油局, 上海 200120

Organization

SINOPEC Shanghai Off shore Petroluem Bureau, Shanghai 200120, China

摘要

定向井三向主应力受并眼轨迹、水平地应力方向等因素影响,求解困难,而目前多数井周主应力模型仅针对井壁位置,远离井壁多不适用.此文通过坐标转化方法,建立了定向井三向主应力的求解模型,并且对影响主应力大小的因素进行了研究,研究成果对于定向井井壁稳定、水力压裂等研究有一定的借鉴意义.

Abstract

The principal stress is difficult to be solved in the directional well due to the influence of well trajectory/in-situ stress direction and other factors.The present principal stress models of wellbore are only useful at the well wall,not applicable for the location far away from wall.Through coordinate transformation method,the principal stress model is established and the factors affecting the principal stress are studied.The study results are significant for study of wellbore stability/hydraulic fracturing and other researches.

关键词：

定向井; 主应力; 井斜角; 方位角;

Keywords:

directional well; principal stress; inclination angle; azimuth angle;

基金项目

DOI

https://doi.org/10.3969/j.issn.1008-2336.2014.02.081