论文详情

井眼稳定理论在川东地区的应用

石油钻采工艺

1996年 18卷第5期

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Title

THE APPLICATION OF WELLBORE STABILIZATION THEORY IN THE EAST SICHUAN

作者

雷宗明曾志军王德承晏凌

Authors

Lei Zongming Zeng Zhijun Wang Decheng Yan Ling

单位

重庆石油高等专科学校四川石油管理局川东钻探公司

摘要

从井眼的力学稳定性着手,建立了井眼稳定性分析的力学模型。用川东地区的钻井资料、测井资料以及岩心试验结果,计算分析了大天池构造自流井群地层的平衡压力当量密度,同时还分析了地层倾角和浸泡时间对井壁稳定性的影响、提出了适用于该地区的平衡压力当量密度设计方法。该方法简单,便于现场应用,计算结果与实钻资料吻合,为该地区钻井液密度的正确选取提供了理论依据和设计方法。

Abstract

The paper demonstrates the mechanical model of wellbore stability,analyzes and estimates the equalized pressure equivalent density of the formation in Datianchi structure,in which there is a group of flowing wells,based on drilling and logging data of the area.The paper presents a design method of the equalized pressure equivalent density,through analyzing the influence of dip and soak time on wellbore stability.It will provide a theoretical basis and design method for drilllng fluid density,due to its reliab1e and simple for field use.

关键词：

复杂构造; 井眼稳定; 力学模型; 地层; 倾角; 钻井液浸泡时间; 钻井液密度;

Keywords:

complex structure; wellbore stabilization; mechanical model; formation dip; drilling fluid soak time; drilling fluid density;

基金项目

DOI

10.3969/j.issn.1000-7393.1996.05.007