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双层组合套管内填充液体介质的力学分析

石油钻采工艺

1997年 19卷第5期

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Title

MECHANICS ANALYSIS OF LIQUID MEDIUM FILLED IN DOUBLE-LAYER COMBINED CASING

作者

练章华赵国珍董范曾久长李渊

Authors

Lian zhanghua Zhao Guozhen Dong Fan Zeng Jiuchang Li Yuan

单位

西南石油学院中国石油天然气总公司华北石油管理局

摘要

对双层组合套管内填充液体介质进行了力学分析,导出了该介质压力传递系数的具体表达式。分析了组合套管内壁等效应力随液体体积弹性模量K的变化规律,同时还分析了K=1.7×103MPa时,组合套管内壁等效应力随外压Pw的变化规律,为研究组合套管环空介质及预防套管破坏提供了重要的理论依据。

Abstract

A mechanical analysis on liquid medium filled in double-layer combined casing was conducted. An expressing equation of pressure transfer coefficient of the medium was deduced. The alteratlon law of the equivalent stresses on the inside wall of the combined casing with the elastic module of the volume of the liquid K and with the external pressure Pw when K=7.7×10-3 MPa were also analyzed. Therefore a theoretical basis was created for study on annular medium of the combined casing and the damage prevention of the casing.

关键词：

组合; 套管; 压力系数; 液体; 介质; 数学模型; 计算;

Keywords:

pattern; casing; formation pressure coefficient; liquid; media; mathematical model; calculation;

基金项目

DOI

10.3969/j.issn.1000-7393.1997.05.001