论文详情

裸眼井出砂预测模型的解析分析

石油钻采工艺

2002年 24卷第6期

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Title

ANALYTICAL ANALYSIS OF SAND PRODUCTION MODEL OF OPEN-HOLE COMPLETION WELL

作者

曾流芳刘建军

Authors

Zeng Liufang Liu Jianjun

单位

中国矿业大学北京校区, 北京 100083 武汉工业学院土木系, 湖北武汉 430023

摘要

根据弹性力学的有关知识,分析了考虑油层流体渗流作用时,裸眼井周围的应力分布情况。根据Mohr-Coulomb准则,建立了相应的出砂预测模型,给出油井出砂时临界井底流压的计算方法。分析了储层压力、岩石抗压强度及原地应力状态对出砂的影响。研究结果表明,储层压力、地应力增大,岩石抗压强度变小时,临界井底流压升高,井壁更易出砂。

Abstract

Based on elastic-plastic mechanics and damagedMechanic, considering the effect of fluid flow in strata, the stress distribution around open-hole completion well-bore is analyzed.Using Mohr-Coulomb criteria, the sand production model is founded.The calculating method of the critical fluid pressure of bottom hole is given.Influence of reservoir pressure, compressive strength of rock, production pressure difference, rock strength factor on sand production are also analysed, and the result shows that critical bottomhole pressure and wallbore production sand will take varies according to these parameters change.

关键词：

裸眼完井; 出砂; 预测; 地应力;

Keywords:

open hole completion; sand production; prediction; strata stress;

基金项目

DOI

10.3969/j.issn.1000-7393.2002.06.016