论文详情
水平井伤害的分析与计算
石油钻采工艺
2003年 25卷 第6期
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Title
ANALYSIS AND CALCULATION OF HORIZONTAL WELL DAMAGE
Authors
Liu Xiaoxu
Hu Yongquan
Zhao Jinzhou
Organization
Xi’nan Petroleum Institute
摘要
分析了水平井地层伤害的特点,建立了计算水平井段不同位置处钻井液滤失和污染深度的一套新模型。基于钻井液的浸入特征,模拟压裂液滤失情况,采用卡特模型,根据物质守恒方程可以得到不同井段位置处的钻井液滤失量。采用理论模型计算不同井段位置处的钻井液等效污染深度,然后由体积变换得出不同井段位置处的污染带半径。
Abstract
This paper analyzed the characteristics of horizontal wells damage,and then established a set of method to calculate the drilling fluid lost circulation and pollution depth that vary with the horizontal section.Based on the lost circulation characteristics of drilling fluid and law of conservation of mass,by way of Cart model that applies in the fracture fluid lost,the paper came to a mathematics model of drilling fluid lose that varies with the horizontal section.Applying the theoretical model to calculate the equifinal damage depth which varies with the horizontal section,a formula of pollution depth which varies with the horizontal section through volume transformation was presented.
关键词:
水平井;
地层伤害;
污染半径;
数学模型;
Keywords:
horizontal well;
formation damage;
pollution depth;
mathematics model;
DOI
10.3969/j.issn.1000-7393.2003.06.015