三维感应测井仪器在三维井眼环境中的正演模拟  

Forward modeling of 3D induction logging tool in 3D borehole environment

作　　者：张国艳 肖加奇 肖占山 洪德成[2] 王林 

机构地区：[1]中国石油集团长城钻探工程有限公司,北京100176 [2]吉林大学物理学院,吉林长春130012

出　　处：《中国石油大学学报（自然科学版）》2013年第3期63-67,82,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家'十二五'重大专项(2011ZX05020-004)

摘　　要：分析三维感应测井仪器三线圈系视电导率受层边界、井眼钻井液、侵入和仪器偏心等因素的影响。结果表明:井眼对XX/YY方向视电导率的影响比ZZ方向显著;侵入对XX/YY/ZZ方向视电导率都有影响,且XX/YY方向视电导率偏移方向与ZZ方向视电导率偏移方向相反;井眼和侵入对XZ/ZX分量影响主要表现在边界附近;偏心对ZZ方向视电导率几乎没影响,但当测井仪器偏心在X方向时,YY分量的响应影响最大,而当测井仪器偏心在Y方向时,XX分量的响应影响最大。The influence of the bed boundary, borehole drilling fluid, invasion and the tool eccentricity on apparent conduc- tivity of the three-coil array of a 3D induction well logging tool was analyzed. The results show that the apparent conductivity in the XX/YY direction can be affected more by borehole drilling fluid than the apparent conductivity in the ZZ direction. In the presence of invasion, the shift direction of the apparent XX/YY-direction conductivity is opposite to the ZZ-direction ap- parent conductivity. The borehole drilling fluid and invasion affect XZ/ZX-direction apparent conductivity mainly in the boundary. A decentralized tool will not affect the ZZ-direction apparent conductivity. When the tool is decentralized in the X direction, the apparent conductivity in the YY direction can be significantly distorted. But when the tool is decentralized in the Y direction, the effect on the apparent conductivity in the XX direction will be the maxmum.

关 键 词：三维感应测井 三线圈系 视电导率 层边界 井眼环境 钻井液 仪器偏心 正演模拟 

分 类 号：P631.8[天文地球—地质矿产勘探]