水平井中随钻电阻率测量仪定位和预测地层界面的方法

Methods for Orientation of Formation Layerings and Formation Boundary Prediction with LWD Resistivity Logs in HZ Wells

研究了倾斜分层非均匀介质条件下随钻电磁波电阻率测井的电磁响应,分析了测量工具在穿越地层界面时的特征,进而提出了水平井条件下利用电阻率曲线准确划分地层界面和进行地质前向预测的方法。数值模拟和应用实践证明该方法是有效的。

Introduces responses of LWD electromagnetic resistivity tool used in dipping beds and laminated formations; Analyses resistivity curves of the tool penetrating through formation boundaries, and further proposes two methods, one is for accurate orientation of formation layerings, the other is for correct before-bit formation boundary prediction to geosteering the wells to a specific target. Numerical modeling and practical application have proved the above methods are effective.