一种基于随钻VSP地震地质导向的钻井轨迹高效优化方法及其应用

杨敬雅, 李相文, 刘永雷, 徐博, 高江涛, 王茂, 吴江勇, 张泉

An efficient method for drilling trajectory optimization based on seismological and geological guidance of VSP data during drilling and its application

Jing-Ya YANG, Xiang-Wen LI, Yong-Lei LIU, Bo XU, Jiang-Tao GAO, Mao WANG, Jiang-Yong WU, Quan ZHANG

图2 水平地层时速度误差对“串珠”成像影响的正演分析 a—采用弹性波动方程模拟、逆时偏移处理方法的成果;b—采用与图a相同处理方法所得成果;c—采用与图a相同处理方法所得成果;d—图a对应的各向同性速度场;e—图b对应的各向同性速度场,黑色虚框内速度为图d速度场值的98%;f—图c对应的各向同性速度场,黑色虚框内速度为图d速度场值的102%

Fig.2 Forward analysis of the effect of velocity errors on "beads" imaging in horizontal formation a—the results of elastic wave equation simulation and reverse time migration processing;b—the results obtained by the same processing method as figure a;c—the results obtained by the same processing method as figure a;d—the results obtained by the same processing method as figure a;e—the isotropic velocity field corresponds to figure b,the velocity in the black virtual frame is 98% of the value of the velocity field in figure d;f—the isotropic velocity field corresponds to figure c,the velocity in the black virtual frame is 102% of the value of the velocity field in figure d