摘要
以珠江口盆地陆丰油区A油田为例,通过模型正演分析了引起地震波传播非对称走时的主要原因,进而通过层速度求取、平均速度求取、速度宏观趋势校正与实钻资料剩余误差校正等步骤,建立了反映实际地质情况的时深转换关系,得到了精度较高的构造图,从而减小了实钻深度与预测深度的误差,有力支持了该油田调整项目的顺利实施。
Taking A oilfield in Lufeng area as an example,the main causes of seismic asymmetric travel time were analyzed by the forward modeling.Then through several steps such as acquiring horizon velocity and average velocity and correcting macro velocity trend and remainder error of actual drilling data,a relation of time depth conversion to reflect the real geological situation was established and the more accurate structure maps were made,so as to decrease the error between actual drilling depth and predicted depth and support powerfully the successful implementation of adjustment projects in this oilfield.
出处
《中国海上油气》
CAS
CSCD
北大核心
2014年第3期61-64,71,共5页
China Offshore Oil and Gas
关键词
低幅度构造
非对称走时
构造畸变
速度分析
井震时深转换
low relief structure
asymmetric travel time
structure distortion
velocity analysis
borehole seismic time-depth conversion
