摘要
本文提出一套针对层间圈闭的解释方法。首先对测井曲线分段，求出变ｖ０和变β速度参数，以使深度－时间转换准确；然后用约束反演方法合成井旁地震道，以此细致地标定地震反射层位；最后在平面用变速成图方法编制层间构造图。该方法应用于松辽盆地齐家地区高二组层间圈闭的解释，构造图对井误差小于２１ｍ，相对误差低于１．５％；新发现了６个层间圈闭，总面积约１８．６ｋｍ２，为该区的油气勘探提供了新目标。
A set of interpretation technique according to the characteristics of interlayer traps is suggested in this paper. Logging record is sectioned vertically to find out speed parameters, such as variable v0 and variable β…etc., to have an accurate depth-time transformation; then a wellsite synthetic seismogram is constracted by conetrained inversion; and seismic reflection strata are calibrated in detaile, and finally planar interlayer structures are mapped out by variable speed mapping. This technique has been used in the interpretation of interlayer traps in the Gao 2nd subgroup. The error in a single is found to be 21m, equivalent to a relative error of 1. 5%; and 6 interlayer traps have been discovered with a total area of 18. 6km2. Thus, new targets for oil and gas exploration are found out.
出处
《石油勘探与开发》
EI
CAS
CSCD
北大核心
1995年第4期16-19,共4页
Petroleum Exploration and Development
关键词
地震测井
层间圈闭
圈闭
测井解释
Seismic interpretation
Seismic record
Constrained inversion
Rariable speed mapping
Interlayer trapping
