摘要
济阳坳陷潜山储层横向变化大,埋藏深,地震资料品质差,识别与预测难度很大。在横向速度变化剧烈,地下构造十分复杂的车西地区,叠前时间偏移和叠前深度偏移技术联合应用获得了成功。对当前陆地资料叠前成像中的一些难点问题及其解决办法作了探讨,应用精细层位标定与变速成图等技术精细刻画潜山构造。以岩石物性参数分析及储层发育特征分析为基础,利用测井约束反演,地震相分类,相干分析,吸收系数和地质构造应力应变分析及模式识别等技术,对济阳坳陷的几个潜山进行预测,取得了很好的效果。
The relatively poor quality seismic data pose a challenge to identify and predict the buried-hill reservoirs
in Jiyang sag. The combination of prestack time migration and prestack depth migration is successfully applied in
Chexi area that is characterized by rapid lateral velocity variations and complex structures. This paper discusses
the difficulties in prestack imaging on land seismic data and their solutions, and the delineation of buried hills via
detailed horizon calibration and velocity-variant mapping. Based on an analysis of petrophysical properties and res-
ervoir characteristics, we made a prediction of buried hills by a combination of techniques such as log-constrained
inversion, seismic facies classification, coherence cube, absorption coefficient and tectonic stress analysis, and
pattern recognition.
出处
《勘探地球物理进展》
2004年第3期157-169,共13页
Progress in Exploration Geophysics
