综合地球物理技术在济阳坳陷潜山油藏勘探开发中的应用
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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.
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.
引文
1 Deregowski S M.Commen-offset migration and velocity analysis[J]. First Break, 1990, 8(6) : 225～234
2 罗省贤,李录明.三维叠前深度偏移速度模型建立方法[J].石油物探,1999,38(4) :94～101
3 熊翥.复杂地区地震数据处理思路[M].北京:石油工业出版社,2002． 67～77
4 王军,刘传虎,闫昭岷.义和庄潜山灰岩裂缝储集层特征与地震预测技术[J].石油物探,2002,41(增刊):159～161
5 谭明友,刘福贵,董臣强.埕北30潜山构造演化与油气富集规律研究[J].石油地球物理勘探,2002,37(2) :134～137
6 郭良川,刘传虎,尹朝洪,等.潜山油气藏勘探技术[J].勘探地球物理进展,2002,25(1) :19～25
2 罗省贤,李录明.三维叠前深度偏移速度模型建立方法[J].石油物探,1999,38(4) :94～101
3 熊翥.复杂地区地震数据处理思路[M].北京:石油工业出版社,2002． 67～77
4 王军,刘传虎,闫昭岷.义和庄潜山灰岩裂缝储集层特征与地震预测技术[J].石油物探,2002,41(增刊):159～161
5 谭明友,刘福贵,董臣强.埕北30潜山构造演化与油气富集规律研究[J].石油地球物理勘探,2002,37(2) :134～137
6 郭良川,刘传虎,尹朝洪,等.潜山油气藏勘探技术[J].勘探地球物理进展,2002,25(1) :19～25
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