沉积背景控制下的储层预测方法——以大牛地气田TGM地区的应用为例
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摘要
TGM地区是大牛地气田天然气产能建设的重要区块,但该区天然气储层层系多、厚度薄,横向非均质性强,加之地震资料分辨率低,导致精确储层预测困难。为减小TGM地区储层预测的多解性,最大限度地提高储层预测的精度,在深入分析TGM地区储层发育地质特征的基础上,提出了沉积背景控制下的储层预测思路:将TGM地区储层预测作为一个系统工程,首先从储层的沉积背景出发圈定储层发育有利区块;然后针对有利区的地质情况和地震资料特征,选取针对性的储层预测方法和技术,对储层进行精细刻画。针对TGM地区太原组、山西组和下石盒子组储层预测的结果与钻井的符合率在90%以上。
TGM area is an important potential gas-production zone in Daniudi gasfield.However,its accurate reservoir prediction faces a series of problems,including multi-sequence reservoir,thin reservoir, heterogeneous reservoir and low-resolution seismic data.In order to fully improve the precision of reservoir prediction,the reservoir prediction method with the constraint of sediment background was proposed.Taking the reservoir prediction in TGM area as a systematic project,firstly,the potential reservoir zones are delineated with the constraint of sediment background;secondly,aiming at the geologic conditions and seismic data characteristics of the favorable area, effective reservoir prediction methods are selected to depict the reservoirs.The prediction results of Taiyuan,Shanxi and lower Shihezi formation in TGM area has more than 90%coincidence rate with drilling formation.
TGM area is an important potential gas-production zone in Daniudi gasfield.However,its accurate reservoir prediction faces a series of problems,including multi-sequence reservoir,thin reservoir, heterogeneous reservoir and low-resolution seismic data.In order to fully improve the precision of reservoir prediction,the reservoir prediction method with the constraint of sediment background was proposed.Taking the reservoir prediction in TGM area as a systematic project,firstly,the potential reservoir zones are delineated with the constraint of sediment background;secondly,aiming at the geologic conditions and seismic data characteristics of the favorable area, effective reservoir prediction methods are selected to depict the reservoirs.The prediction results of Taiyuan,Shanxi and lower Shihezi formation in TGM area has more than 90%coincidence rate with drilling formation.
引文
1候洪斌,牟泽辉,朱宏权.鄂尔多斯盆地北部上古生界天然气成藏条件与勘探方向[M].北京:石油工业出版社,2004.4-8
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3张莉,朱筱敏,钟大康,等.惠民凹陷古近系砂岩储层物性控制因素评价[J].吉林大学学报:地球科学版, 2007,37(1):105-111
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5凌云,惠晓宇,孙德胜,等.薄储层叠后反演影响因素分析与地震属性解释研究[J].石油物探,2008,47(6): 531-538
6姜岩,李文艳,吴明华.一种模糊神经网络技术及其在储层预测中的应用[J].石油物探,2004,43(4):377- 379
7印兴耀,周静毅.地震属性优化方法综述[J].石油地球物理勘探,2005,40(4):482-489
2杨俊杰.鄂尔多斯盆地构造演化与油气分布规律[M].北京:石油工业出版社,2002.33-38
3张莉,朱筱敏,钟大康,等.惠民凹陷古近系砂岩储层物性控制因素评价[J].吉林大学学报:地球科学版, 2007,37(1):105-111
4凌云,孙德胜,高军,等.基于三维地震数据的准层序组内沉积体的解释研究[J].石油物探,2005,44(6): 569-577
5凌云,惠晓宇,孙德胜,等.薄储层叠后反演影响因素分析与地震属性解释研究[J].石油物探,2008,47(6): 531-538
6姜岩,李文艳,吴明华.一种模糊神经网络技术及其在储层预测中的应用[J].石油物探,2004,43(4):377- 379
7印兴耀,周静毅.地震属性优化方法综述[J].石油地球物理勘探,2005,40(4):482-489
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