裂缝性储层的地震响应特征——以川中地区致密砂岩储层为例
|
摘要
为了提取裂缝性储层在不同地震剖面上的地震响应特征,利用相干分析方法得到了裂缝性储层发育区的裂缝识别标志。首先用模型正演方法设计符合研究区地质实际的裂缝性储层地质模型,以此建立研究区主频条件下的地震模型,总结裂缝发育区常规剖面上的地震响应特征;而后对地震模型进行相干性分析,得到了相干剖面上裂缝发育区的识别标志,对比发现相干分析的识别标志和常规剖面的地震响应特征是相吻合的,而且特征更明显、响应更清晰;最后通过钻井证实该区域裂缝发育带的存在,有效证明了相干分析方法在识别、预测裂缝发育带上是可靠的、科学的。
Coherent analysis method is adopted to obtain fracture identification marks in fractured reservoir development areas in order to obtain seismic response characteristics of fractured reservoirs on different seismic profiles. Adopted is the forward modeling firstly in this method to design the geological model of the fractured reservoirs consistent with actual conditions in the researched area, establish the seismic model under main frequency conditions in the area accordingly and summarize seismic response characteristics of fracture development areas on the conventional profiles. Conducted is coherent analysis on the seismic model and obtained are fracture identification marks in fracture development areas on relative profiles and it is found through comparison that the identification marks resulting from coherent analysis is consistent with the seismic response characteristics on the conventional profiles and the characteristics are more obvious and the response is more clear. Finally, it is confirmed through drilling that fracture development zones are real in the areas, which shows that the coherence analysis is an effective, reliable and scientific method for identifying and predicting fracture development zones.
Coherent analysis method is adopted to obtain fracture identification marks in fractured reservoir development areas in order to obtain seismic response characteristics of fractured reservoirs on different seismic profiles. Adopted is the forward modeling firstly in this method to design the geological model of the fractured reservoirs consistent with actual conditions in the researched area, establish the seismic model under main frequency conditions in the area accordingly and summarize seismic response characteristics of fracture development areas on the conventional profiles. Conducted is coherent analysis on the seismic model and obtained are fracture identification marks in fracture development areas on relative profiles and it is found through comparison that the identification marks resulting from coherent analysis is consistent with the seismic response characteristics on the conventional profiles and the characteristics are more obvious and the response is more clear. Finally, it is confirmed through drilling that fracture development zones are real in the areas, which shows that the coherence analysis is an effective, reliable and scientific method for identifying and predicting fracture development zones.
引文
[1]闵琪.低渗透油气田研究与实践[M].北京:石油工业出版社,1999.
[2]王兴建.地震裂缝须测方法研究及应用[D].成都理工大学,2003,1-5.
[3]周新桂,操成杰,袁嘉音.储层构造裂缝定量预测与油气渗流规律研究现状和进展[J].地球进展,2003,18(3):398-404.
[4]袁明声.低渗透裂缝性油藏勘探[M].北京:石油工业出版社.2001.
[5]李亚林,巫芙蓉,廖玲,等.储层裂缝发育带的地震综合预测[J].天然气工业,2006,26(11):49-51.
[6]宋岩,杨东泼.未来天然气工业发展综述.[J].天然气与石油.1999,17(1):64-65.
[7]Sherif R E,Geldart L P.勘探地震学[M].北京:石油工业出版社,1999:176-187.
[8]王建,刘玉瑞.应用正、反演组合技术预测碳酸盐岩储层[J].石油地球物理勘探,2002,37(5):506-510.
[9]王永刚,刘礼农.利用相干数据体检测断层与特殊岩性体[J].石油大学学报,2000,24(1):69-72.
[2]王兴建.地震裂缝须测方法研究及应用[D].成都理工大学,2003,1-5.
[3]周新桂,操成杰,袁嘉音.储层构造裂缝定量预测与油气渗流规律研究现状和进展[J].地球进展,2003,18(3):398-404.
[4]袁明声.低渗透裂缝性油藏勘探[M].北京:石油工业出版社.2001.
[5]李亚林,巫芙蓉,廖玲,等.储层裂缝发育带的地震综合预测[J].天然气工业,2006,26(11):49-51.
[6]宋岩,杨东泼.未来天然气工业发展综述.[J].天然气与石油.1999,17(1):64-65.
[7]Sherif R E,Geldart L P.勘探地震学[M].北京:石油工业出版社,1999:176-187.
[8]王建,刘玉瑞.应用正、反演组合技术预测碳酸盐岩储层[J].石油地球物理勘探,2002,37(5):506-510.
[9]王永刚,刘礼农.利用相干数据体检测断层与特殊岩性体[J].石油大学学报,2000,24(1):69-72.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心