四川盆地西部新场地区致密砂岩气藏储层预测方法研究
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摘要
四川盆地新场地须家河组X49砂层组属于扇三角洲前缘沉积,为该地区最重要的产气层。由于埋藏深度深,储层较致密,其中沉积微相和裂缝的发育程度共同控制着致密砂岩优质储层的形成和发育。以地震沉积学理论为主体研究思路,运用钻井控制的混合相位子波反褶积技术提高分辨率技术,克服了复杂构造情况地震数据非零相位的缺陷,扩宽了地震有效频宽,同时使剖面零相位化,确定了地震反射的地质含义。基于子波重构后的地震数据能够清晰的刻画小断裂的发育。最终确立了水下分流河道与断裂发育带的叠合区域为储层有利发育区,扩宽了地震沉积学的研究手段,同时预测结果为下一步勘探提供了可靠依据。
In Sichuan Basin Xinchang area,Xujiahe group X49 sand sets are fan delta front deposition,as the region's most important product layer.The sedimentary microfacies and fracture development degree of control quality of reservoir formation and development.Based on the seismic sedimentology theory as the main research ideas,the drilling control of mixed phase wavelet deconvolution technique is used to improve resolution technique,overcomes the complex structure seismic data non zero phase defect,widening the earthquake effective bandwidth,while making the profile of zero phase,determine the seismic geological meaning.Based on the wavelet reconstruction after the earthquake data,description of small faults can be cleaed.Eventually established the underwater distributary channel and fracture development belt superimposed area for the favorable reservoir development zone,as the next step exploration and,a reliable basis is provided.
In Sichuan Basin Xinchang area,Xujiahe group X49 sand sets are fan delta front deposition,as the region's most important product layer.The sedimentary microfacies and fracture development degree of control quality of reservoir formation and development.Based on the seismic sedimentology theory as the main research ideas,the drilling control of mixed phase wavelet deconvolution technique is used to improve resolution technique,overcomes the complex structure seismic data non zero phase defect,widening the earthquake effective bandwidth,while making the profile of zero phase,determine the seismic geological meaning.Based on the wavelet reconstruction after the earthquake data,description of small faults can be cleaed.Eventually established the underwater distributary channel and fracture development belt superimposed area for the favorable reservoir development zone,as the next step exploration and,a reliable basis is provided.
引文
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2 Zeng Hongliu,Henry S C,Riola J P.Stratal slicing,Part II:Realseismic data.Geophysics,1998;63(2):514—522
3 Zeng Hongliu,Hentz T F.High-frequency sequence stratigraphy fromseismic sedimentology:Applied to Miocene,Vermilion Block 50,Ti-ger Shoal area,offshore Louisiana.AAPG Bulletin,2004;88(2):153—174
4张义娜,朱筱敏,刘长利.地震沉积学及其在中亚南部地区的应用.石油勘探与开发,2009;36(1):74—79
5陈海清,范金源,贺保卫等.地震资料解释新技术在柴达木岩性勘探中的应用.石油地球物理勘探,2008;43(1):78—84
6应明雄.地震沉积学在塔巴庙D气田的应用研究.成都:成都理工大学,2009
7刘喜武,宁俊瑞,刘培体,等.地震时频分析与分频解释及频谱分解技术在地震沉积学与储层成像中的应用.地球物理学进展,2009;24(5):1679—1688
8董春梅,张宪国,林承焰.有关地震沉积学若干问题的探讨.石油地球物理勘探,2006;41(4):405—409
9高静怀,汪文秉,朱光明,等.地震资料处理中小波函数的选取.地球物理学报,1996;39(3):392—400
10张繁昌,李传辉.基于正交时频原子的地震信号快速匹配追踪.地球物理学报,2012;55(1):277—283
11李虎,秦启荣,王时林,等.大邑构造须二段储层裂缝综合预测.特种油气藏,2010;17(6):54—58
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