少井地区沉积体系研究
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摘要
对于研究区沉积体系,在少井甚至没有钻井的情况下难以获得可靠的结论。因此,探索运用三维地震信息进行砂组单元的沉积体系研究。在区域沉积背景、单井沉积微相研究的基础上,介绍了在400多km2的范围内,借助各类三维地震信息,以谱分解资料确定砂岩的平面展布特征;以振幅体切片、波形相似体切片、地震反射波形特征确定水流主干通道;以波形相似体确定沉积体边界。进而对准噶尔盆地中部SWD地区三工河组二段Ⅰ砂组进行沉积体系研究,建立了东部、西部两大沉积体系,确定4支干流水道,为研究区岩性圈闭的解释评价打下了良好的基础。
It is difficult to obtain credible results from the study on the depositional system in sparse-borehole areas.The advanced 3D seismic information is used in the study on detailed depositional system.Based on the regional depositional settings and single well sedimentary microfacies,we apply spectral decomposition data to analyze the sand distribution in the area of about 400 km2,use amplitude slice,waveform analogue slice and reflection section to confirm the main stream channels,and use waveform analogue slice to determine the sedimentary boundary.The groupⅠ in the second member of Sangonghe Formation in the central Junggar Basin is divided into two depositional systems and four stream channels,which provides foundation for the interpretation of the lithologic traps in the study area.
It is difficult to obtain credible results from the study on the depositional system in sparse-borehole areas.The advanced 3D seismic information is used in the study on detailed depositional system.Based on the regional depositional settings and single well sedimentary microfacies,we apply spectral decomposition data to analyze the sand distribution in the area of about 400 km2,use amplitude slice,waveform analogue slice and reflection section to confirm the main stream channels,and use waveform analogue slice to determine the sedimentary boundary.The groupⅠ in the second member of Sangonghe Formation in the central Junggar Basin is divided into two depositional systems and four stream channels,which provides foundation for the interpretation of the lithologic traps in the study area.
引文
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[7]夏显佰,靳军.准噶尔盆地西北缘车拐地区侏罗系构造特征与勘探潜力分析[J].中国石油勘探,2003,8(4):29-33.
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[9]张巧凤,王余庆,王天琦.松辽盆地薄互层河道砂岩地震预测技术[J].岩性油气藏,2007,19(1):92-95.
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[2]马明珍.准噶尔盆地东部北三台地区侏罗系地层的物源研究[J].新疆石油学院学报,1995,7(1):33-40.
[3]Partyka G,Gridley J.频谱分解在油藏描述中的解释性应用[J].国外油气勘探,2000,12(1):94-101.
[4]陆基孟.地震勘探原理(下)[M].东营:石油大学出版社,1993:29-30.
[5]姜在兴.沉积学[M].北京:石油工业出版社,2003:282-298.
[6]罗凯声.准噶尔盆地侏罗系非构造油气藏勘探前景[J].新疆石油地质,2004,25(6):603-606.
[7]夏显佰,靳军.准噶尔盆地西北缘车拐地区侏罗系构造特征与勘探潜力分析[J].中国石油勘探,2003,8(4):29-33.
[8]谭开俊,潘建国,姚清洲,等.车拐地区侏罗系岩性油气藏形成条件及主控因素[J].岩性油气藏,2007,19(2):41-44.
[9]张巧凤,王余庆,王天琦.松辽盆地薄互层河道砂岩地震预测技术[J].岩性油气藏,2007,19(1):92-95.
[10]凌云工作组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2003,38(6):642-653.
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