海坨子—大布苏地区青三段砂体沉积机制与岩性油藏
|
摘要
松辽盆地南部海坨子—大布苏地区青三段地层发育几套厚层砂体,通过合成记录标定及地震属性分析,表明该套厚层砂体具有长、直、窄的条带型沉积特征。对其成因许多学者提出多种假设,如:风成、潮汐、河流、滑塌等,但是所有的假设都不能很好解释此种砂体分布特征。研究认为海坨子—大布苏地区位于坡折带之上,地形落差大,水流下切作用强,对下伏地层造成侵蚀,形成深而窄的湖缘峡谷。湖缘峡谷控制砂体的沉积,该砂体在上倾方向上与断层有机配置可形成断层-岩性油气藏。
Based on the synthetic seismogram calibration and seismic attribute analysis,a series of thick sand bodies developed in the third member of Qingshankou Formation in Haituozi-Dabusu area,southern SongLiao Basin were characterized by banded sedimentary characteristics of long,straight and narrow shape.There are some assumptions for their genesis proposed by many scholars,such as aeolation,tide,fluviation and slump,but none of them could interpret the distribution features accurately.This result showed that Haituozi-Dabusu area is located in slope break belt,with large terrain drop height and intense fluent vertical erosion,which caused erosion to the substratum,then formed the deep and narrow lake rim canyons which control the deposit of the sand bodies and result in the banded sedimentary characteristics.The combining of the sand bodies and faults in updip direction could possibly form fault-lithologic reservoirs.
Based on the synthetic seismogram calibration and seismic attribute analysis,a series of thick sand bodies developed in the third member of Qingshankou Formation in Haituozi-Dabusu area,southern SongLiao Basin were characterized by banded sedimentary characteristics of long,straight and narrow shape.There are some assumptions for their genesis proposed by many scholars,such as aeolation,tide,fluviation and slump,but none of them could interpret the distribution features accurately.This result showed that Haituozi-Dabusu area is located in slope break belt,with large terrain drop height and intense fluent vertical erosion,which caused erosion to the substratum,then formed the deep and narrow lake rim canyons which control the deposit of the sand bodies and result in the banded sedimentary characteristics.The combining of the sand bodies and faults in updip direction could possibly form fault-lithologic reservoirs.
引文
[1]王永春.松辽盆地南部岩性油藏的形成和分布[M].北京:石油工业出版社,2001.
[2]刘震.张万选.殷积峰,等.地震岩性模式识别研究[J].地质科学,1993,28(4):63-75.
[3]赵澄林.油区岩相古地理[M].北京:石油大学出版社,2001.
[4]俞寿朋.高分辨率地震勘探[M].北京:石油工业出版社,2001.
[5]曹思远,刘宏伟,撒利明.断点信息的恢复技术研究[J].石油勘探与开发,2002,29(1):103-105.
[6]庞雄奇,陈冬霞,张俊.隐蔽油气藏的概念与分类及其在实际应用中需要注意的问题[J].岩性油气藏,2007,19(1):1-8.
[2]刘震.张万选.殷积峰,等.地震岩性模式识别研究[J].地质科学,1993,28(4):63-75.
[3]赵澄林.油区岩相古地理[M].北京:石油大学出版社,2001.
[4]俞寿朋.高分辨率地震勘探[M].北京:石油工业出版社,2001.
[5]曹思远,刘宏伟,撒利明.断点信息的恢复技术研究[J].石油勘探与开发,2002,29(1):103-105.
[6]庞雄奇,陈冬霞,张俊.隐蔽油气藏的概念与分类及其在实际应用中需要注意的问题[J].岩性油气藏,2007,19(1):1-8.
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