饶阳凹陷蠡县斜坡岩性油藏勘探技术
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摘要
蠡县斜坡是饶阳凹陷油气运移的主要指向之一,圈闭类型以构造—岩性和岩性圈闭为主,成藏条件相对较为复杂。相对饶阳凹陷中央构造隆起带,蠡县斜坡岩性油藏勘探程度较低,是饶阳凹陷勘探的主要潜力区。近年来,在斜坡带岩性油藏成藏条件研究的基础上,大胆构建顺向断阶式、反向断鼻侧翼尖灭式、复杂断块式及坡折带上倾尖灭式4种类型成藏模式,采取了地震相特征刻画砂体几何外形、精细储层预测落实岩性圈闭边界等针对性勘探研究方法,取得了勘探新突破,发现5000×104t级储量。
Lixian slope zone is thought as the main direction of hydrocarbon migration in Raoyang sag. Traps are mostly structural-lithologic and lithologic, and the reservoir accumulation conditions are more complicated. The lithologic reservoir in Lixian slope zone is less explored than the central structural high in Raoyang sag, and it is the main potential area of exploration in the sag. Based on the study on accumulation conditions of lithologic reservoir in the slope zone, four types of reservoir accumulation patterns have been established exploration, i.e. the forward fault type, the side-dip pinch-out type controlled by reversed faultnose, the complex fault-block type, and the up-dip pinch-out type controlled by slope-break zone. Target exploration research methods have been adopted, such as the use of seismic facies features to describe sand body geometry and the fine reservoir prediction to confirm lithologic trap boundary. And finally new breakthroughs were made in exploration, and 50 million tons of reserves were discovered in Lixian slope zone.
Lixian slope zone is thought as the main direction of hydrocarbon migration in Raoyang sag. Traps are mostly structural-lithologic and lithologic, and the reservoir accumulation conditions are more complicated. The lithologic reservoir in Lixian slope zone is less explored than the central structural high in Raoyang sag, and it is the main potential area of exploration in the sag. Based on the study on accumulation conditions of lithologic reservoir in the slope zone, four types of reservoir accumulation patterns have been established exploration, i.e. the forward fault type, the side-dip pinch-out type controlled by reversed faultnose, the complex fault-block type, and the up-dip pinch-out type controlled by slope-break zone. Target exploration research methods have been adopted, such as the use of seismic facies features to describe sand body geometry and the fine reservoir prediction to confirm lithologic trap boundary. And finally new breakthroughs were made in exploration, and 50 million tons of reserves were discovered in Lixian slope zone.
引文
[1] 赵贤正,金凤鸣,张以明,等.陆相断陷洼槽聚油理论与勘探实践[M].北京:科学出版社,2009:279～288.
[2] 鲁国明,刘魁元,等.济阳坳陷高凸起斜坡带新近系油气成藏与勘探实践[J].石油与天然气地质,2006,4(2):258～262.
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[4] 纪学武,夏义平,康南昌,等.岩性地层圈闭识别工作步骤及配套技术[J].石油地球物理勘探,2008,43(1):101～106.
[5] 王建功,卫平生,史永苏,等.松辽盆地南部西部斜坡区大规模岩性油气藏和地层超覆油气藏成藏条件[J].中国石油勘探,2003,8(3):27～31.
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[2] 鲁国明,刘魁元,等.济阳坳陷高凸起斜坡带新近系油气成藏与勘探实践[J].石油与天然气地质,2006,4(2):258～262.
[3] 易士威,王权.岩性地层油气藏勘探思路与勘探方法[J].中国石油勘探,2005,10(2):9～14.
[4] 纪学武,夏义平,康南昌,等.岩性地层圈闭识别工作步骤及配套技术[J].石油地球物理勘探,2008,43(1):101～106.
[5] 王建功,卫平生,史永苏,等.松辽盆地南部西部斜坡区大规模岩性油气藏和地层超覆油气藏成藏条件[J].中国石油勘探,2003,8(3):27～31.
[6] 梁生正,吴小洲.论楔状地层岩性油气藏中的异常油水分异[J].勘探家,1997,2(3):9～13.
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