大港歧北斜坡沙二段和沙三段模型指导下薄互层储层预测及效果
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摘要
歧北斜坡沙二段和沙三段受多物源沉积体系控制,发育沿岸沙坝、辨状河三角洲、扇三角洲、斜坡扇、近岸水下扇等多种类型的砂体,砂体为薄互层结构,单层厚度薄、延伸短;不同沉积类型的储集体地质特征差异大,地球物理响应特征复杂,利用地震资料进行储层预测难度大。本文阐述了以地质规律、模型正反演研究为指导,在储层地球物理特征分析的基础上,通过等时地层格架约束下滚动、分段精细拟波阻抗反演的储层预测方法及实施效果。该项成果为歧北斜坡岩性油气藏的勘探与发现亿吨级规模储量提供了重要依据。
Es2 and Es3 in the north slope of Qikou sag are controlled by many source sedimentary systems.Various types of sand body,including long shore bar,braid river deltas,fan deltas,slope fan,near shore subaqueous fans etc.,are developed in this area.Sand bodies are characterized by thin layer,short extending and thin interbedding structure.Different sedimentary types of reservoir have large differences in geological characteristics and complex geophysical response characteristics,and it is difficult to predict reservoir by seismic data.Under the guidance of geological law and forward-inversion modeling,based on the reservoir geophysical characteristics analysis,this paper states reservoir prediction of isochronous stratigraphic framework constrained scroll,section fine inversion and implementation effect.The result provides significant evidence for the exploration of lithologic reservoirs and the discovery of hundred million tons of reserves.
Es2 and Es3 in the north slope of Qikou sag are controlled by many source sedimentary systems.Various types of sand body,including long shore bar,braid river deltas,fan deltas,slope fan,near shore subaqueous fans etc.,are developed in this area.Sand bodies are characterized by thin layer,short extending and thin interbedding structure.Different sedimentary types of reservoir have large differences in geological characteristics and complex geophysical response characteristics,and it is difficult to predict reservoir by seismic data.Under the guidance of geological law and forward-inversion modeling,based on the reservoir geophysical characteristics analysis,this paper states reservoir prediction of isochronous stratigraphic framework constrained scroll,section fine inversion and implementation effect.The result provides significant evidence for the exploration of lithologic reservoirs and the discovery of hundred million tons of reserves.
引文
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[2]崔永谦,邵龙义,卢永和,等.陆相断陷不同类型沉积砂体地震储层预测方法[J].勘探技术,2010(2):55～58.
[3]李晓燕,金芳,杜维良,等.饶阳凹陷蠡县斜坡岩性油藏勘探技术[J].勘探技术,2010(2):64～69.
[4]葛新,门相勇,尉晓玮,等.滩坝储层综合预测方法[J].大庆石油地质与开发,2010,29(2):14～17.
[5]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.
[6]杨平.刘云武,金成志.岩性圈闭预测方法及应用[J].大庆石油地质与开发,2003,22(3):10～12.
[7]蔡希源,李思田.陆相高精度层序地层学:隐蔽油气藏勘探基础、方法与实践:基础理论篇[M].北京:地质出版社,2004.
[8]吴因业,顾家裕,油气层序地层学[M].北京:石油工业出版社,2002.
[9]印兴耀,韩文功,李振春,等.地震技术新进展(下)[M].山东东营:中国石油大学出版社,2006.
[10]穆星,印兴耀,王孟勇.济阳坳陷储层地震地质综合预测技术研究[J].石油勘探,2006,45(4);351～356.
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