济阳坳陷湖相碳酸盐岩沉积主控因素
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摘要
随着济阳坳陷勘探成熟度的提高,尤其页岩油气勘探热潮的兴起,作为页岩油气"甜点"的湖相碳酸盐岩已受到勘探家关注。为了准确地预测湖相碳酸盐岩储层,利用4000多口探井的地质录井、分析化验以及测井、地震等资料,分析了影响济阳坳陷湖相碳酸盐岩沉积的控制因素。研究结果表明,研究区湖相碳酸盐岩沉积主要受古气候、古碳酸盐岩、古构造活动和大型砂砾岩扇体4个因素控制。干旱气候是盆地演化历史上碳酸盐岩阶段性发育的首要条件;盆缘周缘古碳酸盐岩提供物质基础,是湖相碳酸盐岩沉积的重要控制因素;古构造活动是影响碳酸盐岩沉积的主要控制因素,不同级别的断层对碳酸盐岩控制作用不同;大型砂砾岩扇体的形成抑制了碳酸盐岩沉积。
Great attention has been paid on the lacustrine carbonate rock as the "sweet point" of shale oil-gas by petroleum explorer with the improving of exploration intensity,especially the breakthrough of shale oil-gas exploration.To accurately predict the lacustrine carbonate reservoir,the controlling factors of the paleogene lacustrine carbonate rock's sedimentary development in Jiyang depression is analyzed in this paper based on applying comprehensively 4 000 exploration wells,geological logging,well logging,seismic and analysis data.The result shows that the development of lacustrine carbonate rock is controlled mainly by four factors including climates,old carbonate rock,tectonic and large sandy conglomerate bodies.Dry and hot climate is the primary condition to the growth of carbonate rock during the basin evolution.The old carbonate rock surrounding the basin is an important factor which controlled the deposition of lacustrine carbonate rock because they provide material basis.The tectonic is a main controlling factor to the distribution of lacustrine carbonate rock.Large sandstone rock influenced the sediment of lacustrine carbonate rock greatly.And,the faults of different orders have different influence on the development of lacustrine carbonate rock.This study may offer practical guidelines in predicting the "sweet point" of lacustrine carbonate reservoir and shale oil-gas.
Great attention has been paid on the lacustrine carbonate rock as the "sweet point" of shale oil-gas by petroleum explorer with the improving of exploration intensity,especially the breakthrough of shale oil-gas exploration.To accurately predict the lacustrine carbonate reservoir,the controlling factors of the paleogene lacustrine carbonate rock's sedimentary development in Jiyang depression is analyzed in this paper based on applying comprehensively 4 000 exploration wells,geological logging,well logging,seismic and analysis data.The result shows that the development of lacustrine carbonate rock is controlled mainly by four factors including climates,old carbonate rock,tectonic and large sandy conglomerate bodies.Dry and hot climate is the primary condition to the growth of carbonate rock during the basin evolution.The old carbonate rock surrounding the basin is an important factor which controlled the deposition of lacustrine carbonate rock because they provide material basis.The tectonic is a main controlling factor to the distribution of lacustrine carbonate rock.Large sandstone rock influenced the sediment of lacustrine carbonate rock greatly.And,the faults of different orders have different influence on the development of lacustrine carbonate rock.This study may offer practical guidelines in predicting the "sweet point" of lacustrine carbonate reservoir and shale oil-gas.
引文
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[2]马永生,梅冥相,陈小兵.碳酸盐岩储层沉积学[M].北京:地质出版社,1999:102-103.
[3]姚益民,梁鸿德.中国油气区第三系(Ⅳ)[M].北京:石油工业出版社,1994:121-122.
[4]王秉海,钱凯.胜利油区地质研究与勘探实践[M].东营:石油大学出版社,1992:12-20.
[5]袁文芳,陈世悦,曾昌民,等.渤海湾盆地古近系海侵问题研究进展及展望[J].沉积学报,2005,23(4):604-621.
[6]姚益民,徐金鲤,单怀广,等.山东济阳坳陷在第三纪海侵的讨论[J].石油学报,1992,13(2):29-34.
[7]葛瑞全,宋传春,淳萍,等.济阳沾-车凹陷古近系沙河街组海侵的再认识[J].高校地质学报,2003,9(3):450-457.
[8]田景春,尹观,覃健雄,等.中国东部早第三纪海侵与湖相白云岩成因之关系[J].中国海上油气:地质,1998,12(4):250-254.
[9]张玉宾.济阳坳陷及其邻近地区早第三纪海侵问题之我见[J].岩相古地理,1997,17(1):45-49.
[10]彭世福,许红,温珍河.试论渤海湾盆地沙河街组海侵作用与油气[J].海洋地质与第四纪地质,1989,9(1):17-28.
[11]李丕龙.陆相断陷盆地隐蔽油气藏形成[M].北京:石油工业出版社,2004:20-27.
[12]马永生.碳酸盐岩微相——分析、解释及应用[M].北京:地质出版社,2006:7-49.
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