霸县凹陷文安斜坡内带层序地层学研究
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摘要
以文安斜坡内带深层为研究对象,应用高分辨层序地层学等方法研究识别隐蔽油藏。通过兴隆1井地层重新划分及高分辨率三维地震应用,将该区沙三、沙四段地层之间重新确定为不整合接触。在三级层序地层框架建立的基础上,刻画各体系域砂体展布特征,构建了坡折带控制沙四下自生自储岩性油气藏成藏模式。通过钻井实践,首次在霸县凹陷发现沙四下段含油层系及新的烃源岩层,实现了深层自生自储式油藏类型的勘探突破。
This study presents an integrated approach that has been successfully used in delineation of subtle traps reservoirs in the down-slope of Wenan of Baxian sag.First,sequence stratigraphic analysis is carried out from well Xinglong 1,the boundary between the 3rd and 4th Members of Shahejie Formation is recognized as unconformity and the straitgraphic-sequences framework is reconstructed on the high-quality 3-D seismic reflection data. Then,the necessary analysis of slope-break control effect on layers,facies,sandstones and reservoirs is performed,and the corresponding sequence developing modle and vertical evolution modles adjacent to slope_break is suggested.Finally,the exploration result convinces the research analysis.The new exploration target and new source rock of low 4th Members of Shahejie Formation of down-slope of Wenan are revealed.This study also has implications for potential reservoir geometries and hydrocarbon on similar depositional environment.
This study presents an integrated approach that has been successfully used in delineation of subtle traps reservoirs in the down-slope of Wenan of Baxian sag.First,sequence stratigraphic analysis is carried out from well Xinglong 1,the boundary between the 3rd and 4th Members of Shahejie Formation is recognized as unconformity and the straitgraphic-sequences framework is reconstructed on the high-quality 3-D seismic reflection data. Then,the necessary analysis of slope-break control effect on layers,facies,sandstones and reservoirs is performed,and the corresponding sequence developing modle and vertical evolution modles adjacent to slope_break is suggested.Finally,the exploration result convinces the research analysis.The new exploration target and new source rock of low 4th Members of Shahejie Formation of down-slope of Wenan are revealed.This study also has implications for potential reservoir geometries and hydrocarbon on similar depositional environment.
引文
[1]邓宏文,王红亮,宁宁.沉积物体积分配原理:高分辨率层序地层学的理论基础[J].地学前缘,2000,7(4):305-314.
[2]冯有良,周海民,任建业,等.渤海湾盆地东部古近系层序地层及其对构造活动的响应[J].中国科学,2010,40(10):1356-1376.
[3]卢学军,刘华,王建瑞,等.渤海湾盆地霸县凹陷输导体系与新近系油气运聚特征[J].石油实验地质,2011,32(3):258-261.
[4]纪有亮,蒙启安,曹瑞成,等.贝南凹陷古地形对层序结构及沉积充填的控制[J].同济大学学报,2009,37(11):1541-1545.
[5]田建章,李先平,崔永谦,等.断陷湖盆缓坡带岩性地层油藏模式及勘探实践[J].石油地质,2010(2):24-28.
[6]石先滨,李红香,黄传炎,等.黄骅坳陷歧北次凹古近系沙一下亚段地质体精细刻画[J].大地构造与成矿学2007,34(4):536-544.
[7]谢宗奎.陆相断陷盆地低凸起斜坡带层序划分及其沉积充填演化特征:以埕岛东斜坡古近系为例[J].地学前缘,2010,17(4):174-184.
[8]赵力民,赵贤正,刘井旺,等.冀中坳陷古近系地层岩性油藏成藏特征及勘探方向[J].石油学报,2009,30(4):492-505.
[2]冯有良,周海民,任建业,等.渤海湾盆地东部古近系层序地层及其对构造活动的响应[J].中国科学,2010,40(10):1356-1376.
[3]卢学军,刘华,王建瑞,等.渤海湾盆地霸县凹陷输导体系与新近系油气运聚特征[J].石油实验地质,2011,32(3):258-261.
[4]纪有亮,蒙启安,曹瑞成,等.贝南凹陷古地形对层序结构及沉积充填的控制[J].同济大学学报,2009,37(11):1541-1545.
[5]田建章,李先平,崔永谦,等.断陷湖盆缓坡带岩性地层油藏模式及勘探实践[J].石油地质,2010(2):24-28.
[6]石先滨,李红香,黄传炎,等.黄骅坳陷歧北次凹古近系沙一下亚段地质体精细刻画[J].大地构造与成矿学2007,34(4):536-544.
[7]谢宗奎.陆相断陷盆地低凸起斜坡带层序划分及其沉积充填演化特征:以埕岛东斜坡古近系为例[J].地学前缘,2010,17(4):174-184.
[8]赵力民,赵贤正,刘井旺,等.冀中坳陷古近系地层岩性油藏成藏特征及勘探方向[J].石油学报,2009,30(4):492-505.
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