松南月亮泡地区青山口组高分辨层序研究与岩性圈闭预测
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摘要
月亮泡地区位于松南西部沉积体系斜坡背景下的三角洲前缘相带,受坡度、物源等因素影响,地层对比误差较大,沉积相认识不清楚,岩性圈闭难以落实。通过建立研究区高分辨率等时层序地层格架,重新分析区域的沉积演化模式,发现在青一二、青三层序时期地层内部发育多套上倾尖灭的地震反射轴。进一步研究证实,该地震反射轴反映松南月亮泡地区高台子油层发育了多期叠置的三角洲前缘沉积,即为本区的超覆圈闭发育区。应用三维地震识别技术刻画出岩性圈闭的展布形态和分布范围。高分辨率层序理论的应用在本区岩性油藏勘探中起到了重要的指导作用。
Yueliangpao area is located in the delta front of western slope in southern Songliao Basin.Under the influence of slope and provenance,stratigraphic correlation,sedimentary facies recognition and lithologic trap exploration are hard to perform.By establishing high-resolution isochronous stratigraphic framework and re-analyzing regional sedimentary evolution model,several sets of updip pinchout seismic reflection axis are identified in the interior of Qing 1st and Qing 2nd sequence,and Qing 3rd sequence.Further research proved that these seismic reflections are responses of multiple-stage overlay delta front deposition of Gaotaizi oil reservoir in Yueliangpao area,where stratigraphic overlap trap are well developed.Therefore,the 3-D seismic technology can be used to describe the distribution form and range of lithologic trap.The theory of high-resolution sequence stratigraphy plays an important guiding part in the exploration of the lithologic oil reservoir in Yueliangpao area.
Yueliangpao area is located in the delta front of western slope in southern Songliao Basin.Under the influence of slope and provenance,stratigraphic correlation,sedimentary facies recognition and lithologic trap exploration are hard to perform.By establishing high-resolution isochronous stratigraphic framework and re-analyzing regional sedimentary evolution model,several sets of updip pinchout seismic reflection axis are identified in the interior of Qing 1st and Qing 2nd sequence,and Qing 3rd sequence.Further research proved that these seismic reflections are responses of multiple-stage overlay delta front deposition of Gaotaizi oil reservoir in Yueliangpao area,where stratigraphic overlap trap are well developed.Therefore,the 3-D seismic technology can be used to describe the distribution form and range of lithologic trap.The theory of high-resolution sequence stratigraphy plays an important guiding part in the exploration of the lithologic oil reservoir in Yueliangpao area.
引文
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[2]赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2001.
[3]辛仁臣,王英民,冯志强,等.松辽盆地中央凹陷区西部重力流沉积特征及其成因模式[J].地球学报,2003,24(增刊):58-63.
[4]吴崇筠.中国含油气盆地沉积学[M].北京:石油工业出版社,1992.
[5]纪友亮,张世奇,张宏.层序地层学原理及层序成因机制模式[M].北京:地质出版社,1998.
[6]邓宏文,王红亮,李熙喆.层序地层学基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177-183.
[7]邹才能,池英柳,李明,等.陆相层序地层学分析技术[M].北京:石油工业出版社,2004.
[8]董伟,林畅松,秦成岗,等.珠江口盆地番禺低隆起韩江组高精度层序格架和沉积样式与岩性地层圈闭的发育分布[J].现代地质,2008,22(5):794-802.
[9]张英志,林畅松,马利民,等.大庆油田葡一油层组高精度层序格架内储集砂体的沉积构成及其对油田开发的意义[J].现代地质,2006,20(2):225-231.
[10]林畅松.沉积盆地的构造地层分析——以中国构造活动盆地研究为例[J].现代地质,2006,20(2):185-194.
[11]邓宏文,王红亮,祝永军.高分辨率层序地层学——原理及应用[M].北京:地质出版社,2002.
[12]蔡希源,李思田.陆相盆地高精度层序地层学[M].北京:地质出版社,2003.
[13]凌云研究组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2006,38(6):642-653.
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