高邮凹陷黄珏、联盟庄地区戴一段砂体展布特征研究及应用

Distribution characteristics of of E_2d_1 Sand body in Huangjue and Lianmengzhuang area,Gaoyou Sag

从分析区域地质背景出发,在沉积相研究的基础上,通过对高邮凹陷西部黄珏、联盟庄地区100多口探井戴一段(E2d1)砂体进行解剖,认为在受构造背景和沉积体系的影响下,黄珏地区砂体以扇三角洲前缘分流河道砂体为主,砂体主要呈条带状分布,沿物源方向延伸,具有典型的水道砂体特征;联盟庄地区以三角洲前缘末端滩坝砂体为主,砂体发育受断层和波浪改造作用的影响。根据黄珏地区砂体沿河道延伸方向分布的地质模式,结合地震精细解释,对该区西部的储层进行预测,落实了黄88块隐蔽圈闭,取得了勘探突破。

On the basis of analyses of regional - geologic background and the sedimentary facies research in west area of Gaoyou sag, analysis of E2d1 sand body of more than 100 exploration wells in the area of Huangjue and Lianmengzhuang were anatomized. It is considered that under of the influence of tectonic setting and depositional system, Huangjue reservoir is mainly the sand - body of fan - delta front branch channel. The sand body was distributed bandedly, and extended along source area. It has typical characters of channel sand body. But Liangmengzhuang reservoir is mainly beach - dam sand body of endmost fan - delta front. The sand body development was mainly affected by fault and wave. In terms of geologic mode of sandbody extending along channel in Huangjue area, combined with fine seismic interpretation, prediction for western reservoirs in this area was carried out, and the subtle trap of Huang 88 was confirmed and drilled successfully.