东营北带东段胜坨—盐家地区砂砾岩扇体地层产状研究
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摘要
利用地震正演模拟、倾角测井分析、钻井地层对比等方法对东营凹陷北带胜坨—盐家地区砂砾岩扇体的地层产状进行了研究,取得以下成果:1在叠前深度偏移剖面上,陡坡带砂砾岩体存在向凸起的下倾现象,与时间域地震资料相比,能够更好地刻画砂砾岩体地层产状,与实际地层产状吻合性更好;2砂砾岩扇体地层产状主要受断层活动速率、断层倾角和古地形影响,在发育层系及空间分布上存在较大差异,按照倾角大小和产状可以分为背斜型、坡积型、反倾型和平缓型等4种类型;3砂砾岩体产状决定了油气藏类型和含油气分布范围,正确认识其地层产状对浅层和中深层砂砾岩体油气勘探具有重要影响。
By forward modeling,dip logs analysis,drilling stratigraphic correlation and some other technical means,the occurrence of glutenite fans in the steep slope zone of Shengtuo-Yanjia area,Dongying Depression were studied and we got the following results.1In the prestack depth migration section,the occurrence of glutinite fans show declination to the uplift compared with time domain ones prestack depth migration data can better describe the glutinite formation occurrence and which is better charcterized and coincides with the actual occurrence of glutinite fans in depth domain than in time domain.2The occurrence of glutenite fans is mainly controlled by the fault activity rate,the dip of fault and paleotopography and there is a big difference in the growth strata and spatial distribution;according to the inclination and occurrence,the glutenite fans can be divided into anticline type,slope type,anti-dumping type and horizontal type.3The occurrence of glutenite fans determines the reservoir type and the hydrocarbon distribution range that has an important influence on the oil and gas exploration in shallow and middle-deep glutenite hydrocarbon reservoirs.
引文
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