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辽河动陷是渤海湾盆地油气资源丰度很高的一个断陷,发育各种类型的沉积体系和它们的组合类型,以缓坡辫状河三角洲、陡坡扇三角洲和缓被远岸水下扇、陡坡近岸水下扇含油性最佳;在各类沉积体系中,技含油丰度由高到低排序,依次为辫状河三角洲、扇三角洲、缓坡水下扇、陡坡水下扇、曲流河三角洲、滩坝和河流。该协陷经过30年的勘探、开发,已建成中国第三大油田。80年代以来,在其滩海地区(面积约占全场陷的1/5)、陆上各凹陷的深层(埋深大于3km)和古潜山的油气勘探又有新进展,是今后辽河动陷最重要的勘探领域。进一步研究辽河坳陷沉积体系类型及其组合型式、分布规律和含油性,并与圈闭分析相结合,对其深层和滩海的评价及有利勘探目标的预测有重要价值;要针对勘探目标特点,加强多学科综合分析工作,以达到少打井多拿储量的目的;要注意各级湖泛面之间砂体的类型和分布,进一步寻找老性和地层油气藏。
The Liaohe River movement is a fault depression with high oil and gas resource abundance in the Bohai Bay Basin. Various types of sedimentary systems and their combination types are developed. The gentle braided river delta, steep slope fan delta and submarine submarine fan, steep slope The nearshore subaqueous fan has the best oil content. In all sedimentary systems, the technical oil abundance is ordered from high to low, including braided river delta, fan delta, gentle slope underwater fan, steep slope underwater fan, meandering river Delta, beach dam and river. After 30 years of exploration and development, the system has been built into the third largest oilfield in China. Since the 1980s, new progress has been made in the exploration of oil and gas in the deep sea areas (buried depth greater than 3 km) and buried hills in the littoral area (accounting for about 1/5 of the total depression), and the Liaohe River move The most important exploration area. It is of great value to further study the types of sedimentary systems and their combination types, distribution and oiliness in the Liaohe Depression, combined with the analysis of traps, and to evaluate the deep and beach sea and the prediction of favorable exploration targets. According to the characteristics of exploration targets , Strengthen multidisciplinary comprehensive analysis in order to achieve less drilling wells to take more reserves purposes; pay attention to the types and distribution of sand body between the flood surface at all levels, to further search for the old and stratigraphic reservoirs.