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陆相断陷湖盆陡坡带由于具有特殊的构造背景,在下降盘易发育各种类型的砂砾岩扇体,且具有很好的含油气前景,近几年各大油田也都将其作为增储上产的重要勘探领域.但由于这些扇体一般都具有较大的隐蔽性,而且控制影响因素复杂,尤其是对于为数较多的受高角度大断层控制的断陷湖盆,在陡坡带进行砂砾岩扇体的勘探具有更大的风险性.本文运用层序地层学、地震精细描述等勘探新理论、新技术和新方法,结合生产实际,对东濮凹陷高角度兰聊陡坡带砂砾岩扇体形成机制及成藏规律进行了多学科综合研究,查明了扇体的成因机制、控制因素、分布规律,并进一步探讨了扇体成藏机理和成藏规律,为下一步勘探指明了有利方向和钻探目标,期望为国内外同类盆地陡坡带油气资源的勘探也提供了一定的借鉴.
Due to its special tectonic setting, steep slope belts of continental rift lacustrine facies are prone to develop various types of conglomerate fan bodies on the descent tray and have good hydrocarbon-bearing prospects. In recent years, all major oilfields have also regarded them as increasing But due to the large hidden nature of these fans and the complicated control factors, especially for a large number of fault-controlled lakes controlled by high-angle and large faults, It is more risk to carry out the exploration of glutenite fan body.In this paper, new theories, new techniques and new methods of exploration, such as sequence stratigraphy and fine seismic description, are combined with the actual production to study the gravel rock mass of Lanchatu steep slope in Dongpu Depression Multi-disciplinary comprehensive study on the formation mechanism and accumulation of rock fan bodies, and the genesis mechanism, controlling factors and distribution rules of the fan body have been ascertained, and the forming mechanism and genesis of the fan body have also been discussed. The favorable direction and the drilling target are expected to be expected to provide some reference for the exploration of oil and gas resources in the steep slope zone of the same kind at home and abroad.