大民屯凹陷西陡坡沙河街组沙四段发育砂砾岩沉积,累计资源潜力超过2×10~8t。勘探实践证明,砂砾岩体具有纵向厚度大、相带及岩性变化快、储层物性差异大、地震识别描述难度大的特点。自2014年以来,针对大民屯凹陷砂砾岩体多期叠置、非均质性强的特征,从储量上报升级、探井部署质量和有效储层开发等方面开展一体化联合攻关,探索建立了厚层砂砾岩体期次划分、复杂岩性储层识别以及非均质性砂砾岩有效储层地震预测等砂砾岩体勘探技术系列,并获得了“陡岸控砂、相带控储、物性控藏”的地质认识。通过大民屯凹陷西陡坡沙四段砂砾岩体的勘探,顺利完成了对平安堡-安福屯扇体的井位部署工作及储量上报,新部署实施探井4口,3口井获得工业油流;实施4口老井试油,试油符合率达到80%以上;2015年新增含油面积35km~2,上报各级储量超过5000×10~4t。 The gravel sediments of Shahejie Formation of Shahejie Formation in west steep slope of Damintun Depression have a cumulative potential of more than 2 × 10 ~ 8t. Exploration practice has proved that glutenite body has the characteristics of large vertical thickness, rapid change of facies belt and lithology, large difference in physical properties of reservoir, and difficulty in describing seismic identification. Since 2014, in view of the multi-stage superimposition and heterogeneity of glutenite bodies in the Damintun Depression, the integrated joint research has been carried out from the aspects of reserve escalation, exploration well deployment quality and effective reservoir development, and exploration and establishment of Thick sandstone conglomerates, the division of complex lithologic reservoirs, and the prediction of effective reservoir seismicity of heterogeneous conglomerate rocks, we obtained a series of exploration technologies of glutenite bodies such as steep-bank sand control, Physical property control reservoir "geological understanding. Through the exploration of the glutenite body of Es4 in the steep slope of Damintun Depression, the well site deployment and reserves of the Ping An-Bao-An Fu Tun fan body were successfully completed. Four new wells were drilled and three wells were drilled for industrial oil flow ; The implementation of four old wells test oil, test oil in line with the rate of 80% or more; 2015 new oil area 35km ~ 2, reported reserves at all levels over 5000 × 10 ~ 4t.