通过对白马崾先地区延长组长4+5油藏烃源岩的分布、构造特征、有利相带、低压等因素的系统分析研究,认为烃源岩是形成油气藏的物质基础;局部隆基构造是油藏形成的前提;水下分流河道是该区长4+5油藏的储集体;上倾方向的岩性遮挡条件是油气保存和富集的保证;低压是油气藏形成的重要条件。在此基础上划分了5个有利区带:GG27井区、GG70井区、GG02井区、GG13井区、GG81井区等。 By systematically analyzing the distribution, structural characteristics, favorable facies belts and low pressure of source rocks of 4 + 5 reservoir in the head of the Baimazhai area, it is considered that the source rocks are the material basis for the formation of oil and gas reservoirs. The local Longji structure Is the prerequisite for reservoir formation. The underwater distributary channel is the reservoir of 4 + 5 reservoirs in this area. The lithologic occlusion condition in the updip direction is the guarantee of hydrocarbon preservation and enrichment. Low pressure is an important condition for the formation of oil and gas reservoirs. On this basis, five favorable zones are divided: GG27 well, GG70 well, GG02 well, GG13 well and GG81 well.