【摘要】 利用地质、测井和地震等多种资料进行的综合研究表明,东濮凹陷桥口和新霍地区沙三段中发育轴向重力流水道沉积,它们主要由灰黑色块状泥岩与平行层理砂岩、块状层理砂岩、递变层理砂岩及合卵石砂岩构成,在垂向上组合成鲍玛序列的AE、BE、ACE、BCE和CE等。依据研究区轴向重力流水道沉积特征,将其划分成近源和远源水道、近源和远源水道侧源等4个微相,并描述了这4个微相的沉积特征,建立了沉积模式。油气勘探实践表明,重力流水道砂体是我国东部陆相断陷湖盆中重要的油气勘探新目标,它具有良好的储集物性,并含有丰富的油气。更多还原

【Abstract】 A study on the geological,logging and seismic data showedthat a deep water axial gravity flow deposit was developed in the third member of Shahejie formation in Oligocene of Dongpu depression.According to its sedimentary features,the deposit can be classified into four microfacies,i.e.proximal and distal channels,proximal and distal channel edges.Channel deposits are characterized by graded,massive,parallel bedding thick sandstone,and channel edges are thin ACE,CE sequences.Some deposit models are established in this paper.Exploration practice shows that the axial gravity flow channel sandbody is a good reservoir and is rich in oil and gas.The axial gravity flow deposit can be the future target of oil and gas exploration in the continental faolt-subsided lake basins in eastern China.更多还原