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为了提高福山凹陷流沙港组三段有利区域的预测精度,针对研究区目前地震资料品质差但钻井和测井资料丰富的现状,利用岩心、测井等资料,对流沙港组三段的岩性、物性、电性和含油性四性特征及其相互关系进行了研究。结果表明:研究区流沙港组三段为中孔中低渗透储层,油气的富集程度主要受储层岩性和物性的影响;选取自然伽马、声波时差和电阻率等电性资料,建立岩性、物性及含油性的测井解释模型,并将测井解释孔隙度和渗透率与岩心分析孔隙度和渗透率分别进行对比验证,测井解释值与岩心分析值吻合较好,即所建模型适用于福山凹陷流沙港组三段。最后确定了福山凹陷流沙港组三段储层有效厚度下限标准:物性下限孔隙度为6.3%,渗透率为0.202×10-3μm2,电性下限电阻率为10Ω·m,声波时差为230μs/m。
In order to improve the prediction accuracy of the three favorable sections of the Liushagang Formation in the Fukuya Depression, according to the current poor seismic data in the study area but rich in drilling and well logging data, the lithology , Physical properties, electrical properties and oleaginous four characteristics and their relationship were studied. The results show that the third section of the Liushahantang Formation in the study area is a middle-low permeability medium-porosity reservoir, and the enrichment degree of oil and gas is mainly affected by the lithology and physical properties of the reservoir. Natural electrical gamma-ray, acoustic time- Logging interpretation models of lithology, physical property and oiliness are established. Logging interpretation of porosity and permeability are compared with core analysis porosity and permeability, respectively, and logging interpretation values are in good agreement with core analysis values, that is, The model is suitable for the Fukuya Sag Liusha Port Group three sections. Finally, the lower limit of reservoir effective thickness of the third member of the Liushagang Formation in the Fukuya Sag was determined: the lower limit of physical property porosity is 6.3%, the permeability is 0.202 × 10-3μm2, the lower limit of electrical resistivity is 10Ω · m, the acoustic time difference is 230μs / m .