柴达木盆地游园沟油田中浅层油藏四性关系研究

4-PROPERTY RELATIONSHIP STUDY OF MIDDLE-SHALLOWRESE RVOIR IN YOUYUANGOU OIL FIELD

游园沟油田中浅层N1油藏基本为一三角洲前缘亚相沉积体系,储层岩性主要以细砂岩和粉砂岩为主,含砾细砂岩和泥质粉砂岩次之;储层岩相、岩性、物性的差异控制了油藏的富集程度,在岩性、岩相相同的情况下,含油性主要取决于物性的好坏。通过对测井、测试、岩心分析化验资料及水分析资料等的整理及储层四性关系的研究,建立了测井资料处理解释模型,确定了N1油藏有效厚度划分标准及油气水解释标准,提高了油气水解释的符合率,对相邻构造的油气水解释也有重要指导意义。

N1 hydrocarbon reservoir of Youyuangou oil field is delta front subfaeies. It＇s reservoir lithology consist mainly of fine sandstone and siltstone, secondly of pebbled fine sandstone and pelitie siltstone. The different of lithofacies, lithology and physical property of reservoirs govern the oil/gas accumulation level in the hydrocarbon reservoirs. Under the same conditions on lithology and lithofaeies, the oil-bearing saturation depends on the different of physical property. With the analysis of the logging data, the production testing data, the core data and the mater data, the test studied 4 property （lithology, electrical property, petro physical property and oil-bearing property ）relationship of the reservoirs, established the pattern of well logging data processing and interpretation, determined the effective thickness deriding standards of the hydrocarbon reservoirs and the well logging interpretion standards, The studies and the determination of the parameters improved the coincidence rate of the oil/gas-bearing formations for interpretion, and have important guiding significance for the well logging interpretation of adjacent structures.