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针对海上油田开发评价阶段资料有限、储层非均质性严重等特点,导致油田开发人员对油藏认识程度存在很大的不确定性。在分析油田开发不确定性问题来源的基础上,以河流相油田开发过程中的地层对比、河流相模拟等典型不确定性问题为例,应用随机地质建模技术、地质统计学等方法,分析储层不确定性参数的变化规律和范围,开展地质储量分布概率统计及储层模型不确定性研究,通过海上油田的实际开发研究,可以有效地认识储层的不确定性,降低油田开发决策的风险。
In view of the limited data and the serious heterogeneity of reservoirs during the evaluation stage of offshore oilfield development, there is great uncertainty about the degree of understanding of oil reservoirs for oilfield developers. Based on the analysis of the source of the uncertainty of oilfield development and taking the typical uncertainties such as stratum contrast and river facies simulation in the process of river-phase oilfield development as an example, this paper uses stochastic geological modeling techniques and geostatistics methods to analyze The variation regularity and scope of reservoir uncertainty parameters, the probabilistic statistics of geological reserves distribution and the uncertainty of reservoir model are studied. The actual development and research of offshore oilfields can effectively recognize the reservoir uncertainty and reduce the oilfield development decision risks of.