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为满足SEC准则储量评估要求,总结了大庆油田证实未开发储量特点,提出类比油藏的优选原则及建立方法。在区域分块前提下,以类比参数为基础,对低渗透油藏采收率影响因素进行了分析,认为渗透率是影响采收率的关键因素。应用回归法绘制了各区块不同油价下采收率与渗透率关系图版,为大庆油田SEC储量评估中采收率的确定提供了方法和依据。
In order to meet the requirements of SEC criterion reserves assessment, the characteristics of undeveloped reserves confirmed by Daqing Oilfield are summarized, and the preferred principles and establishment methods of analogue reservoirs are proposed. On the premise of regional block, based on the analogy parameters, the influencing factors of oil recovery in low permeability reservoirs are analyzed, and the permeability is the key factor affecting oil recovery. The relationship between the recovery rate and permeability of different oil price in each block was plotted by regression method, which provided a method and basis for the determination of recovery rate in SEC reserve assessment in Daqing Oilfield.