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对聚合物驱油项目与三元复合驱油项目投资构成进行了对比,借鉴聚合物驱油项目聚合物用量的概念,对三元复合驱化学剂用量定义了“聚合物当量”概念。针对大庆油田具有三元复合驱潜力的储量,分析了在不同的油藏条件下复合驱项目对注采井距、聚合物当量和油价等的要求。考虑到项目投资对采收率指标的影响,测评了油价,按照收支平衡原则,将总投资折算为需要的增油量下限值,进而确定出需要提高的采收率下限,建立了复合驱油技术的油藏适应性经济评价模型。该模型可用于评价复合驱项目方案。
The composition of polymer flooding project and ASP flooding project are compared. Using the concept of polymer flooding in polymer flooding project, the concept of “polymer equivalent” is defined for the dosage of ASP flooding agent. In view of the reserve with potential of ASP flooding in Daqing Oilfield, the requirements for well spacing, polymer equivalent and oil price under different reservoir conditions are analyzed. Taking into account the impact of project investment on the recovery index, the oil price was evaluated and the total investment was converted to the required lower limit of oil yield according to the principle of balance of payments, so as to determine the lower limit of recovery rate that needs to be enhanced and establish the compound Reservoir adaptive economic evaluation model of oil displacement technology. The model can be used to evaluate composite flooding project.