中国陆上油田聚合物驱油技术适应性评价方法研究

根据我国陆上具有聚合物驱油潜力的油田特点,分析了在不同的油藏条件下聚合物驱油参数对注采井距、聚合物用量和油价的要求.考虑到钻井、地面建设及化学剂的投资对采收率指标的影响,根据标准测评油价,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,建立起聚合物驱油技术的油藏适应性经济评价模型.根据采收率指标和每吨聚合物增油量指标,对聚合物用量进行了综合优化,为聚合物驱油方案评价提供了一种简易可靠的方法.

Evaluation method for adaptability of polymer flooding technology in the onshore oilfield of China

Considering the ability of oil reservoir with polymer flooding project in China, the effects of oil-displacement parameters on the distance between water injecting well and production well, polymer dosage, oil price and aggregate investments of drilling, surface construction and chemical agent in different reservoir were analyzed. On the basis of the balance principle, the aggregate investment can be reduced to the needed increasing oil production under the standard oil price. Then, the limit of needed enhanced oil recovery can be obtained. A technical and economic evaluation model was established on the reservoir adaptability of polymer flooding technology. The polymer dosage was also optimized by the indexes of recovery factor and oil production per ton polymer was raised. This method is simple and credible for evaluating the development plan of polymer flooding project.