大庆油田杏北开发区聚驱增油高效期预测

Prediction of enhanced recovery by polymer flooding in Xingbei development zone of Daqing oilfield

建立大庆油田杏北开发区聚合物驱油(聚驱)不同见效期及单井产量拟合的数学模型,分析聚驱增油变化规律.通过误差校正,得到产油量随时间变化的拟合公式.结果表明:单井产量拟合结果与实际结果吻合较好;聚驱累计产油量与油层的有效厚度、孔隙度、渗透率呈递增关系,与含水饱和度呈递减关系.

A mathematical models for the match of the effects of polymer flooding at different periods and the single well production have been established for Xingbei development zone of Daqing oilfield.The rules for enhanced recovery by polymer flooding have been analyzed.Through the correction of the errors,the matching formula for the production has been derived.Results show that the single well matching is in accordance with the actual results.The polymer flooding recovery increase is in right proportion to the thickness of the reservoir,porosity and permeability,and in reverse proportion to water saturation.