特高含水期油田水驱特征曲线优化研究

发布时间：2018-04-29 23:44

本文选题：水驱特征曲线 + 特高含水期　；参考：《特种油气藏》2017年05期

【摘要】：油田进入高含水期后,水驱特征曲线偏离直线段出现上翘,从而造成最终可采储量预测值偏高的问题。为此,在三次多项式拟合的半对数相渗关系表达式的基础上,对水驱特征曲线进行优化,使优化后的水驱特征曲线能更符合油田的实际生产情况。分别应用优化后的水驱特征曲线和两段直线法对D油田某区块进行最终可采出量预测,并与用Arps递减曲线法获得的结果进行对比。结果表明,优化后的水驱特征曲线和两段直线法所预测出的可采储量结果与Arps递减曲线法所获取的结果的相对误差分别为0.69%和5.83%,表明优化后的水驱特征曲线适用性更好,准确性更高,且可以简单快速地预测出高含水期油田的最终可采储量。该研究对于油田开发后期开发方案的调整具有一定的指导意义。
[Abstract]:After the oilfield enters the high water cut period, the water drive characteristic curve deviates from the straight line section to appear the upwardness, thus causes the final recoverable reserve forecast value to be on the high side the question. Therefore, on the basis of the expression of semi-logarithmic phase and permeability relation fitted by cubic polynomial, the characteristic curve of water drive is optimized, so that the optimized characteristic curve of water drive can be more in line with the actual production situation of oil field. The water drive characteristic curve after optimization and the two section straight line method are used to predict the final recoverable rate of a block in D oilfield, and the results obtained by Arps decline curve method are compared. The results show that the relative errors of the recoverable reserves predicted by the optimized water drive characteristic curve and the two-segment straight line method are 0.69% and 5.83%, respectively, which indicate that the optimized water drive characteristic curve is more suitable. The accuracy is higher and the final recoverable reserves of high water cut oilfield can be predicted easily and quickly. This research has certain guiding significance for the adjustment of oil field development plan in the later stage of development.
【作者单位】：中国石油勘探开发研究院;中国石油大学(北京);
【基金】：国家科技重大专项“高含水油田提高采收率新技术”(三期)(2016ZX05010-003) 中国石油天然气股份有限公司专项“高/特高含水油田改善水驱效果关键技术”(2016B-1202)
【分类号】：TE357.6

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