一种改进的乙型水驱特征曲线研究及应用  

Research and Application of an Improved Type-B Water-Flooding Characteristic Curve

作　　者：谷建伟[1] 任燕龙 张以根[2] 崔文富[2] Gu Jianwei;Ren Yanlong;Zhang Yigen;Cui Wenfu(China University of Petroleum(East China),Qingdao,Shandong 266580,China;Sinopec Shengli Oilfield Branch Company,Dongying,Shandong 257015,China)

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中国石化胜利油田分公司,山东东营257015

出　　处：《特种油气藏》2020年第1期102-107,共6页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项“特高含水后期整装油田延长经济寿命期开发技术”（2016ZX05011-001）

摘　　要：针对特高含水开发阶段经典水驱特征曲线无法准确刻画水油比变化特征的问题,在重新改进油水相对渗透率表征形式的基础上,运用渗流力学理论和油藏工程方法推导了改进的乙型水驱特征公式,并给出了采出程度与水油比的变化关系式;采用最小二乘法和穷举法解决了多参数拟合困难的问题,实现了曲线的自动拟合。通过公开文献资料验证表明,新油水相对渗透率曲线表征方法更加准确,改进的乙型水驱曲线拟合精度更高,可较好地反映油田特高含水阶段水驱特征曲线的“上翘”特征,适用于特高含水阶段生产开发动态的预测。The classic waterflooding characteristic curve is limited in the characterization of water-oil ratio in the extra-high water-cut development stage.Based on the re-improving of oil-water relative curve characterization form,the seepage mechanics and reservoir engineering methods were used to derive a improved type-B waterflooding characteristic curve,which also provides the relationship between recovery degree and water-oil ratio.The least square and exhaustive methods were adopted to treat multi-variable fitting and realize the automatic curve fitting.According to the verification with published literature,the new oil-water relative permeability curve shows a favorable characterization.The improved type-B waterflooding characteristic curve shows a more accurate fitting performance,which could well characterize the“upward”of waterflooding characteristic curve in the extra-high water-cut development stage and is applicable for the production performance forecast in the ultra-high water-cut development stage.

关 键 词：特高含水期 油水相渗曲线 水驱特征曲线 采收率 胜坨油田 

分 类 号：TE312[石油与天然气工程—油气田开发工程]