关于甲型、乙型、丙型、丁型水驱特征曲线合理选型的正确认识及应用  

Correct Understanding and Application of Reasonable Selection of Waterflooding Characteristic Curve of Type A,B,C and D

作　　者：张宏友 王月杰 王美楠 ZHANG Hong-you;WANG Yue-jie;WANG Mei-nan(CNOOC China Limited Tianjin Branch,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《数学的实践与认识》2021年第20期82-92,共11页Mathematics in Practice and Theory

基　　金：“十三五”国家科技重大专项(2016ZX05058001)。

摘　　要：甲型、乙型、丙型、丁型水驱特征曲线是预测油田可采储量最常用方法,然而对于同一油田,不同水驱特征曲线预测结果差异较大,因此水驱特征曲线合理选型至关重要.回顾陈元千教授关于水驱特征曲线理论推导过程,发现4种水驱特征曲线渗流力学理论基础是相同的,但中高含水期存在不同假设条件.在此基础上,进一步研究了假设条件对4种水驱特征曲线含水上升规律的影响,结果表明,由于假设条件的不同,使得不同水驱特征曲线表征含水上升规律各不相同,如甲型水驱特征曲线表征“S”型含水上升规律、乙型水驱特征曲线表征“凸”型含水上升规律.据此,提出一种根据油田实际含水上升规律类型来指导水驱特征曲线选型的方法.通过对BZA、LD-A、LD-B油田的实例应用,表明该方法可以用来指导矿场实际油田水驱特征曲线的合理选型.The waterflooding characteristic curves of type A,B,C and D are the most commonly used methods for predicting recoverable reserves of oil fields.However,for the same oil field,the prediction results of different waterflooding characteristic curves are quite different,so the reasonable selection of waterflooding characteristic curves is very important.Reviewing the theoretical derivation process of waterflooding characteristic curve by Professor Chen Yuanqian,it is found that the theoretical basis of seepage mechanics of four kinds of waterflooding characteristic curve is the same,but there are diferent assumptions in the middle and high water cut stage.On this basis,the influence of hypothesis conditions on the water cut rising rule of four kinds of water drive characteristic curves is further studied.The results show that the water cut rising rule of different waterflooding e characteristic curves is different because of different hypothesis conditions,such as the w waterflooding characteristic curve of type A represents the water cut rising rule of type "S" and the waterflooding characteristic curve of type B represents the water cut rising rule of type "convex".According to this,a method is put forward to guide the selection of water drive characteristic curve according to the type of water cut rising rule in oil field.Through the application of BZ-A,LD-A and LD-B oilfields,it shows that this method can be used to guide the reasonable selection of waterflooding characteristic curve in the actual oilfield.

关 键 词：水驱特征曲线 含水上升规律 合理选型 可采储量 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]