应用模糊综合评判方法识别水驱优势渗流通道井和层

在油田注水开发过程中,由于储层平面非均质性、流体非均质性及开发条件的影响,在平面上会出现注入水突进的情况.注水井中的注入水向不同方向驱油,推进往往是不均匀的,一般总有一个方向突进最快,且经过长期水洗之后,这个方向有可能发展成大孔道,形成水驱优势渗流通道.建立应用模糊综合评判方法识别水驱优势渗流通道井和层的数学模型,应用水驱优势渗流通道分析判定软件,对河南双河油田ⅦⅣ油组主力油层(Ⅷ1、Ⅳ1、4、5)274口井进行了实例计算,识别出水驱优势渗流通道油水井共97口,其中水井43口,油井54口,识别出14个水驱优势渗流层位.通过油藏工程和数值模拟方法进行了验证,表明运用综合评判方法识别水驱优势渗流通道井和层是一种客观有效的方法,评价方法计算方便,易于操作和推广.

Appling Fuzzy Comprehensive Judge Method to Identify Deficient Returing Well and Lay

During the field waterflood development process,it will appear the advancing situation of flood water,which is caused by the effects of heterogeneities of reservoir plane and fluid and development condition.When we inject water to oil displacement on different directions in water injection well,the advancing is always heterogenetic.Generally,there is one direction's advancing that is the fastest.Maybe,it will be developed to be "a large pore channel" after long-term watering,which can form waterflooding advantage seepage paths,we set up a mathematical model that appling fuzzy comprehensive judge method to identify well and lay of waterflooding advantage seepage paths.Through application of waterflooding advantage seepage paths determination software,we calculated 274 wells of Henan Oilfield vm IXoil group SHUANGHE main reservoir(Ⅷ,Ⅸ 1,4,5),and identified 97 waterflooding advantage seepage paths oil and water wells,of which 43 water wells and 54 oil wells,14 waterflooding advantage seepage layers.Through validation of reservoir engineering and numerical simulation method,it is shown that it is a objective and effective method which is convenience to calculating and easy to manipulate and popularize.