KS油田高含水后期调剖堵水选井  

Selection of Wells for Profile Control and Water Plugging in Late High-Water Cut Stage in KS Oilfield

作　　者：王桂芳 王硕亮[2] 许学健 雷燕 康波 WANG Guifang;WANG Shuoliang;XU Xuejian;LEI Yan;KANG Bo(Research Institute of Exploration and Development,Tuha Oilfield Company,PetroChina,Hami,Xinjiang 839009,China;School of Energy,China University of Geosciences,Beijing 100083,China)

机构地区：[1]中国石油吐哈油田分公司勘探开发研究院,新疆哈密839009 [2]中国地质大学能源学院,北京100083

出　　处：《新疆石油地质》2022年第1期122-126,共5页Xinjiang Petroleum Geology

摘　　要：KS油田开发进入高含水期后,注水井调剖是常用的稳油控水措施,但是在选井决策方面,存在指标界限不易选择、权重数值不易量化等问题。针对上述问题,筛选出能够较准确反映水窜特征的单井指标、井间指标和静态指标,构建基于多项式核函数、径向基核函数和Sigmoid核函数的新型核函数,并基于函数形式优化模糊聚类方法,提高拟合精度和预测精度。提出适合KS油田高含水后期调剖选井模糊聚类决策方法,提高调剖选井样本集和检测集的识别率。将新型注水井调剖选井决策方法应用于KS油田,从22口注水井中优选出3口进行调剖,增油降水效果显著。In the late high-water cut stage in KS oilfield, profile control in water injection wells is a common measure to stabilize oil production while controlling water production. However, it is difficult to decide index limits and quantify weight values when selecting water wells.This study screened single-well, interwell and static indicators that can accurately reflect the characteristics of water channeling, developed a new kernel function based on polynomial kernel function, radial basis kernel function and Sigmoid kernel function, and optimized the fuzzy clustering method to improve the accuracy of fitting and prediction. Then a special fuzzy clustering method was proposed for selecting wells for profile control in the late high water-cut stage in KS oilfield. It can improve the recognition rates of sample set and detected set for selected wells. The new decision-making method for selecting wells for profile control has been applied to KS oilfield, and 3 wells were selected from 22 water wells for profile control. Significant oil increasing and water reducing effects have been achieved.

关 键 词：KS油田 砂岩油藏 高含水期 注水井调剖 模糊聚类方法 选井决策 窜流通道 稳油控水 核函数 

分 类 号：TE357[石油与天然气工程—油气田开发工程]