GO7-23-5206井组凝胶调剖设计及效果分析  

Design and Performance Analysis of Gel-type Profile Control Agent for GO7-23-5206 Well Group

作　　者：隋海庆 江厚顺[1] 黄榆杰 李品[1] 

机构地区：[1]长江大学石油工程学院,湖北武汉430100

出　　处：《当代化工》2016年第9期2176-2179,共4页Contemporary Chemical Industry

摘　　要：井间动态连通性是油藏动态分析的重要内容之一。孤东七区具有高孔高渗、强非均质、储层结构疏松、易出砂的特征。由于孤东油田水驱不均匀,使注入水在平面上形成水驱水流优势通道,从而有可能降低水的扫驱效率。针对这一严峻形势,先用流管图模拟出大孔道以及具有注采对应关系的注水井组。为后期调剖,选井选层提供重要的依据。并且通过连通性分析可以判别水流优势通道分布,最终达到提高采收率的目的。系统开展窜流通道定量化调剖技术提高采收率的研究。选定了一个具有代表性的典型注水井组,以凝胶为调剖剂,利用CMG软件,通过对凝胶的注入量和注入时间,从而确定注入速度,最后根据投入产出比,优选出最合适的方案,并在现场实施中获得良好的效果。The inter-well dynamic connection is one of the most essential contents for reservoir performance analysis.The 7th Gudong district is featured as large porosity,high permeability,intense homogeneity,loose reservoir structure and productive sand.As the heterogeneity of water flooding in Gudong oil field drove injected water to construct an advantaged passage at the platform,the water flooding efficiency may be lower to some extent.In order to combat the steep situation,the flow chart can be applied to the simulation of large pore passage and the water injection well group where there is certain relationship between injection and production.Also,it can provide essential proof for the profile modification,well and layer selection.Enhancing oil recovery could be achieved finally if the arrangement of advantaged passage for water flow was concluded by analyzing the probability of connection.The research on quantitative profile modification in streaming passage should be systematically carried out to enhance oil recovery.At first,representative water injection group was selected,and gel was used as profile modification agent.Then,CMG software was used to analyze the injection volume and time of gel to determine the injection rate.At last,according to input-output ratio,the best scheme was determined.

关 键 词：井间连通性 水驱不均匀 凝胶调剖剂 采收率 

分 类 号：TE327[石油与天然气工程—油气田开发工程]