LC砂砾岩油藏出水类型及控水对策研究

Study on Produced Water Type and Countermeasures for Its Controlling in LG Glutenite Reservoir

LC油藏是我国西部新投入开发的砂砾岩油田,开发过程中出水现象普遍,已经成为制约产量的主要原因之一,油井控水是该油藏开发的技术难题之一。在油藏生产动态资料分析基础上,研究认为该油藏单井出水来源主要有4类,根据各种资料采用逐步排除法建立了出水来源多因素综合识别模式,利用该模式并结合生产数据开展了单井产水类型及变化特征研究,根据不同类型井的出水状况,通过深入分析出水机理和油藏出水分布规律,提出有效措施进行分类控水,现场应用取得良好效果。

LC Reservoir was a glutenite reservoir that has been newly put into development in west China.Water was widely produced in the development,it was one of the major reasons of constraining the production.Water control in oil wells was one of the main problems in the reservoir development.Based on the analysis of reservoir production performance data,study shows that the sources of single water production are divided into 4types.According to various data,the method of progressive exclusion is used to establish a multiple factor mode to recognize water production resources,combined with production data,the mode is used for studying the type of water production and its changing charatcteristics.Based on the situation of water production in various wells,and by analyzing the water production mechanism and water distribution rule in the reservoir,effective measures are proposed for classified water control.