基于驱替单元的水驱油藏动用状况分类评价方法  

Classification and evaluation method of water flooded reservoir producing performance based on displacement units

作　　者：司睿 石成方[1] 王英圣 石为为[3] 钱其豪[1] 吴桐 SI Rui;SHI Chengfang;WANG Yingsheng;SHI Weiwei;QIAN Qihao;WU Tong(Research Institute of Petroleum Exploration&Development,Beijing 100083,China;Guangzhou Marine Geological Survey,Guangzhou 510075,China;Oil and Gas Resources Department of China Huayou Group Co Ltd,Beijing 100020,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]广州海洋地质调查局,广东广州510075 [3]中国华油集团油气资源事业部,北京100020

出　　处：《大庆石油地质与开发》2023年第1期73-82,共10页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项“优势渗流通道识别与表征及控制无效循环技术”(2016ZX05010-003)。

摘　　要：针对油田进入特高含水后期阶段,剩余油高度分散,无效循环不断加剧,剩余油和无效循环均赋存于“井间层内”的问题,无论是挖掘剩余油还是治理无效循环,水驱开发调整都必须聚焦于“井间层内”,不断向精细化方向发展。为了精细分析和量化评价水驱油藏动用状况,提出了驱替单元是最小可控单元的概念,分析了驱替单元的5个控制因素,明确了驱替单元与其所属领地的关系。通过研究将含水率和采出程度作为驱替单元分类评价的关键指标,应用含水率和采出程度建立了分类评价标准,并且在数值模拟计算结果的基础上,对每个驱替单元进行分类评价,形成了基于驱替单元的水驱油藏动用状况分类评价方法。应用该方法对实际油藏L区块进行了评价,并对具体井别提出了调整措施,评价结果可有效指导每个最小可控单元注水、堵水、增注、调剖等控制调整措施的实施。As oilfield enters the late stage of ultra-high water cut,remaining oil is highly dispersed with continuously serious invalid circulation.Both remaining oil and invalid circulation are problems of“interwell and innerlayer”.Development adjustments for both problems must focus on“interwell and innerlayer”and continuously develop in the direction of refinement.For the purpose of fine analysis and quantitative evaluation of reservoir producing performance,the concept that displacement unit is the smallest controllable unit is proposed.5 control factors of displacement units are analyzed,and relationship between displacement units and their territories are determined.Water cut and recovery degree are determined as key indexes for classification and evaluation of displacement units and are used to establish classification and evaluation criteria,and each displacement unit is classified and evaluated based on numerical simulation calculation,thus forming classification and evaluation method for producing performance of water flooded reservoirs based on displacement units.This method is applied to evaluate Block L of real reservoir,and adjustment stimulations are proposed for specific wells.The evaluation results effectively guide the implementation of control and adjustment of water injection,water plugging,injection increase,and profile control for individual minimum controllable unit.

关 键 词：驱替单元 最小可控单元 水驱油藏 评价方法 调整措施 

分 类 号：TE341[石油与天然气工程—油气田开发工程]