摘要
为了解决胜利油田窄屋脊断块油藏人工边水驱精细二次开发的“三高协同效应”的问题,通过综合分析胜利油田窄屋脊断块油藏的地质特征和开发特征,在明确此类油藏二次开发前的剩余油分布特征及成因的基础上,从单井经济极限液量和地层压力恢复能力两个方面,分析了此类油藏二次开发前的开发潜力。通过油藏数值模拟和油藏工程方法,从地质因素、流体因素、开发因素三个方面筛选12项主控因素,提出了窄屋脊断块油藏人工边水驱开发主控因素敏感性的定量分析方法和判定原则,给出了窄屋脊断块油藏人工边水驱筛选标准。研究结果表明:窄屋脊断块油藏人工边水驱开发的极敏感因素主要为地质因素和流体因素,开发因素多为次敏感-微敏感因素,水体大小是不敏感因素;适合人工边水驱开发的窄屋脊断块油藏的筛选条件包含三类:满足水驱要求为基本条件,含油条带宽度和地层倾角等开发技术界限为必备条件,其他有利于开发因素为选择性条件;该筛选标准应用于胜利油田窄屋脊断块油藏取得了较好效果。可见本文建立的主控因素敏感性定量分析方法和窄屋脊断块油藏人工边水驱筛选标准,能为窄屋脊断块油藏人工边水驱高效开发提供决策依据和理论指导。
In order to solve the problem of“three high synergistic effects”in artificial edge water flooding during the fine secondary development of narrow ridge block reservoirs in Shengli oilfield,the geological and development characteristics of narrow roof block reservoirs were used to comprehensively analyze and to identify the distribution characteristics and genesis of the remaining oil before the secondary development.Both the economic limit fluid volume of single well and the recovery capacity of formation pressure were used to analyzed the development potential of this type reservoir before the secondary development.According to three aspect factors of geological characteristics,fluid properties and development parameters,12 main controlling factors were selected to study the sensitivity of main controlling factors in artificial edge water flooding.The quantitative analysis method and determination principle of the sensitivity of main controlling factors in artificial edge water flooding were proposed.And the selection criteria of artificial edge water flooding in narrow ridge block reservoirs were given.Results show that the most sensitive factors mainly are geological factors and fluid factors,the development factors mostly are sub-sensitive and micro-sensitive factors,and the size of water body is the insensitive factor.The selection criteria of artificial edge water flooding in narrow ridge block reservoirs contains three type conditions:The basic condition is to meet the requirements of water flooding,the necessary condition is to meet the technical limits of oil-bearing band width and formation dip,and the other favorable factors are the selective conditions.The development practices of Shengli oilfield have proved that the selection criteria are helpful to implement artificial edge water flooding in narrow ridge block reservoirs.It is concluded that the quantitative analysis method of main controlling factors sensitivity and the selection criteria of artificial edge water flooding in narrow ridge block
作者
刘维霞
LIU Wei-xia(Research Institute of Petroleum Exploration and Development,Sinopec Shengli Oilfield Company,Dongying 257015,China)
出处
《科学技术与工程》
北大核心
2020年第7期2659-2666,共8页
Science Technology and Engineering
基金
十三五国家科技重大专项(2016ZX0511-002)
中石化重大项目(P16036)。
关键词
窄屋脊断块油藏
人工边水驱
敏感性分析
敏感程度判定
筛选标准
narrow ridge block reservoir
artificial edge water flooding
sensitivity analysis
sensitivity determination
selection criteria
