无夹层底水油藏注水开发图版建立与应用  

Waterflooding Development Chart Establishment and Application for the Oil Reservoir without Interbed

作　　者：章威 龙明 周焱斌 张吉磊 欧阳雨薇 Zhang Wei;Long Ming;Zhou Yanbin;Zhang Jilei;Ouyang Yuwei(CNOOC(China)Tianjin Branch,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《特种油气藏》2020年第2期115-119,共5页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058001)。

摘　　要：针对无夹层底水油藏能否通过注水实现驱油的问题,基于渗流力学基本公式,考虑注入水到达底水所需的最长时间和最短时间,得到注入水实现驱油或者保压的理论公式,建立无夹层底水油藏注水开发的理论图版。研究结果表明:无夹层底水油藏注水开发要实现注水驱油,必须增大注采比、缩小注采井距。以渤海Q油田西区无夹层底水油藏为例,实际生产数据验证了该理论图版的可靠性。该研究成果对无夹层底水油藏的注水开发具有重要意义,为该类油藏合理注采比及注采井距的确定指明了方向。Basic seepage mechanism equations were used to derive and study the feasibility of waterflooding for the bottom-aquifer reservoir without interbed. The maximum and minimum times fir the injected water to reach the bottom-aquifer were considered to derive a theoretical equation for waterflooding or formation pressure maintenance and establish a theoretical waterflooding development chart for the bottom-aquifer reservoir without interbed. Research indicates that the injection-production ratio should be increased and the injection-production well spacing should be reduced to achieve oil displacement in the bottom-aquifer reservoir without interbed. The bottom-aquifer reservoir without interbed in the western Bohai Q Oilfield was taken to verify the reliability of this theoretical chart with field production data. This research is of great significance for the waterflooding development of bottom-aquifer reservoir without interbed and also could provide certain guidance for the optimization of injection-production ratio and well spacing in this kind of reservoir.

关 键 词：底水油藏 注水开发 无夹层 理论图版 驱油 渤海Q油田 

分 类 号：TE341[石油与天然气工程—油气田开发工程]