考虑无效注水的特低渗透油藏合理注采比研究——以鄂尔多斯盆地坪北油田N区为例  

A Study on the Rational Injection-Production Ratio Considering Ineffective Waterflooding in Ultra-Low Permeability Reservoirs: A Case Study of the N Area in the Pingbei Oilfield, Ordos Basin

作　　者：付云辉 FU Yunhui(Research Institute of Exploration and Production,Sinopec Jianghan Oilfield Company,Wuhan,Hubei 430223,China)

机构地区：[1]中石化江汉油田分公司勘探开发研究院,湖北武汉430223

出　　处：《江汉石油职工大学学报》2023年第4期8-10,共3页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：针对特低渗油藏高注采比与地层压力下降的矛盾,在分析无效注水原因的基础上,通过物质平衡原理确定无效注水量,并以此建立考虑无效注水的油藏合理注水量和合理注采比计算方法。合理的注采比对开发到中后期油田的控水稳油具有重要意义。In ultra-low permeability reservoirs,the conflicting relationship between a high injection-production ratio and declining reservoir pressure poses a challenge.This study addresses this issue by analyzing the causes of ineffective waterflooding and applying the principle of material balance to determine the volume of ineffective water injected.Subsequently,a calculation method is developed to determine the reasonable injection and production rates,accounting for the impact of ineffective waterflooding.Achieving a rational injection-production ratio holds paramount significance for water control and stable oil production during the middle and late stages of oilfield development.

关 键 词：特低渗油藏 合理注采比 无效注水 物质平衡法 

分 类 号：TE348[石油与天然气工程—油气田开发工程]