摘要
我国低渗透油田经过长期注水开发,大部分的油田已进入高含水阶段,油田产量递减较快,单井产量低,传统的开发效果评价方法已不能准确地描述低渗透油田的开发状况。因此,本文运用各个指标对油田开发效果进行科学的评价,并通过数学模糊算法赋予各个指标不同的权重来综合评判油藏开发效果,并针对该油藏的地质特征完善了各个指标相关的权重,总结出一套适合该区块的理论系统,这为下一步开发政策的调整给出合理的理论依据,为保证油藏开采拥有最大采收率提供理论支持。
After long-term water injection development in China’s low-permeability oilfields,most of the oilfields have entered the stage of high water cut,the production of oil fields is decreasing rapidly,and the output of single wells is low.The traditional development effect evaluation method can not accurately describe the development status of low permeability oil fields.In this paper,various indicators were used to scientifically evaluate the effect of oilfield development,and the different weights of each index were obtained through mathematical fuzzy algorithm to comprehensively evaluate the reservoir development effect.Based on the geological features of low permeability reservoirs in W block of Daqing oilfield,the weights of each indicator were perfected.A theoretical system for evaluating the development effect of low-permeability sandstone reservoirs was put forward.This system can provide a reliable basis for determining the current development technology policy boundaries and judging the potential for tapping potentials,and is also of great significance for improving the ultimate recovery of reservoirs.
作者
王佳琦
邱淑新
王久星
邢瑶
WANG Jia-qi;QIU Shu-xin;WANG Jiu-xing;Xing Yao(Northeast Petroleum University,Daqing 163100,China;The fourth Oil Production Plant of Daqing Oilfield)
出处
《当代化工》
CAS
2020年第10期2260-2263,2267,共5页
Contemporary Chemical Industry
基金
中国石油科技创新基金(项目编号:2016D-5007-0212)
关键词
低渗透
开发效果评价
指标优选
数学模糊算法
Low permeability
Development effect evaluation
Index optimization
Mathematical fuzzy algorithm
