摘要
松700井区超低渗油藏开发过程中主要问题是:注采对应率低,影响注水效率;注水强度低,并随时间推移呈下降趋势;油井见效速度慢,注水效果不明显;地层启动压力梯度高,造成注水井附近憋压;水淹具有方向性,平面波及系数低。分析问题产生的原因,并依据矿场实际生产数据,从注水时机、井网类型、井网密度、油水井数比、合理井距和注采压力系统等方面进行评价和优化;部分研究成果已在生产中得到应用,效果良好。
According to the ultra-low permeability of Song 700 well block,in the research the author analyses the reason of quick production declination,and establishes the evaluation and optimization of injection-production well pattern system. In this paper,well pattern adaptability are analyzed in many ways,and the adjusted water injection timing,the types of well pattern,well density,reasonable well spacing and injection-production pressure system are determined. This paper has important guiding significance for the evaluation and optimization of the injection-production well pattern system of ultra-low permeability oilfield.
出处
《重庆科技学院学报（自然科学版）》
CAS
2014年第6期73-78,共6页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家科技重大专项(2011ZX05038-001)
关键词
超低渗油田
注采系统
井网调整
评价方法
ultra-low permeability oilfield
injection-production system
well pattern adjustment
evaluation method
