大庆深层气藏复杂结构井开发实践与认识
Petroleum Geology & Oilfield Development in Daqing（2018）
Abstract
大庆深层气藏地质条件极其复杂,储层物性差、以低孔特低渗透为主,采用直井开发单井产量低,储量动用程度低,有效开发难度大.为了探讨这类气藏的有效开发模式,自2005年起针对这类气藏陆续开展了复杂结构井开发试验,通过十余年的探索研究,创建了多种井位优化设计方法,如今,复杂结构井已遍布深层气藏各开发井区,应用规模在逐年扩大;已从单一的火山岩储层扩展到致密砂砾岩和砾岩储层;已取得了明显的增产效果.开发实践证实复杂结构井已成为提高这类气藏单井产量和储量动用程度、新区快速上产、老区深度挖潜部署及实现气藏经济有效开发的主体井型.
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Key words
deep gas reservoir,volcanic rock,conglomerate and sand,conglomerate reservoir,complex structure well,development effect and understanding
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