摘要
高能气体微压裂技术是套管完井油气储层增产的重要手段,进行高能气体微压裂模拟试验对于探究其增产机理和优化施工工艺具有重要意义。本文充分考虑套管完井高能气体冲击破岩过程中的瞬态性和复杂性,通过在直径5m高1m的钢管两端加固圆柱水泥靶中心安装140mm铝质套管分别装填1.5kg、2.0kg药剂进行地面模拟井下压裂试验。研究结果表明:套管完井固体火药高能气体微压裂技术可在地层中产生2~4条径向裂缝;压裂后套管性能略有下降,但对后续生产无影响;裂缝条数与峰值压力和升压速率有关,峰值压力越大,裂缝条数越多。该研究成果对于高能气体微压裂现场施工具有一定的指导意义。
High Energy Gas Fracturing of Casing completion technology is an important mean for oil and gas reservoir production.It is essential to study High Energy Gas Fracturing of Casing completion technology by simulation experiment,which can explore the mechanism of production increasing,fracturing sand control capability changes and optimize the construction process.This paper considered the transient and complex process of rock burst when fracturing.The results showed that high energy gas process using cement target which is applied in confining pressure with solid propellant,the influence of fracture morphology and the fracturing process fracturing of casing completion technology can produce 2~4 radial fractures,but it has no effect on subsequent production.The number of fractures is related to the peak pressure and pressure rising rate,the higher the peak pressure,the more the number of fractures.The research results have a certain guiding significance for the construction of high energy gas fracturing casing completion technology.
作者
冯雷
刘立砖
邓拓
李春
范志坤
Feng Lei;Liu Lizhuan;Deng Tuo;Li Chun;Fan Zhikun(Engineering and Technology Branch,CNOOC Energy Technology ＆ Services Limited,Tianjin 300457,China;The Unconventional Oil and Gas Branch of CNPC,Jinzhong,Shanxi 045400,China)
出处
《非常规油气》
2018年第4期70-74,共5页
Unconventional Oil & Gas
基金
国家科技重大专项“‘三气’合采钻完井技术与储层保护”(2016ZX05066002)资助
关键词
高能气体
微压裂
套管完井
室内试验
固体火药
high energy gas
fracturing
cased hole completion
simulation experiment
solid propellant
