摘要
在泥页岩地层井壁稳定分析中,将泥页岩视为孔隙介质,研究了孔隙压力变化规律及井周有效应力状态,根据多孔热弹性理论,给出泥页岩地层耦合温压影响下直井周有效应力计算模式,结合地层破坏准则分析了泥页岩地层井壁失稳机理。
Stress distribution around wellbore were calculated according to thermoporoelastic theory, combined with formation failure criteria, borehole collapse and fracturing pressure calculation modes were presented considering formation temperature variation, which were helpful for high temperature well safe mud density window design.
出处
《内蒙古石油化工》
CAS
2008年第8期129-132,共4页
Inner Mongolia Petrochemical Industry
