Selection of failure criteria for estimation of safe mud weights in a tight gas sand reservoir
作者: Shariq AbbasiRanjeet Kumar SinghKumar Hemant SinghTN Singh
作者单位: 1Indian Institute of Technology Bombay, Mumbai, India
2BG Exploration and Production India Limited, Mumbai, India
刊名: International Journal of Rock Mechanics and Mining Sciences, 2018, Vol.107 , pp.261-270
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijrmms.2018.04.051
关键词: Safe mud weightsWellbore stabilityFailure criteriaTight gas sand reservoir
原始语种摘要: Abstract(#br)In an undisturbed state, a stress field present in the earth consists of virgin stress in the rock. A change in this stress occurs due to drilling the borehole and disturbing the original stress by either introducing drilling fluids or by getting reservoir flow in the borehole. This change in stress leads to a classical problem of well bore instability. To resolve wellbore instability, evaluation of rock mechanical properties and in-situ stresses is essential. The output of this study is evaluation of safe mud weights which is critical to safe drilling. If the mud weight used for drilling is higher than those predicted by the failure criteria, the mud percolates into the formation, causing tensile failure (fracture stress) which induces fluid losses. Conversely, the lower mud...
全文获取路径: Elsevier  (合作)

  • criteria 准则
  • weights 法码
  • failure 破坏
  • values 价值观
  • drilling 钻进
  • properties 道具
  • result 成果
  • equation 方程
  • higher 
  • stress 应力