Fracturing Pressure in Oil/Gas Well Drilling
作者: Li Bo
刊名: International Journal of Civil Engineering and Environmental Science, 2015, Vol.3 (1), pp.42-49
来源数据库: Cayley Nielson Press
原始语种摘要: During oil and gas well drilling, when the drilling fluid density is too high, not only tensile fracturing but also shear fracturing may occur on the wellbore.The possible fracturing modes and corresponding calculation formulas of fracturing pressure were present.Moreover, the influence of the magnitude and non-uniformity of in-situ stress, the pore pressure, and the formation strength on fracturing mode was quantitatively analyzed.The results showed that: the risk of shear fracturing was higher with small non-uniformity of in-situ stress; when the horizontal stress was small, shear fracturing and tensile fracturing both probably happened, and a higher in-situ stress leaded to less probability of tensile fracturing; the potential of tensile fracturing increased with the increasing of...
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  • fracturing 断裂酌
  • tensile 拉的
  • drilling 钻进
  • uniformity 均匀性
  • calculation 计算
  • corresponding 对应的
  • formation 建造
  • higher 
  • strength 强度
  • influence 影响