摘要
提出了一种利用有限元反演套变地层岩石力学参数的分析方法。将地层、水泥环、套管作为研究对象,建立套变地层中套管变形与岩石力学参数的关系模型,利用多臂井径测井资料进行参数反演,结合摩尔库伦准则确保反演结果的唯一性。将该方法应用到中原油田卫95-86井建立相应的有限元模型进行反演计算,反演结果与实际相符。
Rock mechanic parameters in casing deformation formation are inverted by finite element analysis in this paper.The formation-cement mantle-casing system is studied.The relationship between casing deformation and rock mechanic parametersis is determined.Then the rock mechanic parameters are backward analyzed by using finite element model and MAC logging data.Mohr-Coulomb failure theory is applied in the calculation to make sure the uniqueness of the results.This method is used in Zhongyuan Oilfield.The results are coincident with the field data.
出处
《长江大学学报（自然科学版）》
CAS
2011年第6期54-57,7,共4页
Journal of Yangtze University(Natural Science Edition)
关键词
岩石力学参数
测井资料
套管变形
摩尔库伦准则
反演计算
rock mechanics parameter
logging data
casing deformation
Mohr-Coulomb
inversion calculation
