摘要
用常规测井资料计算地应力的优点是成本较低,资料容易获取,且能获得连续的地应力剖面。其中岩石力学参数的计算是非常重要的环节,这里通过利用常规测井的纵波时差,拟合出横波时差,进而计算出泊松比。特别是在岩石的抗压强度参数的计算中,提出了一个综合考虑泥质含量和纵波波阻抗(ρVp)的新的拟合模型。在地应力计算中还有一个非常重要的问题,即构造应力的计算,本文利用FM I成像测井资料和水力压裂资料相结合,对构造应力进行了计算,进而选择了适当的地应力计算模式,计算出川中磨溪气田25口井的地应力剖面。
The calculation of formation stress by conventional well logging data is of the advantages of low cost,easy to access data and acquire successive formation section of formation stress.The paper introduces the methods of interval transit time fitting of S-wave with P-wave and Poisson ratio calculation.A new model for fitting compressive resistance by integrating clay content and P-wave impedance is put forward.The paper also calculates tectonic stress by FMI logging and hydrofracturing data.Finally,the formation stress sections of twenty five wells are calculated with the appropriate calculating model.
出处
《物探化探计算技术》
CAS
CSCD
2007年第3期200-204,178,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家财政部矿产资源保护项目(KB2000-07-01)
关键词
地应力
常规测井
FMI
岩石力学参数
formation stress
conventional well logging
FMI
rock mechanics parameters
