蒙特卡罗方法在核测井中的应用OA

Monte Carlo method has a wide range of applications in medicine,high energy physics,nuclear physics,accelerator physics,coupled neutron/photon/electron transport problems,etc.Commonly used Monte Carlo numerical simulation software includes Geant4(Europe),FLUKA(Europe),MCNP(USA),EGSnrc(Canada),SuperMC(China).The Monte Carlo numerical simulation model is established by tak-ing RET,a new generation residual oil and gas saturation logging instrument independently developed by China Oilfield Services Limited.Through the analysis of instrument measurement applicability range and sig-ma tailing phenomenon,it is believed that the lower limit of porosity of RET instrument in C/O mode of a certain oilfield in Indonesia is 18％,and sigma tailing is caused by lithology rather than pore gas content.Therefore,the application of Monte Carlo method in the field of nuclear logging is demonstrated.