论文部分内容阅读
在 MCNP的基础上 ,开发了井壁超热中子时间谱测井蒙特卡罗 (Monte Carlo)模拟软件包 .裸眼井、井眼里无下井仪器、淡水饱和砂岩地层、井眼注淡水 ;油饱和砂岩地层、井眼注油 ;油饱和砂岩地层、井眼注淡水 ;淡水饱和灰岩地层、井眼注淡水与淡水饱和白云岩地层、井眼注淡水 ,及裸眼井、井眼里有下井仪器、淡水饱和砂岩地层、井眼注淡水等条件下 ,计算井壁超热中子时间谱随孔隙度的变化 ,同时可得到井壁超热中子总通量随孔隙度的变化 ,结果证明井壁超热中子时间谱测井或井壁超热中子测井是确定地层孔隙度最有效的方法 .在此基础上 ,再研究井壁超热中子时间谱测井仪或井壁超热中子测井仪的工程参数 .
Based on the MCNP, a Monte Carlo simulating software package for borehole hyperthermonic neutron time-log spectroscopy was developed. The open-hole, no-downhole instrument in the borehole, freshwater saturated sandstone formation and borehole injection of freshwater Saturated sandstone formation, wellbore oiling; oil-saturated sandstone formation, borehole injection of freshwater; freshwater saturated limestone formation, borehole injection of freshwater and freshwater dolostone formation, injection of freshwater into well borehole, , Freshwater saturated sandstone formation and freshwater injection from wellbore, the time history of the superheated neutron in borehole wall can be calculated with the change of porosity, and the total flux of the superheated neutron in the borehole wall can be calculated as a function of porosity. As a result, The wall hyperthermia neutron time spectrum well logging or well wall hyperthermia neutron logging is the most effective method to determine the porosity of the formation.On the basis of this, Engineering Parameters of Thermal Neutron Logging Tool.