摘要
本文研究中子-中子测井的数值模拟方法。应用多群P_1近似对中子输运方程数值求解。并研究其在中子测井中的应用。在国内首次实现了中子-中子测井问题的数值正演,建立了核测井用的核数据库,编制了少群群常数的计算程序FSMPlD和二维柱坐标(r.z)少群P_1近似计算程序FDMP2D。对江汉测井研究所模型井群的石灰岩、砂岩和白云岩三种岩性地层进行了稳态探管居中的实验测量与模拟计算。计算结果同实验结果相一致.用理论方法制作了各种环境校正图板曲线,计算精度是令人满意的。
In this paper the numerical simulation of neutron-neutron well logging is discussed. The neutron transport equation is numerically solved by using the muhigroup P-approximation method, and its application to well logging is described. A Nuclear Data Library is estab- lished, the program FSMPlD for the calculation of few group constants and a(r,z)two-di mensional few group P-approxi-mation program FDMP2D is developed, and the positive numerical solutions of neutron well logging problems are implemented in China for the first time. Two-dimensional experimental measurements and numerical calculation are performed for a series of model wells of limestone, dolomite and sandstone in Jianghan Research Insti- tute of Well Logging. The calculated and measured results are in good agreement. The chart for environmental correction is established theoretically and its precision is satisfactory.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1993年第4期49-59,共11页
Acta Petrolei Sinica
基金
国家自然科学基金资助
