The limitations of the existing techniques for in situ rock thermal property measurements and numerous cases with non-coring drilling determine the necessity for methods of rock thermal property determination based on well-logging data. Existing approaches for determining rock thermal properties from well-logging data are appropriate only for isotropic rocks. Since many rock types, especially organic-rich shales, exhibit a considerable degree of heterogeneity and anisotropy, advanced approaches for well log-based determination of rock thermal properties are highly desired. The implementation of the new thermal core logging technique, which provides continuous and high-precision measurements of the principal components of the thermal conductivity tensor and volumetric heat capacity from core samples, enabled the development of a new framework for the indirect determination of rock thermal properties. An enhanced technique for determining rock thermal conductivity and volumetric heat capacity from well-logging data accounting for thermal anisotropy and in situ thermobaric conditions is proposed and tested. This technique includes both the application of theoretical models and regression analysis of rock thermal properties, depending on the availability and quality of the input data. Three theoretical models involving a correction factor were compared to provide the best results. The experimental data of rock thermal properties inferred from the thermal core-logging and well-logging data from five wells (1630 samples) drilled through two highly anisotropic unconventional formations – the Bazhenov and the Domanic – were used as the basis of this newly developed approach. It is shown that rock thermal conductivity can be predicted from well-logging data accounting for thermal anisotropy with an uncertainty of less than 12 % and rock volumetric heat capacity with a total uncertainty of less than 5%.

现有技术的局限性原位岩石热性质的测量以及无钻取心的许多情况决定了基于测井数据确定岩石热性质的方法的必要性。从测井数据确定岩石热特性的现有方法仅适用于各向同性岩石。由于许多岩石类型，特别是富含有机质的页岩表现出相当程度的异质性和各向异性，因此非常需要用于基于测井的岩石热性质确定的先进方法。新的热岩心测井技术的实施，可以对岩心样品的导热系数张量和体积热容量的主要成分进行连续和高精度的测量，从而为间接确定岩石热性质提供了新的框架。原位提出并测试了高温高压条件。根据输入数据的可用性和质量，此技术包括理论模型的应用和岩石热特性的回归分析。比较了三种涉及校正因子的理论模型，以提供最佳结果。这种新开发的方法的基础是从通过两个高度各向异性的非常规地层钻探的五个井（1630个样品）的热岩心测井和测井数据推断出的岩石热性质的实验数据。 。结果表明，可以通过测井数据预测岩石的热导率，该数据考虑了热各向异性（不确定性小于12％）和岩石体积热容（总不确定性小于5％）。