Abstract Complex permittivity measurements were conducted for four crude oils and a gas condensate at temperatures ranging from 25 °C to 125 °C. The measurements were conducted using a liquid test fixture and results are reported for frequencies between 50 kHz and 5 MHz. Geochemical analyses were performed, and the main components of the liquid hydrocarbons were identified and, in the process, both the provenance and genesis of the crude oils were determined. Analysis of the permittivity measurements show that, within uncertainty, the real part of the dielectric permittivity spectra can be related back to the density (API), maturity, and secondary chemical alteration. The behavior of the imaginary part, although dominated by the conductivity, which is correlated to the asphaltene, metal, and aromatic content of the hydrocarbons studied, showed an interesting result that lead to the prediction of inseparable water, which was further verified by Nuclear Magnetic Resonance (NMR) measurements. In addition, results at 25 °C were combined with those obtained from two high accuracy, multipoint re-entrant resonant cavities for nine different frequencies between 170 MHz and 8.6 GHz. Results predict relaxation process between 5 MHz and 100 MHz, in agreement with the literature.

中文翻译：

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液态烃地球化学性质的介电表征从 25 °C 到 125 °C

摘要 在 25 °C 至 125 °C 的温度范围内对四种原油和一种凝析油进行了复介电常数测量。测量是使用液体测试夹具进行的，结果报告了 50 kHz 和 5 MHz 之间的频率。进行了地球化学分析，确定了液态烃的主要成分，并在此过程中确定了原油的来源和成因。介电常数测量的分析表明，在不确定性范围内，介电常数谱的实部可能与密度 (API)、成熟度和二次化学变化有关。虚部的行为，虽然受电导率支配，电导率与所研究的碳氢化合物的沥青质、金属和芳烃含量相关，显示了一个有趣的结果，可以预测不可分离的水，核磁共振 (NMR) 测量进一步证实了这一点。此外，将 25 °C 下的结果与从 170 MHz 和 8.6 GHz 之间的九个不同频率的两个高精度、多点重入谐振腔获得的结果相结合。结果预测 5 MHz 和 100 MHz 之间的弛豫过程，与文献一致。