期刊
INTERNATIONAL JOURNAL OF COAL GEOLOGY
卷 203, 期 -, 页码 87-98出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.coal.2019.01.003
关键词
Raman spectroscopy; Organic matter; Maturity; Kerogen; Coals; Organic-rich mudstone; Shale gas; Automated spectral analysis
资金
- Kingston University
- University Alliance DTA-Energy programme [P1567-100]
- NERC [bgs05017] Funding Source: UKRI
A simple and rapid automated Raman maturity method is calibrated using a suite of Carboniferous organic-rich mudstones and coals from the Inch of Ferryton-1 borehole in the Midland Valley of Scotland. Sediments in the borehole have been thermally matured by intrusion of a quartz dolerite sill, generating vitrinite reflectance (VR) values ranging from 0.5 to 6.0%VRo. Calibration curves are tested on eight other UK wells penetrating Carboniferous shales and coals in the Midland Valley and southern Pennine Basin. The G-band full-width at half maximum (G-FWHM) is the best Raman parameter to estimate the thermal maturity of organic matter (OM) in the oil and gas window (0.5 to 3%VRo) and has a very strong correlation with VRo.
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