Southeast Asian and Southwest Pacific Coals Contribution to the Petroleum Resource Base

摘要: Abstract As part of a global study to evaluate the contribution coals petroleum resource base, thermally immature from Sumatra, Java, Kalimantan, Australia, and New Ireland were analyzed determine: 1) hydrocarbon generation potential; 2) organic matter composition; 3) anticipated products; 4) ability expel generated hydrocarbons. Our results indicate that there is considerable variation in generate The observed differences are greater than can be explained by enrichment. A major controlling factor availability hydrogen. Kerogen atomic hydrogen carbon ratios ranged approximately 0.6 1.6. nature potential products, as determined pyrolysis-gas chromatography, also displays substantial variability. products alginite-dominated largely paraffinic waxy. Vitrinite-rich yielded more aromatic coals. Coals containing significant amounts resinite important quantities naphtheno-aromatic compounds. Although question expulsion difficult address laboratory, data saturation coal pore network cannot readily achieved, thus preventing oil expulsion. High molecular weight compounds appeared retained cracked gas at higher vitrinite reflectance values. An exception may similar Australian torbanite where sufficient achieve saturation. this generally do not contribute base. algal-dominated These are, however, volumetrically limited.