Abstract
Although Cenozoic saline lacustrine fine-grained sedimentary rocks with great potential for unconventional oil and gas resources are widely deposited in the northwestern Qaidam Basin, there is still a lack of investigation on their reservoir conditions owing to complex saline sedimentary environments, relatively low maturity, and strong heterogeneity. Previous studies have shown that the source rocks have a relatively high hydrocarbon generation conversion rate, and several oil-bearing structures have been found in the study area. In this study, core samples of the Neogene saline lacustrine fine-grained sedimentary rocks from representative wells in the study area were collected and investigated. Based on the testing of organic matter abundance, type, and maturity, combined with X-ray diffraction, high-pressure mercury injection (HPMI), low-temperature liquid nitrogen adsorption tests (N2-GS), and scanning electron microscopy (SEM) as well as thin section observations, the hydrocarbon accumulation conditi...
Published Version
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