Laboratory simulation of the influence of chromatographic effect and microbial oxidation on hydrocarbon microseepage. (29th September 2022)

• Record Type: Journal Article
• Authors: Wang, Guo-Jian; Zou, Yu; Klusman, Ronald W.; Tang, Jun-Hong; Lu, Li
• Is Part Of: International journal of oil, gas and coal technology. Volume 31:Number 4(2022)
• Page Start: 362
• Page End: 381
• Publication Date: 2022-09-29
• Subjects: microseepage hydrocarbon -- chromatographic effect -- microbial oxidation -- simulation experiment -- geochemical anomaly identification; Petroleum as fuel -- Periodicals; Gas as fuel -- Periodicals; Coal -- Periodicals; Biomass energy -- Periodicals; Hydrogen as fuel -- Periodicals; 662.6
• Languages: English
• ISSNs: 1753-3309

Abstract

An experimental apparatus has been constructed with various experimental conditions to simulate the influence factors of the hydrocarbon gases microseeping from the deep reservoir to the surface. Both the chromatographic effect and the microbial oxidation effect are considered in the experiment. The results show that: the vertical hydrocarbon microseepage has the characteristics of a 'jump-over migration effect'; the coupling of a chromatographic process and microbial oxidation has less effect on the composition ratios of microseepage hydrocarbons, whereas the microbial oxidation has a large effect on the isotope values of methane; and the normal alkane and iso-alkane content of vertical microseepage show obvious differences due to the influence of chromatographic process and microbial oxidation. These experimental results may help to identify the genetic origins of the vertically migrating hydrocarbons, and thus promote the successful application of the surface hydrocarbon geochemical exploration technology. [Received: July 1, 2021; Accepted: February 23, 2022]