Understanding of reservoir gas compositions in a natural case using stepwise semi-open artificial maturation

• Published in: Marine and petroleum geology Vol. 19; no. 5; pp. 589 - 599
• Main Authors: Michels, Raymond, Enjelvin-Raoult, Noële, Elie, Marcel, Mansuy, Laurence, Faure, Pierre, Oudin, Jean-Louis
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.05.2002; Elsevier Science; Elsevier
• Subjects: Applied sciences; Carbon isotopes; Crude oil, natural gas and petroleum products; Earth sciences; Earth, ocean, space; Energy; Exact sciences and technology; Fuels; Geology and geochemistry. Geological and geochemical prospecting. Petroliferous series; Hydrocarbons; Isotope geochemistry; Isotope geochemistry. Geochronology; Natural gas; Prospecting and exploration; Prospecting and production of crude oil, natural gas, oil shales and tar sands; Pyrolysis; Sciences of the Universe; Sedimentary rocks; Asia; South east Asia; Pyrolysis; Natural gas; Carbon isotopes; experimental studies; reservoir rocks; stable isotopes; C-13/C-12; hydrocarbons; reflectance; propane; reservoirs; gas chromatography; high pressure; natural gas; maturation; ethane; depth; pyrolysis; oil and gas fields; migration; methane; temperature; vitrinite

In a study of the gas distribution and composition in different reservoirs of multilayered gas fields in South-East Asia, two types of variations with depth of the δ 13C values of gases (in particularly methane) were observed. In the normally pressured zones, the δ 13C values of methane increase ste...