Abstract
Carbon isotopic ratios (13C/12C) of methane, ethane and propane were analyzed for natural gases from several oil and gas fields in Niigata and Akita in Japan. A strong correlation between δ13C(C2H6) and δ13C(C3H8) was observed. This relation is well explained by a kinetic theory proposed by Chung et al. (1988). It propounds that carbon isotopic ratios of the gases are mainly decided by kinetics. on the other hand, only a weak correlation was observed between δ13C(CH4) and δ13C(C2H6). The weak correlation is inferred to be due to mixing of biogenic gas that has low δ13C(CH4). Further, δ13C of source kerogen of these gases can be calculated from δ13C(C2H6) and δ13C(C3H8). It is inferred that δ13C of source kerogen of the gases in Akita and Niigata are close to each other.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
