NDLI: TSR promotes the formation of oil-cracking gases: Evidence from simulation experiments

Content Provider	Springer Nature Link
Author	Zhang, ShuiChang Shuai, YanHua Zhu, GuangYou
Copyright Year	2008
Abstract	TSR is an interaction between sulfate and hydrocarbons, occurring widely in carbonate reservoirs. Because this process can produce a large amount of noxious acidic gases like H$_{2}$S, it has drawn serious concern recently. This paper reports an experiment that simulated an interaction between different minerals and hydrocarbon fluids under different temperature and time using a confined gold-tube system. The results showed that the main mineral that initiates TSR is MgSO$_{4}$, and adding a certain amount of NaCl into the reactive system can also promote TSR and yield more H$_{2}$S. The H$_{2}$S produced in TSR is an important incentive for the continuous oxidative degradation of crude oils. For instance, the yield of oil-cracking gases affected by TSR was twice of that not affected by TSR while the yield of TSR-affected methane was even higher, up to three times of that unaffected by TSR. The carbon isotopes of wet gases also became heavier. All of the above illustrated that TSR obviously motivates the oxidative degradation of crude oils, which makes the gaseous hydrocarbon generation sooner and increases the gas dryness as well. The study on this process is important for understanding the TSR mechanism and the mechanism of natural gas generation in marine strata.
Starting Page	451
Ending Page	455
Page Count	5
File Format	PDF
ISSN	10069313
Journal	Science in China Series D: Earth Sciences
Volume Number	51
Issue Number	3
e-ISSN	18622801
Language	English
Publisher	Science in China Press
Publisher Date	2008-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	thermochemical sulfate reduction (TSR) crude oil natural gas H$_{2}$S simulation experiment Geosciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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