Influences of TSR on Gaseous Hydrocarbon Components and Carbon Isotopes: Revelations from High-Temperature and High-Pressure Simulation Experiments

详细信息   

• 责任者：Zhang Jianyong (Hangzhou Research Institute of Petroleum Geology ; PetroChina ; Hangzhou 310023 ; China) ; Liu Wenhui
• 刊名：Petroleum Geology & Experiment
• 出版年：2012
• 卷期：34(1)
• 关键词：硫化氢 ; hydrogen sulfide ; 碳同位素 ; carbon isotopes ; 高温高压实验 ; high temperature-high pressure experiment
• 页码：p.66-70,77
• 图表：1 illus., 7 tables, 21 refs.
• 分类号：1003
• issnNo：ISSN1001-6112
• isbnNo：CN32-1151/TE

摘要

 Crude oil rich in sulfur,kerogen of types Ⅱ and Ⅲ and magnesium sulfate were tested in 6 reaction systems(divided into 3 groups) so as to study the influences of thermochemical sulfate reduction(TSR) on gaseous hydrocarbon components and carbon isotopes.The modeling experiments have proved that: 1)TSR leads to the obvious increase of H₂S and CO₂ yields;2)TSR makes gaseous hydrocarbon become dryer,that is,the C²⁺ series are easier to react in TSR while CH₄ seldom participates in TSR;3)TSR makes the carbon isotopes of gaseous hydrocarbon become heavier and that of CO₂ become lighter; and 4) TSR makes much more obvious change of carbon isotopes in methane than in ethane and propane,that is,the value of δC₂-δC₁ decreases.