Carbon-initiated sulfate reduction in a closed hydrous system: implications for the formation of H2S in deeply buried petroleum reservoirs
Carbon-initiated sulfate reduction in a closed hydrous system: implications for the formation of H2S in deeply buried petroleum reservoirs
复制标题
封闭含水系统中碳引发的硫酸盐还原：对深埋石油储层中 H2S 形成的影响
DOI：
10.1007/s12517-021-07087-2
复制
发表时间：
2021-04
影响因子：
--
通讯作者：
Yi Wu
中科院分区：
文献类型：
--
作者：
Kangle Ding;Yan Liu;Fujia Guan;Zhenzhen Yu;Yi Wu
首次对无产气潜力的固体沥青（焦沥青）模型化合物活性炭（AC）的硫酸盐还原进行了实验研究。模拟实验表明，高温AC水热还原硫酸钙（CaSO4）可生成硫化氢（H2S）。这一结果表明，除了碳氢化合物外，水还可以作为H2S生成的氢源。H2S的形成机制可能是一个以硫化钙（CaS）为不稳定中间体的三期连续过程。≥150℃时，碳的热力学反应性高于甲烷，但低于乙烷和丙烷。碳引发硫酸盐还原反应为零级反应，表观活化能为172.36 kJ/mol。外推到典型油气藏温度范围（100 ~ 200℃），确定CaSO4 TSR中速率常数顺序为丙烷b>乙烷>固体沥青>甲烷。尽管固体沥青对烃类气体的生成作用不大，但在高干系数深埋气藏中，碳引发硫酸盐还原生成的H2S可能是TSR作用下甲烷蚀变不可缺少的催化剂。
Sulfate reduction by activated carbon (AC), a model compound for solid bitumen (pyrobitumen) without gas generative potential, was studied experimentally for the first time. The simulation experiments show that hydrogen sulfide (H2S) is produced from hydrothermal reduction of calcium sulfate (CaSO4) by AC at elevated temperatures. This result demonstrates that water can also act as a hydrogen source for H2S generation in addition to hydrocarbons. The formation mechanism of H2S may undergo a three-stage sequential process with calcium sulfide (CaS) as the unstable intermediate. The reactivity of carbon is thermodynamically higher than that of methane at ≥ 150oC but lower than that of ethane or propane in sedimentary basins. Carbon-initiated sulfate reduction follows a zero–order reaction with an apparent activation energyEaof 172.36 kJ/mol. When extrapolated to the temperature range of typical oil and gas reservoirs (100–200oC), the order of the rate constant is determined as propane > ethane > solid bitumen > methane in the TSR of CaSO4. Although solid bitumen contributes little to hydrocarbon gas generation, H2S derived from carbon-initiated sulfate reduction may act as an indispensable catalyst for the consequent alteration of methane by TSR in deep buried gas reservoirs with high dryness coefficient.
登录
查看更多内容
DOI：
10.4236/ojogas.2020.54015
发表时间：
2020-07
期刊：
Open Journal of Yangtze Oil and Gas
影响因子：
--
作者：
H. Chao;Ding Kangle;Yan Liu;Fujia Guan;Zou Mei;Zhenzhen Yu;Yi Wu
通讯作者：
H. Chao;Ding Kangle;Yan Liu;Fujia Guan;Zou Mei;Zhenzhen Yu;Yi Wu
煤炭地下气化热解区有机氮与无机物的相互作用：受控热解实验的见解
影响因子：
9
作者：
Kangle Ding;Changmin Zhang
通讯作者：
Changmin Zhang
CH4-MgSO4-H2O反应体系模拟实验
DOI：
10.1007/s11434-008-0073-3
发表时间：
2008-05
期刊：
科学通报(英文版)
影响因子：
--
作者：
Zhong NingNing;Yue ChangTao;Li ShuYuan;Ding KangLe
通讯作者：
Ding KangLe
影响因子：
5.3
作者：
L. Truche;E. Bazarkina;G. Barré;E. Thomassot;G. Berger;J. Dubessy;P. Robert
通讯作者：
L. Truche;E. Bazarkina;G. Barré;E. Thomassot;G. Berger;J. Dubessy;P. Robert
影响因子：
3
作者：
Hill, RJ;Tang, YC;Kaplan, IR
通讯作者：
Kaplan, IR