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Study of thermochemical sulfate reduction of different organic matter: Insight from systematic TSR simulation experiments
Zhao, Heng1,3,4; Liu, Wenhui2; Borjigin, Tenger5; Zhang, Jianyong6; Luo, Houyong2; Wang, Xiaofeng2
2019-02-01
Source PublicationMARINE AND PETROLEUM GEOLOGY
ISSN0264-8172
Volume100Pages:434-446
AbstractA series of thermochemical sulfate reduction (TSR) simulation experiments were carried out involving different organic matter (crude oil, solid bitumen, type II kerogen, type III kerogen) and different sulfate species (anhydrite and MgSO4) to address the chemical and carbon isotopic variations of the hydrocarbon, H2S and CO2. The increase of main peak carbons of residual saturated hydrocarbon and the decrease of gaseous hydrocarbons from control treatment to corresponding sulfate treatments suggest that TSR promote the consumption of both liquid and gaseous hydrocarbons. The delta C-13(1-3) values generally shift positively from control treatment to sulfate treatments and the (delta(13)(Cethne)-delta C-13(methane)) values in sulfate treatments are higher than that in control treatments. The variation of delta C-13(1-3) in TSR is controlled by the isotope fractionation during the generation and consumption of C1-3 in TSR. MgSO4 is more reactive than anhydrite in TSR. A certain amount of H2S is incorporated into solid bitumen as the result of secondary alteration. We believe that the reactivity order of different organic matter in TSR is crude oil > solid bitumen > type II kerogen > type III kerogen. The reactivity of organic matter in TSR depends on the hydrocarbon generation kinetics of each organic matter. The dissolution/decomposition and precipitation of carbonate control the yield of CO2 in sour reservoirs. The negative shift of delta(CO2)-C-13 with increasing TSR extent is mainly due to the inheritance effect of carbon isotope from hydrocarbons. Inorganic CO2 sourced from the thermal decomposition or acid dissolution of carbonate mineral impose significant influence on delta(CO2)-C-13. The H2S yields decrease with CH4 yields and increase with delta(CH4)-C-13 value, the delta(CH4)-C-13 values increase with residual amount of gaseous alkane (1-H2S/(residual alkane + H2S)), suggesting that methane acted as reactant in TSR. The (delta(CO2)-C-13-delta(CH4)-C-13) values decrease significantly with increasing temperature, and the delta(CO2)-C-13 is even more negative than delta(CH4)-C-13 in 450 degrees C MgSO4 treatments involving type II and type III kerogen. Accordingly, methane acted as a predominant reactant in 450 degrees C sulfate treatments in our experiment. It is possible for natural gas with high gas dryness to experience methane-dominated TSR in geological reservoirs.
KeywordThermochemical sulfate reduction (TSR) Carbon isotope CO2 Sour gas risk CH4
DOI10.1016/j.marpetgeo.2018.11.009
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province
WOS KeywordTRIASSIC FEIXIANGUAN FORMATION ; CARBONATE GAS-RESERVOIRS ; EAST SICHUAN BASIN ; ISOTOPIC FRACTIONATIONS ; GASEOUS HYDROCARBONS ; SMACKOVER FORMATION ; BURIAL DIAGENESIS ; HYDROGEN-SULFIDE ; STABLE-ISOTOPES ; KHUFF FORMATION
Language英语
Funding ProjectNational Natural Science Foundation of China[U1663201] ; National Key Basic Research and Development Program (973 Program), China[2012CB214801] ; Key Laboratory Project of Gansu Province[1309RTSA041]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research and Development Program (973 Program), China ; National Key Basic Research and Development Program (973 Program), China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000458221100028
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90550
Collection兰州油气中心
Corresponding AuthorLiu, Wenhui
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
2.Northwest Univ, Xian 710069, Shaanxi, Peoples R China
3.China Natl Adm Coal Geol, Key Lab Shale Gas, Key Lab Mineral Resources Coal Measures, Jiangsu Geol & Mineral Resources Design & Res Ins, Xuzhou 221006, Jiangsu, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Sinopec Petr Explorat & Prod Res Inst, Wuxi Res Inst Petr Geol, Wuxi 214151, Peoples R China
6.Hangzhou Res Inst Petr Geol, Hangzhou 310023, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Heng,Liu, Wenhui,Borjigin, Tenger,et al. Study of thermochemical sulfate reduction of different organic matter: Insight from systematic TSR simulation experiments[J]. MARINE AND PETROLEUM GEOLOGY,2019,100:434-446.
APA Zhao, Heng,Liu, Wenhui,Borjigin, Tenger,Zhang, Jianyong,Luo, Houyong,&Wang, Xiaofeng.(2019).Study of thermochemical sulfate reduction of different organic matter: Insight from systematic TSR simulation experiments.MARINE AND PETROLEUM GEOLOGY,100,434-446.
MLA Zhao, Heng,et al."Study of thermochemical sulfate reduction of different organic matter: Insight from systematic TSR simulation experiments".MARINE AND PETROLEUM GEOLOGY 100(2019):434-446.
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