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Effects of uranium on hydrocarbon generation of low-mature hydrocarbon source rocks containing kerogen type I |
MAO Guang-zhou1,2,3,4,LIU Chi-yang1,2,LIU Bao-quan5,ZHANG Dong-dong1,2,QIU Xin-wei1,2,WANG Jian-qiang1,2
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(1.State Key Laboratory of Continental Dynamics in Northwest Universityy Xi'an 710069, China;2. Institute of Petroliferous Basin of Northwest University f Xi'an 710069, China ;3. Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals, Qingdao 266590, China;4. College of Geological Sciences & Engineering, Shandong University of Science and. Technology,Qingdao 266590, China;5. Expbration and Development Research Institute of Huabei Oilfield Company,PtroChina’ Renqiu 062552, China)
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Abstract: |
Hydrocarbon-generating simulation experiment was proceeded using hydrocarbon source rock containing kerogen type I with uranium ( sandstone uranium ore) added. The effects of uranium on the hydrocaiix>n generation by relevant parameters of simulation experiment products were studied oomparsdively. The results show that uranium can facilitate the long-chain hydrocarbons cracking into low molecular weight hydrocarbons at lhe temperature above 400 t, as a result the molecular weight of hydrocarbons products is lowered. The degree of dry gas increases,while the C02 and H2 are largely generated, and the uranium lowered the variation temperature for about 50 X.. Uranium can lower the peak temperature of total liquid hydrocarbons generating. 350 X. is the transition temperature of alkenes yield,above which alkenes changes into alkanes. Uranium can enhance the isomerization of alkene produced in the simulating experiment, and make the molecule lattice of al-kene member arraying more closely. It's mature of products in the characteristic parameters of group composition, saturated |
Key words: uranium source rm:ks immature hydrocarbons maturity organic -inorganic interactions geology catalysis hydrocarbon generation simulation |
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