Home > Archive>Volume 97, Issue 2, 2023 >548-561. DOI:10.1111/1755-6724.15049
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This work was supported by the National Natural Science Foundation of China (Grant No. 42072119); and Science and Technology Project of PetroChina (Grant No. 101017kt1604003x20). The authors are indebted to all reviewers for their insightful comments and suggestions, which have significantly improved the manuscript. The authors are very grateful to Daqing Oilfield Exploration and Development Research Institute, PetroChina, for their data support.

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    Abstract:

    A sample from the Jurassic Tamulangou Fm. and two comparison samples from the Cretaceous Fm. were used to document the hydrocarbon generation kinetics and phase behaviors at two heating rates using the confined gold tube system. The results show that the different heating rates affect the reaction rates, paths and levels of organic matter evolution. The average activation energy and dominant frequency activation energy of liquid hydrocarbon are significantly lower than those of gaseous. Moreover, igneous intrusion had a positive effect on the blooming, enrichment and preservation of organic matter, promoting a Ro increase of 0.09%–1.07% in the Jurassic Tamulangou Fm. Two models were used to simulate the normal and abnormal evolution caused by thermal events combined hydrocarbon generation kinetic parameters. Thermal simulation analysis shows that oil generation was initially slow and then increased rapidly until a burial depth of 1500 m was reached at ~128 Ma. The largest hydrocarbon expulsion began at ~120 Ma, corresponding to a burial depth of 2450 m. The maximum cumulative yield is 510 mg/g TOC, and it is still in the peak period of hydrocarbon generation, which demonstrates a favorable potential for hydrocarbon exploration.

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XIE Mingxian, MA Feng, CHEN Guangpo, LIU Chang, XIAO Rong, SU Yuping, ZHANG Chengjun.2023.[J]. Acta Geologica Sinica(),97(2):548-561

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History
  • Received:April 18,2022
  • Revised:January 12,2023
  • Online: April 24,2023
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