烃源岩非均质性对有机质生烃动力学参数影响及评价

王民; 卢双舫; 薛海涛; 吴朝东; 王雪飞

doi:10.3799/dqkx.2011.054

Volume 36 Issue 3

May 2011

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Article Navigation > Earth Science > 2011 > 36(3): 530-540

WANG Min, LU Shuang-fang, XUE Hai-tao, WU Chao-dong, WANG Xue-fei, 2011. The Influence and Appraisement of Source Rock Heterogeneity on Kinetic Parameters of Hydrocarbon Generation from Organic Matter. Earth Science, 36(3): 530-540. doi: 10.3799/dqkx.2011.054

Citation:

WANG Min, LU Shuang-fang, XUE Hai-tao, WU Chao-dong, WANG Xue-fei, 2011. The Influence and Appraisement of Source Rock Heterogeneity on Kinetic Parameters of Hydrocarbon Generation from Organic Matter. Earth Science, 36(3): 530-540. doi: 10.3799/dqkx.2011.054

Citation:

WANG Min, LU Shuang-fang, XUE Hai-tao, WU Chao-dong, WANG Xue-fei, 2011. The Influence and Appraisement of Source Rock Heterogeneity on Kinetic Parameters of Hydrocarbon Generation from Organic Matter. Earth Science, 36(3): 530-540. doi: 10.3799/dqkx.2011.054

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The Influence and Appraisement of Source Rock Heterogeneity on Kinetic Parameters of Hydrocarbon Generation from Organic Matter

doi: 10.3799/dqkx.2011.054

WANG Min^{1, 2, 3
,},
LU Shuang-fang^{1, 2},
XUE Hai-tao^{1, 2},
WU Chao-dong³,
WANG Xue-fei¹

1.
Earth Sciences Institute, Northeast Petroleum University, Daqing 163318, China
2.
Key Laboratory of Mechanism of Hydrocarbon Reservoirs and Resource Assessment, Northeast Petroleum University, Daqing 163318, China
3.
Earth and Space Sciences Institute, Peking University, Beijing 100871, China

Received Date: 2010-11-12
Publish Date: 2011-05-01

Abstract

Abstract

The heterogeneity of source rock, the uncertainty of frequency factor and the simulation experiment conditions (such as being open or closed, adding water or not, heating rates and the reproducibility) all affect the kinetic parameters of hydrocarbon generation from organic matter, which in turn, affect the reliability of appraised hydrocarbon potential. To this point, eighteen organic matter (OM) samples were pyrolyzed by using the Rock-Eval equipment, and parallel first-order reaction models including the model with a single frequency factor and a discrete distribution of activation energies (SFF model) and the model with multiple frequency factors and a discrete distribution of activation energies (MFF model) are adopted to analyze kinetic characteristics of hydrocarbon generation of all samples and to contrast the results difference of geological extrapolation. The comparison and analysis shows that the MFF model can avoid miscalculating the hydrocarbon generation potential (reaction ratio) in the low and high evolution stages, which appears in SFF model. For comparing the discrepancy of hydrocarbon generation from different type of kerogens, the arithmetic mean and weighted mean methods with pyrolysis parameter S₂ are employed to get averaged kinetic parameters, and then averaged kinetic parameters are extrapolated with a heating rate of 3.3 ℃/Ma. At last, the application of two kind kinetic models with the kinetic parameters of the weighted mean methods in Heiyupao Sag of Songliao basin shows that if taking the hydrocarbon transformation ratio of 10% as the onset of the hydrocarbon generation threshold, the threshold depth of hydrocarbon generation is about 1 700 m, which is consistent with the appraisement result by using other geochemical parameters. Therefore, it is recommended that the kinetic method with the MFF model and the weighted mean kinetic parameters is used to appraise the hydrocarbon resource potential.
- kinetic model,
- simulation experiment,
- frequency factor,
- type of organic matter,
- heterogeneity,
- petroleum geology

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References(37)

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The Influence and Appraisement of Source Rock Heterogeneity on Kinetic Parameters of Hydrocarbon Generation from Organic Matter

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