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TitleQuick evaluation of source rock kerogen kinetics using hydrocarbon pyrograms from regular Rock-Eval analysis
AuthorChen, Z; Liu, X; Jiang, C
SourceEnergy & Fuels vol. 31, no. 2, 2017 p. 1832-1841, https://doi.org/10.1021/acs.energyfuels.6b01569
Year2017
Alt SeriesEarth Sciences Sector, Contribution Series 20160165
PublisherAmerican Chemical Society
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceAlberta
Lat/Long WENS-120.0000 -115.0000 56.0000 53.5000
Subjectssource rocks; source rock analyses; hydrocarbon generation; kerogen; kerogen kinetics; numerical models
Illustrationsgraphs; histograms; location maps; formulae
ProgramShale-hosted petroleum ressource assesment, Geoscience for New Energy Supply (GNES)
AbstractSource rock kinetics is a reflection of kerogen reactivity and hydrocarbon generation behaviour that controls the onsets and rates of hydrocarbon generations as well as oil and gas generation windows, which are critical both in quantitative resource modeling and for identifying production 'sweet spots'. Routine source rock kinetics study requires special laboratory procedure and expertise, and only a few can afford to carry their own experiments for kerogen kinetics of a specific source rock system. In quantitative modelling of hydrocarbon generation, the kinetic parameters were often adopted from analogous source rock system available in published datasets or automatically picked by a basin modeling software based on kerogen type or depositional environment and facies. Recent studies (Peters et al. 2006)1 revealed that source rock kinetics may vary substantially even for the same type of kerogen because of compositional variation. Thus source rock specific kerogen kinetics is more desirable for better characterizing the thermal transformational behavior of the source. On the other hand, the requirements for information regarding the characteristics of source rock reactivity and hydrocarbon generation behavior are time sensitive for supporting business decision sometimes. Directly assessing reactivity and transformation behaviour of source rock based on archived Rock-Eval data would allow rapid and time-sensitive results to be obtained. This paper proposes a method that characterizes source rock kinetics using pyrograms of archived Rock-Eval analysis. Because the method uses existing Rock-Eval data directly, no new samples and laboratory experiments are required, thus providing a quick and cost effective technique to determine simple kinetic parameters. The mathematical formulation of this numerical model is described herein with applications showing the advantage and potential limitations.
Summary(Plain Language Summary, not published)
Source rock kinetics controls the onsets and rates of hydrocarbon generation, which are important to resource evaluation. Traditional methods require special laboratory procedure and expertise and only a few can afford to carry their own experiments. The kinetic parameters were often adopted from analogous. Recent studies indicated that source rock kinetics may vary substantially even for the same type of kerogen. Thus it is better to have the parameters from data directly. Sometimes, the requirements are time sensitive for supporting business decision. Directly assessing source rock kinetics from archived Rock-Eval data would allow rapid and time-sensitive results. This paper proposes a method that estimate source rock kinetics using archived Rock-Eval pyrograms and can provide a quick and cost effective technique to address the requirement. The mathematical formulation of this numerical model is described herein with applications showing the advantage and potential limitations.
GEOSCAN ID299204