| DOI: | 10.1306/11141414080
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| Scopus记录号: | 2-s2.0-84929753132
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| 论文题名: | Petroleum generation kinetics: Single versus multiple heatingramp open-system pyrolysis |
| 作者: | Peters K.E.; Burnham A.K.; Walters C.C.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1522
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| EISSN: | 1558-9252
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| 出版年: | 2015
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| 发表日期: | 2015
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| 卷: | 99, 期:4 | | 起始页码: | 591
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| 结束页码: | 616
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| 语种: | 英语
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| Scopus关键词: | Activation energy
; Chemical activation
; Cracking (chemical)
; Electric power distribution
; Heat transfer
; Heating
; Heating rate
; Kerogen
; Kinetic theory
; Oil shale
; Open systems
; Reaction kinetics
; Thermocouples
; Activation energy distribution
; Kinetic measurement
; Nucleation growth model
; Petroleum generation
; Petroleum migration
; Pyrolysis experiments
; Pyrolysis temperature
; Rate-limiting steps
; Kinetics
; activation energy
; comparative study
; heat transfer
; heating
; hydrocarbon generation
; kerogen
; kinetics
; petroleum
; pyrolysis
; software
; source rock
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | Some recent publications promote one-ran, open-system pyrolysis experiments using a single heating rate (ramp) and fixed frequency factor to determine the petroleum generation kinetics of source-rock samples because, compared to multiple-ramp experiments, the method is faster, less expensive, and presumably yields similar results. Some one-ramp pyrolysis experiments yield kinetic results similar to those from multiple-ramp experiments. However, our data for 52 worldwide source rocks containing types I, II, IIS, II/III, and III kerogen illustrate that one-ramp kinetics introduce the potential for significant error that can be avoided by using high-quality kinetic measurements and multiple-ramp experiments in which the frequency factor is optimized by the kinetic software rather than fixed at some universal value. The data show that kinetic modeling based on a discrete activation energy distribution and three different pyrolysis temperature ramps closely approximates that determined from additional runs, provided the three ramps span an appropriate range of heating rates. For some source rocks containing well-preserved kerogen and having narrow activation energy distributions, both single- and multiple-ramp discrete models are insufficient, and nucleation-growth models are necessary. Instrument design, thermocouple size or orientation, and sample weight likely influence the acceptable upper limit of pyrolysis heating rate. Caution is needed for ramps of 30-50°C/min, which can cause temperature errors due to impaired heat transfer between the oven, sample, and thermocouple. Compound volatility may inhibit pyrolyzate yield at the lowest heating rates, depending on the effectiveness of the gas sweep. We recommend at least three pyrolysis ramps that span at least a 20-fold variation of comparatively lower rates, such as 1, 5, and 25°C/min. The product of heating rate and sample size should not exceed ∼100 mg °C/min. Our results do not address the more fundamental questions of whether kinetic models based on multiple-ramp open-system pyrolysis are mechanistically appropriate for use in basin simulators or whether petroleum migration through the kerogen network, rather than cracking of organic matter, represents the rate-limiting step in expulsion. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929753132&doi=10.1306%2f11141414080&partnerID=40&md5=c6ff563a4c14d06be1e2cc2fd46a0c98
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/13093
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| Recommended Citation: | |
Peters K.E.,Burnham A.K.,Walters C.C.. Petroleum generation kinetics: Single versus multiple heatingramp open-system pyrolysis[J]. AAPG Bulletin,2015-01-01,99(4)
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