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• Total organic carbon (TOC)
  The table below<ref name=ch06r3 /> shows average TOC values for different sedimentary rock types. ! Rock type || TOC value, %
  3 KB (428 words) - 16:33, 13 April 2022

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• LECO method in estimating richness
  ...rbon (TOC)]] uses an instrument known as a LECO carbon analyzer to measure TOC values by combusting the organic carbon and measuring the resulting carbon ==Measuring TOC with LECO==
  2 KB (354 words) - 15:49, 9 February 2022
• Source rock richness
  ...on techniques of analyzing a rock for TOC are [[Rock-Eval pyrolysis]] with TOC and the [[LECO method in estimating richness|LECO method]]. Conventional we
  1 KB (179 words) - 21:39, 4 February 2022
• Van Krevelen diagram
  ...nic carbon (TOC)|TOC]]) is plotted versus [[hydrogen index]] ([HI] mg HC/g TOC).<ref name=Petersetal_2012>Peters, Kenneth E., David J. Curry, and Marek Ka
  1 KB (194 words) - 15:46, 8 March 2016
• Type I kerogen
  ...indices greater than 600 mg [[hydrocarbon]]\g [[total organic carbon (TOC)|TOC]] when thermally immature; contains algal and bacterial input dominated by
  1 KB (176 words) - 21:06, 6 July 2015
• Total organic carbon (TOC)
  The table below<ref name=ch06r3 /> shows average TOC values for different sedimentary rock types. ! Rock type || TOC value, %
  3 KB (428 words) - 16:33, 13 April 2022
• Type IV kerogen
  ...rogen]] indices below 50 mg [[hydrocarbon]]/g [[total organic carbon (TOC)|TOC]] in thermally immature rocks; dominated by organic matter that was recycle
  1 KB (185 words) - 21:11, 6 July 2015
• Type II kerogen
  ...the range of 300 to 600 mg [[hydrocarbon]]\g [[total organic carbon (TOC)|TOC]] when thermally immature; contains algal and bacterial organic matter domi
  1 KB (181 words) - 21:10, 6 July 2015
• Type III kerogen
  ...n the range of 50 to 200 mg [[hydrocarbon]]\g [[total organic carbon (TOC)|TOC]] when thermally immature; generally contains higher plant organic matter d
  1 KB (180 words) - 21:11, 6 July 2015
• Hydrogen Index (HI)
  :<math>\mbox{HI} = \mbox{S2} / \mbox{TOC} \times 100</math> ...nalyses.html NL Oil and Gas Portal]</ref> and [[Total organic carbon (TOC)|TOC]] is total organic carbon in %.
  3 KB (409 words) - 15:33, 10 February 2022
• Rock Eval analysis using hydrogen index (HI) and oxygen index (OI)
  ...and carbon. Therefore, once we know the amount of [[total organic carbon (TOC)]] present in a rock, we then need to know the amount of hydrogen present i :<math>\mbox{HI} = \mbox{S2} \mbox{ (Mg/g)}/\%\mbox{TOC} \times 100</math>
  3 KB (525 words) - 18:09, 9 February 2022
• Expulsion efficiency estimation
  ...sion efficiencies tend to increase with increasing [[total organic carbon (TOC)]]. Expulsion efficiencies for oil and gas can be as high as 70-80% for ver ...he original kerogen content of the rock using [[total organic carbon (TOC)|TOC]] values measured from source rock samples.
  4 KB (569 words) - 21:54, 14 February 2022
• Primary migration and compositional changes
  * High levels of [[total organic carbon (TOC)]] * Low [[Total organic carbon (TOC)]]
  3 KB (438 words) - 15:17, 14 February 2022
• AAPG Wiki:Wikification
  {{TOC limit|2}} | || Limit TOC if too many sections
  8 KB (1,043 words) - 14:09, 6 August 2013
• Source rock
  ...ic matter is commonly assessed by a measure of the [[total organic carbon (TOC)]] contained in a rock. Quality is measured by determining the types of [[k | Quantity of source rock || Total organic carbon (TOC) present in the source rock
  4 KB (569 words) - 21:38, 4 February 2022
• Using conventional well logs to estimate richness
  ...table measurement technique. Using the calibrated logs, we can extrapolate TOC values to uncalibrated logs to estimate source rock richness over large are
  5 KB (768 words) - 15:48, 9 February 2022
• Rock-Eval pyrolysis
  The percent [[total organic carbon (TOC)]] is actually a value that is calculated, not measured directly, using the :<math>\%\mbox{TOC} = [0.082(\mbox{S1} + \mbox{S2}) + \mbox{S4}]/10</math>
  4 KB (573 words) - 18:22, 8 February 2022
• Utica Shale, Ohio, Pennsylvania, West Virginia and Kentucky
  ...st in the organic rich Point Pleasant interval ranging from 3% to 12%. The TOC increases to the east and to the southeast. This same interval is an organi
  3 KB (542 words) - 22:36, 4 March 2022
• China Shale Gas & Liquids - Sichuan Basin
  ...ommercially producing shale interval has a thickness of 20-40m, an average TOC content of 2-4%, vitrinite reflectance (Ro) of 2-3.5%, porosity of 1.85-8.3 ...for good gas preservation conditions. In summary, the combination of high TOC content, high quartz content, high porosity and good gas preservation condi
  7 KB (985 words) - 18:54, 4 December 2023
• Australia, Northern TerritoryVelkerri Formation, Beetaloo Sub-basin
  ...rvals of the Velkerri Formation with hydrogen index as high as 800 mg HC/g TOC. Peak hydrocarbon generation is estimated to occur at thermal maturity quan
  11 KB (1,597 words) - 15:02, 9 January 2024
• China Shale Gas & Liquids - Bohai Bay Basin
  ...ood-very good source rock containing Type I-II kerogen, in average of 3.6% TOC, and at the oil-mature stage with 0.68% to 1.16% Ro (Zhao et al., 2018). Th ...31% (Song et al., 2015). The lacustrine Shahejie shale contains 1.5-19.6% TOC in general of Type I-II organic matter origin and mainly at the immature to
  8 KB (1,251 words) - 15:51, 14 March 2022

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