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  • Macroseepage vs. microseepage in surficial geochemistry
    ...ps. Macroseeps are very localized areas containing large concentrations of light hydrocarbons as well as, if available, high-molecular-weight hydrocarbons. * Light hydrocarbons (principally C<sub>1</sub>–C<sub>5</sub>)
    6 KB (754 words) - 22:07, 24 January 2022
  • Migration by solution in water
    ...by this type of [[Hydrocarbon migration|migration]] are limited to gas and light condensates. Solution transport is responsible for the loss of gas from man ...ar abundances in agreement with solubility ratios. The occurrence of these light oils as a separate phase demonstrates that solution transport of oils does
    6 KB (915 words) - 15:16, 14 February 2022
  • Selecting a surficial geochemistry survey method
    ...arbon detection methods]]) because they can provide evidence of the very [[hydrocarbon]]s we hope to find in our [[trap]]s and [[reservoir]]s. Additionally, chemi ...ecular weight (LMW)], high molecular weight (HMW), or [[Wikipedia:Aromatic hydrocarbon|aromatics]]) || [http://eti-geochemistry.com/gaschrom/index.html Marine sni
    6 KB (809 words) - 17:05, 25 January 2022
  • Surficial geochemical case history 2: stratigraphic trap
    ...). [[Surficial geochemistry and hydrocarbon detection methods#Detection of light hydrocarbons|Propane soil gas]] anomalies were detected at CDP 1070 and 109
    3 KB (361 words) - 17:45, 12 April 2022
  • Primary migration and compositional changes
    Early [[Petroleum generation|generation]] concentrates light products into large [[Pore system fundamentals|pores]] and [[fracture]] net ...turated+hydrocarbons.php saturated hydrocarbons] over [[Wikipedia:Aromatic hydrocarbon|aromatics]]. This is due to [[Wikipedia:Molecular sieve|molecular filtering
    3 KB (438 words) - 15:17, 14 February 2022
  • Surficial geochemical interpretation guidelines
    ...end of a petroleum [[migration pathway]]. These hydrocarbons may represent hydrocarbon leakage from an [[accumulation]] or leakage along a carrier bed or other mi ...the spectrum of seepage styles], in D. Schumacher, and M. A. Abrams, eds., Hydrocarbon Migration and Its Near-Surface Expression: [http://store.aapg.org/detail.as
    8 KB (1,128 words) - 22:24, 31 January 2022
  • Surficial geochemistry and hydrocarbon detection methods
    ==Detection of light hydrocarbons== ...nd is one of the most researched and tested geochemical survey approaches. Light hydrocarbons can reside in soils and shallow sediments in a number of ways:
    10 KB (1,443 words) - 16:08, 25 January 2022
  • Postprimary migration and compositional changes
    ...sses responsible for altering the composition of [[hydrocarbon]]s during [[Hydrocarbon migration|migration]] include the following: * Adsorption—selective removal and retardation of hydrocarbon [[migration rate]] by mineral and [[kerogen]] particles
    5 KB (694 words) - 15:17, 14 February 2022
  • Fault seal breakdown during production
    ...the [[Buoyancy pressure|buoyant pressure]] increases at the crest of the [[hydrocarbon column]], the buoyant pressure will ultimately exceed the [[displacement pr ...y cross-sealing fault. The pressure depletion curve for well A is shown in light gray (top); that for well B, in black (bottom). The buoyant pressure at the
    4 KB (530 words) - 15:21, 30 March 2022
  • Kerogen type and quality: visual assessment
    ...x through acidification. We can then examine the kerogen using transmitted light through a microscope to determine its form (structured or amorphous) and or ! Hydrocarbon potential
    2 KB (300 words) - 18:17, 9 February 2022
  • Fault plane profile construction
    ...potential fault-dependent [[Trap leakage|leak points]], and help assess [[hydrocarbon volume]]s. ...apages.com/data/bulletns/1988-89/data/pg/0073/0007/0800/0803.htm Model for hydrocarbon migration and entrapment within faulted structures]: AAPG Bulletin, vol. 72
    6 KB (834 words) - 14:51, 29 March 2022
  • Migration by separate phase
    ...ocesses can occur during separate-phase migration: formation of small free hydrocarbon masses, slug flow, cosolution, and compositional changes due to phase chang ==Small free hydrocarbon masses==
    8 KB (1,155 words) - 15:17, 14 February 2022
  • Fluid inclusions: analysis and applications
    ...story and petroleum migration [[:file:AlfraihAlSaifFigure1.jpg|Figure 1]]. Hydrocarbon-bearing fluid inclusions (HCFIs) encapsulate accumulating or migrating oil ...etal_2021>Atwah, I., Mohammadi, S., Moldowan, M., Dahl, J., 2021. Episodic hydrocarbon charge in tight Mississippian reservoirs of Central Oklahoma, USA: Insights
    20 KB (2,691 words) - 21:06, 21 April 2022
  • Vitrinite reflectance
    Vitrinite reflectance is a measure of the percentage of incident light reflected from the surface of [[Thermal maturation#Vitrinite|vitrinite]] pa ...rocess. The relationship between %R<sub>o</sub> and [[Petroleum generation|hydrocarbon generation]] is dependent on the chemistry of the vitrinite as well as the
    7 KB (970 words) - 14:28, 10 February 2022
  • Mudlogging: gas extraction and monitoring
    ...combustible hydrocarbon gases) from ''[[petroleum]] vapors'' (combustible hydrocarbon gases other than methane). This aids in identifying the types of hydrocarbo ...around the trap and vacuum line affect the relative efficiency with which light and heavy hydrocarbons are extracted and retained in the gas phase. This la
    9 KB (1,327 words) - 15:28, 24 January 2022
  • Near-surface destruction
    ...ficant water washing requires rapid water flow under the [[accumulation]]. Light aromatic molecules are affected most severely. Severe water washing may rem ...e the reservoir is exhumed or where the seal is breached near the surface, light molecular species will evaporate into the atmosphere due to their high vapo
    8 KB (1,193 words) - 18:51, 1 February 2022
  • Mowry Shale, Powder River Basin, Wyoming
    ...outcrop, the Mowry Shale has a distinct profile and weathers to a dark to light gray, is hard, and often has large jointing sets. The Mowry Shale is ranges
    4 KB (677 words) - 17:14, 22 December 2023
  • Fault plane profile
    ...potential fault-dependent [[Trap leakage|leak points]], and help assess [[hydrocarbon volume]]s. ...apages.com/data/bulletns/1988-89/data/pg/0073/0007/0800/0803.htm Model for hydrocarbon migration and entrapment within faulted structures]: AAPG Bulletin, vol. 72
    9 KB (1,461 words) - 21:57, 28 March 2022
  • Scanning electron microscopy (SEM)
    | title = Electron microscopy of shale hydrocarbon reservoirs ...oduction to SEM operational principles and geologic applications for shale hydrocarbon reservoirs
    16 KB (2,441 words) - 20:24, 23 January 2019
  • EMD Bitumen/Heavy Oil Committee
    ...t processes that act on light oil to produce heavy oil are biodegradation (hydrocarbon oxidation process involving the microbial metabolism of various classes of
    4 KB (538 words) - 20:27, 20 September 2022

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