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• Diapir
  ...JPG|thumb|300px|Belle Isle salt dome, Louisiana (modified from O'Neill<ref>O'Neill, C. A., 1973, Evolution of Belle Isle salt dome, Louisiana: Gulf Coas
  1 KB (142 words) - 15:58, 6 April 2015
• Regression
  ...gearth5e/content/cat_120/08120-01.htm?v=chapter&i=08120.01&s=08000&n=00120&o=|11000| Animation. with a sample seismic line]
  449 bytes (57 words) - 18:48, 28 August 2014

• File:M102Ch1Fg7.jpg ...ual peaks indicate an elevated concentration of a given element. C=carbon, O=oxygen, Mg=magnesium, Al=aluminum, Si=silicon, Ca=calcium. From AAPG Memoir (1,492 × 845 (1.24 MB)) - 22:24, 14 August 2014

• File:McCully shale New Brunswick rig.jpg ...king west at the Nabors Drilling Rig #58 drilling the Corridor/PCS McCully O-67-2425/N-66 well in New Brunswick. Photo Courtesy of: New Brunswick Depart (300 × 199 (30 KB)) - 16:17, 15 January 2014

• Transgression
  ...gearth5e/content/cat_120/08120-01.htm?v=chapter&i=08120.01&s=08000&n=00120&o=|11000| Animation. with a sample seismic line]
  480 bytes (61 words) - 16:30, 28 August 2014

• File:Paleontology fig1.png ...''. Paleoecological abbreviations: Bathy = bathyal, M = middle, U = upper, O = outer, I = inner. (From Armentrout, 1987.) (1,953 × 1,521 (104 KB)) - 17:48, 14 January 2014

• Template:Phanerozoic 220px
  {{fossil range/bar|Ordovician|O}}
  1 KB (135 words) - 14:19, 5 November 2013

• File:DiapirDiagram.JPG Belle Isle salt dome, Louisiana (modified from O'Neill, 1973). (a) Cross section (letters A1ndashZ represent the stratigraph (800 × 870 (270 KB)) - 17:59, 2 January 2015

• Gypsum
  Gypsum is an [[evaporite]], CaSO₄•2(H₂O). When dewatered at temperatures above 200°C, it becomes [[anhydrite]].
  583 bytes (83 words) - 21:19, 9 December 2014
• Vitrinite reflectance
  ...referred to as %R_o. Results are often presented as a mean R_o value based on all vitrinite particles measured in an individual samp ...inite]] is a [[Kinetics|kinetic]] process. The relationship between %R_o and [[Petroleum generation|hydrocarbon generation]] is dependent on t
  7 KB (970 words) - 14:28, 10 February 2022
• Template:Linear-gradient
  ...kground-image: -ms-linear-gradient({{{1|}}}, {{{2|}}}); background-image: -o-linear-gradient({{{1|}}}, {{{2|}}}); background-image: -webkit-linear-gradi
  361 bytes (15 words) - 14:24, 5 November 2013
• Kerogen type and maturity
  ...reach the maturity profile. This vitrinite reflectance value (0.55 %R_o ) would indicate the onset of hydrocarbon generation in this well. ! [[vitrinite reflectance|Vitrinite refl.]], % R_o, Type II
  4 KB (503 words) - 14:18, 14 February 2022
• Spore coloration and thermal alteration indices (SCI and TAI): usage
  ...TAI scales have been standardized to the [[vitrinite reflectance]] (R_o) maturity scale. Users of SCI and TAI data need to have access to the ! [[Vitrinite reflectance]] (%R_o) || Spore coloration index (SCI) || Thermal alteration index (TAI) ||
  3 KB (335 words) - 14:39, 10 February 2022
• Subregional and local pressure compartments
  ...rtment of the Anadarko basin. From Al-Shaieb et al.;<ref>Al-Shaieb, Z., J. O. Puckette, A. A. Abdalla, and P. B. Ely, 1995b, [http://archives.datapages. ...ressure compartment. Modified from Al-Shaieb et al.;<ref>Al-Shaieb, Z., J. O. Puckette, A. A. Abdalla, and P. B. Ely, 1995a, [http://archives.datapages.
  3 KB (440 words) - 17:58, 17 February 2022
• Template:Geological period
  ...tyle="font-size:0.8em; text-align:center">Mean atmospheric [[Oxygen|{{chem|O|2}}]] content over period duration</span>
  2 KB (238 words) - 21:03, 4 November 2013
• Fluid flow fundamentals
  * ''q''_o = oil production rate (STB/day) ...hip between the production flow rate measured at the stock tank, ''q''_o, and the bottomhole flowing pressure, ''p''_wf, is called t
  20 KB (3,155 words) - 21:20, 19 January 2022
• Hydrodynamic flow and pressure transients
  ...ork, Springer-Verlag, 161 p.</ref><ref name=ch10r50>Lerche, I. Thomsen, R. O., 1994, Hydrodynamics of Oil and Gas: New York, Plenum Press, 308 p.</ref> ...etroleum Geology, vol. 9, no. 3, p. 324–327., 10., 1016/0264-8172(92)90081-O</ref>
  4 KB (477 words) - 14:34, 1 April 2022
• Van Krevelen diagram
  A plot of atomic [[oxygen]]/[[carbon]] (O/C) versus atomic [[hydrogen]]/carbon (H/C) originally used to classify [[co
  1 KB (194 words) - 15:46, 8 March 2016
• Relationships between maturity and hydrocarbon generation
  ...ion]] does not exist. Values such as 0.6% [[vitrinite reflectance]] (R_o) are generally associated with the onset of oil generation or indicat
  2 KB (220 words) - 16:10, 10 February 2022
• Stable isotope stratigraphy
  ...ve measuring the ratios of isotopes of oxygen (¹⁸O/¹⁶O) and strontium (⁸⁷Sr/⁸⁶Sr). ...¹⁸O relative to ¹⁶O because the lighter ¹⁶O molecule is more easily evaporated from seawater and becomes locked on land
  9 KB (1,282 words) - 20:59, 31 January 2022
• Rate of penetration
  ...\mbox{M})(\mbox{RPM}_{o}) \times \mbox{L}(\mbox{dPb}_{o} \times \mbox{Q}_{o})</math> * _''o'' = observed value
  7 KB (1,049 words) - 19:02, 20 January 2022
• Top seal displacement pressure
  ...oil reservoirs, in J. Kleppe, E. W. Berg, A. T. Buller, O. Hjemeland, and O. Torsaeter, eds., North Sea Oil and Gas Reservoirs: London, Graham and Trot
  4 KB (530 words) - 15:56, 31 March 2022
• Thermal maturation
  | Vitrinite reflectance (V_r or R_o ) | Calibrated to R_o scale
  8 KB (1,113 words) - 18:10, 24 January 2022
• Displacement pressure estimation from pore size
  ...reservoir rocks, in J. Kleppe, E. W. Berg, A. T. Buller, O. Hjemeland, and O. Torsaeter, eds., North Sea Oil and Gas Reservoirs: London, Graham & Trotma ...n, vol. 24, no. 2, p. 225–262.</ref><ref name=ch10r94>Wells, J. D., and J. O. Amafuele, 1985, Capillary pressure and permeability relationships in tight
  5 KB (766 words) - 22:55, 2 February 2016
• Hydrodynamic traps: mapping
  ...s represent the isopotential of oil (labeled U₀). To make U_o contours, follow this procedure. ...tructure of the target formation (Z) from the isopotential of water (V_o ).
  4 KB (601 words) - 22:27, 17 February 2022
• Top seal integrity: Central Graben example
  ...82>Koch, J.-O., Holm, L., and Michelsen, O. 1982: Jurassic. In: Michelsen, O. (ed.): Geology of the Danish Central Graben. Danmarks Geologiske Undersøg
  6 KB (910 words) - 15:44, 30 March 2022
• Burial destruction
  ...[[temperature::150&deg;C]] or a [[maturation]] level much above 1.3% R_o. Dry gas accumulations can occur at shallower depths, but oil is not ...able source peridotite and variable C-H-O fluid compositions, in Mysen, B. O., ed., Magmatic Processes: Physiochemical Principles: The Geochemical Socie
  11 KB (1,525 words) - 18:50, 1 February 2022
• Seal capacity of breached and hydrocarbon-wet seals
  ..., in Kleppe, J., Berg, E. W., Buller, A. T., Hjemeland, O., and Torsaeter, O., eds., North Sea Oil and Gas Reservoirs: London, Graham and Trotman, p. 19
  5 KB (693 words) - 14:23, 1 April 2022
• Waterflooding
  ...''_wi multiplied by the oil-water [[viscosity]] ratio (''μ''_o/''μ''_w) as expressed in the following equation: :<math>M = (k_{\rm rw}/k_{\rm ro}) \times (\mu_{\rm o}/\mu_{\rm w})</math>
  10 KB (1,468 words) - 18:23, 21 January 2022
• Tool table
  ! F || S || B || K || O || Excentered || Stand-Off (in.) || Centered ...freshwater (low salt), S = high salt, B = barite, K = high potassium salt, O = oil-based.</sub><br>
  5 KB (544 words) - 16:27, 18 January 2022
• Apatite fission track analysis
  ==Using analysis with r_o==
  7 KB (994 words) - 21:38, 4 February 2022
• Paleontologic data
  ...nodont]]s or organic-walled microfossils; [[vitrinite reflectance]] (R_o) values; and observations on, or measurements of, significant specifi
  2 KB (268 words) - 15:18, 31 January 2022
• Regional pressure compartments
  .... Modified from Al-Shaieb et al.;<ref name=AlShaieb1995a>Al-Shaieb, Z., J. O. Puckette, A. A. Abdalla, and P. B. Ely, 1995a, [http://archives.datapages. ...ompartments. Al-Shaieb et al.<ref name=ch05r2>Al-Shaieb, Z., Puckette, J., O., Abdalla, A., A., Ely, P., B., 1995b, [http://archives.datapages.com/data/
  6 KB (811 words) - 17:58, 17 February 2022

• File:M106Ch13Fig02.jpg ...40. G. Adiyaman, 41. Hazro, 42. Kartaltepe, 43. G. Dinçer, 44. Maǧrip, 45. O. Sungurlu, 46. Katin, 47. Yeşildere, 48. Mehmetdere, 49. Oyuktaş, 50. Sar (700 × 491 (61 KB)) - 19:34, 5 July 2016

• Seismic attributes
  ...> and Dorn et al.<ref name=ch13r7>Dorn, G., A., Tubman, K., M., Cooke, D., O'Connor, R., 1996, [http://archives.datapages.com/data/specpubs/study42/ch11
  6 KB (859 words) - 19:42, 27 January 2022
• Log analysis: lithology
  ...S_{\rm w}^{2} + \frac{(C_{\rm bw} - C_{\rm w})V_{\rm sh}Q_{\rm v}}{F_{\rm o}} S_{\rm w}</math> | Opal (3.5% H₂ O) || SiO₂ (H₂ O)₁₂₀₉ || 2.13 || 4. || 2. || 58. || || 1.75 || 3.72 || || || —
  25 KB (3,189 words) - 17:24, 18 January 2022
• Interpreting hydrocarbon shows
  ...on (S_o), or 100% S_w, and ends up with a higher S_o. Water refills the reservoir as hydrocarbons exit a trap (fill-up). D
  8 KB (1,130 words) - 17:09, 5 April 2022
• Mudstones
  ...ld Trip 10, p. 3–14.</ref>/><ref name=Lzr2015a /><ref name=Lzr2015b>Lazar, O. R., K. M. Bohacs, J. Schieber, J. H. S. Macquaker, and T. M. Demko, 2015b, ...ef><ref name=Lzr2015b />; Bohacs et al.<ref> Bohacs, K. M., J. D. Ottmann, O. R. Lazar, M. Dumitrescu, R. Klimentidis, J. Schieber, R. Montelli, C. Liu,
  16 KB (2,352 words) - 18:46, 4 December 2023
• Relative permeability
  ...imum. At point D on the K_ro-D curve (S_w ≈ 20%, S_o ≈ 80%), relative permeability is approaching 1.0 (~ 10 md).
  9 KB (1,351 words) - 13:31, 5 April 2022
• Basin-centered gas systems
  ...ration || capillary || variable || cuts across stratigraphy || >0.7% R_o || downdip from water
  4 KB (469 words) - 19:01, 14 March 2016
• Making regional tectonic maps
  ...the structural framework, see Jones and Freed.<ref name=ch04r50>Jones, J. O., and R. L. Freed, eds., 1996, Structural Framework of the Northern Gulf of ...salt and basin architecture in the northwestern Gulf of Mexico, ''in'' J. O. Jones, and R. L. Freed, eds., Structural Framework of the Northern Gulf of
  8 KB (1,069 words) - 20:03, 18 February 2022
• Organic facies
  ...he sediments." Organic facies are determined by their elemental (C, H, and O) composition and, in ambiguous circumstances, are further differentiated by ...[[hydrogen index]] (HI) and oxygen index (OI) were substituted for H/C and O/C.
  17 KB (2,472 words) - 17:39, 13 April 2022
• Pore and pore throat sizes
  ...or a sample. Erlich et al.<ref name=ch09r17>Erlich, R., S. J. Crabtree, K. O. Horkowitz, and J. P. Horkowitz, 1991, [http://archives.datapages.com/data/
  4 KB (516 words) - 14:04, 4 April 2022
• Bakken and Three Forks Formations, Williston Basin, North Dakota and Montana (USGS)
  ...127–1153.</ref>; <ref name=GaswirthMarra />; <ref name=Nesheim>Nesheim, T. O., 2019, Examination of downward hydrocarbon charge within the Bakken-Three * Platte River Associates<ref name=Theloy>Theloy, C., J. E. Leonard, C. O. Leonard, and P. W. Ganster, 2017, Using an uncertainty assessment approach
  11 KB (1,595 words) - 20:20, 2 June 2021
• Basin-centered gas systems: elements and processes
  ...ld have levels of thermal maturity equal to or greater than 0.7-0.9% R_o. ...cracking to gas starts at [[vitrinite reflectance]] values of 1.75% R_o (M. D. Lewan, 2002, personal communication).
  20 KB (2,949 words) - 18:24, 6 April 2016
• Kerogen
  ! [[Vitrinite reflectance|Vitrinite refl.]], % R_o, Type II ! Vitrinite refl., % R_o, Type III
  17 KB (2,363 words) - 17:40, 9 February 2022
• Template:Linear-gradient/doc
  ...code>-moz-linear-gradient</code>, <code>-ms-linear-gradient</code>, <code>-o-linear-gradient</code>, <code>-webkit-linear-gradient</code> and <code>line
  4 KB (621 words) - 14:26, 5 November 2013
• Structural geology fieldwork
  ...S., Suleymanova, S., F., Ateava, E., Z., Mamedova, D., N., Koshkarly, R., O., 1998, [http://archives.datapages.com/data/bulletns/1998/01jan/0025/0025.h
  4 KB (557 words) - 20:06, 2 February 2022
• User:36.78.101.86/Sandbox
  <math>\text{C}_\text{t} = \text{S}_\text{o} \text{C}_\text{o} + \text{S}_\text{g} \text{C}_\text{g} + \text{S}_\text{w} \text{C}_\text{w
  12 KB (1,800 words) - 00:36, 1 July 2015
• Maps of hydrocarbon types: Gulf of Mexico example
  Table 1, modified from Gross et al.<ref name=ch04r40>Gross, O. P., K. C. Hood, L. M. Wenger, and S. C. Harrison, 1995, Seismic imaging an
  5 KB (633 words) - 20:02, 18 February 2022

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