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• Pyrolysis gas chromatography
  ...ted on whole rock or isolated kerogen samples to obtain a visual signature or “fingerprint” of the organic material present. ...her with the products of natural [[Petroleum generation|generation]] (oil) or with the products of laboratory pyrolysis of the [[asphaltenes]] from oils.
  6 KB (817 words) - 18:19, 9 February 2022
• Pressure prediction: analysis of cuttings
  ...to subsurface pressure conditions as reflected in the state of compaction or induration of the rock. This applies to cuttings from permeable as well as ...he cuttings will be further broken (smaller than normal) and may look worn or abraded. This process is more likely to take place in permeable zones where
  5 KB (818 words) - 17:56, 17 February 2022
• Sandstone diagenetic processes
  ! Preserves or enhances porosity || Destroys porosity | Shallow || <80&deg;C or 176&deg;F (<5,00 to 10,00 ft)
  7 KB (870 words) - 20:30, 5 April 2022
• Geologic mapping (UB)
  ...ological bearings ([[strike]] and [[dip]]s), faults, folds, [[fracture]]s, or many processes have had occurred in earlier times. The Soil might either be coloured, by variety of Lines, or Etchings; but the great care must be, very exactly to note upon the Map
  10 KB (1,547 words) - 14:07, 19 March 2019
• Classification basis
  ...in purpose of the proposed scheme is to help explorationists find more oil or gas traps. A well-constructed classification scheme for traps can serve oth ...that animals are mobile and can search for food, whereas plants are fixed or rooted and rely on food to be brought to them.<ref name=ch02r2 />
  5 KB (686 words) - 17:40, 12 April 2022
• Techniques for enhancing seismic facies analysis
  ...epth and coverts it to time. Put another way, forward modeling takes a 2-D or 3-D geological model and converts it to a simulated seismic section. The si * Interpret stratigraphy and fluid composition at or near the limits of seismic resolution by waveform analysis.
  5 KB (720 words) - 18:51, 4 February 2022
• Fluidic trap system
  ..._gas.aspx gas] accumulations in which the trapping element is the physical or chemical condition of the [[reservoir fluids]]. There are three regimes in
  1 KB (179 words) - 16:23, 13 April 2022
• Top seal integrity: Central Graben example
  ...ng-top-and-fault-seal_fig10-39.png|Figure 1]] is an example of evaluating, or risking, top seal integrity using two traps in the Central Graben, North Se ...top-and-fault-seal_fig10-39.png|300px|thumb|{{figure number|1}}Evaluating, or risking, top seal integrity using two traps in the Central Graben, North Se
  6 KB (910 words) - 15:44, 30 March 2022
• Shale gouge ratio
  The shale gouge ratio is simply the percentage of [[shale]] or [[clay]] in the slipped interval. [[:File:Shale-gouge-ratio-fig3.png|Figure ...y material). The SGR represents, in a general way, the proportion of shale or clay that might be entrained in the fault zone by a variety of mechanisms.
  3 KB (473 words) - 20:04, 11 March 2015
• Rock quality
  ...is much more effective for determining quality. The K_a/Φ ratio or the r₃₅ method yields information about the fluid flow and stora ...f fluid flow efficiency and storage, as shown by the K_a/Φ ratio or r₃₅, flow unit 2 is actually the better rock.
  10 KB (1,534 words) - 16:53, 4 April 2022
• Surficial geochemical survey objectives
  ..., distribution, and composition of hydrocarbons in the area of exploration or development interest and ...m/data/bulletns/1982-83/data/pg/0067/0006/0900/0932.htm Predictions of oil or gas potential by near-surface geochemistry]: AAPG Bulletin, vol. 67, p. 932
  8 KB (1,055 words) - 16:29, 25 January 2022
• Mudlogging: equipment, services, and personnel
  ''Mudlogging'', sometimes called hydrocarbon logging or physical formation logging, involves the monitoring and recording of a vari ...pressure and flow alarm and purge system to detect vacuum system blockage or leaks.
  8 KB (1,031 words) - 15:27, 24 January 2022
• Cased hole tools
  ...y or safely making the necessary open measurements or because insufficient or inappropriate open hole measurements were taken over particular zones. ...e life of a well, changes in saturation of the pore space by oil, gas, and/or water may be induced by sustained production. When these changes occur, eva
  10 KB (1,427 words) - 16:26, 18 January 2022
• Burial history chart
  ...ming of petroleum generation based on calculated [[vitrinite reflectance]] or other maturity parameters are commonly overlain on the burial history diagr
  2 KB (268 words) - 19:15, 25 June 2015
• Pressure compartment seals
  A seal can be either a pressure seal, a capillary seal, or both. They are defined as follows: ...where [[capillary pressure]] across the pore throats of a rock is greater or equal to the buoyancy pressure from a [[hydrocarbon column]]. Water can mov
  5 KB (763 words) - 17:58, 17 February 2022
• Diagenetic traps: criteria for recognition
  ...http://www.minersoc.org/pages/Archive-MM/Volume_53/53-373-547.pdf saddle]] or nonplanar dolomite, ferroan [http://encyclopedia2.thefreedictionary.com/poi ...boundaries within a given formation not coincident with structural closure or facies boundaries
  5 KB (611 words) - 21:06, 4 February 2022
• Definitions of depositional system elements
  A depositional sequence is bounded by [[Unconformity|unconformities]] or the correlative conformities and is subdivided by internal surfaces of tran ...ring one phase of relative sea level cycle, such as lowstand systems tract or highstand systems tract.
  7 KB (901 words) - 20:45, 22 February 2022
• Stratigraphic trap system
  ...stratigraphic in nature and formed as a result of depositional, erosional, or diagenetic processes. These processes are the basis for the three regimes o
  1 KB (166 words) - 16:13, 13 April 2022
• Production problems
  ...oblems can be avoided or delayed through preventive maintenance techniques or early recognition from regular analysis of producing rates, fluids, and the ...om/en/Terms.aspx?LookIn=term%20name&filter=oil-water%20contact oil-water] (or oil-gas) contact. When the vertical pressure gradient exceeds the hydrostat
  16 KB (2,540 words) - 18:41, 20 January 2022
• Drive mechanisms and recovery
  ...present in the same reservoir. A combination drive may also occur when one or more of the primary drive mechanisms are assisted by ''gravity drainage''. In a solution (or dissolved) gas drive reservoir, the oil-bearing rock is completely surround
  16 KB (2,374 words) - 20:46, 19 January 2022

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