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• Geostatic and lithostatic pressure
  ...ty (sandstone and shale = 2.65 g/cm³, limestone = 2.71 g/cm³) * ρ_w = weighted average of pore-water density (g/cm³)
  3 KB (402 words) - 14:47, 16 February 2022
• Free water level determination using pressure
  # Calculate downdip length of [[hydrocarbon column]] (''h''): As an example, let's determine the downdip length of a 30°API oil column with the following givens:
  3 KB (463 words) - 17:54, 17 February 2022
• Buoyancy pressures and hydrocarbon presence
  ...ravity|gravity oil]], and the total vertical trap closure is [[length::500 ft]]. ...mb|freshwater gradient]]). Vertical trap [[closure]] is only [[length::500 ft]]; therefore, the measured formation pressure does not match the geology an
  3 KB (387 words) - 18:56, 16 February 2022
• Midale seal capacity and trap type
  ...rom producing wells at Weyburn and nearby Steelman fields is [[length::600 ft]]. We are left with two possible conclusions: ...]] [[depth::(60 m]]), then the total column could not exceed [[length::300 ft]] [[depth::(90 m]]).
  5 KB (723 words) - 17:02, 12 April 2022
• Magnetics: interpreting residual maps
  ...tary section in a new basin, i.e., in determining whether it is 2, 5, or [[length::10 km]] thick, for example, to a usual accuracy of about ±15% under favor ...roximately 3.6 km (12,000 ft) thick and basement lies about 3.8 km (12,500 ft) beneath flight level.]]
  8 KB (1,109 words) - 17:41, 24 January 2022
• Stratigraphic trap seals
  ...:exploring-for-stratigraphic-traps_fig21-3.png|300px|thumb|{{figure number|3}}Map and cross section of Raven Creek field.]] [[:file:exploring-for-stratigraphic-traps_fig21-3.png|Figure 3]] shows a map and [[cross section]] of Raven Creek field.
  5 KB (632 words) - 20:26, 3 February 2022
• Seal capacity of different rock types
  ...onmanga Basin, Australia: Marine and Petroleum Geology, vol. 10, no. 1, p. 3–13., 10., 1016/0264-8172(93)90095-A</ref> Khrushin (1993), and Shea et al * Most good sands can trap only [[length::50 ft]] or less of oil column.
  5 KB (760 words) - 20:55, 31 March 2022
• Spontaneous potential logs in water resistivity calculation
  ...ion is necessary if the zone SP is measured from is less than [[length::20 ft]] thick.) ==Step 3: convert r_mf to r_{mf eq}==
  6 KB (1,027 words) - 16:40, 5 April 2022
• Mudlogging: the mudlog
  ===Track 3: depth annotation=== ...in.]] to [[length::100 ft]] (1:600) and [[length::5 in.]] to [[length::100 ft]] (1:240). This track also includes the location (depth or interval) of the
  5 KB (752 words) - 15:39, 24 January 2022
• Vertical and lateral seismic resolution and attenuation
  ...al-and-lateral-seismic-resolution-and-attenuation_fig3.png|{{figure number|3}}Seismic response of a wedge pinchout. ...be to allow distinguishable reflections from the bed's top and bottom. The length (in time) of seismic wavelets produces confusion because successive reflect
  8 KB (1,164 words) - 20:24, 21 January 2022
• Cased hole tools
  | Gamma ray || [[length::2 ft]] || [[length::12 in]] || Well-to-well correlation and estimates ''V''_sh || Af
  10 KB (1,427 words) - 16:26, 18 January 2022
• Conventional coring
  ...::1.5 ft]] for short radius horizontal wells to greater than [[length::400 ft]] for vertical holes. ! Inner Barrel || Core Length (ft) || Special Features
  13 KB (1,885 words) - 20:49, 19 January 2022
• Borehole gravity
  ...ma-gamma [[density log]]. The broader difference anomaly observed over the length of the logged interval is explained by the structural influence of the reef ...ttp://store.aapg.org/detail.aspx?id=545 AAPG Treatise of Petroleum Geology 3], p. 15-15,</ref> It is practically unaffected by near-borehole influences,
  10 KB (1,517 words) - 15:54, 20 January 2022
• Petrophysical analysis of Sorrento field wells
  ...ones that are wet but too tight to produce. Between these are [[length::30 ft]] [[depth::(8.5 m]]) of mesoto macroporous sandstone (flow units 1-4). Subsea elevation of –1,030 ft (–314 m) is marked in the depth track.
  7 KB (956 words) - 17:24, 11 April 2022
• Displacement pressure: theory vs. reality
  ...ld in the Tar Springs Formation reservoir is [[length::29 m]] [[depth::(95 ft]]). ...onmanga Basin, Australia: Marine and Petroleum Geology, vol. 10, no. 1, p. 3–13., 10., 1016/0264-8172(93)90095-A</ref> [[:file:evaluating-top-and-faul
  4 KB (587 words) - 13:36, 1 April 2022
• Water resistivity determination
  ...le:determination-of-water-resistivity_fig3.png|300px|thumb|{{figure number|3}}Log used in example of calculation of water resistivity. Copyright: the SP * If the bed was too thin for the SP to develop fully (beds thinner than 20 ft), the appropriate correction is applied from the charts.
  13 KB (2,077 words) - 17:26, 18 January 2022
• Static gas pressure gradient estimation
  file:formation-fluid-pressure-and-its-application_fig5-10.png|{{figure number|3}}Estimate gas density. From Schowalter;<ref name=Schowalter1979 /> courtesy ...om [[:file:formation-fluid-pressure-and-its-application_fig5-10.png|Figure 3]].
  7 KB (979 words) - 15:24, 17 February 2022
• Sampling for paleontology
  ...ch joint of drill pipe added to the drill string (i.e., every [[length::30 ft]], or 9 m) and represents an amalgamated sample of the rocks penetrated in ...ch joint of drill pipe added to the drill string (i.e., every [[length::30 ft]], or 9 m). However, the geologist can specify a different interval if nece
  7 KB (1,051 words) - 18:08, 24 January 2022
• Borehole gravity applications: examples
  ...gamma-gamma density log. The broader difference anomaly observed over the length of the interval is explained by the influence of the entire reef complex. ...ity-in-petroleum-exploration_fig15-14.png|left|300px|thumb|{{figure number|3}}Synthetic model of the configuration of a theoretical drawdown gas cone ar
  11 KB (1,596 words) - 18:08, 24 January 2022
• Offshore rigs
  offshore-rigs_fig3.png|{{figure number|3}}Semisubmersible rigs, (a) Pontoon type semisubmersible. (b) Twin hull semi A ''barge rig'' is designed to work in shallow water (less than [[length::20 ft]] deep). The rig is floated to the drillsite, and the lower hull is sunk to
  7 KB (1,016 words) - 16:56, 20 January 2022

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