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• Geochemical surface expression
  * Anomalous [[hydrocarbon]] concentrations in sediment, soil, water, and even the atmos * Anomalous nonhydrocarbon gases such as helium and radon
  4 KB (493 words) - 22:00, 31 January 2022
• Seepage activity and surficial geochemistry
  ...s. Acoustic anomalies may be present, but water column anomalies are rare. Anomalous levels of hydrocarbon seepage may only be detectable near major leak points ...dimentary and biological processes alter or destroy volatile hydrocarbons. Anomalous concentrations of hydrocarbons may not be detectable if samples are not obt
  4 KB (482 words) - 21:00, 31 January 2022
• Interpreting gravity measurements
  ...ribution if there are no [[lateral]] changes. Layer-cake geology yields no anomalous gravity signal. A bed is considered infinite and horizontal if it is about
  5 KB (725 words) - 18:00, 24 January 2022
• Buoyancy pressures and hydrocarbon presence
  # Check to see if anomalous pressures make geological sense.
  3 KB (387 words) - 18:56, 16 February 2022
• Stratigraphically complex fields
  * Anomalous changes in pressure gradient * Anomalous fluid relationships (such as a gas zone underlying an oil zone or an oil zo
  8 KB (983 words) - 20:49, 19 January 2022
• Gravity anomaly models
  The gravity response is related directly to the amount of anomalous mass. Size differences in three dimensions are X³ functions. [[:
  4 KB (551 words) - 14:51, 31 January 2022
• Magnetics: total intensity and residual magnetic maps
  ...intensity maps show larger scale geologic features, such as basin shape or anomalous rock types deep within the basement.
  4 KB (618 words) - 19:55, 27 January 2022
• Gravity basics
  Gravity methods help us identify the size, shape, and depth of anomalous masses. Gravity effectively images [[lateral]] density contrasts within the
  5 KB (720 words) - 17:59, 24 January 2022
• Macroseepage vs. microseepage in surficial geochemistry
  ...s, or waters. These invisible seeps are recognized only by the presence of anomalous concentrations of the following:
  6 KB (754 words) - 22:07, 24 January 2022
• Amplitude versus offset (AVO) analysis
  * ''AVO scanning''—Find anomalous regions of amplitude with offset on seismic data. ...trapping areas. The purpose of this step is to identify quickly regions of anomalous AVO behavior, which can then be studied further with detailed modeling and
  12 KB (1,723 words) - 18:41, 20 January 2022
• The gravity method
  ...ed values to produce ''gravity anomalies'' that are caused by rocks having anomalous density in comparison with the density of the surrounding rocks.
  6 KB (854 words) - 16:19, 20 January 2022
• Designing a surficial geochemical survey
  ...nherently noisy and require adequate sample density to distinguish between anomalous and background areas. Matthews<ref name=ch18r26 /> reviews the importance o
  6 KB (826 words) - 17:33, 25 January 2022
• Petrophysical analysis of Sorrento field wells
  Well 1 is similar to well 8, except that flow unit 2 of well 1 shows an anomalous low resistivity. The interval tested 32 bo/d and 15 Mcfg/d (5 m³
  7 KB (956 words) - 17:24, 11 April 2022
• Borehole gravity applications: examples
  ...l. The density difference detects the distant density contrast as a broad, anomalous low with its minimum centered at the correct depth. Such a zone may be with
  11 KB (1,596 words) - 18:08, 24 January 2022
• Statistics overview
  ...cases, plotting of data reveals the nature of the data set and outliers or anomalous data points to review for accuracy or measurement error and can indicate th
  16 KB (2,483 words) - 19:28, 19 January 2022
• Fluid contacts
  ...uction problems#Water-gas coning|Coning]], [[degassing]], etc. may lead to anomalous recoveries
  19 KB (2,690 words) - 21:20, 19 January 2022
• Show evaluation
  ...of Mining and Metallurgy, Paper 81-32-20.</ref>. However, the presence of anomalous, noncombustible gases such as nitrogen or carbon dioxide can attenuate hydr
  18 KB (2,670 words) - 18:21, 21 January 2022
• Carbonate diagenesis
  ...in particular) is not related to particle size because of the presence of anomalous concentrations of [[uranium]]. [[Calculating Sw from the Archie equation|Wa
  23 KB (3,026 words) - 20:48, 19 January 2022
• Fractured reservoir evaluation
  #* Anomalous flow rates<ref name=pt06r1 />
  26 KB (3,674 words) - 21:21, 19 January 2022
• Basin-centered gas systems: development
  ...ansition, Meissner<ref name=Meissner_2000>Meissner, F. F., 2000, Causes of anomalous deep basin fluid pressures in Rocky Mountain basins and their relation to r
  34 KB (4,772 words) - 14:44, 12 March 2019

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