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• Procedure for geometrical analysis
  * [[Basic open hole tools#Gamma ray|Gamma-ray]] log changes in response to increased uranium concentration at exposur
  6 KB (862 words) - 15:20, 4 February 2022
• Well planning
  ...tions and order of logging runs (usually [[Basic open hole tools#Gamma ray|gamma ray]], deep resistivity, [[porosity]], sonic, pad-type resistivity, [[dipme
  6 KB (779 words) - 15:09, 24 January 2022
• Rate of penetration
  ...on_fig2.png|300px|thumb|{{figure number|2}}Example of correlating ROP with gamma ray curves.]] ...can be used to correlate to nearby wells. This is done by comparing ROP to gamma ray or SP curves ([[:file:rate-of-penetration_fig2.png|Figure 2]]). This co
  7 KB (1,049 words) - 19:02, 20 January 2022
• Production logging
  ...Such an instrument has either one or two [[Basic open hole tools#Gamma ray|gamma]] ray detectors spaced below the ejector. By various techniques, the operat ...ng_fig3.png|Figure 3]]. The tool is stationary during such a test, and the gamma count rate is recorded at the surface. In [[:file:production-logging_fig3.p
  12 KB (1,726 words) - 16:48, 20 January 2022
• Recognizing stacked depositional sequences from well data
  ...h in calcareous nannoplankton and foraminiferal fossils and having maximum gamma-ray values are interpreted to correlate with condensed depositional interva ...n of stacked depositional sequences. The [[Basic open hole tools#Gamma ray|gamma-ray]] log display provides a measure of sediment type, with curve deflectio
  14 KB (1,901 words) - 15:16, 9 January 2024
• Top seal displacement pressure
  :<math>\mbox{P}_{\rm d} = \frac{(2\gamma \cos \theta)}{\mbox{R}}</math>
  4 KB (530 words) - 15:56, 31 March 2022
• Molyneux:sandbox
  * [[Spectral gamma ray]]
  5 KB (543 words) - 23:45, 8 January 2015
• Migration rate calculation
  ...es \mbox{l} \times \sin \mbox{Q} \times (\rho_{\rm w} - \rho_{\rm hc}) > 2\gamma</math>
  4 KB (618 words) - 19:40, 14 February 2022
• Tight gas reservoirs: evaluation
  ...ok lithology from logs]]). Commonly, the [[Basic open hole tools#Gamma ray|gamma ray]] log provides the most distinctive log signature for individual facies
  11 KB (1,444 words) - 21:26, 4 January 2024
• Carbonate diagenesis
  ...te]]s, commonly have the highest gamma ray activity. However, the level of gamma ray activity in some carbonates ([[dolostones]] in particular) is not relat
  23 KB (3,026 words) - 20:48, 19 January 2022
• Cross section
  ...hole tools#Spontaneous potential|SP]] or [[Basic open hole tools#Gamma ray|gamma ray]] trace and the right track is a resistivity trace. (From Slatt et al.< ...hole tools#Spontaneous potential|SP]] or [[Basic open hole tools#Gamma ray|gamma ray]] log and one [[Basic open hole tools#Resistivity|resistivity log]] are
  20 KB (3,029 words) - 16:09, 24 January 2022
• Arecuna field
  ...on well-log traces) occurring above successive, laterally persistent high gamma-ray (or minimum spontaneous potential [SP]) shale markers that are interpre ...jpg|Figure 6]]). Interbedded mudstones displaying thin, spiky, and serrate gamma-ray and SP log motifs accumulated in the interaxial areas where intermitten
  16 KB (2,381 words) - 19:03, 11 March 2019
• Lithofacies and environmental analysis of clastic depositional systems
  | [[Core gamma scan]] | [[Basic open hole tools#Gamma ray|Gamma ray]] log
  38 KB (5,198 words) - 22:11, 15 January 2024
• Data: sources
  ...crepancies in the core log. Comparison of the core gamma with the wireline gamma log allows the core-to-log shift to be determined. This is important for ma | Gamma ray log || Measures the natural gamma-ray response of the rock || Well-log correlation, lithology identification;
  43 KB (6,686 words) - 13:44, 18 March 2019
• Pressure prediction: analysis of well-log and seismic data
  | Gamma ray || May decrease slightly || May increase slightly
  5 KB (733 words) - 17:57, 17 February 2022
• Displacement pressure estimation from pore size
  :<math>\mbox{P}_{\rm d} = \frac{-2\gamma \cos \theta}{\mbox{r}}</math>
  5 KB (766 words) - 22:55, 2 February 2016
• Core-to-log transformations and porosity-permeability relationships
  ...r depth control and can be of great assistance only if there is sufficient gamma ray activity in the core to provide precise boundaries. Should closely spac
  14 KB (1,893 words) - 20:15, 2 February 2016
• Log analysis: lithology
  ...tones containing potassium feldspars or thorium-bearing clays. The natural gamma ray spectra, Pe, density, and neutron expanded response equations can be co * [[Spectral gamma ray]]
  25 KB (3,189 words) - 17:24, 18 January 2022
• Marcellus Shale (Devonian) -- Appalachian Basin
  ...Project (EGSP), there is a strong relationship between higher-than-normal gamma ray response and total gas content in the black, organic-rich Marcellus Sha ...ral length of 20,060 ft (Boyer, 2021, Gough, 2020). The organic-rich, high gamma ray portion of the Marcellus Shale is thickest in southwestern and north-ce
  19 KB (2,773 words) - 21:36, 4 March 2022
• Core description
  ...tential|spontaneous potential (SP)]] and [[Basic open hole tools#Gamma ray|gamma ray]] curves. Grain size is determined by comparison with a chart made of s
  13 KB (1,786 words) - 20:50, 19 January 2022

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