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• Distributary channel
  * [http://www.searchanddiscovery.com/documents/nanz/images/23.htm Gamma-ray and resistivity response]
  419 bytes (57 words) - 15:36, 6 January 2015
• Special field techniques
  ==Outcrop gamma-ray logging==
  3 KB (412 words) - 22:40, 1 February 2022
• Capillary pressure (Pc): buoyancy, height, and pore throat radius
  ...P_{\text{c system2}} \left ( \frac{\gamma \cos \Theta \text{ of system1}}{\gamma \cos \Theta \text{ of system2}} \right )</math> ...c res}} = P_{\text{c lab}} \left ( \frac{\gamma \cos \Theta_{\text{res}}}{\gamma \cos \Theta_{\text{lab}}} \right )</math>
  6 KB (850 words) - 17:22, 4 April 2022
• Cased hole tools
  | rowspan = 2 | Correlation || [[Basic open hole tools#Gamma ray|Gamma ray]] | Spectral gamma ray
  10 KB (1,427 words) - 16:26, 18 January 2022
• Seismic data: identifying reflectors
  ...open hole tools#Resistivity|electric]], [[Basic open hole tools#Gamma ray|gamma ray]], etc.). It is important to realize that a sonic log never goes to the
  2 KB (348 words) - 19:10, 27 January 2022
• Using conventional well logs to estimate richness
  ...e measured using density sonic, neutron, [[Basic open hole tools#Gamma ray|gamma ray]], and [[Basic open hole tools#Resistivity|resistivity logs]]. The tabl | Gamma ray (GR) or uranium (U) || High || High GR caused by U; can be linear with
  5 KB (768 words) - 15:48, 9 February 2022
• Borehole gravity applications: examples
  ...nts. (right) Density values measured by the BHGM (left line) and the gamma-gamma tools (right line). Copyright: Rasmussen;<ref name=Rasmussen>Rasmussen, N. ...w is caused by a remote higher [[porosity]] zone not detected by the gamma-gamma density log. The broader difference anomaly observed over the length of the
  11 KB (1,596 words) - 18:08, 24 January 2022
• Hydrocarbon column: calculation of maximum height
  :<math>(\rho_{\rm w} - \rho_{\rm h}) \mbox{g} h = \frac{2\gamma \cos \theta}R</math> :<math>h = \frac{\left(\displaystyle\frac{2\gamma \cos \theta} R \right)}{(\rho_{\rm w} - \rho_{\rm h})\mbox{g}}</math>
  3 KB (488 words) - 16:13, 31 March 2022
• Tool table
  | [[Basic open hole tools#Gamma ray|Gamma ray]] || 6 || 20 || √ || √ || √ || √ || √ || √ || – || – || | Spectral [[Basic open hole tools#Gamma Ray|GR]] || 6 || 20 || √ || √ || √ || NR || √ || √ || NR || – |
  5 KB (544 words) - 16:27, 18 January 2022
• Logging while drilling
  ...can include standard measurements of the formation (electric logs such as gamma ray, resistivity, or porosity), drilling parameters (e.g., downhole torque,
  2 KB (206 words) - 21:17, 3 December 2015
• Measurement while drilling
  ...while drilling (MWD) technology provides downhole evaluation of formation gamma ray, resistivity, and [[porosity]] while drilling is in progress. Mechanica ...servoir evaluation in the past 10 years. [[Basic open hole tools#Gammy ray|Gamma ray]], resistivity, and porosity logs obtained during drilling are commonly
  8 KB (1,083 words) - 21:18, 19 January 2022
• Borehole gravity
  ...y between 6330 and 6370 ft is caused by porosity not detected by the gamma-gamma [[density log]]. The broader difference anomaly observed over the length of ...r poor volume sampling. However, the broad departure of the BHGM and gamma-gamma logs over the depth range of the logged section is typical of a structural
  10 KB (1,517 words) - 15:54, 20 January 2022
• Well log analysis for reservoir characterization
  | Gamma Ray (GR) || Lithology interpretation, shale volume calculation, calculate c [[File:Well_Log_Analysis_Fig-3.png|thumb|300px|Figure 3-The use of gamma ray log to determine the lithology.<ref>Railsback, 2011, Characteristics of
  25 KB (3,679 words) - 21:17, 13 March 2019
• Borehole gravity tool
  | Gamma-gamma log || 8 || 20 || 17 || 0.5
  5 KB (720 words) - 18:07, 24 January 2022
• Capillary pressure (Pc) curves: pore throat size determination
  :<math>\mbox{P}_{\rm c} = \frac{2\gamma \cos \Theta}{\mbox{r}}</math> :<math>\mbox{r} = \frac{2\gamma \cos \Theta}{\mbox{P}_{\rm c}}</math>
  6 KB (898 words) - 16:21, 4 April 2022
• Open hole tools
  | Gamma ray ...ces make use of three different physical phenomena: spontaneous potential, gamma rays, and photoelectric effect. Table 2 shows the resolution and applicatio
  23 KB (3,350 words) - 17:26, 18 January 2022
• Preprocessing of logging data
  ...wise to select the gamma ray from the induction tool as the base log. The gamma ray from the density curve and all curves recorded with the density are the :A core gamma ray can be a valuable aid in establishing depth correlations between core a
  13 KB (2,094 words) - 17:42, 18 January 2022
• Density-neutron log porosity
  ...source, counts the number of returning gamma rays. The number of returning gamma rays is an indicator of formation bulk density. The litho-density tool (LDT
  12 KB (1,763 words) - 16:18, 5 April 2022
• Quick-look lithology from logs
  * [[Basic open hole tools#Gamma ray|Gamma ray]] ==Gamma ray logs==
  25 KB (3,637 words) - 19:39, 18 January 2022
• Standard interpretation
  ...otential (SP)]]. The most common methods for estimating shale volumes from gamma ray and SP logs are outlined here. Other measurements can be used under spe ===Shale volume from gamma ray===
  25 KB (3,776 words) - 19:53, 18 January 2022

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