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  • Spontaneous potential logs in water resistivity calculation
    ...nalysis in calculating [[water saturation]] using the [[Archie equation]]. R<sub>w</sub> can be measured from a sample of formation water taken from the To calculate R<sub>w</sub> from SP, we need the following data:
    6 KB (1,027 words) - 16:40, 5 April 2022
  • True resistivity determination
    ...[formation water]] and hydrocarbons (S<sub>w</sub> < 100%). Using a valid R<sub>t</sub> is fundamental when analyzing well logs for the presence of hyd ==How invasion affects r<sub>t</sub> measurement==
    3 KB (427 words) - 16:16, 5 April 2022
  • Carbonate classification
    ...: AAPG Bulletin, v. 43, p. 1–38.</ref> and Dunham<ref name=pt05r50>Dunham, R. J., 1962, [http://archives.datapages.com/data/specpubs/carbona2/data/a038/
    1,023 bytes (134 words) - 13:25, 27 March 2015
  • Fracture
    ...nics of Rock: London, Academic Press, p. 277–349.</ref><ref>Vincelette, R. R., E. A. Beaumont, and N. H. Foster, 1999, [http://archives.datapages.com/da
    951 bytes (136 words) - 20:39, 10 February 2015
  • Pickett plot construction
    ...rvoir in one or many wells. The Pickett plot<ref name=ch09r45>Pickett, G., R., 1973, Pattern recognition as a means of formation evaluation: The Log Ana # Plot points of matching [[porosity]] and true resistivity (R<sub>t</sub> ) on log-log paper.
    6 KB (878 words) - 16:16, 5 April 2022
  • Formation water density
    ==Procedure: estimating density from r<sub>w</sub>== ...le below to estimate formation water density at reservoir conditions using R<sub>w</sub>. The approximate error is ±10% (after <ref name=ch05r4 />).
    5 KB (714 words) - 15:19, 13 September 2022
  • Accumulation
    ...ols, are traps that contain oil or gas.<ref name=Vincelette>Vincelette, R. R., E. A. Beaumont, N. H. Foster, 2000, [http://archives.datapages.com/data/s
    1 KB (206 words) - 17:37, 27 January 2015
  • AAPG Wiki:Converting content
    <nowiki>re.sub("<blockquote>.*Page [0-9]*-*</blockquote>",r"",str)</nowiki> <nowiki>re.sub("<p><strong>(.*)</strong></p>",r"==\1==",str)</nowiki>
    6 KB (826 words) - 18:27, 1 July 2013
  • Displacement pressure
    ...lacement pressure'' (''P''<sub>d</sub>).<ref>Vavra, C.L., J. G. Kaldi, and R. M. Sneider, [http://archives.datapages.com/data/specpubs/methodo1/data/a09
    557 bytes (82 words) - 14:13, 24 July 2014
  • Midale seal capacity and trap type
    ==Significance of r<sub>bt</sub> for seal capacity== ...(R<sub>bt</sub>) from the [[Weyburn_seal_capacity#Winland.27s_r10|Winland r<sub>10</sub>]] equation is correct, the Midale marly beds do not have the c
    5 KB (723 words) - 17:02, 12 April 2022
  • AAPG Wiki:Test extensions
    :<math>R(\theta ) = R(0) + G \sin^2 \theta + F ( \tan^2 \theta - \sin^2 \theta )\ </math> The time now on the server is {{#time: r|now}} (this should show the current date and time, UTC).
    2 KB (358 words) - 14:35, 24 March 2014
  • Intact top seal
    ...8-0</ref> and Vavra et al.<ref name=ch10r87>Vavra, C. L., J. G. Kaldi, and R. M. Sneider, 1992, [http://archives.datapages.com/data/bulletns/1992-93/dat
    3 KB (357 words) - 15:08, 31 March 2022
  • Forensic geology
    ...nan Doyle, A., The Complete Sherlock Holmes.</ref><ref name=Murray>Murray, R. C., 2011, [http://www.forensicgeology.net/links.htm Evidence from the Eart
    829 bytes (111 words) - 19:21, 16 April 2015
  • Capillary pressure (Pc) curves: pore throat size determination
    ...interfacial tension (γ), the [[wettability]] (Θ), and pore throat radius (r). P<sub>c</sub> increases with decreasing pore throat size, increasing inte :<math>\mbox{P}_{\rm c} = \frac{2\gamma \cos \Theta}{\mbox{r}}</math>
    6 KB (898 words) - 16:21, 4 April 2022
  • Rock quality
    ...h more effective for determining quality. The K<sub>a</sub>/Φ ratio or the r<sub>35</sub> method yields information about the fluid flow and storage qua ...luid flow efficiency and storage, as shown by the K<sub>a</sub>/Φ ratio or r<sub>35</sub>, flow unit 2 is actually the better rock.
    10 KB (1,534 words) - 16:53, 4 April 2022
  • Archie equation
    ...{S}_{\rm w}{}^{\rm n} = \frac{\mbox{R}_{\rm w}}{(\Phi^{\rm m} \times \mbox{R}_{\rm t})}</math> * R<sub>w</sub> = formation water resistivity at formation temperature
    5 KB (703 words) - 13:52, 5 April 2022
  • Top seal displacement pressure
    :<math>\mbox{P}_{\rm d} = \frac{(2\gamma \cos \theta)}{\mbox{R}}</math> * R = pore throat radius, cm
    4 KB (530 words) - 15:56, 31 March 2022
  • Vitrinite reflectance
    ...It is referred to as %R<sub>o</sub>. Results are often presented as a mean R<sub>o</sub> value based on all vitrinite particles measured in an individua ...e|vitrinite]] is a [[Kinetics|kinetic]] process. The relationship between %R<sub>o</sub> and [[Petroleum generation|hydrocarbon generation]] is dependen
    7 KB (970 words) - 14:28, 10 February 2022
  • Displacement pressure estimation from pore size
    :<math>\mbox{P}_{\rm d} = \frac{-2\gamma \cos \theta}{\mbox{r}}</math> ==Techniques for estimating ''r''==
    5 KB (766 words) - 22:55, 2 February 2016
  • Sequence stratigraphy analysis
    | author = S. R. Jacobson ...agoner et al.<ref>Van Wagoner, J. C., H. W. Posamentier, R. M. Mitchum, P. R. Vail, J. F. Sarg, T. S. Loutit, and J. Hardenbohl, 1988, An overview of th
    4 KB (612 words) - 17:39, 13 April 2022
  • Great American carbonate bank
    | author = R. D. Fritz, W, A. Morgan, S. Longacre, J. R. Derby, C. A. Sternbach ...vician (early Tremadocian): The Stonehenge transgression], in J. R. Derby, R. D. Fritz, S. A. Longacre, W. A. Morgan, and C. A. Sternbach, eds., The gre
    5 KB (768 words) - 18:39, 1 August 2016
  • Water resistivity determination
    ...ater samples, if available, are invariably contaminated by mud filtrate. ''R''<sub>w</sub> is therefore usually calculated, and there are three methods ...a more saline interstitial water than the drilling mud (''R''<sub>w</sub> R<sub>mf</sub>).
    13 KB (2,077 words) - 17:26, 18 January 2022
  • Structural analogies
    | author = R.A. Nelson, T.L. Patton, S. Serra * Morley, C. K., Nelson, R. A., Patton, T. L., Munn, S. G., 1990, [http://archives.datapages.com/data/
    4 KB (579 words) - 20:52, 2 February 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
  • Reef
    ...9–1717</ref> and modified from Balch and Hart.<ref>Hart, B. S., and Balch, R. S., 2000, Approaches to defining reservoir physical properties from 3-D se
    2 KB (298 words) - 21:30, 21 November 2014
  • Shale smear factor
    ...etin, v. 73, p. 1397-1414.</ref><ref>Fulljames, J. R., L. J. J. Zijerveld, R. C. M. W. Franssen, G. M. Ingram, and P. D. Richard, 1996, Fault seal proce
    3 KB (437 words) - 20:02, 13 December 2016
  • Structural geology fieldwork
    | author = R.A. Nelson, T.L. Patton, S. Serra * Fermor, P., R., Price, R., A., 1987, Multiduplex structure along the base of the Lewis thrust sheet
    4 KB (557 words) - 20:06, 2 February 2022
  • Pore system shapes
    ...\rm w} = \left(\frac{1}{\Phi^{\rm m}} \times \frac{\mbox{R}_{\rm w}}{\mbox{R}_{\rm t}}\right)^{\rm 1/n}</math> * R<sub>w</sub> = formation water resistivity at formation temperature
    4 KB (528 words) - 13:53, 4 April 2022
  • Barnett shale play
    ...otal Petroleum System. From Pollastro.<ref>Pollastro, R. M., D. M. Jarvie, R. J. Hill, & C. W. Adams, 2007, [http://archives.datapages.com/data/bulletns ...tial]: AAPG Bulletin, v. 89, no. 2, pp. 155-175.</ref> and Hill,<ref>Hill, R. J., E. Zhang, B. J. Katz, & Y. Tang, 2007, [http://archives.datapages.com/
    6 KB (909 words) - 19:24, 14 March 2019
  • Taphonomy and provenance
    ...diments.<ref name=ch17r55>Lawrence, D. R., 1979, Taphonomy, in Fairbridge, R., W., Jablonski, D., eds., The Encyclopedia of [[Paleontology]]: Stroudsbur ...ic processes and skeletal durability, in Briggs, D., E., G., Crowther, P., R., eds., Palaeobiology: A Synthesis: Oxford, Blackwell Scientific Publicatio
    3 KB (449 words) - 18:12, 31 January 2022
  • Seismic data
    | author = R.A. Nelson, T.L. Patton, S. Serra * Telford, W., M., Geldart, L., P., Sheriff, R., E., 1990, Applied Geophysics: Cambridge, Cambridge University Press, 770
    5 KB (712 words) - 21:27, 2 February 2022
  • Displacement pressure estimation from sedimentary facies and well logs
    ...lletin, vol. 76, no. 6, p. 840–850.</ref><ref name=ch10r68>Shea, W. T., J. R. Schwalbach, and D. M. Allard, 1993, Integrated rock-log evaluation of fluv ...AAPG Hedberg Research conference, unpublished abstract.</ref><ref>Sneider, R. M., and J. Neasham, 1993, Comparison of seal capacity determination (SCD)
    5 KB (764 words) - 19:46, 31 March 2022
  • Toe
    | author = Timothy R. Carr, Erik P. Mason, Charles T. Feazel
    1 KB (155 words) - 19:36, 3 March 2016
  • Weyburn seal capacity
    :<math>\mbox{h} = \frac{0.670 \times \gamma \cos \theta}{\mbox{R}_{\rm bt}(\rho_{\rm w} - \rho_{\rm h})}</math> * R<sub>bt</sub> = breakthrough pore throat size (μ)
    10 KB (1,484 words) - 20:55, 4 December 2023
  • Kerogen type and maturity
    ...il you reach the maturity profile. This vitrinite reflectance value (0.55 %R<sub>o</sub> ) would indicate the onset of hydrocarbon generation in this we ! [[vitrinite reflectance|Vitrinite refl.]], % R<sub>o</sub>, Type II
    4 KB (503 words) - 14:18, 14 February 2022
  • Hydrodynamic flow and pressure transients
    ...w York, Springer-Verlag, 161 p.</ref><ref name=ch10r50>Lerche, I. Thomsen, R. O., 1994, Hydrodynamics of Oil and Gas: New York, Plenum Press, 308 p.</re ...dramatically during faulting and basin evolution.<ref name=ch10r69>Sibson, R. H., J. Moore, and A. H. Rankin, 1975, Seismic pumping—a hydrothermal flu
    4 KB (477 words) - 14:34, 1 April 2022
  • Traps in a framework of sequence stratigraphy
    ...stratigraphic models by Baum & Vail.<ref name=ch21r6>Baum, G. R., Vail, P. R., 1988, Sequence stratigraphic concepts applied to Paleogene outcrops, Gulf ...ns. After Van Wagoner et al.<ref name=ch21r47>Van Wagoner, J. C., Mitchum, R. M., Campion, K. M., Rahmanian, V. D., 1990, Siliciclastic Sequence stratig
    4 KB (486 words) - 14:57, 4 February 2022
  • Fracture analysis
    | author = R.A. Nelson, T.L. Patton, S. Serra * Kulander, B. R., S. L. Dean, and B. J. Ward, Jr., 1990, Fractured Core Analysis: Interpret
    5 KB (644 words) - 15:30, 3 February 2022
  • Combination trap
    | author = Richard R. Vincelette, Edward A. Beaumont, Norman H. Foster ...ed from Vincelette and Foster.<ref name=VinceletteandFoster>Vincelette, R. R., and N. H. Foster, 1992, Fractured Niobrara of Northwestern Colorado, ''in
    4 KB (538 words) - 18:47, 12 April 2022
  • Diapir
    ...B horizon. From Yin and Groshong.<ref name=Yinandgroshong_2007>Yin, H. and R. H. Groshong Jr., 2007, [http://archives.datapages.com/data/bulletns/2007/0
    1 KB (142 words) - 15:58, 6 April 2015
  • Basin-centered gas systems: gas resources
    ...96-264, 67 p.</ref> and Big Horn<ref name=Johnsonetal_1999>Johnson, R. C., R. A. Crovelli, B. G. Lowell, and T. M. Finn, 1999, An assessment of in-place ...National Petroleum Council, 222 p.</ref> || ICF<ref name=ICF_1990>Haas, M. R., 1990, Impact of improved technology on potential reserves of tight gas in
    9 KB (1,242 words) - 15:47, 11 March 2015
  • San Juan basin
    ...erior of the United States.<ref name=Thadenandzech_1986>Thaden, R. E., and R. S. Zech, 1986, [http://archives.datapages.com/data/specpubs/mineral1/data/
    3 KB (411 words) - 15:01, 11 January 2016
  • Cross-leaking fault
    ...and-fault-seal_fig10-1.png|{{figure number|1}}Two sands, R<sub>u</sub> and R<sub>d</sub>, juxtaposed by a fault. The two sands have common oil-water (O ...p-and-fault-seal_fig10-1.png|Figure 1]] shows two sands, R<sub>u</sub> and R<sub>d</sub>, juxtaposed by a fault. The two sands have common [http://www.g
    8 KB (1,155 words) - 21:31, 24 March 2022
  • Petrofabrics
    | author = R.A. Nelson, T.L. Patton, S. Serra * Allmendinger, R., W., 1982, Analysis of microstructures in the Meade plate of the Idaho–W
    4 KB (447 words) - 15:17, 3 February 2022
  • Isochron
    | author = I. R. Gordon
    1 KB (135 words) - 14:13, 24 November 2015
  • Multilateral well
    | author = Timothy R. Carr, Erik P. Mason, Charles T. Feazel
    1 KB (187 words) - 15:44, 26 April 2016
  • Bend
    | author = Timothy R. Carr, Erik P. Mason, Charles T Feazel
    1 KB (173 words) - 15:33, 16 March 2016
  • Multilevel well
    | author = Timothy R. Carr, Erik P. Mason, Charles T. Feazel
    1 KB (183 words) - 15:42, 26 April 2016
  • Spore coloration and thermal alteration indices (SCI and TAI): usage
    ...CI and TAI scales have been standardized to the [[vitrinite reflectance]] (R<sub>o</sub>) maturity scale. Users of SCI and TAI data need to have access ! [[Vitrinite reflectance]] (%R<sub>o</sub>) || Spore coloration index (SCI) || Thermal alteration index (T
    3 KB (335 words) - 14:39, 10 February 2022
  • Build rate
    | author = Timothy R. Carr, Erik P. Mason, Charles T Feazel
    1 KB (174 words) - 19:33, 3 March 2016

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