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• Water saturation
  ...ion?|Archie equation]] is the most widely used method of determining S_w. ...th>\text{Hydrocarbon saturation } (\text{S}_\text{h}) = 1 - \text{S}_\text{w}</math>
  2 KB (227 words) - 13:38, 5 April 2022
• Hydrodynamic influence on trapping
  :<math>\rho_{\rm w} \mbox{gH}_{\rm w} - \rho_{\rm h}\mbox{gH}_{\rm h}</math> * ρ_w = water density
  4 KB (582 words) - 22:08, 17 February 2022
• Water saturation distribution in a reservoir
  ...ize distribution]], and [[Reservoir quality|pore geometry]]. Mapping S_w distribution in a reservoir helps us predict trap boundaries. ...}}Hypothetical example of an S_w–depth plot with estimated S_w distribution curves for several flow units for a hydrocarbon-bearing
  5 KB (687 words) - 17:09, 5 April 2022
• Pickett plot construction
  ....</ref> and therefore is a powerful graphic technique for estimating S_w ranges within a reservoir. All that is needed to make a Pickett plot # Plot R_w point on the R_t scale.
  6 KB (878 words) - 16:16, 5 April 2022
• Formation water density
  ...n the formula below can be used to estimate formation water density (ρ_w):<ref name=ch05r4>Collins, A., G., 1987, Properties of produced water :<math>\rho_{\rm w} = 1 + \mbox{TDS} \times 0.695 \times 10^{-6} \mbox{ g/cm}^{3}</math>
  5 KB (714 words) - 15:19, 13 September 2022
• Midale water saturation and pore geometry
  ==Log response and S_w== ...have the expected effect on log responses and [[water saturation]]s (S_w). The Midale vuggy beds in a cored field well consist of interbeds of
  4 KB (588 words) - 17:01, 12 April 2022
• Hydrocarbon column: calculation of maximum height
  :<math>(\rho_{\rm w} - \rho_{\rm h}) \mbox{g} h = \frac{2\gamma \cos \theta}R</math> ...\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
• Hydrodynamic traps: mapping
  #*<math>\text{H}_{\text{w}} = \text{Z} + \left( \frac{\text{P}} {\text{grad P}} \right)</math> ...left(\frac{\rho_{\rm w}}{\rho_{\rm w} - \rho_{\rm hc}}\right)\mbox{H}_{\rm w}</math>
  4 KB (601 words) - 22:27, 17 February 2022
• Spontaneous potential logs in water resistivity calculation
  ...s in calculating [[water saturation]] using the [[Archie equation]]. R_w can be measured from a sample of formation water taken from the zone To calculate R_w from SP, we need the following data:
  6 KB (1,027 words) - 16:40, 5 April 2022
• Pore system shapes
  ...complex '''non-Archie porosity'''. In most cases, water saturation (S_w) of rocks with Archie porosity can be predicted from log analysis usi ...\mbox{S}_{\rm w} = \left(\frac{1}{\Phi^{\rm m}} \times \frac{\mbox{R}_{\rm w}}{\mbox{R}_{\rm t}}\right)^{\rm 1/n}</math>
  4 KB (528 words) - 13:53, 4 April 2022
• Relative permeability
  ...eservoir system by definition contains water as a single phase (100% S_w). The [[permeability]] of that rock to water is absolute permeability ...ub> of the rock. In other words, as [[buoyancy pressure]] increases, S_w decreases and the effective size of the pore throat for oil or gas fl
  9 KB (1,351 words) - 13:31, 5 April 2022
• Determining water saturation
  ...leum Transactions of AIME 146: 54–62.</ref> which is less expensive. S_w can also be estimated using a graphical representation of the Archie
  2 KB (244 words) - 13:38, 5 April 2022
• Pc curves and saturation profiles
  ==Making s_w profiles from p_c curves== ...ub> can be approximated using information from the curve. To make an S_w profile of a reservoir using a P_c curve, use the table bel
  5 KB (752 words) - 16:53, 4 April 2022
• Hydrodynamics
  Hydraulic head (H_w) is the height or elevation above a given subsurface point at which a :<math>\mbox{H}_{\rm w} = \mbox{Z} + \frac{\mbox{P}}{\rho \mbox{g}}</math>
  5 KB (658 words) - 22:04, 17 February 2022
• Archie equation
  ...on to calculate, from well log parameters, the [[water saturation]] (S_w) of the uninvaded zone in a formation next to a borehole. The Archie :<math>\mbox{S}_{\rm w}{}^{\rm n} = \frac{\mbox{R}_{\rm w}}{(\Phi^{\rm m} \times \mbox{R}_{\rm t})}</math>
  5 KB (703 words) - 13:52, 5 April 2022
• Predicting hydrocarbon recovery
  ...before [[drilling a well]] is a matter of predicting pore volume and S_w. Recovery of hydrocarbons depends on the efficiency of the [[Reservoi ...758 \times \text{A} \times \text{h} \times \Phi \times (1 - \text{S}_\text{w})}{\text{B}_\text{oi}}</math>
  5 KB (691 words) - 17:10, 5 April 2022
• Reef
  ...Mancini et al.<ref>Mancini, E. A., D. J. Benson, B. S. Hart, R. S. Balch, W. C. Parcell, and B. J. Panetta, 2000, [http://archives.datapages.com/data/b ...s. From Zitello et al.<ref>Zitello, A. G., L. J. Bauer, T. A. Battista, P. W. Mueller, M. S. Kendall and M. E. Monaco, 2009, Shallow-Water Ben­ thic Ha
  2 KB (298 words) - 21:30, 21 November 2014
• Capillary pressure (Pc) curves: pore throat size determination
  ...ithin a reservoir system. From a capillary pressure curve at a given S_w, we read the capillary pressure and multiply it by a factor that conv | Pore throat size ( ''r'' ) from S_w
  6 KB (898 words) - 16:21, 4 April 2022
• Sorrento field: water saturation
  ...''in'' S. A. Sonnenberg, L. T. Shannon, K. Rader, W. F. von Drehle, and G. W. Martin, eds., Morrow sandstones of Southeast Colorado and Adjacent Areas: ...ation]]s. One convenient way to do this is to plot water saturation (S_w) against structural elevation while differentiating [[Pore and pore t
  7 KB (1,044 words) - 16:57, 13 April 2022
• Overpressure and hydrocarbon distribution, Gulf Coast
  ...il & Gas Journal, vol. 91, no. 11, p. 71–74.</ref><ref name=ch10r47>Leach, W. G., 1993b, Maximum hydrocarbon window determination in south Louisiana: Oi
  4 KB (605 words) - 20:30, 30 March 2022

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