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• Morrow lithofacies and pore types: Sorrento field
  ...(K_a) are as great as 1-2 darcies but more commonly are 200-500 md.
  6 KB (769 words) - 17:23, 11 April 2022
• Overview of routine core analysis
  ...nventional core analysis. Sidewall cores from formations with more than 20 md permeability consistently have a measured permeability that is lower than t Low permeability, hard formations (''k'' k > 20 md), friable, or unconsolidated sandstones are usually reduced by 60% or more
  14 KB (2,121 words) - 21:16, 19 January 2022
• Production testing
  * ''k'' = permeability (md) To solve for permeability, an arbitrary value of permeability is assumed (0.1 md is often a good first estimate), and Equation 2 is solved for ''r''<sub>d</
  14 KB (2,165 words) - 18:42, 20 January 2022
• Well planning
  * Anticipated total depth (TD) in measured depth (MD) and TVD (true vertical depth)
  6 KB (779 words) - 15:09, 24 January 2022
• Fluid flow fundamentals
  ...s of various metric, English, and oil field units. It uses the millidarcy (md) for permeability. Other dimensions and units in this system are as follows * ''k'' = permeability (md)
  20 KB (3,155 words) - 21:20, 19 January 2022
• Glossary
  ;MD:measured depth
  5 KB (840 words) - 13:51, 18 March 2019
• Wireline formation testers
  ...igure 5]] illustrate typical records for sandstones at 0.1, 1, 10, and 100 mD (millidarcys). While these figures are qualitative, quantitative techniques
  10 KB (1,446 words) - 17:42, 18 January 2022
• Drill stem testing
  | md | md-ft/cp
  26 KB (4,009 words) - 15:09, 24 January 2022
• Basin-centered gas systems: examples
  * Permeability: <0.1 md (in-situ) * Permeability: <0.1 md<ref name=Ryder_1998 /><ref name=Ryderandzagorski_2003 />
  25 KB (3,445 words) - 19:01, 14 March 2016
• Bakken and Three Forks Formations, Williston Basin, North Dakota and Montana (USGS)
  | Permeability (md) || Variable, Sandstones: 0.1; Dolomite: 0.01
  11 KB (1,595 words) - 20:20, 2 June 2021
• Core-to-log transformations and porosity-permeability relationships
  ...ermeability-relationships_fig5.png|Figure 5]], a minimum permeability of 1 md corresponds to a porosity cutoff of 5.3% in [[conglomerate]] and 10.7% in [
  14 KB (1,893 words) - 20:15, 2 February 2016
• Relationship between porosity and permeability on fractured basement reservoir
  ...ed be expressed as fractions and fracture width and permeability in cm and mD, respectively. Fracture porosity can be directly estimated using the formul ...^{2.63} = 1.5 \times 10^7 (0.17) [(1 - 0.24) 0.1417]^{2.63} = 7.265 \text{ mD}</math>
  29 KB (4,601 words) - 16:09, 12 April 2016
• Wattenberg field
  ...e reservoirs are regarded as tight with low permeabilities (generally <0.1 md). Fractures are noted in cores and are thought to contribute to production. ...pay thickness 10–50 ft, porosity range 8%–12%, permeability range 0.1–0.05 md, reservoir temperature 260°F, reservoir pressure 2750 psig, average water
  72 KB (10,249 words) - 20:06, 15 January 2024
• Pressure transient testing
  * ''k'' = effective permeability to produced phase (md)
  15 KB (2,314 words) - 17:45, 21 January 2022
• Reservoir engineering
  Porosity (Phi) 5, permeability (k) mD, fluid saturation (S) %, capiler pressure (Pc) Psi, compressibility (C) Psi
  14 KB (2,122 words) - 17:33, 7 March 2016
• Petroleum basins of Turkey
  .... Deltaic sands of Oligocene-Early Miocene have 10–23% porosity and 0.1–10 md permeability. Oligocene-Early Mioceneage deltaic sand is a gas producer, Ol
  52 KB (7,769 words) - 20:28, 18 January 2017
• Carbonate reservoir
  ...iven the very fine-grained nature of the rock, permeabilities are low; 1–7 md is typical of the productive intervals. Factors influencing porosity preser ...d high porosity chalk with 30–50% porosity and permeabilities between 1–10 md.
  38 KB (5,571 words) - 15:31, 16 January 2024
• Basin-centered gas systems: evaluation and exploration strategies
  ...producible water) in conjunction with porosity (<13%), permeability (<0.1 md), thermal maturation (>0.7% Ro) data, and sustained gas shows are very usef ! Type || Source rocks || Reservoir in-situ permeability (md) || [[Hydrocarbon migration]] distance || Reservoir pressure || Pressure me
  34 KB (5,070 words) - 15:11, 23 August 2016
• Deltaic reservoirs
  ...Alaska. The mouth bars have a mean permeability of 151 md compared to 315 md for the distributary channel fills.
  34 KB (4,776 words) - 18:18, 5 January 2024
• Faults: structural geology
  ...10-m (16–32-ft)-length scales across the fault zone was estimated as 30–40 md. This is approximately 1–4% of the permeability for the undeformed host r
  63 KB (9,496 words) - 16:51, 15 January 2024

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