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• Designing a surficial geochemical survey
  ...s.com/data/specpubs/memoir66/18/0243.htm Importance of sampling design and density in target recognition], in D. Schumacher and M. A. Abrams, eds., Hydrocarbo ==Sample density==
  6 KB (826 words) - 17:33, 25 January 2022
• Hydrocarbon column: calculation of maximum height
  * ''ρ_w'' = density of water, g/cm³ * ''ρ_h'' = density of hydrocarbon, g/cm³
  3 KB (488 words) - 16:13, 31 March 2022
• Hydrodynamic traps: mapping
  ...ynamic traps. Combining formation fluid pressures with other data, such as density and subsea elevation, produces maps that help outline areas where hydrodyna #*Note: Use gas density where gas is expected and oil density where oil is expected.
  4 KB (601 words) - 22:27, 17 February 2022
• Hydrofractured seal leakage
  ...static pressure gradient is estimated from [[Basic_open_hole_tools#Density|density logs]] or [[porosity]] trend. * Petroleum density is estimated from the gas-oil ratio (GOR), [[API gravity]], temperature, an
  5 KB (679 words) - 17:11, 1 February 2022
• Fluid-composition trap regime
  ...bility]], [[Wikipedia:Miscibility|immiscibility]], and [[Wikipedia:Density|density]] contrasts between [[hydrocarbon]]s and water are major factors that allow
  3 KB (402 words) - 16:31, 13 April 2022
• Synthetic seismogram
  Velocity data from the sonic log (and the [[density log]], if available) are used to create a synthetic seismic trace. This tra ...ves are digitized at a sample interval of 0.5 to [[length::1 ft]]. (If the density curve is not available, the sonic alone may be used.)
  8 KB (1,199 words) - 13:57, 24 January 2022
• Formation evaluation of naturally fractured reservoirs
  ===Correction curve on the compensated density log=== The Δρ (delta rho) curve corrects the [[Basic open hole tools#Density|density log]] for the effect of rough borehole and mud cake. As such, the correctio
  9 KB (1,380 words) - 17:25, 18 January 2022
• Seismic data display
  In exploration seismology, reflections are recorded from velocity or density contrasts in the rock sequence. By SEG convention, an increase in velocity, ...trace, (b) variable area, (c) variable area wiggle trace, and (d) variable density. Copyright: Conoco Inc.]]
  9 KB (1,404 words) - 21:17, 19 January 2022

• File:Mth16Ch7Figure7-1.jpg Using this scanning technique in combination with the neutron-density quick-look technique discussed in Chapter 4 of Basic Well Log Analysis, 2nd (400 × 528 (39 KB)) - 16:08, 21 May 2014

• Hydrostatic pressure gradient
  * [[Estimating formation water density]]
  2 KB (207 words) - 18:56, 16 February 2022
• Gravity data processing
  | Elevation & surface density | Detailed topography & surface density
  4 KB (519 words) - 14:16, 31 January 2022
• Factors that cause migration
  ...ity is less than that of water. This buoyancy force is proportional to the density difference and the height of the [[hydrocarbon column]]. It acts vertically ...ssure (P) decreases the buoyancy force as the hydrocarbons are buried. The density of hydrocarbons increases more rapidly than that of water as pressure incre
  6 KB (918 words) - 15:16, 14 February 2022
• Seismic data interpretation - recurring themes
  ...effect, an edge detection technique. The bigger the [[velocity]] and/or [[density]] contrast between the rocks, the stronger the edge. ...uding a [[Fluid contacts|fluid contact]], [[porosity]] variation, or shale density change.
  5 KB (739 words) - 18:51, 27 January 2022
• Hydrodynamic influence on trapping
  * ρ_w = water density * ρ_h = [[hydrocarbon]] density
  4 KB (582 words) - 22:08, 17 February 2022
• Buoyancy forces in reservoir fluids
  ...the oil-water interface and the force of gravity acting together with the density contrast between the reservoir fluids, tending to pull the water down. ...rocarbon-water interface and the force of gravity acting together with the density contrast between the reservoir fluids, acting to pull the water down.<ref n
  8 KB (1,182 words) - 20:27, 3 March 2016
• Seismic data preparation for mapping
  # Compute a synthetic seismogram for each online well with a sonic or [[density log]]. .... Another option is to convert sonic log (or velocity, density, velocity * density) to time and directly overlay onto the seismic section being interpreted. F
  7 KB (1,064 words) - 19:11, 27 January 2022
• Standard interpretation
  ...ty formations, the compensated neutron in very low porosity formations, or density versus neutron crossplots in known lithologies. ...ic|sonic]] logs. When using a single porosity measuring device such as the density, neutron, or sonic, assumptions are normally required to estimate porosity.
  25 KB (3,776 words) - 19:53, 18 January 2022
• Determining water saturation
  * [[Determining porosity from density-neutron logs]]
  2 KB (244 words) - 13:38, 5 April 2022
• Preprocessing of logging data
  ...log. The gamma ray from the density curve and all curves recorded with the density are then shifted to match the induction log depths. The base curve should a ...epth shifts required. Core bulk density usually correlates well with the [[density log]] because lithologic variations are eliminated, resulting in two simila
  13 KB (2,094 words) - 17:42, 18 January 2022
• The gravity method
  ...' that are caused by rocks having anomalous density in comparison with the density of the surrounding rocks. ...in aircraft, and in boreholes.<ref name=pt07r31>LaFehr, T. R., 1983, Rock density from [[borehole gravity]] surveys: Geophysics, v. 48, p. 341, DOI: [http://
  6 KB (854 words) - 16:19, 20 January 2022

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