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• Well log analysis for reservoir characterization
  | Density (RHOB) || Lithology interpretation, finding hydrocarbon bearing zone, poros ...veral logs, there are gamma ray, spontaneous potential, resistivity, and [[density log]]. Basically, a formation with high gamma ray reading indicates that it
  25 KB (3,679 words) - 21:17, 13 March 2019
• Perforation design
  ...al angle for shots (phasing). Thus, allowing for more shots per foot (shot density). As for the hollow guns, it leave no debris within the tubing. * Port plug guns: This kind is used for deep penetration with a density of four shots per foot
  12 KB (1,786 words) - 21:02, 21 April 2022
• Fracture threshold in the real world
  ...) of water column. The water column substitutes low-density water for high-density rock. The result is a shift of P_f to lower values. If the water Similarly, facies changes within a basin can alter the density distribution in the sediment column and seal risk. A facies change from den
  6 KB (930 words) - 15:49, 30 March 2022
• Offshore exploration and exploitation
  Registers the variation of rock density, taking as reference the Earth gravitational field ([[:File:Figura 1.jpeg|F ...in each interest area, which results in a seismic data volume, with bigger density than r2-D seismic, and provides better ubication of the structures. This me
  5 KB (708 words) - 22:00, 10 April 2019
• Archie equation
  ...matrix || Use density– neutron crossplot (See [[Determining porosity from density-neutron logs]].)
  5 KB (703 words) - 13:52, 5 April 2022
• Gravity basics
  ...it is not as good as [[magnetics]] in determining depth to source because density distributions tend to be diffuse in the subsurface.
  5 KB (720 words) - 17:59, 24 January 2022
• Petroleum source rock formation
  ...n-restricted sediments at depths below wave base, in stagnant waters where density or temperature-stratified water columns form, and in other areas where oxyg
  2 KB (296 words) - 17:35, 13 April 2022
• Sorrento field: water saturation
  ...sity|Density logs]] were the primary source of [[porosity]] values. Matrix density appears to be about 2.68 g/cc, based on core-measured grain densities (cons
  7 KB (1,044 words) - 16:57, 13 April 2022
• Amplitude variations with offset (AVO)
  ...ced by the parameters of the speed and density of the coating, so that the density of the layer can be analyzed by analyzing the reflection coefficient. AVO m ...cient reflections will be the difference of acoustic impedance (product of density and P velocity) over the sum.
  9 KB (1,404 words) - 21:39, 27 March 2019
• FWhitehurst sandbox
  * bulk density http://physics.about.com/od/fluidmechanics/f/density.htm * density (but not density log) http://physics.about.com/od/fluidmechanics/f/density.htm
  22 KB (3,024 words) - 21:42, 19 December 2014
• Quick-look lithology from logs
  * Formation density ==Formation density logs (Alone)==
  25 KB (3,637 words) - 19:39, 18 January 2022
• Seal capacity of different rock types
  ...0.85 g/cm³, an interfacial tension of 21 dynes/cm, and a brine density of 1.05 g/cm³. Data were compiled from Smith<ref name=ch10r76>Sm
  5 KB (760 words) - 20:55, 31 March 2022
• Open hole tools
  * '''Fluid properties''', which include density, gas to oil ratio, [[API gravity]], water resistivity and salinity, tempera | rowspan = 4 | [[Porosity]] and Lithology || Density
  23 KB (3,350 words) - 17:26, 18 January 2022
• Hydrocarbon reservoirs associated to layered intrusive bodies
  ...where their density is equated with the host rocks. It may happen that the density remains below the rocks of the environment and that the magma is detained i
  10 KB (1,475 words) - 16:29, 4 April 2019
• Intact membrane seal leakage
  .... 59, p. 939–956.</ref> in conjunction with estimates of in situ petroleum density.
  3 KB (475 words) - 17:08, 1 February 2022
• Contourites
  ...vertical. If it presents low density it will remain surface, while a high density will sink. In turn, this property is dependent on temperature and salinity. * '''Salinity''': High concentrations cause an increase in the density of water; while its low concentration, decrease it.
  13 KB (1,889 words) - 19:11, 6 April 2016
• Log analysis: lithology
  The M-N crossplot uses the density, [[Basic open hole tools#Compensated neutron|compensated neutron]], and com ...t zero porosity. RHOMAA results from a mathematical projection of the bulk density of an interval to its value at zero porosity. These projections to zero por
  25 KB (3,189 words) - 17:24, 18 January 2022
• Pressure detection
  ...of pressure above normal follows the aquathermal gradient (constant water density) and then follows the fracture gradient.<ref name=pt03r8>Barker, C., and B. ...of abnormally high [[porosity]]) than normal shales at a given depth. The density of shale cuttings can be measured by several methods. Also, the shape of dr
  16 KB (2,450 words) - 21:42, 20 January 2022
• Normal hydrostatic pressure
  * Rate of pressure change depends only on water density.
  3 KB (480 words) - 13:47, 16 February 2022
• Pressure prediction: analysis of mud weights
  * [[Formation water density|Formation water]] and gas cutting of the mud
  4 KB (572 words) - 17:56, 17 February 2022
• Amplitude (seismic)
  : <math>\text{IA} = \text{Density} \times \text{Velocity}</math> Factors that influences velocity of wave are porosity, density, temperature, [[grain size]], gas saturation, frequency, external pressure,
  8 KB (1,291 words) - 15:49, 18 January 2017
• Rock physics analysis for reservoir identification
  ...nostic) by utilizing a given Vp-Vs-Rho set (P-wave, S-wave velocities, and density). ...and Sand B (clayey sandstone as indicated by gamma ray log) have different density and wave velocities compared to the claystones, even Sand A and Sand B have
  15 KB (2,356 words) - 18:00, 26 April 2022
• Pinedale field
  ...g, have helped to release the gas trapped in the Lance Pool. Finally, high-density drilling, as dense as one well for five acres, has allowed for significantl M107FG4.jpg|{{figure number|4}}High-density pad drilling allows development of a large subsurface volume of the gas res
  16 KB (2,521 words) - 17:13, 29 January 2016
• Magnetics: petroleum exploration applications
  ...density contrast between adjacent blocks and because of interference from density differences within the sedimentary section. On seismic data, the basement r
  9 KB (1,274 words) - 17:59, 24 January 2022
• Elemental parameter data for oil–oil and oil–source rock correlations
  Other parameters included in this category are [[API gravity]] (or density), color, wax content, pour point, and [[viscosity]]. Most of these paramete
  4 KB (571 words) - 17:34, 15 February 2022
• Natural hydraulic fracturing of top seals
  ...nsity logs to calculate overburden stress. For example, a 1-cm cube with a density of 2.4 g/cm³ exerts an overburden stress of 2.4 g/cm²
  9 KB (1,274 words) - 15:44, 30 March 2022
• Capillary pressure
  * ''&rho;''_w = density of the wetting nonwetting fluid * ''&rho;''_nw = density of the nonwetting fluid
  23 KB (3,315 words) - 16:59, 19 January 2022
• Monte Carlo and stochastic simulation methods
  ...tions of these outcomes. Such behavior can be characterized by probability density functions (pdf) of the response variables, as depicted on the right of [[:I ...imulated values of any one attribute reasonably reproduces the probability density function of the corresponding random variable model.
  11 KB (1,623 words) - 19:24, 19 January 2022
• Fault seal analysis for reservoir development
  * ρ_w = pore density of water (kg /m3) * ρ_h = density of hydrocarbons (kg /m3)
  14 KB (2,146 words) - 19:35, 13 September 2022
• Forward modeling of seismic data
  ...osity]] is represented in the model by a lower interval velocity and lower density than the surrounding rock (see [[Porosity]]). ...20Snell's%20law Snell's law], and are partially reflected when velocity or density discontinuities are encountered. Traveltimes of reflected arrivals correspo
  10 KB (1,513 words) - 21:16, 19 January 2022
• Hydrodynamics
  * ρ = density of fluid (lb/ft³ or g/cm³)
  5 KB (658 words) - 22:04, 17 February 2022
• Petroleum reservoir fluid properties
  ...iquid measured at standard conditions (usually 14.7 psia and 60 °T) to the density of pure water at the same standard conditions. Denoted mathematically as γ ...of density of any gas at standard conditions (14.7 psia and 60 °F) to the density of air at standard conditions; based on the ideal gas law (''pV'' = ''nRT''
  19 KB (2,721 words) - 21:21, 19 January 2022
• Drilling problems
  ...ased_muds|water-based drilling fluids]]. The increase in [[viscosity]] and density of the drilling can may result in the following:
  5 KB (732 words) - 21:18, 19 January 2022
• Sequence stratigraphy analysis
  ...e-grained sediments (clays and marls) in low-energy environments where low-density organic sediments are deposited and can be preserved. Organic-rich rocks ar
  4 KB (612 words) - 17:39, 13 April 2022
• Seismic facies analysis
  * Velocity and density contrasts of individual interfaces
  6 KB (809 words) - 17:46, 4 February 2022
• Weyburn seal capacity
  * ρ_w = formation water density (g/cc) * ρ_h = hydrocarbon density (g/cc)
  10 KB (1,484 words) - 20:55, 4 December 2023
• Production logging
  ...These fluid identification instruments measure the pressure gradient, bulk density, or capacitance of the flowing mixture. The flowmeter and fluid identificat ...ement can be converted to percent annular fill of cement. The ''variable [[density log]]'' (VDL) at the far right of [[:file:production-logging_fig6.png|Figur
  12 KB (1,726 words) - 16:48, 20 January 2022
• Fluid contacts
  ...Estimates [[Free water level|free water surface]] from pressures and fluid density measurements || rowspan = 2 | Makes use of widely available pressure data where ''ρ''_''h'' = density of the hydrocarbon.
  19 KB (2,690 words) - 21:20, 19 January 2022
• Hydrocarbon expulsion, migration, and accumulation
  ...ates through an aquifer when it is “buoyed” upward due to AP caused by the density differential of the hydrocarbons and the formation water. The oil or gas mi
  6 KB (828 words) - 16:32, 4 April 2022
• Structural exploration: thrust belt example
  ...ry of the prospect and the location of zones of high strain (high fracture density?) within the structure. Published with permission of James Morse, Computati ...f the prospect and the location of zones of high strain (high [[fracture]] density?) within the structure. These insights can be useful in determining optimal
  14 KB (1,897 words) - 20:01, 3 February 2022
• Two-dimensional geophysical workstation interpretation: generic problems and solutions
  ...ee-dimensional data are generally more coherent because only a single high density data set is usually involved. Two-dimensional projects are rarely confined ...of data. Typically, processed data are written as 16-or 32-bit words. This density of information translates to large volumes of information and requires a gr
  20 KB (2,848 words) - 14:29, 20 January 2022
• Amplitude versus offset (AVO) analysis
  ...ility modeling requires the following: (1) a depth-[[velocity]] model, (2) density and velocity trend curves, (3) [[porosity]] ranges, (4) fluid content varia ...g point for the inversion process, the final [[compressional velocity]], [[density]], and [http://en.wikipedia.org/wiki/Poisson%27s_ratio Poisson's ratio] inf
  12 KB (1,723 words) - 18:41, 20 January 2022
• Contouring geological data with a computer
  ...for a particular mapping project are selected by carefully inspecting both density and distribution of control points from which the map will be made. ...include error in the resultant surface. This error is related to both the density and location of the measured control points used to construct the surface.
  25 KB (3,597 words) - 20:49, 19 January 2022
• Hydrocarbon migration
  ...ecular size, and [http://physics.about.com/od/fluidmechanics/f/density.htm density]. The main chemical constraint is [[Wikipedia:Solubility|solubility]] of mi
  6 KB (865 words) - 14:33, 6 April 2016
• Yowlumne field
  ...consistent with a lower-gradient oil-water contact. More likely, the large density contrast results in buoyant oils unlikely to support a contact tilted more
  13 KB (1,896 words) - 19:02, 11 March 2019
• 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>A
  22 KB (3,508 words) - 20:34, 3 March 2016
• Migration rate
  The rate of transport of hydrocarbons by buoyancy depends on the density contrast of the hydrocarbons with water and [[hydrocarbon column]] height.
  6 KB (877 words) - 19:33, 14 February 2022
• Geologic mapping (UGM)
  ...ols and colors. Details of geological map depend on the its scale, and the density and accuracy of observations in the field. The final result from all [[geol * Less time is spent in areas where the rocks are uniform and a lower density of observations will serve.
  29 KB (4,733 words) - 15:34, 15 January 2024
• Data: sources
  ..., vertical permeability, porosity, water saturation, oil saturation, grain density, and sometimes a brief description of the core plug lithology (Table 1). A | Grain density || The density of the constituent grains making up the sediment in the core plug.
  43 KB (6,686 words) - 13:44, 18 March 2019
• Reservoir quality
  ...en hole tools#Compensated neutron|neutron]] logs, (2) porosity logs—sonic, density, and neutron logs, and (3) fluid saturation logs—resistivity logs.<ref na
  18 KB (2,514 words) - 17:47, 21 January 2022

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