DENSITY OF WATER GCM3 VERIFICATION
DENSITY OF WATER GCM3 SOFTWARE

Reservoir-Fluid Property Correlations-State of the Art (includes associated papers 2354 ). The Properties of Petroleum Fluids, second edition. Paper presented at the 1948 SPE Annual Meeting, Dallas, 4–6 October. The Solubility of Natural Gas in Oil-Field Brines. New York: Elsevier Scientific Publishing Co. for Testing and Materials, Part 31-Water, Section VII, Philadelphia. Annual Book of ASTM Standards, American Soc. ↑ Saline and Brackish Waters, Sea Waters and Brines.1 by the brine FVF at the reservoir temperature and pressure of interest. Then, density at reservoir conditions is calculated by dividing the density in Eq. Where density is in lbm/ft 3, and S is salinity in weight percent. The metric units can be changed to customary units (lbm/ft 3) by multiplying by 62.37.Īnother approach to calculating water density is to first calculate the density of formation water at standard conditions with McCain’s correlation. They can be added directly because the metric units are referred to the common density base of water (1 g/cm 3). The density of formation water (g/cm 3) at reservoir conditions is the sum of the values read from Figs.These curves were computed from data given by Ashby and Hawkins. For oil reservoirs below the bubblepoint, the 'saturated-with-gas' curves should be used for water considered to have no solution gas, the 'no-gas-in-solution' curves should be used.

3 to find the increase in specific gravity (density) when compressed to reservoir pressure.

Knowing the density at atmospheric pressure and reservoir temperature, use Fig.

Assuming the equivalent weight percent NaCl remains constant, extrapolate the weight percent to reservoir temperature and read the new density.

With the temperature and density at atmospheric pressure, obtain the equivalent weight percent NaCl from Fig.

The density of formation water at reservoir conditions can be calculated in four steps. The salt content can be estimated from the formation resistivity, as measured from electric-log measurements. The only field datum necessary is the density at standard conditions, which can be obtained from the salt content by use of Fig. When laboratory data or actual water samples are unavailable, the density of formation water at reservoir conditions can be estimated roughly (usually to within +/−10%) from correlations ( Figs.

DENSITY OF WATER GCM3 VERIFICATION

Experimental verification of the computer predictions should be performed in cases in which any error could have significant impact. Alternatively, some modern multicomponent chemical equilibrium simulators accurately calculate the densities (and other physical properties) from the complete analysis of the waters within the temperature and pressure range of the thermodynamic database. Thus, water samples taken for providing input to these programs must have accurate densities determined experimentally.

DENSITY OF WATER GCM3 SOFTWARE

However, process simulation software used in modern facility design uses the true density or specific gravity of the water to avoid significant cumulative errors, especially when working with low-gravity heavy oils or concentrated brines. In the past, density in metric units (g/cm 3) was considered equal to specific gravity therefore, for most engineering calculations, density and specific gravity were interchangeable in most of the older designs.

Density of water gcm3