Correlations for physical properties of petroleum reservoir brines

Technical Report · Mon Oct 31 23:00:00 EST 1977

DOI:https://doi.org/10.2172/6733264· OSTI ID:6733264

Numbere, D.; Brigham, W. E.; Standing, M. B.

This study involves the correlation of data for the physical properties of petroleum reservoir brines. The objective was to develop the correlations up to a maximum temperature of 400/sup 0/F, a maximum pressure of 10,000 psia, and for salt concentrations up to 25 weight percent. In searching the literature, we found no investigators who made measurements covering all these ranges. However, by comparing data where the experimental ranges overlapped it was possible to correlate the data over nearly the entire range desired. For brine density, compressibility, and formation volume factor, the equation by Rowe and Chou was found to be quite accurate; however, it is also quite cumbersome, so simpler polynomials were devised to fit the data. The maximum errors in these new equations are 0.5% on density, approx. 8 to 10% on compressibility, and 0.2% on formation volume, factor. Most errors were considerably less than these values. The error found on the compressbility equation appears rather high, but this is primarily due to the inherent error in measuring compressibility; its value is proportional to the slope of the density-pressure curve. The viscosity correlation was also a simple power function fit of the data. The maximum error was 0.4% up to a salt concentration of 17%. The error was found to be less than 1% on those few data available at higher salt concentrations.

• Research Organization: Stanford Univ., CA (USA). Petroleum Research Inst.
• DOE Contract Number: AC03-76ET12056
• OSTI ID: 6733264
• Report Number(s): DOE/ET/12056-T8
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
BRINES
COMPRESSIBILITY
DATA
DENSITY
EXPERIMENTAL DATA
GEOLOGIC DEPOSITS
HIGH PRESSURE
HIGH TEMPERATURE
INFORMATION
MECHANICAL PROPERTIES
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MINERAL RESOURCES
NUMERICAL DATA
PETROLEUM DEPOSITS
PHYSICAL PROPERTIES
RESOURCES
VISCOSITY
VOLUME