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Correlations of Phase-boundary Pressures of Condensate Fluid Systems With Compositions Modified by Added Butane.

Authors
Baker-BA; Eilerts-CK
Source
NTIS: PB 224 768 :56 pages
Link
NIOSHTIC No.
10009010
Abstract
The Bureau of Mines used a windowed cell to measure the phase- boundary pressures of two related series of gas-condensate fluid mixtures. Normal butane was added to the mixtures incrementally to determine its effectiveness for lowering phase-boundary pressure. All the experimental data were correlated, so that the pressure required to maintain light oils mixed with natural gas in the single phase may be computed for secondary recovery applications. The heavy hydrocarbon parts of the mixtures were distillation fractions of a gulf coast condensate. Intermediate normal hydrocarbons in the butane-heptane range and natural gas were added to the fractions in selected proportions, so that phase-diagram pressures of 26 fluids were actually studied. The experimental range of temperatures was 50 deg to 280 deg f. Two correlations were developed to represent phase-boundary pressures by means of a polynomial. Independent variables represent natural gas content, disparity of properties of components comprising the mixtures, and temperature. A fourth variable, for one correlation only, was the quantity of normal butane added to the original mixtures. The latter correlation with four independent variables contains 15 coefficients and is estimated to be accurate to 135 psi.
Publication Date
19730101
Document Type
IH; Report of Investigation;
Fiscal Year
1973
NTIS Accession No.
PB-224768
NTIS Price
A05
Identifying No.
RI 7759
NIOSH Division
BERC;
Source Name
NTIS: PB 224 768
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