The Acoustic Determination of the Thermophysical Properties of a North Sea Gas Condensate from 298.65 K to 373.45 K and Up to 70 MPa

Abstract

The thermophysical properties for a gas condensate mixture taken from a British North Sea reservoir were determined via an initial value method using acoustic information. A distinct functional form was considered for the sound velocity in terms of pressure along each isotherm. Detailed results are presented on the computed thermophysical properties, including expansivity, isothermal compressibility, isobaric heat capacity, and the Joule-Thomson coefficient for temperatures between 298.65 and 373.45 K and pressures between 40 and 70 MPa. The acoustically determined condensate gas densities were compared with the experimental densities of Gozalpour et al. (2001) for a North Sea condensate gas sample for pressures up to 138 MPa.

Keywords:

• initial value method
• sound velocity
• thermophysical properties