Overview

This appendix presents concepts and applications of fluid and rock properties usually required for solving reservoir engineering and transient well test analysis problems. The engineering equations and correlations presented in this appendix represent technical papers well known to the petroleum engineers. For most of these properties, laboratory analysis provides the most accurate answer; however, in many cases, laboratory results are not available, and the test analyst must use the following two approaches, which are adopted for computing or finding the various properties:

1. Equation approach and

2. Figure, chart, or table approach

When laboratory results are not available, the test analyst must use empirical correlations of experimental data. This appendix provides a summary of correlations that have proved useful for test analysis. The appendix is divided into the following sections:

• Gas properties and correlations

• Reservoir rock properties

• Reservoir PVT water properties

For the properties where the equations require simple mathematical manipulations, both the equations and the charts are presented. You may use either the equations or the charts and tables. Each property computation and its use are illustrated by a solved example.

F.1 Gas Properties and Correlations