Compressibility factor for gas condensates

摘要

Compressibility factor of natural gases is necessary i many petroleum engineering calculations. Some of these calculations are: evaluation of newly discovered formation, pressure drop from flow of gas through pipe, pressure gradient in gas wells, gas metering, gas compression, and processing. Typically, the gas compressibility factor is measured by laboratory experiments. These experiments are expensive and time consuming. Occasinally, experimental data became unavailable and the gas compressibility factor is estimated from correlations using gas composition or gas gravity.