October 2010

Gas Processing Developments

New correlation for calculating natural gas Z-factor

Use these calculations for low absolute average error

Moghadam, A. A., Ghotbi, C., Sharif University of Technology

Understanding the gas compressibility factor is necessary to solve petroleum engineering problems—such as predicting reserve, gas-pressure gradients, gas compression, gas metering, etc. Typically, the gas compressibility factor is obtained by laboratory experiments. Occasionally when laboratory reports are not available, equations of state (EOS) or empirical correlations are used to estimate this important factor. The first step is to determine the pseudo-critical gas properties. This is done by understanding the gas composition and correlations from Lee-Kesler. When the gas composition is unknown, gas properties are determined using correlations based on specific gravity. After obtaini

Log in to view this article.

Not Yet A Subscriber? Here are Your Options.

1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Hydrocarbon Processing magazine.

2) SUBSCRIBE to Hydrocarbon Processing magazine in print or digital format and gain ACCESS to the current issue as well as to 3 articles from the HP archives per month. $409 for an annual subscription*.

3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain ACCESS to this article, the current issue, all past issues in the HP Archive, the HP Process Handbooks, HP Market Data, and more. $1,995 for an annual subscription.  For information about group rates or multi-year terms, contact email Peter Ramsay or call +44 20 3409 2240*.

*Access will be granted the next business day.

Related Articles

From the Archive



{{ error }}
{{ comment.comment.Name }} • {{ comment.timeAgo }}
{{ comment.comment.Text }}