PC users can now download a gas well analysis program developed and used by Ryder Scott. They need Windows 95 or later 9x versions, Microsoft Excel 97 software and an Internet connection. The free, self-extracting download is accessible from the Ryder Scott web site and does not require a file-decompression utility to unzip.

With the flowing pressure analysis program, a user can evaluate the performance of producing gas or gas-injection wells. The program enables the user to calculate flowing bottomhole pressures (FBHP) for gas wells based on well-test data, produced fluid and gas properties and wellbore data, such as true vertical depth and tubing inside diameter. The application also automatically computes associated backpressure equation parameters and displays a traditional log-log backpressure curve at the user’s option.

For producing wells, absolute open flow (AOF) potential is also calculated. Static bottomhole pressure (SIBHP) can also be determined from shut-in tubing pressure (SITP). As an added feature, the procedures incorporate corrections for the effects of condensate and water production. The application integrates techniques derived from Cullender-Smith (1956) and Turner, Hubbard and Dukler (1969).

James Latham, the Ryder Scott engineer who developed the program, modified those algorithms to incorporate enhanced iterative procedures for today’s high-speed computers. "In total, this program eliminates many tedious, time-consuming tasks that confront the petroleum engineer," said Latham.

Those interested in finding out more about the program or in getting the password to enable the program once it is downloaded should contact Latham at 713-651-9191, ext. 212 or at his e-mail address, james_latham@ryderscott.com. The web site also has a posted form to fill out and submit for the password.

Latham or his designee will promptly e-mail back the password after receiving the form. Also, if a user has a non-English-language version of Excel 97, the specific language can be entered on the form and a Ryder Scott engineer will e-mail back compatible program files. Ryder Scott is collecting submitted e-mail addresses in a separate directory and will periodically send upgrades, enhancements and new program announcements to users.

Ryder Scott offered its first utility-software program last September. That material-balance application, which is also currently posted on the site, automatically calculates original gas in place (OGIP) and estimated ultimate recovery (EUR). Both programs automatically load menus and macros for ease of use and feature override functions so certain calculated results can be changed manually. The applications also feature easy-to-use interfaces and print black-and-white or color, presentation-quality, hard-copy output.

During the initial downloading, installation instructions are received in a separate Excel or Word 97 file that can be opened and printed. Installation is simple and involves loading files in the Excel start directory.

Also, the user will be able to print and read a downloaded document that serves as the user manual. Ryder Scott plans to continue offering freeware on a quarterly basis that can be downloaded from the web site at no cost. The March 1999 Reservoir Solutions will announce the third download.

Editor’s Note: Ryder Scott does not guarantee or warrant the accuracy or reliability of this software.

[About] [Calgary Office] [Client List] [Contact] [Downloads] [Financial Institutions]
[International Experience] [Newsletter] [Services] [What's New] [Home]

Copyright © 1998-1999, Ryder Scott Company.  All Rights Reserved.
1100 Louisiana, Suite 3800, Houston, Texas  77002-5218 USA
Office: 713-651-9191  Fax: 713-651-0849