Release Details

MIDLAND, Texas, Oct 26, 2004 /PRNewswire-FirstCall via Comtex/ -- Natural Gas Services Group, Inc. (Amex: NGS), a leading provider of equipment and services to the natural gas and oil industry, announces it plans to release its 2004 third quarter and nine months financial results on Monday, November 1, 2004. In conjunction with the release, the Company has scheduled a conference call Monday, November 1, 2004 at 3:00 PM Central Standard Time.

     What:   Natural Gas Services 2004 Third Quarter & Nine Months Financial
             Results Conference Call

     When:   Monday, November 1, 2004 -- 3:00 PM Central Standard Time

     How:    Live via phone by dialing 800-936-4602.  Code: Natural Gas
             Services.  Participants to the conference call should call in at
             least 5 minutes prior to the start time.

Wallace Sparkman, President & CEO, Natural Gas Services Group, Inc. will be leading the call and discussing third quarter and nine months financial results, the status of existing and new natural gas compressor leases, the acquisition of Screw Compression Systems, Inc. and a look at the balance of fiscal 2004.

About Natural Gas Services Group, Inc.

NGS manufactures, fabricates, sells, leases and services natural gas compressors that enhance the production of oil and gas wells. The Company also manufactures and sells flare systems and flare ignition systems for plant and production facilities.

    For more information visit the Company's website at http://www.ngsgi.com .

Please contact Jim Drewitz, Creative Options Communications, 972-355-6070 with any questions regarding the conference call.

Certain statements contained herein are "forward looking" statements as such term is defined in the Private Securities Litigation Reform Act of 1995. Because statements include risks and uncertainties, actual results may differ materially from those expressed or implied and include, but are not limited to, those discussed in filings by the Company with the Securities and Exchange Commission.

     For More Information, Contact:
     Wallace Sparkman, President & CEO
     800-580-1828

     Jim Drewitz, Investor Relations
     972-355-6070

SOURCE Natural Gas Services Group, Inc.

Wallace Sparkman, President & CEO of Natural Gas Services
Group, Inc., +1-800-580-1828, or Jim Drewitz, Investor Relations,
+1-972-355-6070, for Natural Gas Services Group, Inc.

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