UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13G

                   Under the Securities Exchange Act of 1934


                         (Amendment No.____________)(1)


                        Natural Gas Services Group, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                           Common Stock and Warrants
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                  63886Q-10-9
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


                                 Annual Filing
- --------------------------------------------------------------------------------
            (Date of Event Which Requires Filing of this Statement)


Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

          [_]  Rule 13d-1(b)

          [_]  Rule 13d-1(c)

          [X]  Rule 13d-1(d)


- ----------
* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 or  otherwise  subject to the  liabilities  of that  section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).





CUSIP No.63886Q-10-9                  13G                      Page 2 of 5 Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)


Richard L. Yadon
________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

(a)

(b) [X]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION


U.S.A.
________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           303,548
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          0
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         303,548
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            0
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


303,548
________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
     (See Instructions)

     [_]
________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9


6.2%
________________________________________________________________________________
12.  TYPE OF REPORTING PERSON (See Instructions)


IN
________________________________________________________________________________




CUSIP No. 63886Q-10-9                 13G                      Page 3 of 5 Pages



Item 1(a).  Name of Issuer:


            Natural Gas Services Group, Inc.
            ____________________________________________________________________

Item 1(b).  Address of Issuer's Principal Executive Offices:


            2911 SCR 1260, Midland, Texas  79706
            ____________________________________________________________________

Item 2(a).  Name of Person Filing:


            Richard L. Yadon
            ____________________________________________________________________

Item 2(b).  Address of Principal Business Office, or if None, Residence:


            P.O. Box 8715, Midland, Texas  79708
            ____________________________________________________________________

Item 2(c).  Citizenship:


            U.S.A.
            ____________________________________________________________________

Item 2(d).  Title of Class of Securities:


            Common Stock and Warrants
            ____________________________________________________________________

Item 2(e).  CUSIP Number:


            63886Q-10-9
            ____________________________________________________________________

Item 3.     If This Statement  is Filed  Pursuant to  Rule 13d-1(b), or 13d-2(b)
            or (c), Check Whether the Person Filing is a:

     (a)  [_]  Broker or dealer registered under Section 15 of the Exchange Act.

     (b)  [_]  Bank as defined in Section 3(a)(6) of the Exchange Act.

     (c)  [_]  Insurance  company as defined in Section 3(a)(19) of the Exchange
               Act.

     (d)  [_]  Investment  company  registered under Section 8 of the Investment
               Company Act.

     (e)  [_]  An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

     (f)  [_]  An employee  benefit plan or endowment  fund in  accordance  with
               Rule 13d-1(b)(1)(ii)(F);

     (g)  [_]  A parent  holding  company or control  person in accordance  with
               Rule 13d-1(b)(1)(ii)(G);

     (h)  [_]  A savings  association  as defined in Section 3(b) of the Federal
               Deposit Insurance Act;

     (i)  [_]  A  church  plan  that  is  excluded  from  the  definition  of an
               investment  company  under  Section  3(c)(14)  of the  Investment
               Company Act;

     (j)  [_]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).





CUSIP No. 63886Q-10-9                 13G                      Page 4 of 5 Pages


Item 4.  Ownership.

     Provide  the  following  information  regarding  the  aggregate  number and
percentage of the class of securities of the issuer identified in Item 1.

     (a)  Amount beneficially owned:

          303,548
          ______________________________________________________________________

     (b)  Percent of class:

          6.2%
          ______________________________________________________________________

     (c)  Number of shares as to which such person has:

          (i)   Sole power to vote or to direct the vote   XX
                                                        _______________________,

          (ii)  Shared power to vote or to direct the vote
                                                          _____________________,

          (iii) Sole power to dispose or to direct the disposition of
                                                                     __________,

          (iv)  Shared power to dispose or to direct the disposition of
                                                                       ________


Item 5.  Ownership of Five Percent or Less of a Class.

     If this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more than
five percent of the class of securities check the following [ ].


         _______________________________________________________________________

Item 6.  Ownership of More Than Five Percent on Behalf of Another Person.



         _______________________________________________________________________

Item 7.  Identification and  Classification of the Subsidiary Which Acquired the
         Security  Being  Reported on by the Parent  Holding  Company


         _______________________________________________________________________

Item 8.  Identification and Classification of Members of the Group.



         _______________________________________________________________________

Item 9.  Notice of Dissolution of Group.



          ______________________________________________________________________

Item 10.  Certifications.

     (a)  The  following  certification  shall be included if the  statement  is
          filed pursuant to Rule 13d-1(b):

          "By signing  below I certify  that,  to the best of my  knowledge  and
          belief, the securities referred to above were acquired and are held in
          the ordinary course of business and were not acquired and not held for
          the  purpose  of or with the effect of  changing  or  influencing  the
          control of the issuer of the  securities and were not acquired and are
          not held in  connection  with or as a participant  in any  transaction
          having such purpose or effect."



     (b)  The  following  certification  shall be included if the  statement  is
          filed pursuant to Rule 13d-1(c):

          "By signing  below I certify  that,  to the best of my  knowledge  and
          belief, the securities referred to above were not acquired and are not
          held for the purpose of or with the effect of changing or  influencing
          the control of the issuer of the  securities and were not acquired and
          are not held in connection with or as a participant in any transaction
          having such purpose or effect."




                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.


                                                   February 13, 2003
                                        ----------------------------------------
                                                        (Date)


                                                 /s/ Richard L. Yadon
                                        ----------------------------------------
                                                      (Signature)


                                                    Richard L. Yadon
                                        ----------------------------------------
                                                      (Name/Title)



Note.  Schedules  filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
for whom copies are to be sent.

Attention.  Intentional  misstatements  or omissions of fact constitute  federal
criminal violations (see 18 U.S.C. 1001).