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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Ns7yfyQAiEBfcSh2kyTOqplfrVli+s4C+dLGq/7kPbSNyb+YL9+qX0ofBh6EF2ax
 Fcs7l1jI+aHT8ApyKmMQ9g==

<SEC-DOCUMENT>0001010549-07-000007.txt : 20070103
<SEC-HEADER>0001010549-07-000007.hdr.sgml : 20070101
<ACCEPTANCE-DATETIME>20070103170745
ACCESSION NUMBER:		0001010549-07-000007
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061219
FILED AS OF DATE:		20070103
DATE AS OF CHANGE:		20070103

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHISHOLM JOHN
		CENTRAL INDEX KEY:			0001173236

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31398
		FILM NUMBER:		07505604

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		2814963442

	MAIL ADDRESS:	
		STREET 1:		PO BOX 441448
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77244

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATURAL GAS SERVICES GROUP INC
		CENTRAL INDEX KEY:			0001084991
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL, GAS FIELD SERVICES, NBC [1389]
		IRS NUMBER:				752811855

	BUSINESS ADDRESS:	
		STREET 1:		2911 SCR 1260
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79706
		BUSINESS PHONE:		9155633974

	MAIL ADDRESS:	
		STREET 1:		2911 SCR 1260
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79706
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>ngsg3chisholm121906_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-12-19</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001084991</issuerCik>
        <issuerName>NATURAL GAS SERVICES GROUP INC</issuerName>
        <issuerTradingSymbol>NGS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001173236</rptOwnerCik>
            <rptOwnerName>CHISHOLM JOHN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>539 GREEN ISLE BEACH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MONTGOMERY</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77356</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ John W Chisholm</signatureName>
        <signatureDate>2006-12-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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