<SEC-DOCUMENT>0001084991-18-000039-index.html : 20180529
<SEC-HEADER>0001084991-18-000039.hdr.sgml : 20180529
<ACCEPTANCE-DATETIME>20180529140954
ACCESSION NUMBER:		0001084991-18-000039
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		3
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20171231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20180529
</ITEM>
</RULE>
FILED AS OF DATE:		20180529
DATE AS OF CHANGE:		20180529

FILER:

	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
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31398
		FILM NUMBER:		18863843

	BUSINESS ADDRESS:	
		STREET 1:		508 WEST WALL STREET
		STREET 2:		SUITE 550
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79701
		BUSINESS PHONE:		432-262-2700

	MAIL ADDRESS:	
		STREET 1:		508 WEST WALL STREET
		STREET 2:		SUITE 550
		CITY:			MIDLAND
		STATE:			TX
		ZIP:			79701
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>sd2018.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: sd2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>sd2018exhibit.htm
<DESCRIPTION>EXHIBIT 1.01
<TEXT>
Document 2 - file: sd2018exhibit.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>ngsglogo11615a01.jpg
<TEXT>
Document 3 - file: ngsglogo11615a01.jpg

</DOCUMENT>
</SEC-DOCUMENT>