<SEC-DOCUMENT>0001104659-18-007703.txt : 20180208
<SEC-HEADER>0001104659-18-007703.hdr.sgml : 20180208
<ACCEPTANCE-DATETIME>20180208192107
ACCESSION NUMBER:		0001104659-18-007703
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180119
FILED AS OF DATE:		20180208
DATE AS OF CHANGE:		20180208

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stuart David
		CENTRAL INDEX KEY:			0001721006

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38066
		FILM NUMBER:		18587148

	MAIL ADDRESS:	
		STREET 1:		1820 NORTH I-35
		STREET 2:		P.O. BOX 1715
		CITY:			GAINESVILLE
		STATE:			TX
		ZIP:			76241

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Select Energy Services, Inc.
		CENTRAL INDEX KEY:			0001693256
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL, GAS FIELD SERVICES, NBC [1389]
		IRS NUMBER:				814561945
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1400 POST OAK BLVD., SUITE 400
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056
		BUSINESS PHONE:		(940) 668-1818

	MAIL ADDRESS:	
		STREET 1:		1400 POST OAK BLVD., SUITE 400
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-01-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001693256</issuerCik>
        <issuerName>Select Energy Services, Inc.</issuerName>
        <issuerTradingSymbol>WTTR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001721006</rptOwnerCik>
            <rptOwnerName>Stuart David</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>515 POST OAK BLVD., STE. 200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77027</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior VP, Water Networks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-01-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11738</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27093</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares of restricted stock, granted under the Select Energy Services, Inc. 2016 Equity Incentive Plan, will vest 1/3 on January 19, 2019, 1/3 on January 19, 2020 and 1/3 on January 19, 2021.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ David Stuart by Adam Law, as Attorney-in-Fact</signatureName>
        <signatureDate>2018-02-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
