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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 I1Wbf7M3m/EA/yrGEDvSLr97BFbTe4DvAv7VOxEA68p1ILG1FIJ60aUFVgsMDDIA
 9hc1XxpOq4dS5UEGV0Gcbw==

<SEC-DOCUMENT>0001054903-06-000001.txt : 20060117
<SEC-HEADER>0001054903-06-000001.hdr.sgml : 20060116
<ACCEPTANCE-DATETIME>20060117204951
ACCESSION NUMBER:		0001054903-06-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060113
FILED AS OF DATE:		20060117
DATE AS OF CHANGE:		20060117

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SMITH GARY D
		CENTRAL INDEX KEY:			0001054903

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13439
		FILM NUMBER:		06534265

	BUSINESS ADDRESS:	
		STREET 1:		13550 HEMPSTEAD HIGHWAY
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
		BUSINESS PHONE:		7139397711

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DRIL-QUIP INC
		CENTRAL INDEX KEY:			0001042893
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL & GAS FILED MACHINERY & EQUIPMENT [3533]
		IRS NUMBER:				742162088
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		13550 HEMPSTEAD HIGHWAY
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
		BUSINESS PHONE:		7139397711

	MAIL ADDRESS:	
		STREET 1:		180 EAST FIFTH STREET
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Four Smiths CO LTD
		CENTRAL INDEX KEY:			0001346334
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13439
		FILM NUMBER:		06534264

	BUSINESS ADDRESS:	
		STREET 1:		13550 HEMPSTEAD HIGHWAY
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
		BUSINESS PHONE:		713-939-7711

	MAIL ADDRESS:	
		STREET 1:		13550 HEMPSTEAD HIGHWAY
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-01-13</periodOfReport>

    <issuer>
        <issuerCik>0001042893</issuerCik>
        <issuerName>DRIL-QUIP INC</issuerName>
        <issuerTradingSymbol>DRQ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001054903</rptOwnerCik>
            <rptOwnerName>SMITH GARY D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>13550 HEMPSTEAD HIGHWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77040</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Co-Chairman of the Board</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001346334</rptOwnerCik>
            <rptOwnerName>Four Smiths CO LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>13550 HEMPSTEAD HIGHWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77040</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-01-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>141025</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>49.92</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2807020</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>555</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The shares of Common Stock sold were owned and sold directly by Four Smiths' Company, Ltd., and indirectly by Gary D. Smith as co-managing general partner of Four Smiths' Company, Ltd.  The remaining shares of Common Stock are owned by Four Smiths' Company, Ltd.  Mr. Smith disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Gary D. Smith</signatureName>
        <signatureDate>2006-01-17</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Gary D. Smith, Co-Managing General Partner, Four Smiths' Company, Ltd.</signatureName>
        <signatureDate>2006-01-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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