-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001181431-06-047396.txt : 20060814
<SEC-HEADER>0001181431-06-047396.hdr.sgml : 20060814
<ACCEPTANCE-DATETIME>20060814163355
ACCESSION NUMBER:		0001181431-06-047396
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060811
FILED AS OF DATE:		20060814
DATE AS OF CHANGE:		20060814

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OYO GEOSPACE CORP
		CENTRAL INDEX KEY:			0001001115
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				760447780
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		7007 PINEMONT DR.
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
		BUSINESS PHONE:		7139864444

	MAIL ADDRESS:	
		STREET 1:		7007 PINEMONT DR.
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			STILL CHARLES H
		CENTRAL INDEX KEY:			0001049656

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-36727
		FILM NUMBER:		061031016

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		7139399700

	MAIL ADDRESS:	
		STREET 1:		FULBRIGHT & JAWORSKI LLP
		STREET 2:		1301 MCKINNEY, SUITE 5100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77010-3095
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd127373.xml
<DESCRIPTION>STILL EXERCISE OF OPTIONS
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-08-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001001115</issuerCik>
        <issuerName>OYO GEOSPACE CORP</issuerName>
        <issuerTradingSymbol>OYOG</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>STILL CHARLES H</rptOwnerName>
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            <rptOwnerStreet1>1301 MCKINNEY, SUITE 5100</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77010</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Stock, par value $.01 per share</value>
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            <transactionDate>
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            <transactionAmounts>
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                </transactionShares>
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                <directOrIndirectOwnership>
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        <nonDerivativeTransaction>
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            <transactionAmounts>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $.01 per share</value>
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            <transactionDate>
                <value>2006-08-14</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>2027</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.94</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
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        <nonDerivativeTransaction>
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                <value>2006-08-14</value>
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            <transactionAmounts>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5460</value>
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                    <value>D</value>
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        <nonDerivativeTransaction>
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                <value>Common Stock, par value $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2006-08-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
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                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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            <transactionAmounts>
                <transactionShares>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1164</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Options (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>17.69</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-08-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
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                <footnoteId id="F2"/>
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            <transactionAmounts>
                <transactionShares>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2005-01-12</value>
            </exerciseDate>
            <expirationDate>
                <value>2014-01-12</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
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                    <footnoteId id="F4"/>
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        <derivativeTransaction>
            <securityTitle>
                <value>Options (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-08-11</value>
            </transactionDate>
            <transactionCoding>
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                <footnoteId id="F2"/>
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                <transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>2003-02-28</value>
            </exerciseDate>
            <expirationDate>
                <value>2012-02-28</value>
            </expirationDate>
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                <directOrIndirectOwnership>
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            <securityTitle>
                <value>Options (right to buy)</value>
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            <conversionOrExercisePrice>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
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                    <value>D</value>
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                <value>2004-03-03</value>
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                    <value>D</value>
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        <derivativeTransaction>
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            <conversionOrExercisePrice>
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                <value>2006-08-14</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
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            <transactionAmounts>
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                    <value>2027</value>
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                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F3"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2004-03-03</value>
            </exerciseDate>
            <expirationDate>
                <value>2013-03-03</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2027</value>
                    <footnoteId id="F6"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12600</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Options (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.81</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-08-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>2269</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2000-03-02</value>
            </exerciseDate>
            <expirationDate>
                <value>2009-03-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2269</value>
                    <footnoteId id="F7"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10331</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These shares were issued upon the exercise of options (described in Table II) and then immediately sold.</footnote>
        <footnote id="F2">The shares that were issued upon the exercise of options were immediately sold, as is presented in Table I.</footnote>
        <footnote id="F3">Pursuant to General Instruction C(iii) of Form 4, the exercise price is reported in Cell 2 of this Table II.</footnote>
        <footnote id="F4">Includes options to purchase common stock, par value $.01 per share, of OYO Geospace Corporation having varying exercise dates, expiration dates and exercise prices.</footnote>
        <footnote id="F5">This number represents the partial exercise of the option issued to Mr. Still in January 2004 to purchase shares of common stock, par value $.01 per share, of OYO Geospace Corporation.</footnote>
        <footnote id="F6">This number represents the partial exercise of the option issued to Mr. Still in March 2003 to purchase shares of common stock, par value $.01 per share, of OYO Geospace Corporation.</footnote>
        <footnote id="F7">This number represents the partial exercise of the option issued to Mr. Still in March 1999 to purchase shares of common stock, par value $.01 per share, of OYO Geospace Corporation.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Charles H. Still</signatureName>
        <signatureDate>2006-08-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
