<SUBMISSION>
<ACCESSION-NUMBER>0001437749-11-004366
<TYPE>3
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20110614
<FILING-DATE>20110629
<DATE-OF-FILING-DATE-CHANGE>20110629
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>WEIDNER WILLIAM
<CIK>0001524505
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>3
<ACT>34
<FILE-NUMBER>000-51403
<FILM-NUMBER>11937565
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>660 LABAUVE DRIVE
<CITY>WESTWEGO
<STATE>LA
<ZIP>70094
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Blackwater Midstream Corp.
<CIK>0001292518
<ASSIGNED-SIC>4220
<IRS-NUMBER>262590455
<FISCAL-YEAR-END>0331
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>660 LABAUVE DRIVE
<CITY>WESTWEGO
<STATE>LA
<ZIP>70094
<PHONE>504-340-3000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>660 LABAUVE DRIVE
<CITY>WESTWEGO
<STATE>LA
<ZIP>70094
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>Laycor Ventures Corp.
<DATE-CHANGED>20040602
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rdgdoc.xml
<DESCRIPTION>WEIDNER - FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2011-06-14</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001292518</issuerCik>
        <issuerName>Blackwater Midstream Corp.</issuerName>
        <issuerTradingSymbol>BWMS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001524505</rptOwnerCik>
            <rptOwnerName>WEIDNER WILLIAM</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>660 LABAUVE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WESTWEGO</rptOwnerCity>
            <rptOwnerState>LA</rptOwnerState>
            <rptOwnerZipCode>70094</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Blackwater Midstream Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1428000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>Appointed to the Company's Board of Directors on June 14, 2011 to serve from June 14, 2011 until the Company's shareholders elect members to the Board at the Company's next annual meeting to be held in September 2011.</remarks>

    <ownerSignature>
        <signatureName>/s/ William Daniel Weidner, III</signatureName>
        <signatureDate>2011-06-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
