| Company | GREY WOLF JUG 2008 LIMITED PARTNERSHIP |
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| Company | TIRED DOG CORP. |
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| Company | GREY WOLF 2012 LIMITED PARTNERSHIP |
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| Company | GREY WOLF JUG 2012 LIMITED PARTNERSHIP |
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| Company | SIMORRI ENERGY II LLC |
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| Company | GREY WOLF JUG 2014 LIMITED PARTNERSHIP |
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| Company | GREY WOLF 2014 LIMITED PARTNERSHIP |
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| Company | GREY WOLF 2015 LIMITED PARTNERSHIP |
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| Company | GREY WOLF 2016 LIMITED PARTNERSHIP |
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