Houston, TX

Arlington, TX

Oil States Industries, Inc.

Tree Savers International (USA) Inc.

A-Z Terminal Corporation

Stinger Wellhead Protection, Incorporated

Sooner Pipe Gp, L.L.C.

Schooner Petroleum Services, Inc.

Well Testing, Inc.

Specialty Rental Tools & Supply, L.L.C.

Sooner Pipe, L.L.C.

Oil States Industries (Malaysia), Inc.

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Houston, TX

Reedhycalog Utah, LLC

Diamond Products International, Inc.

Nov Downhole Thailand, LLC

Nov Downhole De Colombia, LLC

Pridecomex Ta Industries, LLC

Houston, TX

Gulfmark Offshore, Inc.

Gm Offshore, Inc.

Gulfmark Americas, Inc.