Dove Johnny Mack

Dowasue Industries Ltd.

Dowden Sanford R.

Dowel

Dowell James David

Dowell Schlumberger

Dowell Schlumberger Incorporated

Dowell, a division of Schlumber Technology Corporation

Dowell, a division of Schlumberger Technology Corp.

Dowker Clark A.

Dowling Michael A.

Down Hole Injection, Inc

Down Hole Injection, Inc.

Downham Harold

Downhole Plugback Systems, Inc.

Downhole Products (UK) Limited

Downhole Products PLC

Downhole Research, LLC

Downhole Services, Inc.

Downhole Solutions, Inc.