Dailey Oil Tool, Inc.
Danielsson Per
Daulton Daniel J.
Davis Garland W.
de Boer Luc
De La Matyr, Jr. George T.
deBoer Luc
Delahoussaye Paul
Development Oil Tool Systems
Dickinson Robert W.
DiLullo Gino
Dinnes Callum J. B.
Ditrani Angela M
Dixon Jeanette
Dorleans Andre M.
Dove Norval Roland
Drill Cuttings Technology, L.L.C.
Dual Gradient Systems, LLC
Duhe Jason
Dye William M.