Dosman James A.
Downhole Technologies Co., L.L.C.
Drath Edwin H.
Du Benjamin R.
Ducker Thomas
Duerr John W.
Duncan Greg S.
Dunn Michael R.
Durand Kevin
Durieux Francois P.
Duve Eric J
Dwivedi Vikansha S.
Dwyer Bernard B.
Canada
World
United States