Dril—Quip, Inc.
Drummond Steven J.
Du Michael Hui
Dual Gradient Systems, L.L.C.
Duell Alan B.
Duff Richard
Duguid David
Duke Wesley G.
Dunbar Mark Edward
Duncan George C.
Dunlap Kenneth S.
Dynamic Oil Tools Inc.
East, Jr. Loyd
Eastern Oil Tools PTE LTD
Eckhart Mickey W.
Edwards Dona C
Eggleston Joe E.
Ehlinger Jeffrey C.
Elizabeth R. Hall & Associates, P.C.
Emerson Alan Brent