Inventor
BRADSHAW ROGER D
US7 patents
Patents
7 patentsUS5030366AJul 9, 1991
Spacer fluids
ATLANTIC RICHFIELD CO152 citations98
US5113943AMay 19, 1992
Spacer fluids
ATLANTIC RICHFIELD CO64 citations95
US5360787ANov 1, 1994
Dispersant compositions comprising sulfonated isobutylene maleic anhydride copolymer for subterranean well drilling and completion
ATLANTIC RICHFIELD CO24 citations92
US5292367AMar 8, 1994
Dispersant compositions for subterranean well drilling and completion
ATLANTIC RICHFIELD CO42 citations92
US5076852ADec 31, 1991
Cementing oil and gas wells
ATLANTIC RICHFIELD CO33 citations92
US5117909AJun 2, 1992
Well conduit sealant and placement method
ATLANTIC RICHFIELD CO46 citations89
US5038863AAug 13, 1991
Cementing oil and gas wells
ATLANTIC RICHFIELD CO21 citations81