75276330
Apr 17, 1997
Jul 20, 2004
chemical products for industrial purposes, namely, a plugging liquid containing inter alia hydrophobic liquid, an emulsifier, a cross-linking agent for polysaccharide, a weighing material and polysaccharide, for plugging of a zone of subterranean formation around a drill hole
Chemicalsrepair services in connection with maintenance of subterranean drill holes
Building Construction and Repair