Gregor Keilhofer

Cementing subterranean zones using cement compositions containing biodegradable dispersants

Solids composition based on clay minerals and use thereof

Water-soluble and biodegradable copolymers on a polyamide basis and use thereof

Method for the rheology control of fluid phases

GRAFT COPOLYMER, METHOD FOR THE PRODUCTION THEREOF, AND USE THEREOF

Method for breaking the viscosity of polymer-thickened aqueous systems for mineral oil and natural gas exploration

Method of using high-alumina cements for rheology control of liquid phases

Method of use of a polyvinyl alcohol-based composition

Reducing viscosity of polymer thickened aqueous phase with crude oil and/or natural gas, comprises forming highly liquid emulsion with water as continuous phase, where emulsion is formed by adding surface active component to system

Grafting copolymer, useful e.g. as additives in construction chemical applications, water retention agents and fluid loss additives, comprises silica, which is reacted with an unsaturated silane and a polymer containing sulfonic acid