LECHADAS Y COMPOSICIONES ALMACENABLES PARA CEMENTAR POZOS DE PETROLEO Y GAS

Composiciones almacenables para cementación de pozos de petróleo y gas que contienen escoria de alto horno como material hidráulico, activadores, aditivos y una fase acuosa continua que forma una lechada de cementación, en donde la cantidad de activadores en dichas composiciones con base en la cantidad de escoria es insuficiente para efectuar el fraguado de la composición durante por lo menos 72 horas. Storable compositions and slurries for cementing oil and gas wells are described which comprise blast-furnace slag besides other additives which are usual in the cementing technique. The compositions and slurries are insufficiently activated (or are activated immediately before introducing them into the well), so that they can be stored for at least 72 hours (alternatively they may be stored indefinitely) without the setting of the composition and dispense with the addition of activation inhibitors. The use of the compositions and slurries in the cementing of oil and gas wells is also described.