Patent ID: 7086482

Claim:
A process for recovering hydrocarbons in oil well deposits and for reducing contamination in cement clinker production, comprising: subjecting effluences in the form of combustion and/or calcining gases of cement clinker production to at least one of the steps of adsorption, separation of dusts, condensation, liquefaction, distillation and compression; mixing effluences from the combustion of fuel and effluences from calcining limestone to an extent that a percentage of N 2 and CO 2 of 75 to 85% and 15 to 25%, respectively, is obtained such that the sum of both percentages is 100%; adjusting the temperature, concentration, pressure and/or volume of the effluences in order to obtain treated inert gases compatible with hydrocarbons of the deposits; and injecting said treated gases into said oil well deposits.