METHOD FOR INJECTING ACID COMPOUNDS INTO AN UNDERGROUND RESERVOIR

摘要

The invention relates to a method for injecting a fluid containing acid compounds into an underground reservoir R that can be accessed by a well consisting of parts A, B and C. The fluid is injected in a liquid form at the top of the well T and received in the reservoir R. Said method comprises the following steps: a) a reservoir R is selected at a given depth and the injection pressure of the fluid at the top of the well T is determined in such a way that the fluid enters the reservoir at a higher pressure than the cricondenbar thereof, and b) the thermal insulation conditions of the well and the temperature of injection of the fluid at the top of the well T are determined in such a way that the temperature of the fluid on the wall of the well remains lower than the bubble temperature of the fluid, as long as the pressure of the fluid is lower than the circondenbar of the fluid.