Method for enhancing the thermal insulation of a production tubing or transfer tube and method for reducing the velocity of flow of convection in a ring.

摘要

Methods and compositions for thermal insulation.The present invention relates to the loss of heat is undesirable the production tubing or the transfer of heat out of control to the outer rings which is inhibited by the introduction in the rings of a flowingThe elevator or a packer fluid thermal insulation containing a surfactant zwitteriu00f4nico, an alcohol and a brine.The viscosity of the composition is sufficient to reduce the flow velocity of convection in the rings. The invention has particular applicability with brine of high density.