Use of selected Sterols in sludge for the Sweep of perforations for the Exploitation of Offshore Oil and Natural Gas

摘要

The present invention relates to the use of selected fused and pumped esters in the temperature range of 5 ° C, consisting of monofunctional alcohols with 2 to 12, especially 4 to 12 carbon atoms and saturated, aliphatic monocarboxylic acids with 12 to 16 atoms of carbon or mixtures thereof with a maximum of approximately equal amounts or of other monocarboxylic acids in the oil phase or at least as a substantial proportion of the oil phase of sludge for the sweeping of transposition perforations, which are suitable for an out-of-sew, respectful exploitation For the enviroment,1. Natural agas containing oil or oil phase of dispersed water phase, together with latex, charge, fluid loss additives, and other additives as appropriate.