BIODEGRADABLE LUBRICATING COMPOSITION AND USE THEREOF IN A DRILLING FLUID, IN PARTICULAR FOR VERY DEEP RESERVOIRS

摘要

The present invention relates to a biodegradable lubricating composition, intended in particular for being included as an oily phase having high lubricating power in a drilling fluid or mud. Said composition can be used in a drilling fluid or as a fracturing fluid for underground formations. Said muds or fluids containing the composition of the present invention are especially suitable for very deep drilling, offshore deep-water drilling and/or directional drilling or extended-reach drilling.