Study on Drilling Fluid for Hydrate in Plateau Permafrost

Abstract:

Analysis was made on present situation of application technique of drilling fluid for coring in frozen soil and ice sheet in foreign countries, and suggestions were made on study of drilling fluid for hydrate in plateau permafrost and field application, such as selection of resistance ability of washing fluid to low temperature, antifreeze agent and anti-low-temperature treatment agent; inhibit and fluid loss reduce of drilling mud.