Experimental Study on Ethylene Alcohol-based Drilling Fluid System under Low-temperature Condition

Abstract:

It has great significance for the exploration work in low-temperature formation whether drilling fluid can maintain the normal performance below freezing point. Choosing ethylene alcohol as anti-freezing agent can meet the requests of drilling work. Study was made on low temperature resistance, liquidity, water loss character and preventing collapse capability of the drilling fluid, the amount of ethylene alcohol and other polymers are determined to meet the requests of exploration in low temperature formation.