Development and Application of Drilling Fluid Extreme-Pressure Lubricant JM-1

Common drilling fluid lubricants have problems such as low film strengths at extreme pressure, poor stability at elevated temperatures, and short lubricity persistence in extreme conditions. An extreme pressure lubricant, JM-1, has been developed by mixing an organic molybdenum friction reducer and the 10# white oil. The organic molybdenum friction reducer was made by reacting vegetable oils with organicmolybdenum containing sulfur, phosphorus and molybdenum. The percent reduction in friction at extreme conditions was 65% at 1.5% JM-1 concentration. The evaluation showed that the film has high strength, the lubricity lasts long, and the lubricity remains stable at 150℃. JM-1 is non-toxic, pollution-free, and has low fluorescence. Drilling fluids treated with JM-1 do not foam. JM-1 has been tried in the highly deviated directional well Yao1-1HF, in which the friction in the horizontal section was reduced by 50%, and tripping and casing running were conducted smoothly, and well Beigang1, in which reaming was done much easier after using JM-1 treated drilling fluid.