| 摘要 |
A novel mud system and method reduce torque on drilling surfaces and coat geological formations to reduce the chances of formation reaction. The mud system comprises a fluid having weighting materials and a viscosifier. An additive in the form of water repellent particles is interspersed in the fluid. The water repellent particles comprise natural graphite having a particle size of less than 25 microns, a silicate material having a particle size of less than 15 microns, a silicone material, and processed wax treated with polyglycol. A method for reducing torque on drilling surface includes providing a drilling fluid, combining the above-identified additive with the drilling fluid, and allowing the drilling fluid and the additive to fill and level contact areas. |
