前苏联专利1736985-Al介绍了一种新型抗高温水基泥浆体系,它含有8％～40％的粘土,1％～3％氧化镁,2％～6％木质素磺酸盐。该体系用氧化镁作抑制剂,木质素磺酸盐作稳定剂;据称这种体系具有较低的粘度和良好的高温稳定性,可用200℃以上的井中。其作用机理是在粘土表面上形成氢化硅酸镁和氢化铝酸镁,它们比粘土矿物抗温 The former Soviet Union Patent No. 1,736,985-Al describes a novel high temperature resistant water-based mud system containing 8% -40% clay, 1% -3% magnesia and 2% -6% lignin sulfonate. The system uses magnesium oxide as an inhibitor and lignosulfonate as a stabilizer; this system is said to have lower viscosity and good high temperature stability and can be used in wells above 200 ° C. The mechanism of action is to form magnesium hydride and magnesium hydride aluminate on the clay surface, which are more resistant to temperature than clay minerals