Oil well cement slurry high-temperature suspension stabilizer prepared from oil-based shale drilling cuttings

An oil well cement slurry suspension stabilizer prepared from oil-based shale drilling cuttings by a method comprising the following steps:

• (1) performing preliminary pyrolysis on the oil-based shale drilling cuttings produced from a shale formation in a pyrolysis furnace under a heating program in an air atmosphere in which the temperature is raised from room temperature to 350-400° C., the heating time is 30-45 min;
• then the temperature is preserved at 350-400° C., and the heat preservation time is 75-90 min;
• grinding the oil-based shale drilling cuttings after the preliminary pyrolysis and controlling a specific surface area of particle size after grinding to 200-300 m2/Kg;
• and
• (2) placing the oil-based shale drilling cuttings after the preliminary pyrolysis and grinding in a corundum crucible and putting the corundum crucible in a resistance furnace, and performing heat treatment for a second time under conditions as follows:
• the temperature is raised from room temperature to 800° C., the heating time is 45-60 min;
• then the temperature is preserved at 800° C., and the heat preservation time is 60-75 min;
• then the temperature is continuously raised to 1000° C., and the heating time is 30-45 min;
• then the temperature is preserved at 1000° C., and the heat preservation time is 60-90 min;
• then, cooling in a quenching and shock cooling manner, drying at 60° C. for 24 h, and grinding to obtain powder having a specific surface area of 400 m2/Kg, thereby which the oil well cement slurry suspension stabilizer is prepared.