Polyol can effectively prevent clays from dispersing, and it can reduce swelling pressure.

PFF-I is a proven drilling fluid additive which has many advantages and can be widely applied.

PISP-1 has good elasticity and can form elastic deformation under the differential pressure to adapt to the pore of different shapes and sizes.

PSG provides low chemical activity of drilling fluid and enhanced stability of shale.

PNOP-1 forms nano-solid sealing material through special technology.

PPNH is a high temperature and salt resistant synthetic polymer filtrate reducer capable of reducing viscosity.