CMC and PAC can be widely used in oil drilling,having good water loss control capability,PAC product is ... loss)40g/l salt water,mpas--<5-Satureted salt water,mpa.s--<8-Apparent viscosity(At 10mpa.s of water loss ... )40g/l salt water,mpas--<4-Satureted salt water,mpa.s--<6-Water lossAt 5.7g/l of PAC concentration ... os PAC concentration,Pa->19.2-<1.5 CMC drliing oil grade