CMC and PAC can be widely used in oil drilling,having good water loss control capability,PAC product is a kind of effective wate 1.Specification of PAC ItemHHVLLVD.S.>0.9PH6.0-8.0Moisture,%<10Yield in distilled water,m3/t>400---Yield in 40g/l salt water,m3/t>230---Yield in saturated salt water,m3/t>280---Addition(At 10mpa.s of water loss)40g/l salt water,mpas--<5-Satureted salt water,mpa.s--<8- ...