① Introduction：The main functions of CMC or PAC are thickening and water-retention during the extraction of oil and gas process.
1. Good salt tolerance,anti-bacterial property,less dosage and high yield；
2. Fluid loss reduction ,the viscosity improvement and strong suspending capacity；
3. Environmental friendly,nontoxic,harmless and odorless；
4. Good liquidity,convenient to construction,supply instant type PAC to improve drilling efficiency.
③ Standard： GB/T5005-2010.
④ Type： HDO03 series and PAC series.