Preparation and Application of Minor Cationic Polymer Clay Stabilizer PTA
Liu Lin(Petroleum Engineering College,Yangtze University,Jingzhou 434023)
Minor cationic polymer clay stabilizer PTA was synthesized with epichlorohydrin and dimethylamine as monomers and potassium persulfate-sodium sulfite as initiating agent.The anti-swelling performance of PTA was studied,the results showed that PTA clay stabilizer had good inhibition of clay from hydration and swelling.A kind of drilling fluid resistant to tempreture and pollution with strong inhibition was designed,the viscosity and shear force of PTA kept stable,and it could prectect reservoirs with the permeability recovery more than 85%,and it could meet the requirements of drilling operation.
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