Pilot production and application of anti-high temperature hyperbranched emulsion polymer
With the implementation of the national"deep ground"strategic action,oil drilling is developing towards deep and ultra deep layers.Researching high-performance treatment agents and improving the compre-hensive effects of existing treatment agents(such as temperature and salt resistance,high temperature stabili-ty,shear stability,etc.)plays an important role in promoting the advancement of treatment agent technology and meeting the needs of high-temperature and high-pressure drilling.Sinopec Zhongyuan Oilfield Service Cor-poration adopts reversible addition fracture chain transfer(RAFT)polymerization to break through the restric-tion of linear structure of polymer,synthesize high-temperature hyperbranched lotion polymer for drilling flu-id,and realize industrial production.Results showed that the hyperbranched lotion polymer with the same chemical composition had a low viscosity effect compared with the linear polymer,and its temperature resis-tance and salt resistance had been greatly improved.More than 300 well times of field application showed that it had good temperature resistance,salt resistance and shear resistance,with low dosage and long mainte-nance period.It effectively solved the technical problems such as the suspension stability of deep well ultra-high temperature high-density drilling fluid,salt calcium and acid radical pollution.
drilling fluid treatment agenthyperplasia emulsion polymerfiltration loss agentanti-salt and anti-calcium
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