To reduce viscosity of raw starch size and enhance the adhesion ability to pure cotton yarn, starch reducingviscosityagent SPU was developed by three agents and suitable ratio.
A water-base viscosity-reducingagent is used to regular steam alternately inflow-outflow well or heat-water-filling well, which can promote petroleum extraction rate.
本发明涉及到在稠油开采过程中使用耐高温水基降粘剂可以大幅度提高石油采收率。
3
Such as the synthesis of polyether-based water-reducingagent, by adding the less amount of monomer APEG50, the viscosity of superplasticizer increase, and the cement paste test to maintain reduced.