Microencapsulated and macroencapsulated drag reducing agents

摘要: High concentration drag reducing agents may be prepared by microencapsulating and/or macroencapsulating polymer agent. The encapsulation performed prior to, during, or after the polymerization of monomer into effective polymer. If is done before during polymerization, a catalyst present, but little no solvent required. result very small scale bulk within capsule. inert capsule shell removed before, introduction encapsulated reducer flowing liquid. No injection probes other special equipment expected to required introduce slurry liquid stream, nor grinding (cryogenic otherwise) necessary form suitable