high quality tags:phpa for drilling muds china polyacrylamide

high quality tags:phpa for drilling muds china polyacrylamide
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  • What is PHPA mud system?
  • SPE Drill Eng 7 (03): 191–199. Mud systems with partially hydrolyzed polyacrylamide polymer (PHPA) are used worldwide and have proved effective and versatile for inhibiting troublesome shale formations. We made significant changes in the generally recommended compositions for these systems and developed a systematic approach to applying them.
  • Are polymer muds a good replacement for drilling fluids?
  • Caenn and Chillingar (1996) reviewed the state-of-the-art for drilling fluids in the mid-1990′s – while not including pure polymer-based fluids (i.e. without clay present), they noted a number of “polymer muds or salt/polymer muds” beginning to appear as possible replacements, e.g. polyanionic cellulose.
  • How does PHPA affect fluid rheology?
  • The introduction of higher molecular weight synthetic polymers typified by partially hydrolysed polyacrylamide (PHPA) allowed the same effect on fluid rheology to be achieved at much lower additive concentrations, a major practical advantage.