drilling fluid phpa/drilling fluid phpa in netherlands

drilling fluid phpa/drilling fluid phpa in netherlands
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  • What is PHPA mud?
  • [Drilling Fluids] A class of water muds that use partially hydrolyzed polyacrylamide (PHPA) as a functional additive, either to control wellbore shales or to extend bentonite clay in a low-solids mud. As a shale -control mud, PHPA is believed to seal microfractures and coat shale surfaces with a film that retards dispersion and disintegration.
  • Is PHPA a shale control mud?
  • As a shale -control mud, PHPA is believed to seal microfractures and coat shale surfaces with a film that retards dispersion and disintegration. KCl is used as a shale inhibitor in most PHPA mud designs.
  • Can KCl/PHPA shale inhibition system be used as drilling fluid?
  • The present KCl/PHPA shale inhibition system can advantageously be used as drilling fluids required for drilling in any shale formation, provided that the formulation of the mud must be optimized. Hydrophobically associating polyacrylamides and their partially hydrolyzed derivatives prepared by post-modification.
  • 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.