drilling mud chemicals phpa / partially hydrolyzed in spain

drilling mud chemicals phpa / partially hydrolyzed in spain
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  • What is partially hydrolyzed polyacrylamide (PHPA)?
  • Partially hydrolyzed polyacrylamide (PHPA) is a widely used polymer in the oil and gas industry due to its lesser cost and good water solubility. PHPA is used as a functional additive in water-based drilling fluids. The PHPA mud system stabilizes shale formations and influences cuttings and wellbore stability.
  • How does PHPA mud control shale?
  • For shale-control, PHPA can supposedly seal microfractures, coat shale surfaces with a film that retards dispersion and disintegration. The viscosifying effect of the dissolved high molecular weight polyacrylamide polymer controls the rheological behavior of the PHPA mud.
  • 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.
  • How has PHPA mud changed the drilling process?
  • In wells drilled with PHPA mud, the number of bits was reduced from seven to two, rotating hours were reduced from 128 to 58, drilling progress was increased from 254 to 499 ftlD [77 to 152 mId], and total days were reduced from 12 to 6.