Partially Hydrolyzed
Polyacrylamide – PHPA is an
encapsulating polymer that is
normally used in conjunction with
potassium chloride to provide a
high degree of shale inhibition. Partially Hydrolyzed
Polyacrylamide – PHPA is anionic, attaches itself to the positively
charged edges of clay platelets, thus binding the particles
together. It can inhibit cuttings
dispersion to make solids
removing easily and effectively. The adsorbed polymer also lowers
the speed of water penetration
into the shale, thus improving
well bore stability. Partially Hydrolyzed
Polyacrylamide – PHPA is not
adversely affected by common
contaminants. However, simultaneous high-
temperature/high-PH conditions
should be avoided, as polymer
hydrolysis can release traces of
ammonia gas. Partially Hydrolyzed
Polyacrylamide – PHPA is added
as a treatment for the cuttings
and the sides of the well bore, and should be added on a regular
basis while drilling shale sections. It is a co-polymer of anionic
character and high
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Trade Leads Directory -> All Trade Leads -> Chemicals -> Chemical Additives -> Partially Hydrolyzed Polyacrylamide
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