... PHPA high molecular weight powder 2.Approved by SGS,ISO 3.Export to Russia,south America,korea 4.Use for oil drilling ... 35%≤60min12-25million4.Application & Features1) Materials used for drilling mud additives, can reduce the friction of the ... rate and the footage, reduce the time for drilling the plug, the collapse of effective anti-wells, ... of oil.5.Load pictures for reference PHPA for oil drilling