Chemical reagents for drilling

Purpose

WellFix PFD defoamer is designed to be used in the oil and gas industry in the well construction and workover processes to prevent process fluids defoaming. WellFix PFD performs effectively as a well killing, suspension and casing process fluids additive. It is compatible with all types of cements and cement additives used for a slurry improvement. It does not affect a slurry rheological and filtration characteristics.

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Physical and chemical properties

Property

Standard

Appearance

Liquid of yellow to dark-brown color

Characteristic of effective defoaming, %, min

Freezing point, °C, max

-15

Recommendations to application

WellFix PFD defoamer recommended dosage is 0.1% to 0.4% based on dry cement mass. The
detailed dosage is determined in advance according to the customer specification.