NuWell 220 Clay Dispersant


NuWell 220 Clay Dispersant

– Nu-Well 220 dispersant polymer uses liquid dispersant
chemistry specifically designed to
remove mud and clay from the well environment
– Successfully develops new wells without using phosphate
– Eliminates food source for bacteria (100 percent water
soluble, readily flushed from well)
– Rehabilitates old wells plugged with clays, silts and fines
– NSF approved for potable water well use

In new well systems, use Nu-Well 220 dispersant polymer as
you would phosphates for drilling mud breakdown and well
development. For optimal removal of bentonite drilling fluids,
separately pre-treat the well with 1,500 ppm chlorine to break
down the polymers that are included in most commercial
bentonite products. Determine borehole volume, and apply
Nu-Well 220 dispersant polymer at the rate of 1 gal. per 500
gal. of water. Vigorously agitate by mechanical means for
several hours (approximately 1/2 hour per 20 ft. of intake). If
left in the well overnight, agitate before pumping out. Allow a
minimum of 6 to 8 hours contact time, downhole.
In older well systems use, Nu-Well 220 dispersant polymer
to remove fine sands, mud and clays that have filled in the
gravel pack and borehole. Use at a rate of 1 gal. per 300
gal. of water. Vigorously agitate (by mechanical means),
allowing the solution to stand in the well overnight and
repeat the agitation the next day, before pumping out. Allow
a minimum of 6 to 8 hours contact time, downhole.
Physical properties, shipping and

Appearance: Clear, slight amber colored liquid
Density: 10.5 lbs./gal.
Specific Gravity: 1.27
pH (as shipped): 7.0
Freeze point: 20ºF (-3ºC)
Solubility: 100%

Use range: 0.002 to 0.5% by volume
– Not regulated as a hazardous material under 49CFR
172.101, RECRA, SARA and CERCLA; however, in storage
or use, avoid contact with strong acids or alkaline-based
– 1 gal. and 5 gal. containers can be shipped by UPS ground
– Additional physical and handling data are available on
the product SDS
– Nu-Well 220 dispersant polymer is available in 1, 5, 30 and
55 gal. containers

Note: Allowance for additional surface volume should be treated
with an additional 1 gal. Nu-Well 220 per 500 gal. of surface system
volume (2 l/m³ of surface system volume)

Contact ECT for pricing information.