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WELL-KLEAN© PRODUCT · DESCALER

Well-Klean© Pre-blend Descaler

Well-Klean© Pre-blend Descaler is an organically inhibited, catalyzed acid blend with dispersion, sequestration and chelation agents, NSF/ANSI/CAN 60 listed as a well rehabilitation aid (off-line use, flushed before return to service). It dissolves calcium carbonate and calcium sulfate scale, iron and manganese oxides, silicate scale and bio-mineral composites on screens, in the gravel pack and in the near-well formation.

Used in the Well-Klean© water well rehabilitation program · Applied by authorized dealers under a well-specific protocol · NSF/ANSI/CAN 60 listed · Danger: corrosive (HCl-based), see SDS and label

WHAT IS WELL-KLEAN© DESCALER?

Inhibited, catalyzed and deep, where standard acid is fast, corrosive and shallow.

Standard hydrochloric acid reacts at the surface and is spent before it reaches the deposits that matter; it is also corrosive to the casing it is meant to help. Descaler is catalyzed so it keeps working through the deposit, and inhibited to limit attack on steel, stainless and PVC during multi-day soaks at prescribed rates (see the label: neutralize and passivate after descaling).

Mineral scale dissolves in a 12-hour soak; oxide metals in a 72-hour soak. The result is measured in the pumping test: specific capacity recovers, operating costs drop and the asset life of the well is extended. Effluent is neutralized before disposal.

SCALE DESCALER DISSOLVES

Three kinds of mineral fouling, one chemistry.

01

Calcium carbonate and calcium sulfate

Carbonate and sulfate scale that blocks screen slots, cements the gravel pack and raises energy costs.

02

Iron and manganese oxides

Metal oxide deposits that narrow flow paths and feed iron bacteria. Dissolved in a 72-hour soak.

Biofilm in wells →

03

Silicate scale and bio-mineral composites

Mixed mineral and biological deposits that mechanical cleaning cannot dissolve and that reseed fouling when fragmented.

Rehabilitation process →

WHERE DESCALER FITS

The scale step in the Well-Klean© protocol.

Every Well-Klean© scope of work is built from the well's own data: casing alloy, age, groundwater quality, water level, depth and diameter, perforation type, bacteria risk, pump depth and pumping rate. Descaler is prescribed as the scale-dissolution step, usually after WaterSOLV™ BC has removed the biofilm that shields the scale, and followed by neutralization, flushing and a pumping test.

BEFORE

Biofilm removed first

Where bacteria are present, BC degrades the polysaccharide matrix so the acid can reach the mineral deposit.

WITH CONCENTRATE

Compromised casings

Well-Klean© Concentrate is added for wire-wrap steel screens, older or compromised casings and heat exchangers to increase chemical functionality while minimizing corrosion.

AFTER

Neutralize, flush, prove it

Descaler is neutralized, the well is flushed and disinfected, and the pumping test verifies the recovery.

Rehabilitation process →

DATA BEFORE CHEMISTRY

Eight data points shape the Descaler prescription.

HCT collects the well's data and a groundwater sample before any product is recommended: casing alloy, age of the well, groundwater quality, water level, depth and diameter, perforation type, bacteria and biological risk, pump depth and column pipe, and pumping rate. Use rates, soak times and sequence are then prescribed per well.

01

Groundwater quality

Hardness, iron, manganese and silica in the water decide the deposit chemistry and the soak time.

02

Casing and screen

Alloy, age and perforation type decide the inhibitor level and whether Concentrate is added.

03

Downhole video

Video before and after shows the deposit and confirms the slots are open once treatment is complete.

HYDRAULICS

Specific capacity recovers

Flow paths through the screen, gravel pack and formation reopen.

OPERATIONS

Lower operating cost

Less drawdown and less energy per gallon pumped.

ASSET

Extended well life

Rehabilitate instead of replace.

CASE STUDIES

Scale removed, capacity measured.

THOMAS WELL NO. 5

Back to 2,090 gpm

A well that pumped off at about 270 gpm after a plug-back, turned over at 2,090 gpm (27.87 gpm/ft) after Well-Klean© — 91% of its 1990 rating.

270 → 2,090

gpm, same well

Read the case studies →

PARKVILLE, COLORADO · MUNICIPAL

Energy savings report

A municipal well rehabilitated with Central Pump Company, with the estimated annual energy savings documented.

Municipal

well rehab, Colorado

Read the case studies →

ARIZONA · IRRIGATION AND GOLF WELLS

Restored to original output

Steel, PVC and 16-inch irrigation wells in Prescott, Oak Creek, East Valley and Cochise County restored to new-well output.

100%

of slots open after treatment

NEXT STEP

Send HCT the data. We will scope the treatment.

Fill out the well data form and send it with a groundwater sample; HCT returns a preliminary scope built on the well's actual condition. Descaler is sold and applied through authorized Well-Klean© dealers in 5-gallon poly pails (6-pail minimum order; pails can be mixed and matched), 55-gallon poly drums and 265-gallon IBC totes.

KEEP LEARNING

HCT, LLC · Well-Klean© Pre-blend Descaler · NSF/ANSI/CAN 60 Listed · Scottsdale, Arizona

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