Scale Inhibitors

The term Scale refers to water-borne mineral deposits and suspended solids that precipitate from oilfield waters. The accumulation of such mineral scale deposits downhole can reduce oil production or even block the flow into a production well. These mineral deposits in the surface facilities also can block normal flow or disrupt the efficiency of the separation and processing of produced fluids to meet their specified quality requirements.

Scale inhibitors can be applied down hole in a problem production well or in the surface facilities to delay the onset of these undesirable precipitates. If properly selected, the scale inhibitor treatment concentrations of only a few ppm into the target stream may be effective to prevent scale problems.

ChemEOR scale inhibitors have a wide application and are designed to prevent the formation of common calcium and barium scales even under severe conditions, and at a good value.

Laboratory data show over 99% inhibition against calcium and barium precipitation in bottle tests using the NACE Standard TM0374 test procedure. This illustrates high efficiency at low product dosage.

  • • Effective for barium/calcium sulfate, calcium carbonate
  • • Excellent performance against calcium ions
  • • Applied widely in squeeze treatments, topside production and seawater injection
  • • Hydrolytically and thermally stable
Trade Name Description
SI-111 Phosphonate scale inhibitor
SI-112 Proprietary blend of polymer and phosphonates
SI-731 Economical scale inhibitor with Excellent control over CaCO3 and CaSO4
SI-731-W Winterized version of SI-731
SI-732 Excellent CaCO3, CaSO4, and BaSO4 inhibitor
SI-761 Superior BaSO4 inhibitor
SI-1801 Proprietary silicate scale inhibitor


Outperforms commonly used phosphonates and polyacrylates types scale inhibitors against barium/calcium carbonate, calcium sulfate

Detectable in oilfield brines for a good control of squeeze treatments. Provides excellent adsorption/desorption profiles

Hydrolytically and thermally stable to at least
180 °C (356 °F)