POLY-PLUS High-Molecular-Weight Liquid Clay Inhibitor | Schlumberger

POLY-PLUS

High-molecular-weight liquid clay inhibitor

POLY-PLUS high-molecular-weight liquid clay inhibitor is an anionic liquid designed to provide cuttings encapsulation and shale stabilization. It also acts as a viscosifier, friction reducer, and flocculant.

POLY-PLUS inhibitor can be used in mud systems using makeup waters from freshwater to saltwater. It is also effective in salt muds, although slightly higher concentrations may be required compared with typical concentrations of 0.75 to 3 lb/bbl [2.1 to 8.5 kg/m3].

Workers on a rig
POLY-PLUS liquid clay inhibitor provides cuttings encapsulation and shale stabilization, improving drilling performance.

POLY-PLUS inhibitor is certified to NSF/ANSI 60.

How POLY-PLUS inhibitor improves drilling

  • Provides excellent cuttings encapsulation and limits cuttings dispersion
  • Delivers improved shale stabilization
  • Enhances drill-solids removal in clear- water systems and the carrying capacity of foams
  • Mixes easily with rapid yield
  • Exhibits a low pour point of –20 degF [–28.9 degC] for use in cold climates
  • Can be used to viscosify clear-water, low-solids drilling fluids
  • Improves the lubricity of most mud systems, particularly nondispersed systems, and dispersed mud, when used in combination with a lubricant
  • Helps prevent bit balling and balling on stabilizers and bottomhole assemblies by coating and lubricating solids

Flexible application

Clear-water fluids
In clear-water, solids-free drilling fluids, POLY-PLUS inhibitor increases viscosity and enhances solids removal by flocculating the undesired solids. It also provides cuttings encapsulation and improved wellbore stability. This system is frequently used in slimhole, continuous-coring applications. Adding 0.5 to 1.75 lb/bbl [1.4 to 5 kg/m3] enhances solids removal by flocculating solids.

Low-solids, nondispersed (LSND) muds
POLY-PLUS inhibitor is well suited to LSND systems. In reduced-bentonite muds, the inhibitor serves as a bentonite extender to increase viscosity and as a flocculant to more efficiently remove drill solids. It also encapsulates cuttings and improves wellbore stability.

Weighted muds
In weighted muds, this inhibitor provides cuttings encapsulation, improved wellbore stability, secondary viscosity, and improved filtercake integrity.

POLY-PLUS sweeps
Viscous POLY-PLUS inhibitor sweeps are effective for periodic hole cleaning. Circulating a sweep through the well or borehole helps clear accumulated cuttings and maintain a clean hole.

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