Shale Inhibitors | SLB
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Shale Inhibitors

Control reactive shales while drilling with water-based fluids

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Our portfolio of specially engineered additives is designed to inhibit reactive shales in water-based drilling fluids and systems.

In addition to the shale inhibitors below, we offer POLY-PLUS liquid clay inhibitor, POLY-PLUS RD readily dispersible liquid clay inhibitor, and BLACK FURY readily dispersible liquid asphaltite suspension.

Our portfolio

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UltraSorb Plus premium-performance shale inhibitor
Effective cuttings encapsulation across a range of base brines, including seawater, saturated NaCl, and KCl
UltraSorb Plus™ shale inhibitor provides excellent cuttings encapsulation and clay dispersion inhibition.
UltraLock Plus premium-performance wellbore sealant
For use with freshwater, brine-based aqueous fluids, and nonaqueous fluids
UltraLock Plus wellbore sealant seals formations with nanopermeability, low permeability, and microfractures.
UltraHib Plus premium-performance amine shale inhibitor
Suppresses hydration of reactive clays across a broad range of fluid densities
Reduce clay hydration and enhance cutting integrity with UltraHib Plus amine shale inhibitor.
POROSEAL
Copolymeric filtration-control sealing additive.
POROSEAL additive provides permeability plugging to effectively seal shales and filtercakes.
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Case Study Cornell Earth Source Heat Project

Cornell University contracted SLB to construct, characterize, and drill a 10,000-ft geothermal well on campus.

Tech Report POROSEAL Plus Sealant Guards Against Wellbore Instability Issues in Exposed Heterogeneous Formation

While drilling an interbedded formation consisting of sandstone, siltstone, and coal, an operator experienced tight hole, excessive backreaming, and increased circulation time during tripping that caused formation instability.

Product Sheet ASPHASOL SUPREME Sulfonated Asphalt Shale Inhibitor

A partially water-soluble, water-dispersable sulfonated asphalt.

Product Sheet KLA-CURE Hydration Suppressant

Water-soluble, environmentally acceptable, organic compound to reduce dispersion and swelling of reactive clay formations.

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