Adding Gilsonite during cementing operations enhances the characteristics that are critical to effectively cementing the casing, isolating hydrocarbon formations and preventing annular gas flow.

With its unique physical and chemical properties, Gilsonite provides a range of important benefits in slurry and set cement that are unmatched by any other single additive.

Cement slurry benefits

Increases yield

Reduces slurry weight

Controls free water

Lowers slurry water ratio

Promotes favorable rheologies resulting in lower ECDs

Prevents lost circulation

Scours wellbore/enhances mud removal

Set cement benefits

Maintains compressive strength, unlike coal or fly ash

Increases flexibility

Reduces cracking

Heals microfissures

Reduces permeability

Strengthens bond to the formation and the casing

Reduces environmental risk

Assures zonal isolation

Gilsonite eliminates the problems of free water

By controlling free water, Gilsonite helps stabilize slurry and eliminates the need for – and cost of – additional free-water-control agents. As a lost circulation material, it also improves zonal isolation by preventing water channeling on the upper side of the wellbore.

Self-healing properties help maintain zonal isolation
Gilsonite is flexible, deformable, swellable, impermeable and non-porous. These characteristics give Gilsonite self-healing properties that can plug induced microfissures in the cement sheath.