Gilsonite property in Drilling

When Gilsonite is added to oil- and water-based drilling fluids, it partially melts or deforms, plugging off micro-fractures in the rock and smearing the inside of the wellbore to make a tight.

The dissolved Gilsonite also increases drilling fluid viscosity, providing lubrication, and also together with the sealing off and stabilization of problem rock around the well bore so helps prevent the drill pipe from getting stuck in the well.

It has been well documented that appropriately formulated Gilsonite products can minimize hole collapse in formations containing water-sensitive, sloughing shales and reduce stuck pipe problems by forming a thin wall cake and an inter-matrix filter cake.

Also oil based that the addition of Gilsonite to oil well cements reduces slurry weight without loss of compressive strength and acts as an effective bridging and plugging agent to seal fractures in weak formations while cementing.

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