Polyhedral oligomeric silsesquioxane as rheology booster for invert emulsion oil-based mud
AssigneeSaudi Arabian Oil Company
InventorsJothibasu Ramasamy, Vikrant Wagle
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Abstract
A composition of an invert emulsion oil-based drilling fluid is provided. The composition may include an oil phase and an aqueous phase. The oil phase may include an oleaginous fluid, an organophilic clay-based solid viscosifier, and a liquid viscosifier including a POSS. Further provided is a method of introducing the composition including the POSS into a wellbore. After introduction of the composition into the wellbore, the method includes maintaining wellbore conditions to provide a stable rheological property for a period up to about 96 hours in an HPHT section of a wellbore.
Claims20
A composition of an invert emulsion oil-based drilling fluid formulation, comprising:
- an invert emulsion of an oil phase and an aqueous phase, the oil phase including an oleaginous fluid;
- a solid viscosifier that is an organophilic clay-based viscosifier;
- and
- a liquid viscosifier that is a polyhedral oligomeric silsesquioxane (POSS), wherein the POSS is a glycidyl POSS.
Dependencies are inferred from the claim text.