Exothermic drilling fluid composition and method of use
AssigneeSaudi Arabian Oil Company
InventorAbdulrahman Abdulaziz Al Mulhem
Life of this patent
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Abstract
Described is a drilling fluid composition with enhanced hole cleaning properties and a method of its use. Following an indication of sticking of a drill pipe during a drilling operation, a drilling fluid composition, including a first exothermic reactant, is injected into a subterranean formation. Then, a drilling fluid composition, including a second exothermic reactant, is injected into the subterranean formation. An exothermic reaction is allowed to occur between the first exothermic reactant and the second exothermic reactant within the subterranean formation.
Claims11
A method for using an exothermic drilling fluid composition during drilling operations, the method comprising:
- evaluating a current state of a drill pipe during a drilling operation within a subterranean formation;
- following an indication of sticking of the drill pipe during a drilling operation due to drill cuttings, injecting a first drilling fluid composition comprising an initial quantity of a first exothermic reactant and bentonite into the subterranean formation;
- following injecting of the first drilling fluid composition comprising the first exothermic reactant, injecting a second drilling fluid composition comprising an initial quantity of a second exothermic reactant that is different from the first exothermic reactant and bentonite into the subterranean formation,
- wherein the first and second drilling fluid compositions comprising the first and second exothermic reactants, respectively, are injected separately;
- allowing an exothermic reaction to occur between the first exothermic reactant and the second exothermic reactant within the subterranean formation,
- wherein the exothermic reaction produces gas and water such that interfacial tension between the drilling fluid composition and the gas causes an increased lifting effect for the drill cuttings, thereby reducing friction on the drill pipe;
- and
- evaluating a new state of the drill pipe during the drilling operation.
Dependencies are inferred from the claim text.