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US 2012/0004146 A1Published application
Surfactant Additives Used to Retain Producibility While Drilling
AssigneeHalliburton Energy Services, Inc.
InventorsRyan Van Zanten, David Horton, Per-Bjarte Tanche-Larsen
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Abstract
A method comprises providing a drilling fluid comprising: an aqueous fluid; and a microemulsion surfactant; and drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the microemulsion surfactant forms a microemulsion with the oleaginous fluid within the well bore. In accordance with the method, the subterranean formation has a retained producibility greater than about 50%.
Claims27
A method comprising:
- providing a drilling fluid comprising:
- an aqueous fluid;
- and
- a microemulsion surfactant;
- and
- drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the microemulsion surfactant forms a microemulsion with the oleaginous fluid within the well bore.
3 more elements
A method comprising:
- providing a drilling fluid comprising:
- an aqueous base fluid;
- a microemulsion surfactant;
- a non-polar fluid;
- and
- drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the microemulsion surfactant forms a microemulsion with at least the non-polar fluid.
3 more elements
A method comprising:
- providing a drilling fluid comprising:
- an aqueous base fluid;
- and
- a microemulsion surfactant;
- and
- drilling a well bore in a subterranean formation that comprises a pore throat;
- and
- allowing the surfactant to remove an oil block, a water block, or both from the pore throat.
5 more elements
Dependencies are inferred from the claim text.