Oil-based drilling fluid compositions which include layered double hydroxides as rheology modifiers
AssigneesSaudi Arabian Oil Company, Durham University, M-I Drilling Fluids UK Limited
InventorsMusarrat Halima Mohammed, Andrew Whiting, Manohara Gudiyor Veerabhadrappa, Hugh Christopher Greenwell, John Adrian Hall, Gasan Selman Alabedi, Michael Hayward Hodder
Life of this patent
Estimating the term…
Abstract
The present application discloses drilling fluid compositions, methods for making drilling fluids, and methods for drilling subterranean wells utilizing the drilling fluids. According to one embodiment, a drilling fluid composition may include an oil phase, an aqueous phase, and a rheology modifier. The rheology modifier may include a layered double hydroxide, such as Mg/Al-Myristate layered double hydroxide.
Claims20
An oil-based drilling fluid composition comprising:
- base oil in an oil phase;
- water in an aqueous phase;
- a rheology modifier comprising a layered double hydroxide comprising a myristate;
- and
- one or more additives chosen from emulsifiers, wetting agents, fluid-loss control additives, and weighting additives.
A method for making an oil-based drilling fluid composition comprising:
- mixing a base oil, a water-containing component, and a rheology modifier to form an oil-based drilling fluid composition, where:
- the oil-based drilling fluid composition comprises an oil phase comprising the base oil and an aqueous phase comprising the water;
- and
- the rheology modifier comprises a layered double hydroxide comprising a myristate.
A method for drilling a subterranean well, the method comprising:
- providing an oil-based drilling fluid composition, where the oil-based drilling fluid composition comprises:
- base oil in an oil phase;
- water in an aqueous phase;
- a rheology modifier comprising a layered double hydroxide comprising a myristate;
- one or more additives chosen from emulsifiers, wetting agents, fluid-loss control additives, and weighting additives;
- and
- operating a drill in a wellbore in the presence of the oil-based drilling fluid composition.
Dependencies are inferred from the claim text.