Reversible oil-based mud
AssigneeMi LLC
InventorsPawilai CHINWANGSO, Hui ZHANG, Changping SUI, Paulo PAUFERRO
Life of this patent
Estimating the term…
Abstract
A wellbore fluid may include a non-oleaginous internal phase, an oleaginous external phase, and an emulsifier having a molecular weight of at least 700 daltons, whereby the emulsifier may include at least one tertiary amine. A method of completing a wellbore operation may include injecting a wellbore fluid downhole, the wellbore fluid including a non-oleaginous internal phase, an oleaginous external phase, and an emulsifier having a molecular weight of at least 700 daltons. The emulsifier may include at least one tertiary amine. The method may further include injecting a wash fluid comprising a protonating agent downhole.
Claims18
A wellbore fluid comprising:
- a non-oleaginous internal phase;
- an oleaginous external phase;
- and
- an emulsifier having a molecular weight of at least 700 daltons, wherein the emulsifier comprises at least one tertiary amine.
A method of completing a wellbore operation, the method comprising:
- injecting a wellbore fluid downhole, the wellbore fluid comprising:
- a non-oleaginous internal phase;
- an oleaginous external phase;
- an emulsifier having a molecular weight of at least 700 daltons, wherein the emulsifier comprises at least one tertiary amine.
Dependencies are inferred from the claim text.