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US 11,111,428 B2Granted
Thermally-stable, non-precipitating, high-density wellbore fluids
AssigneeHalliburton Energy Services, Inc.
InventorsCato R. McDaniel, William W. Shumway, Timothy Harvey
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Abstract
A wellbore treatment fluid comprising: a base fluid; and a water-soluble salt, the salt comprising: a cation; and an anion, wherein the anion is selected from phosphotungstate, silicotungstate, phosphomolybdate, and silicomolybdate. The treatment fluid can have a density greater than or equal to 13 pounds per gallon. A method of treating a portion of a subterranean formation penetrated by a well comprising: introducing the treatment fluid into the well.
Claims20
A system comprising:
- a wellbore that penetrates a subterranean formation;
- and
- a treatment fluid comprising:
- (A) a base fluid;
- and
- (B) a water-soluble salt, the salt comprising:
- (i) a cation selected from ammonium, phosphonium, quaternary amines, poly-quaternary amines, and rare earth metals;
- and
- (ii) an anion, wherein the anion is selected from phosphotungstate, silicotungstate, and silicomolybdate.
6 more elements
A wellbore treatment fluid comprising:
- a base fluid;
- and
- a water-soluble salt, the salt comprising:
- a cation selected from ammonium, phosphonium, quaternary amines, poly-quaternary amines, and rare earth metals;
- and
- an anion, wherein the anion is selected from phosphotungstate, silicotungstate, and silicomolybdate.
3 more elements
Dependencies are inferred from the claim text.