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US 11,078,401 B2Granted
Rare earth oxide as a weighting and bridging agent
AssigneeHalliburton Energy Services, Inc.
InventorSandeep Chavan
Life of this patent
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Abstract
Methods of treating a subterranean formation and treatment fluids are discussed herein. The methods generally include treating the subterranean formation with a rare earth oxide by providing a first treatment fluid having a density of at least about 10 pounds per gallon including a rare earth oxide; and introducing the first treatment fluid into the subterranean formation.
Claims20
A method of treating a subterranean formation, comprising:
- providing a first treatment fluid having a density of at least about 10 pounds per gallon (ppg) comprising samarium oxide;
- introducing the first treatment fluid into the subterranean formation;
- allowing the first treatment fluid to deposit a filter cake on the subterranean formation;
- introducing an acid or acid precursor into the subterranean formation;
- and
- allowing the acid or an acid generated from the acid precursor to dissolve the filter cake.
3 more elements
A method of preventing fluid loss in a subterranean formation, comprising:
- providing a first treatment fluid having a density of at least about 10 pounds per gallon (ppg) comprising samarium oxide;
- introducing the first treatment fluid to a first location of the subterranean formation;
- allowing the first treatment fluid to form a filter cake to prevent fluid loss from the first location to a second location of the subterranean formation;
- introducing hydrochloric acid or nitric acid into the subterranean formation;
- and
- allowing the hydrochloric acid or nitric acid to dissolve the filter cake.
3 more elements
Dependencies are inferred from the claim text.