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US 11,591,512 B2Granted
Using acidic balls for acid stimulation in carbonate reservoirs
AssigneeSaudi Arabian Oil Company
InventorAyman Nezar Alharbi
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Abstract
A method for acid treatment of a wellbore in a carbonate formation is provided. The method includes dropping spacer solids into the well to fill the wellbore to perforations in a casing, dropping acidic solids into the wellbore on the top of the spacer solids, allowing the acidic solids to dissolve on top of the spacer solids forming an acidic solution, and injecting water into the wellbore to force the acidic solution into the carbonate formation.
Claims21
A method for acid treatment of a wellbore in a carbonate formation, comprising:
- dropping spacer solids into the well to fill the rathole of a wellbore up to a perforation zone, wherein the rathole comprises an unperforated section of a wellbore, and wherein the perforations in the perforation zone are made through a casing and into the carbonate formation;
- dropping acidic solids into the wellbore on the top of the spacer solids;
- allowing the acidic solids to dissolve on top of the spacer solids forming an acidic solution proximate to the perforations in the wellbore;
- and
- injecting water into the wellbore to force the acidic solution into the carbonate formation.
2 more elements
Dependencies are inferred from the claim text.