Calcium Carbonate Coated Tracers For Assessing Acid Stimulation Operations In A Hydrocarbon Well

A method of assessing acid stimulation of a hydrocarbon well, the method comprising:

• pumping a first phase of a fracturing slurry in a single fracturing stage comprising first encapsulated tracer particles into a formation zone of the hydrocarbon well, wherein the first encapsulated tracer particles comprise a first tracer coated with calcium carbonate;
• pumping a second phase of the fracturing slurry in the single fracturing stage comprising second encapsulated tracer particles into the formation zone of the hydrocarbon well, wherein the second encapsulated tracer particles comprise a second tracer coated with calcium carbonate;
• at a subsequent time after pumping the first phase of the fracturing slurry and the second phase of the fracturing slurry into the formation zone, pumping an acid solution into the hydrocarbon well;
• and
• measuring an amount of the first tracer and the second tracer in a produced fluid from the formation zone of the hydrocarbon well.

A method of assessing an acid stimulation of a horizontal portion of a hydrocarbon well, the method comprising:

• pumping a first gravel slurry comprising first encapsulated tracer particles into a first phase of a gravel pack in the hydrocarbon well, the first phase of the gravel pack located proximate a heel of the horizontal portion of the hydrocarbon well, wherein the first encapsulated tracer particles comprise a first tracer coated with calcium carbonate;
• pumping a second gravel slurry comprising second encapsulated tracer particles into a second phase of the gravel pack in the hydrocarbon well, the second phase of the gravel pack located farther from the heel of the horizontal portion of the hydrocarbon well than the first phase of the gravel pack, wherein the second encapsulated tracer particles comprise a second tracer coated with calcium carbonate;
• at a subsequent time after pumping the first gravel slurry and the second gravel slurry, pumping an acid solution into the hydrocarbon well;
• and
• measuring an amount of the first tracer and the second tracer in a produced fluid from the hydrocarbon well.