Acidizing fluids and methods for use in subterranean formations
AssigneeHalliburton Energy Services, Inc.
InventorsRavikant S. Belakshe, Ramesh Uppuluri, Sumit Ramesh Songire
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Abstract
Methods for acidizing subterranean formations may include introducing into a wellbore penetrating the subterranean formation having a temperature of about 275° F. or greater a treatment fluid comprising an aqueous fluid, a Lewis acid catalyst and a precursor; wherein the precursor is selected from the group consisting of a saccharide, a saccharide derivative, and a combination thereof; and reacting the precursor and the Lewis acid catalyst to yield an organic acid in a portion of the subterranean formation, a portion of the wellbore, or both.
Claims20
A method comprising:
- introducing into a wellbore penetrating a subterranean formation having a temperature of about 275° F. or greater a treatment fluid comprising an aqueous fluid, a Lewis acid catalyst, and a precursor, wherein the precursor is selected from the group consisting of a saccharide, a saccharide derivative, and a combination thereof;
- and
- reacting the precursor and the Lewis acid catalyst to yield an organic acid in a portion of the subterranean formation, a portion of the wellbore, or both.
A treatment fluid comprising:
- a precursor selected from the group consisting of a saccharide, a saccharide derivative, and a combination thereof;
- and
- a metal-based Lewis acid catalyst that comprises at least one selected from the group consisting of:
- aluminum, boron, silicon, tin, titanium, zinc, iron, copper, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium.
A system comprising:
- a wellhead with a tubular extending therefrom and into a wellbore in a subterranean formation;
- and
- a pump fluidly coupled to a tubular, the tubular containing a treatment fluid comprising an aqueous fluid, a Lewis acid catalyst, and a precursor, wherein the precursor is selected from the group consisting of a saccharide, a saccharide derivative, and a combination thereof.
Dependencies are inferred from the claim text.