Controlling the formation of polymer-metal complexes in wellbore operations
AssigneeHalliburton Energy Services, Inc.
InventorsHong SUN, Dong SHEN, Gladys Rocio MONTENEGRO
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Abstract
Treatment fluids and associated methods for treating a subterranean formation. An example method includes introducing a treatment fluid into a wellbore penetrating the subterranean formation. The treatment fluid includes a competitive metal binder selected from the group consisting of polyamino polyether methylene phosphoric acid, hydoxyethylamino-di(methylene phosphoric acid), and a combination thereof; a polymer capable of forming a polymer-metal complex; and an aqueous fluid. The method further includes contacting a metal ion with the treatment fluid after introduction of the treatment fluid into the wellbore and binding the metal ion with the competitive metal binder.
Claims20
A method for treating a subterranean formation, the method comprising:
- introducing a treatment fluid into a wellbore penetrating the subterranean formation, the treatment fluid comprising:
- a competitive metal binder selected from the group consisting of polyamino polyether methylene phosphoric acid, hydoxyethylamino-di(methylene phosphoric acid), and a combination thereof;
- a polymer capable of forming a polymer-metal complex;
- and
- an aqueous fluid;
- contacting a metal ion with the treatment fluid after introduction of the treatment fluid into the wellbore;
- and
- binding the metal ion with the competitive metal binder.
A treatment fluid composition comprising:
- a competitive metal binder selected from the group consisting of polyamino polyether methylene phosphoric acid, hydoxyethylamino-di(methylene phosphoric acid), and a combination thereof;
- a polymer capable of forming a polymer-metal complex;
- and
- an aqueous fluid.
A system for treating a subterranean formation, the system comprising:
- a treatment fluid composition comprising:
- a competitive metal binder selected from the group consisting of polyamino polyether methylene phosphoric acid, hydoxyethylamino-di(methylene phosphoric acid), and a combination thereof;
- a polymer capable of forming a polymer-metal complex;
- and
- an aqueous fluid;
- and
- mixing equipment configured to mix the competitive metal binder, the polymer, and the aqueous fluid;
- and
- a pump fluidly coupled to a tubular extending into a wellbore penetrating the subterranean formation, wherein the tubular is configured to circulate or otherwise convey the treatment fluid composition in the wellbore.
Dependencies are inferred from the claim text.