Compositions and methods for treatment of well bore tar
AssigneeHalliburton Energy Services, Inc.
InventorsPhilip Wayne Livanec, Greg Paul Perez
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Abstract
Of the many compositions and methods provided herein, one method includes a method comprising: contacting tar resident in a well bore with a tar stabilizing polymer comprising at least one polymer selected from the group consisting of a styrene polymer, an acrylate polymer, a styrene-acrylate polymer, and any combination thereof; and allowing the tar stabilizing polymer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface.
Claims35
A method for treatment of well bore tar comprising:
- contacting tar resident in a well bore with an aqueous-based treatment fluid comprising a tar stabilizing polymer comprising a copolymer of styrene co-monomers wherein the copolymer of styrene co-monomers comprises the styrene co-monomers in an amount in the range of about 99% to about 100% by weight, wherein the copolymer of styrene co-monomers is essentially free of acrylate and acrylic acid, and wherein the tar stabilizing polymer is dispersed in the aqueous-based treatment fluid as a latex emulsion or a powder;
- and
- allowing the aqueous-based treatment fluid to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface;
- and
- after the aqueous-based treatment fluid has interacted with the tar, the tar is removed from the well bore by filtering the tar from the aqueous-based treatment fluid.
A method for treatment of well bore tar comprising:
- contacting tar resident in a well bore with a treatment fluid comprising a tar stabilizing polymer comprising at least one polymer selected from the group consisting of a styrene polymer, an acrylate polymer, a styrene-acrylate polymer, and any combination thereof;
- and
- allowing the treatment fluid to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface;
- and
- after the treatment fluid has interacted with the tar, the tar is removed from the well bore by filtering the tar from the treatment fluid.
A method for treatment of well bore tar comprising:
- contacting tar resident in a well bore with an aqueous-based treatment fluid comprising a tar stabilizing polymer comprising at least one polymer selected from the group consisting of (i) a non-ionic copolymer of acrylate co-monomers, wherein the copolymer of acrylate co-monomers comprises the acrylate co-monomers in an amount of about 99% to about 100% by weight, and wherein the copolymer of acrylate co-monomers is essentially free of styrene, and (ii) a copolymer of acrylic acid formed by polymerizing acrylic acid, wherein the tar stabilizing polymer is dispersed in the aqueous-based treatment fluid as a latex emulsion or a powder;
- and
- allowing the aqueous-based treatment fluid to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface;
- and
- after the aqueous-based treatment fluid has interacted with the tar, the tar is removed from the well bore by filtering the tar from the aqueous-based treatment fluid.
Dependencies are inferred from the claim text.