Compositions and Methods for Treatment of Well Bore Tar
AssigneeHalliburton Energy Services, Inc.
InventorGregory P. 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 treatment fluid comprising a styrene-acrylate polymer; and allowing the styrene-acrylate polymer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface. Another method provided herein includes a method for treating tar sand comprising: contacting the tar sand with a treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand; and allowing the styrene-acrylate polymers to interact with the tar to at least partially separate the tar from the sand.
Claims20
A composition comprising:
- a treatment fluid for treating well bore tar, the treatment fluid comprising:
- a base fluid, and
- a styrene-acrylate copolymer.
A composition comprising:
- a well bore drilling fluid comprising:
- a base fluid,
- a styrene-acrylate copolymer, and
- a weighting agent.
A composition comprising:
- an aqueous treatment fluid for treating well bore tar, the aqueous treatment fluid comprising:
- an aqueous base fluid,
- a styrene-acrylate copolymer in an amount in the range of about 1% to about 70% by volume of the aqueous treatment fluid, the styrene-acrylate copolymer comprising at least one unit selected from the group consisting of a styrene, a substituted styrene, and any derivative thereof;
- and at least one unit selected from the group consisting of -acrylate, -methacrylate, -ethylacrylate, -propylacrylate, -butylacrylate, -tert-butyl-acrylate, -n-hydroxyethyl methacrylate, -potassium acrylate, -pentabromobenzyl acrylate, -methyl methacrylate, -ethyl methacrylate, -n-nitrophenyl acrylate, -methyl 2-(acyloxymethyl)acrylate, -cyclohexyl acrylate, -n-ethylhexyl acrylate, and any derivative thereof,
- a surfactant, and
- a viscosifying agent.
Dependencies are inferred from the claim text.