Composition Including Viscosifier Polymer And Polyamine Viscosity Modifier For Treatment Of Subterranean Formations
AssigneeHalliburton Energy Services, Inc.
InventorsKay Ann Galindo, Weibin Zha, Jay Paul Deville, Hui Zhou
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Abstract
Various embodiments disclosed relate to compositions including a viscosifier polymer and a polyamine viscosity modifier and methods of using the same for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation. The method includes placing in a subterranean formation a composition including a viscosifier polymer and a polyamine viscosity modifier.
Claims6
A composition for treatment of a subterranean formation, the composition comprising:
- a viscosifier polymer comprising
- an ethylene repeating unit comprising an —NRa—C(O)—Rb group, wherein at each occurrence Ra and Rb are each independently selected from —H and substituted or unsubstituted (C1-C20)hydrocarbyl or Ra and Rb together form a substituted or unsubstituted (C2-C20)hydrocarbylene,
- an ethylene repeating unit comprising an —S(O)2OR1 group wherein at each occurrence R1 is independently selected from —H, substituted or unsubstituted (C1-C20)hydrocarbyl, and a counterion,
- at least one crosslinker repeating unit comprising an ethylene repeating unit at each occurrence independently linked to an ethylene repeating unit in the same viscosifier polymer molecule or in another molecule of the viscosifier polymer via a substituted or unsubstituted (C1-C40)hydrocarbylene interrupted by 0, 1, 2, or 3 groups independently chosen from —O—, —S—, and substituted or unsubstituted —NH—,
- wherein the repeating units are in block, alternate, or random configuration;
- and
- a polyamine viscosity modifier.
A composition for treatment of a subterranean formation, the composition comprising:
- a viscosifier polymer comprising repeating units having the structure:
- wherein
- the repeating units are in a block, alternate, or random configuration, and each repeating unit is independently in the orientation shown or in the opposite orientation,
- at each occurrence R1 is independently selected from —H, substituted or unsubstituted (C1-C20)hydrocarbyl, and a counterion,
- at each occurrence M is independently an ethylene repeating unit of the same viscosifier polymer molecule or an ethylene repeating unit of another molecule of the viscosifier polymer, and
- the viscosifier polymer has about 50 mol % to about 98 mol % of the repeating unit comprising the —S(O)2OR1, about 1 mol % to about 40 mol % of the repeating unit comprising the 2-pyrrolidon-1-yl group, about 0.1 mol % to about 15 mol % of the repeating unit comprising the bisacrylamide linker, and about 0.1 mol % to about 15 mol % of the repeating unit comprising the —CH2—O—CH2—C(—CH2—OCH2M)3 group;
- and
- at least one of poly(diallyldimethylammonium chloride) and polyacrylamide.
Dependencies are inferred from the claim text.