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US 8,673,826 B2Granted
Dry blend fracturing fluid additives
AssigneeSchlumberger Technology Corporation
InventorsMarie Noelle Dessinges, Jean-Louis Pessin
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Abstract
A method and composition for crosslinking a polymer based fluid includes providing a dry blend of crosslinker and delay agent. The crosslinker and delay agent are mixed and granulated in a dry form prior to addition to the polymer fluid.
Claims12
A polymer fluid with delayed crosslinking, comprising:
- a hydratable polymer that has at least partially hydrated, and a dry, particulate blend comprising:
- a crosslinker;
- and
- a delay agent selected from the group consisting of polyols, sodium gluconate, sorbitol, and combinations thereof;
- wherein the dry particulate blend contains no crosslinkable polymer.
2 more elements
A method of forming a fluid comprising a fluid additive having utility for addition to a polymer fluid for delayed crosslinking, comprising:
- providing a fluid comprising a hydratable polymer that has at least partially hydrated;
- providing a fluid additive comprising:
- a particulate crosslinker;
- and
- a particulate delay agent selected from the group consisting of polyols, sodium gluconate, sorbitol, and combinations thereof;
- wherein the dry crosslinker and the dry component are single compound granules.
3 more elements
Dependencies are inferred from the claim text.