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US 2020/0048535 A1Published application
Fracturing fluid comprising a (co)polymer of a hydrated crystalline form of 2-acrylamido-2-methylpropane sulphonic acid and hydraulic fracturing method
AssigneeS.P.C.M. SA
InventorsCédrick FAVERO, Johann KIEFFER
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Abstract
The present invention relates to a fracturation fluid comprising at least one propping agent and at least one water-soluble (co)polymer prepared from the hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid and/or at least one of its salts. The invention relates to a process to prepare said fluid, and to a hydraulic fracturation process using said fluid.
Claims20
A fracturation fluid comprising at least one propping agent and at least one water-soluble (co)polymer prepared from a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid and/or of at least one of its salts;
- wherein the hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid has a 2-theta powder X-ray diffraction diagram comprising peaks at 10.58°, 11.2°, 12.65°, 13.66°, 16.28°, 18.45°, 20°, 20.4°, 22.5°, 25.5°, 25.88°, 26.47°, 28.52°, 30.28°, 30.8°, 34.09°, 38.19°, 40.69°, 41.82°, 43.74°, and 46.04° degrees.
Dependencies are inferred from the claim text.