Patent ID: 11939524
Assignee: CHEVRON U.S.A. INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 0:
1. A method for improving hydrocarbon production from an unconventional subterranean formation, the method comprising:
injecting an aqueous pressure protection composition into the unconventional subterranean formation via an existing wellbore in fluid communication with a rock matrix of the unconventional subterranean formation prior to, during, or prior to and during injection of a fracturing fluid into the unconventional subterranean formation via a new wellbore in fluid communication with the rock matrix of the unconventional subterranean formation,
wherein the rock matrix of the unconventional subterranean formation in proximity to the existing wellbore is previously fractured; and
wherein the aqueous protection composition in the existing wellbore biases fracture formation away from the previously fractured rock matrix in proximity to the existing wellbore and towards virgin rock proximate to the new wellbore; and
wherein the aqueous pressure protection composition comprises an aqueous solution comprising a surfactant package, an acid, an alkali agent, a co-solvent, a viscosity-modifying polymer, or any combination thereof; and
wherein the aqueous pressure protection composition comprises an alkoxylated C6-C16 alcohol and a disulfonate.