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

Claim 5:
6. The method of claim 1, wherein the method is a method for pressure protection of an existing wellbore that has previously been fractured in proximity to a new wellbore to be fractured, the method comprising:
injecting an aqueous pressure protection composition into the existing wellbore in fluid communication with an unconventional subterranean formation prior to, during, or prior to and during fracturing of the new wellbore in fluid communication with the unconventional subterranean formation;
wherein the existing wellbore has an existing reservoir pressure that is less than original reservoir pressure;
wherein the aqueous pressure protection composition is injected at a pressure and flowrate effective to increase the existing wellbore pressure without refracturing the existing wellbore;
wherein the aqueous pressure 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 a surfactant package comprising a primary surfactant; and
wherein the aqueous pressure protection composition comprises an alkoxylated C6-C16 alcohol and a disulfonate.