Patent ID: 11959019
Assignee: HRB STIMULATION, LLC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for stimulating a subterranean formation, comprising:
introducing a first volume of a non-aqueous liquid into the subterranean formation penetrated by a wellbore;
introducing a treatment fluid comprising anhydrous liquid ammonia into the subterranean formation;
introducing a second volume of a non-aqueous liquid into the subterranean formation, wherein the anhydrous liquid ammonia is sandwiched between the first volume of non-aqueous liquid and the second volume of non-aqueous liquid, thereby forming a pill; and
introducing a volume of push-fluid to push the pill into the subterranean formation and allow the anhydrous liquid ammonia to react with water in the subterranean formation to increase pressure and form microfractures, wherein the first and second volumes of non-aqueous liquid, the treatment fluid, and the push-fluid are introduced into the subterranean formation at an injection pressure and substantially below hydraulic fracturing pressure.