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US 11,767,745 B2Granted
Use of energetic events and fluids to fracture near wellbore regions
AssigneeSchlumberger Technology Corporation
InventorsDean Willberg, Jeffrey Burghardt, Maxim Chertov
Life of this patent
Estimating the term…
Abstract
A method includes placing a fluid in a treatment zone of a wellbore, the fluid in fluid communication with a near wellbore region of a subterranean formation. At least one energetic event generating material is placed in the wellbore, and positioned adjacent and up hole from the fluid. An energetic event is generated from the at least one energetic event generating material, and at least one fracture is formed in the near wellbore region from the at least one energetic event applying a pressure pulse onto the fluid. In some aspects, the fluid is a viscous pill.
Claims18
A method, comprising:
- placing a viscous fluid pill in a treatment zone of a wellbore completed by a single tubular body, wherein the viscous fluid pill comprises polymeric fibers and is in fluid communication with a near wellbore region of a subterranean formation through at least one opening in a casing disposed in the wellbore;
- placing at least one energetic event generating material in the wellbore, wherein the at least one energetic event generating material comprises a fuel source and a reactive material, wherein the fuel source is delivered to the wellbore by a first control line or tubing inserted down hole within the single tubular body and the reactive material is delivered to the wellbore by a second control line or tubing inserted down hole within the single tubular body, wherein the at least one energetic event generating material is positioned up hole from the entirety of the viscous fluid pill;
- and
- generating at least one energetic event in the wellbore from the at least one energetic event generating material, thereby altering one or more rheological properties of a portion of the viscous fluid pill by increasing tangling between the polymeric fibers of the viscous fluid pill and forcing the viscous fluid pill into the near wellbore region through the at least one opening in the casing, and causing at least one hydraulic fracture to be formed in the near wellbore region from the at least one energetic event applying a pressure pulse onto the viscous fluid pill, wherein the portion of the viscous fluid pill improves a performance of the pressure pulse by suppressing development of viscous fingering produced by the at least one energetic event.
1 more element
A method, comprising:
- placing a viscous fluid pill in a treatment zone of a wellbore completed by a single tubular body, wherein the viscous fluid pill comprises polymeric fibers and is in fluid communication with a near wellbore region of a subterranean formation through at least one opening in a casing disposed in the wellbore;
- generating at least one energetic event from at least one energetic event generating material positioned inside the wellbore up hole from the entirety of the viscous fluid pill, wherein the at least one energetic event generating material comprises a fuel source and a reactive material, wherein the fuel source is delivered to the wellbore by a first control line or tubing inserted down hole within the single tubular body and the reactive material is delivered to the wellbore by a second control line or tubing inserted down hole within the single tubular body;
- and
- forming at least one substantially planar fracture in the near wellbore region from the at least one energetic event by applying a pressure pulse onto the viscous fluid pill and forcing the viscous fluid pill into the near wellbore region through the at least one opening in the casing;
- wherein the at least one energetic event alters one or more rheological properties of a portion of the viscous fluid pill by increasing tangling between the polymeric fibers of the viscous fluid pill, and wherein the portion of the viscous fluid pill improves a performance of the pressure pulse by suppressing development of viscous fingering produced by the at least one energetic event.
2 more elements
Dependencies are inferred from the claim text.