The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12180423 B1

Date of Patent:

Dec. 31, 2024

Filed:

Sep. 22, 2022

Methods for stimulating hydrocarbon-bearing formations

Applicant:

Fluid Energy Group Ltd., Calgary, CA;

Inventors:

Clay Purdy, Medicine Hat, CA;

Markus Weissenberger, Calgary, CA;

Assignee:

DORF KETAL CHEMICALS FZE, Fujairah, AE;

Attorney:

Primary Examiner:

William D Hutton, Jr

Assistant Examiner:

Avi T Skaist

Int. Cl.

CPC ...

C09K 8/74 (2006.01); C09K 8/03 (2006.01); C09K 8/06 (2006.01); C09K 8/42 (2006.01); C09K 8/46 (2006.01); C09K 8/54 (2006.01); C09K 8/60 (2006.01); C23F 11/04 (2006.01); E21B 21/00 (2006.01); E21B 41/02 (2006.01); E21B 43/119 (2006.01); E21B 43/26 (2006.01); E21B 43/27 (2006.01); E21B 43/28 (2006.01); E21B 33/12 (2006.01); E21B 43/116 (2006.01);

U.S. Cl.

CPC ...

C09K 8/74 (2013.01); C09K 8/032 (2013.01); C09K 8/06 (2013.01); C09K 8/426 (2013.01); C09K 8/46 (2013.01); C09K 8/54 (2013.01); C09K 8/602 (2013.01); C23F 11/04 (2013.01); E21B 21/00 (2013.01); E21B 41/02 (2013.01); E21B 43/119 (2013.01); E21B 43/26 (2013.01); E21B 43/27 (2020.05); E21B 43/283 (2013.01); C09K 2208/32 (2013.01); E21B 33/12 (2013.01); E21B 43/116 (2013.01);

Abstract

A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: providing a wellbore in need of stimulation; inserting a plug in the wellbore at a predetermined location; inserting a perforating tool and a spearhead or breakdown acid into the wellbore; positioning the tool at said predetermined location; perforating the wellbore with the tool thereby creating a perforated area; allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for fracking or stimulation; removing the tool from the wellbore; and initiating the fracking of the perforated area using a fracking fluid. Also disclosed is a corrosion inhibiting composition for use with the acid composition.

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