US 12,241,021 B2
Method for fracking of simulation of hydrocarbon bearing formation
Clay Purdy, Medicine Hat (CA); and Markus Weissenberger, Calgary (CA)
Assigned to DORF KETAL CHEMICALS FZE, Fujairah (AE)
Filed by Fluid Energy Group Ltd., Calgary (CA)
Filed on Dec. 22, 2022, as Appl. No. 18/145,590.
Application 18/145,590 is a continuation in part of application No. 17/054,439, filed on Nov. 10, 2020, granted, now 11,591,511.
Application 18/145,590 is a continuation in part of application No. 17/934,293, filed on Sep. 22, 2022.
Application 17/054,439 is a continuation of application No. 16/747,449, filed on Jan. 20, 2020, granted, now 11,485,902, issued on Nov. 1, 2022.
Application 16/747,449 is a continuation of application No. 16/408,202, filed on May 9, 2019, granted, now 11,168,246, issued on Nov. 9, 2021.
Claims priority of application No. CA 3004675 (CA), filed on May 11, 2018.
Prior Publication US 2023/0125900 A1, Apr. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 43/26 (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); C09K 8/74 (2006.01); C23F 11/04 (2006.01); E21B 21/00 (2006.01); E21B 41/02 (2006.01); E21B 43/119 (2006.01); E21B 43/27 (2006.01); E21B 43/28 (2006.01); E21B 33/12 (2006.01); E21B 43/116 (2006.01)
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)] 8 Claims
OG exemplary drawing
 
1. A method for the fracking or stimulation of a hydrocarbon bearing formation, said method comprising:
providing a wellbore having a casing;
inserting a plug in the wellbore at a predetermined location;
inserting a wireline, a perforating tool, a spacer, and an acidic composition into the wellbore, wherein said acidic composition includes a corrosion inhibiting composition comprising a terpene, an amphoteric surfactant, and a solvent, wherein said acidic composition is in direct contact with said wireline and casing but separated from said perforating tool by said spacer;
wherein said acidic composition further includes a corrosion inhibiting composition comprising at least two compounds selected from: Group A; Group B; where the at least two compounds are selected from different groups and where:
Group A comprises compounds including: α, β-unsaturated aldehyde; formaldehyde; cinnamaldehyde;
Group B comprises compounds including: acetylenic compound; unsaturated alcohol; acetylenic alcohol; alkoxylated acetylenic alcohol; alkoxy phenols; diacetylenic alcohols;
positioning the perforating tool within the acidic composition near said predetermined location;
perforating the wellbore with the perforating tool thereby creating a perforated area and acid soluble debris;
placing the acidic composition in contact with the perforated area and acid soluble debris for a predetermined period of time to prepare the hydrocarbon bearing formation for stimulation;
removing the perforating tool from the wellbore; and
initiating the fracking or stimulation of the perforated area using a stimulation fluid.