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.:
Date of Patent:
Jan. 21, 2025
Filed:
Jul. 01, 2021
Applicant:
Interwell P&a As, Hafrsfjord, NO;
Inventors:
Assignee:
INTERWELL P&A AS, Hafrsfjord, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/134 (2006.01); C06B 33/00 (2006.01); C06B 45/12 (2006.01); E21B 33/12 (2006.01); E21B 43/1185 (2006.01);
U.S. Cl.
CPC ...
E21B 33/134 (2013.01); C06B 33/00 (2013.01); C06B 45/12 (2013.01); E21B 33/1208 (2013.01); E21B 43/1185 (2013.01);
Abstract
This invention relates to a thermite reaction charge comprising bismuth oxide and aluminium adapted to react with a reaction rate giving a reaction time of 8 to 15 seconds for a thermite reaction charge of 30 to 100 kg from initialisation of the thermite reaction charge to at least 90% of the thermite reaction charge is reacted, a method for forming a three-phased rock-to-rock barrier by applying the thermite reaction charge and a well barrier formed thereof.