Centralizing and protective adapter for downhole torch and method of use

US10392888B2 · kind B2 · utility

Assignee

• Robertson Intellectual Properties, LLC · US

Inventors

• Michael C. Robertson · Somers, US
• Antony F. Grattan · Mansfield, US
• Douglas J. Streibich · Fort Worth, US
• Amy C. Stephens · Mansfield, US
• William F. Boelte · New Iberia, US
• Cory L. Huggins · Mansfield, US

Key dates

• Filing date: Aug 29, 2016
• Grant date: Aug 27, 2019
• Expiry date: Feb 5, 2037

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B29/02
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

Apparatus and adapter are usable for aligning downhole torch apparatuses and cutting devices, including axial pyro torches, circulating pyro torches, and radial cutting and perforating torches, within a wellbore for removal of one or more downhole obstructions. The torch and/or cutting apparatus comprises a body having a nozzle adapted to project a fuel load, such as molten thermite or molten thermite with a polymer, in a direction aligned with the obstruction. The adapter comprises protruding elements for eliminating or diminishing damage to the area surrounding the obstruction, including the inner walls of the wellbore and/or casing, and can further comprise centralizers for alignment of the apparatus with the obstruction, within the wellbore.