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1. (WO2017199037) TOOL FOR SEVERING A DOWNHOLE TUBULAR BY A STREAM OF COMBUSTION PRODUCTS

Pub. No.:    WO/2017/199037    International Application No.:    PCT/GB2017/051390
Publication Date: Fri Nov 24 00:59:59 CET 2017 International Filing Date: Fri May 19 01:59:59 CEST 2017
IPC: E21B 29/02
Applicants: SPEX CORPORATE HOLDINGS LTD
Inventors: JOHNSTON, Sidney Dantuma
Title: TOOL FOR SEVERING A DOWNHOLE TUBULAR BY A STREAM OF COMBUSTION PRODUCTS
Abstract:
A tool for manipulating a tubular in a downhole environment is described. The tool comprises a housing defining a chamber, the chamber having at least one outlet, a propellant source located within the chamber an ignition mechanism for igniting the propellant source; and a control mechanism. Upon ignition of the propellant source, the propellant source is operable to deflagrate, creating at least one stream of combustion products, the chamber directing the/each stream of combustion products through the/each outlet, towards the tubular to be manipulated, at least one parameter of the/each stream of combustion products being changeable by the control mechanism.