| 摘要 |
A tool 10 for manipulating a tubular 12, such as casing or production tubing, in a downhole environment, includes a housing 20 defining a chamber 22, the chamber 22 having at least one outlet 24, a propellant source 26 located within the chamber 22 and an ignition mechanism for igniting the propellant source 26. Upon ignition of the propellant source 26, the propellant deflagrates, creating at least one stream of combustion products 44, the chamber 22 directing the stream of combustion products through the/each outlet 24, towards the tubular 12 to be manipulated, the/each stream of combustion products combining with at least one modifying agent 28 to manipulate the tubular. Multiple propellants may be present and a deflector 39 may alter the path of the combustion products 44. The modifying agent 28 may be aluminium oxide. |
