| 摘要 |
<p>APPARATUS FOR CHEMICAL CUTTING A method and apparatus for cutting tubing suspended in a borehole. An elongated tubular assembly is provided for suspension in and securement within a wellbore for the chemical cutting of the tubing therein through the discharge of high velocity streams of a highly reactive, incendiary chemical fluid. The apparatus includes the storage of a halogen flouride, or the like, disposed within a chemical module intermediately disposed of propellant and slip assembly modules and a discharge head assembly. The propellant module is constructed with a chamber containing active burning ignition powder for igniting a slow burning propellant for the generation of gas to pressurize the chamber and cause a linear actuation of the slip assembly responsive thereto for the deployment of a cylindrically segmented slip array to securely engage the adjacent tubing and anchor the apparatus therein. The generation of the pressurizing gas also imparts a movement of the incendiary fluid through a catalyst chamber for causing the fluid to react and discharge through the discharge head assembly for the cutting of the adjacent tubing. The slip assembly is constructed with a dual taper, gripping teeth configuration for matingly engaging two discrete tubing diameters, therein facilitating interchangeable use within conduit of different sizes. The assembly also includes a pair of rupture diaphragms enclosing the incendiary fluid, which rupture to a substantially full flow opening at a preselected breakthrough pressure to facilitate effective and safe operation of the present invention.</p> |
