Thermal apparatus and associated methods
AssigneeClearwell Technology Ltd
InventorsBruce Cardno, Paul Ray
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Abstract
Embodiments comprise a method of removing material at a well, involving progressively jetting heat along a helical path to heat a target material for removal. Embodiments of the method comprise material removal from a downhole well element, involving running in a downhole assembly with a downhole heating device comprising a fuel towards a target location. For example, such embodiments provide an alternative method for the removal of wellbore tubulars, using a rapid oxidation process to significantly alter the physical state of the tubular well element and reduce it to an oxide deviate, thereby facilitating an area where a more conventional barrier can be installed in the wellbore.
Claims18
A well material removal apparatus for removing material at a well, the well material removal apparatus comprising a heating device for heating a target material, the heating device being a helical thermic lance configured to progressively jet heat along a helical path to heat the target material for removal, wherein the helical thermal lance is configured to jet heat laterally relative to a longitudinal axis of the heating device, the longitudinal axis being a central longitudinal axis along which the helix of the helical thermic lance extends.
A method of removing material at a well, the method comprising progressively jetting heat along a helical path with a helical thermic lance configured to jet heat laterally relative to a central longitudinal axis along which a helical of the helical thermic lance extends to heat a target material for removal, wherein the helical thermic lance is configured to progressively jet the heat along a helical path such that heat is jetted laterally relative to a longitudinal axis of the well to progressively helically heat the target material.
A well material removal apparatus for removing material at a well, the well material removal apparatus comprising a heating device for heating a target material, the heating device being a helical thermic lance for progressively jetting heat along a helical path, the helical thermic lance being configured to jet heat laterally relative to a longitudinal axis of the well to progressively helically heat the target material for removal.
Dependencies are inferred from the claim text.