Pipeline intervention
AssigneeBP Corporation North America Inc.
InventorsBrandon Grant France, Rodney Keith Stephens
Life of this patent
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Abstract
An apparatus and method for accessing a sub sea pipeline. The apparatus comprises a entry guide (2) having a channel extending there-through for guiding a pipeline intervention device and means for attaching the entry guide to the external wall of a section of pipeline so that the longitudinal axis (b) through the centre of the channel of the entry guide forms an angle of between about 1° and 10° with the longitudinal axis (a) through the centre of the pipeline section.
Claims19
An apparatus for accessing a section of sub sea pipeline comprising an entry guide (1) having a channel extending there-through for guiding a pipeline intervention device and means (5) for attaching the entry guide (1) to the external wall of a section of pipeline (4) so that the longitudinal axis (b) through the centre of the channel of the entry guide (1) forms an angle of between about 1° and 10° with the longitudinal axis (a) through the centre of the pipeline section (4).
A method of accessing a pipeline section (4) including providing an entry guide (1) having a channel extending there-through for guiding a milling device, attaching the entry guide (1) to the external wall of a section of pipeline (4) such that the longitudinal axis (b) through the centre of the channel of the entry guide (1) forms and angle of between about 1° and 10° with the longitudinal axis (a) through the centre of the pipeline section (4), passing a milling device along the channel of the entry guide (1) towards the external wall of the pipeline section (4) and actuating the milling device to mill a window through the wall of the pipeline section (4).
Dependencies are inferred from the claim text.