Patent ID: 8091573
Filing Date: 2012-01-10
Classification: F16L,G01M,Y10T

Abstract:
1. A method of accessing a pipeline section comprising: providing an entry guide having a channel extending therethrough for guiding a milling device, attaching the entry guide to an external wall of a section of pipeline such 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, passing a milling device along the channel of the entry guide towards the external wall of the pipeline section, actuating the milling device to mill a window through the wall of the pipeline section, withdrawing the milling device from the channel of the entry guide, and then passing another intervention device through the channel of the entry guide, through the window formed by the milling device and into the pipeline for conducting an intervention within the pipeline, the intervention device being a tool carried on coiled tubing.