E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/04 (2006.01) E02F 5/18 (2006.01) F16L 1/028 (2006.01)
Patent
CA 2513867
A pipeline installation and maintenance method and system is disclosed in which a number of interconnectible platform modules are assembled into drilling platforms from which a segmented pipeline route is flexibly installed. Using modified push/pull rigs to carry out a transverse drilling process established between platforms, successive portions of the pipeline are installed such that equipment used to create completed segments is moved down line and re-used in subsequent drilling and installation stages. Further segments of the line are similarly constructed, using one or more of the modified directional drilling techniques and transverse reaming processes disclosed herein. Ultimately, a long series of adjacent pipeline segments are installed along a desired pipeline route, while only minimal and temporary disturbance is caused to associated ground surfaces during installation and maintenance operations.
L'invention concerne un procédé et un système pour l'installation et la maintenance de pipeline : plusieurs modules de plate-forme pouvant être reliés sont assemblés en plates-formes de forage à partir de laquelle on installe un trajet de pipeline segmenté de façon flexible. On utilise des installations de forage modifiées de type = push/pull = pour le forage transversal, entre plates-formes, et on installe des parties successives du pipeline de sorte que l'équipement utilisé pour réaliser des segments entiers soit acheminé vers l'aval et réutilisé dans les étapes ultérieures de forage et d'installation. D'autres segments de pipeline sont réalisés de façon similaire, par le biais d'une ou plusieurs techniques de forage directionnel modifié et de forage transversal décrites dans l'invention. En définitive, on installe une longue série de segments de pipeline adjacents le long d'un trajet désiré, en causant seulement des perturbations minimes et temporaires aux surfaces au sol associées durant l'installation et la maintenance.
Kadaster Ali G.
Millheim Keith
Anadarko Petroleum Corporation
Fetherstonhaugh & Co.
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