E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/04 (2006.01)
Patent
CA 2420050
A method and well tool for using a low-viscosity slurry to gravel pack a completion interval. The well tool is comprised of a screen and at least one alternate flowpath which is initially closed to flow by a valve means. Once a sand bridge is formed in the completion interval, the pressure of the pumped slurry increases which, in turn, opens the valve means to allow flow through the alternate flowpath. Preferably, a plurality of flowpaths of different lengths are provided, all of which include valve means which are adapted to open at different pressures.
L'invention concerne un outil et un procédé dans lesquels on utilise une boue à faible viscosité pour le gravillonnage d'un intervalle de complétion. L'outil comprend un tamis et au moins un circuit d'écoulement alternatif initialement fermé par une vanne. Lorsqu'un pont de sable est formé dans l'intervalle de completion, la pression de la boue pompée augmente, ouvrant ainsi la vanne afin de permettre au flux de s'écouler le long du circuit d'écoulement alternatif. L'outil comprend, de préférence, plusieurs circuits d'écoulement de différentes longueurs tous équipés de vannes adaptées pour s'ouvrir à différentes pressions.
Borden Ladner Gervais Llp
Exxonmobil Oil Corporation
LandOfFree
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