Patent ID: 9127533
Filing Date: 2015-09-08
Classification: E21B

Abstract:
1. A completion assembly for running into a borehole in a formation, comprising: a casing string having a first end and a second end, and a drill pipe removably connected at a first end with the casing string at the first end of the casing string, wherein the casing string comprises: a plurality of tubular sections, at least two sections being annular barrier sections each comprising at least one annular barrier, the annular barriers being arranged at a predetermined mutual distance, each annular barrier comprising an expandable sleeve surrounding a tubular part, the tubular part forming part of the casing string and having an opening for entry of pressurised fluid to expand the sleeve, and a second closed end, and the assembly comprises a pressure creating device connected with a second end of the drill pipe, and configured to generate a casing fluid pressure within the drill pipe and within the casing string sufficient to expand each expandable sleeve, which casing fluid pressure is substantially greater than a formation fluid pressure in order to expand each expandable sleeve while in the borehole, after which the drill pipe is disconnected from the casing string.