Patent ID: 8157007
Filing Date: 2012-04-17
Classification: E21B

Abstract:
1. A method for lining a well or a duct having a wall with an inflatable bladder with a flexible and elastic membrane, comprising: introducing a length of cylindrical tube into the well or the duct to be lined, the tube having sections which are attached end-to-end; and radially expanding areas of the tube with an inflatable bladder so a wall of the tube bears against the wall of the well or the duct; at least partially deflating the inflatable bladder; and displacing the at least partially deflated bladder from an expanded zone to a next zone to be expanded by pulling or pushing the manoeuvring and control rod; wherein the tube is provided with at least one sensor placed against the external surface of the tube inside a wall recess which is intended to be only partly expanded.