Morphable Apparatus

摘要

Apparatus and method for securing and sealing a tubular portion to another tubular to provide a liner hanger in oil and gas wells. At the top of the liner string, a sleeve is arranged on the liner to create a chamber therebetween. A port provides fluid access through the liner to the chamber. When fluid is introduced into the chamber the sleeve is morphed to secure it to the cemented casing. A lower fluid pressure is required to morph the sleeve than if the liner itself was to be morphed. Embodiments are provided for securing and sealing arrangements to increase the metal to metal seal and the load capability between the liner string and casing.

主权项

1. A tubular portion apparatus to be secured and sealed to an existing tubular in a wellbore, the tubular portion comprising:
a base pipe to be run into and sealed against the existing tubular, the base pipe having an upper end and a lower end; the base pipe being characterised in that: at the upper end of the base pipe there is a sleeve member positioned around an exterior of the base pipe; first and second connectors are arranged at each end of the sleeve member to seal the sleeve member to the exterior of the base pipe and create a chamber therebetween; a port having a valve to permit the flow of fluid into the chamber is provided through the base pipe in order to increase pressure within the chamber to cause the sleeve member to move outwardly and morph against an inner surface of the existing tubular.