Introduction of tube forming material into a well through pressure control system

摘要

A method of providing a flow conduit 28 in a pressurised well 12 comprises providing a supply of material for forming the conduit outside the well. The material is introduced into the well through a pressure control system, such as a dynamic seal 26 that allows the material to be fed progressively into the well while it is maintained at pressure. The material is formed into a tube in the well to define the flow conduit. A tube forming machine 16 may be used to achieve this. The material may be provided outside the well in the form of an elongate strip 24 stored on a reel 22.