Method and apparatus for completing a well for producing hydrocarbons or the like
AssigneeSchlumberger Technology Corporation
InventorBernard A. Montaron
Life of this patent
Estimating the term…
Abstract
The invention relates to an expandable liner for completing a hole in an underground formation, the liner being constituted by a spiral-wound strip with the longitudinal edges of the strip having complementary touching profiles so that after it has been expanded, the liner is circular in section. The invention also provides a method of completing a well finally or temporarily by installing a spiral-wound liner of the invention, expanding it, and optionally cementing it.
Claims9
A liner for completing a hole in an underground formation, the liner being constituted by a strip that, in a first position, is spiral-wound whereas its longitudinal edges form a certain angle relative to the axis of symmetry of said strip, and in a second expanded position, is circular in section and has its longitudinal edges defining a contact surface and having complementary touching profiles.
A liner for completing a hole in an underground formation, the liner being constituted by a spiral-wound strip, its longitudinal edges defining a contact surface having complementary touching profiles such that after expansion the liner is circular in section, characterised in that said contact surface is of general direction {right arrow over (D)} lying in a plane that forms a non-zero angle relative to the longitudinal axis of the liner.
Dependencies are inferred from the claim text.