Abstract: A method to provide support within a wellbore includes underreaming a section of the wellbore at a depth spanning a layer of an unstable formation. The method also includes deploying a bistable structure within the wellbore at the depth of the layer of the unstable formation. Additionally, the method includes actuating an expandable packer within the bistable structure to expand the bistable structure in a radially outward direction from a longitudinal axis of the bistable structure. The bistable structure is in contact with walls of the underreamed section of the wellbore upon expanding in the radially outward direction.

Abstract: A method to provide support within a wellbore includes underreaming a section of the wellbore at a depth spanning a layer of an unstable formation. The method also includes deploying a bistable structure within the wellbore at the depth of the layer of the unstable formation. Additionally, the method includes actuating an expandable packer within the bistable structure to expand the bistable structure in a radially outward direction from a longitudinal axis of the bistable structure. The bistable structure is in contact with walls of the underreamed section of the wellbore upon expanding in the radially outward direction.

Abstract: A downhole completion assembly for sealing and supporting an open hole section of a wellbore includes a sealing structure movable between contracted and expanded configurations, a truss structure also movable between contracted and expanded configurations, wherein, when in their respective contracted configurations, the sealing and truss structures are each able to axially traverse production tubing extended within a wellbore, a conveyance device operably coupled to the sealing and truss structures and configured to transport the sealing and truss structures in their respective contracted configurations through the production tubing and to an open hole section of the wellbore, and a deployment device operably connected to the sealing and truss structures and configured to radially expand the sealing and truss structures from their respective contracted configurations to their respective expanded configurations.

Abstract: Disclosed is a downhole completion assembly for sealing and supporting an open hole section of a wellbore and filtering fluids passing therethrough. One system includes a sealing structure arranged within the open hole section and being movable between a contracted configuration and an expanded configuration, the sealing structure having one or more perforations defined therein, and a filter device arranged about the sealing structure so as to radially overlap the one or more perforations, the filter device being configured to screen fluids passing through the one or more perforations.

Abstract: A downhole completion assembly for sealing and supporting an open hole section of a wellbore includes a sealing structure movable between a contracted configuration and an expanded configuration, wherein, when in the contracted configuration, the sealing structure is able to axially traverse production tubing extended within a wellbore. A conveyance device is coupled to the sealing structure and configured to transport the sealing structure through the production tubing and to an open hole section of the wellbore. A deployment device is operably connected to the sealing structure and configured to radially expand the sealing structure from the contracted configuration to the expanded configuration when the sealing structure is arranged in the open hole section.

Abstract: A downhole completion assembly for sealing and supporting an open hole section of a wellbore includes a first sealing structure having opposing first and second ends and being arranged within an open hole section of a wellbore, the first sealing structure being movable between a contracted configuration and an expanded configuration. A second sealing structure has opposing first and second ends and is arranged proximate the first sealing structure within the wellbore, the second sealing structure also being movable between a contracted configuration and an expanded configuration. When in their respective expanded configurations, the first and second sealing structures are frustoconical in shape and the first end of the second sealing structure is at least partially nested within the second end of the first sealing structure.

Abstract: An example downhole completion system includes a first sealing structure arranged within an open hole section of a wellbore and being movable between a contracted configuration and an expanded configuration, a second sealing structure arranged axially adjacent the first sealing structure and also being movable between a contracted configuration and an expanded configuration, and a flow control device arranged between the first and second sealing structures and configured to provide a flow path for fluids to communicate between a surrounding subterranean formation and an interior of the downhole completion system.

Abstract: Disclosed is a downhole completion assembly for sealing and supporting an open hole section of a wellbore and providing flow control through the downhole completion assembly. One downhole completion system includes a first sealing structure arranged within an open hole section of a wellbore and being movable between a contracted configuration and an expanded configuration, a second sealing structure arranged axially adjacent the first sealing structure and also being movable between a contracted configuration and an expanded configuration, and a flow control device arranged between the first and second sealing structures and configured to provide a flow path for fluids to communicate between a surrounding subterranean formation and an interior of the downhole completion system.

Abstract: Disclosed is a downhole completion assembly for sealing and supporting an open hole section of a wellbore and providing flow control through the downhole completion assembly. One downhole completion system includes a first sealing structure arranged within an open hole section of a wellbore and being movable between a contracted configuration and an expanded configuration, a second sealing structure arranged axially adjacent the first sealing structure and also being movable between a contracted configuration and an expanded configuration, and a flow control device arranged between the first and second sealing structures and configured to provide a flow path for fluids to communicate between a surrounding subterranean formation and an interior of the downhole completion system.

Abstract: Fabrication of metal medical instruments and devices from a shape memory alloy which provides greater flexibility in design and avoids the need for substantial cold working of the alloy which is required in other methods. The new process provides a ductile alloy for ease of forming and a unique heat treatment which renders the fabricated orthodontic and medical components highly elastic, with a high resistance to kinking and with good corrosion resistance. In addition, this new process produces orthodontic and medical components useful over the temperature range of from −20 to +40 degrees C.

Abstract: Method for fixing two elements together, in particular links (1) of a metal wristwatch strap, according to which a metal pin (2) made of a moulding memory alloy with large hysteresis--programmed such that it turns from the martensitic structure to the austenitic structure in a first temperature range which is situated above the service temperature of the elements and whereby its thickness increases, and such that it turns back from the austenitic structure to the martensitic structure in a second temperature range which is situated under the above-mentioned service temperature--is clamped in the martensitic structure in at least one either or not blind hole (3) in at least one of the elements to be linked; the pin (2) is subsequently heated to a temperature higher than the first temperature range, such that the thickness of the pin (2) is increased, whereby the clamping force of the pin (2) in the hole (3) becomes very large; and the pin (2) is finally cooled down to service temperature, characterized in that