Geothermal liner system with packer
OwnerDavid R. Van De Vliertinventor
Life of this patent
Estimating the term…
Abstract
A geothermal liner system with packer for sealing a producing zone within a wellbore has a mandrel placed in an interior of the wellbore, a packer releasably affixed around an outer surface of the mandrel, and a sleeve positioned adjacent an end of the mandrel. The liner system is generally tubular and may include joint casings and a mandrel, all being tubular-shaped. The packer is expandable upon exposure to wellbore conditions. The sleeve has perforations in a wall thereof. The mandrel is slidable relative to the packer when the packer expands against the wellbore. The sleeve is selectively controlled to manage production from sealed wellbore zones. The system is stabilized through various wellbore conditions, such as geothermal heat, by being adjustable for thermal expansion of parts of the system.
Claims18
A liner system for sealing a producing zone within a wellbore comprising:
- a mandrel placed in an interior of the wellbore, said mandrel having a tubular shape;
- a packer releasably affixed around an outer surface of said mandrel, said packer being comprised of a material expandable upon exposure to wellbore conditions, said mandrel being slidable longitudinally within an interior of said packer when said packer is in an expanded state and set in the wellbore;
- and
- a sleeve positioned adjacent an end of said mandrel, said sleeve having a plurality of perforations in a wall thereof,
- wherein said sleeve has an inner diameter smaller than an outer diameter of said mandrel, said plurality of perforations being selectively positioned in and out of fluid communication with an interior of the liner system.
A liner system for sealing a producing zone within a wellbore comprising:
- a mandrel placed in an interior of the wellbore, said mandrel having a tubular shape;
- and
- a packer releasably affixed around an outer surface of said mandrel, said packer being comprised of a material expandable upon exposure to wellbore conditions, said packer comprising:
- a packing structure having a channel therein;
- a packer element received in said channel of said packing structure, said packer element being expandable in an annular space between said packing structure and the wellbore upon exposure to wellbore conditions;
- and
- a fusible link connected to said packing structure, said fusible link being releasably affixed said outer surface of said mandrel, said mandrel being slidable within an interior of said packer when said fusible link is released, said packing structure being slidable relative to said outer surface of said mandrel when said fusible link is released, said packer being slidable relative to said outer surface of said mandrel when said fusible link is released.
A liner system for sealing a producing zone within a wellbore comprising:
- a first packing assembly having a mandrel and a packer, said packer of said first packing assembly being releasably affixed to said mandrel of said first packing assembly;
- a sleeve having an end positioned adjacent an end of said mandrel of said first packing assembly, said sleeve having a plurality of perforations in a wall thereof;
- a second packing assembly having a mandrel and a packer, said packer of said second packing assembly being releasably affixed to said mandrel of said second packing assembly, said mandrel of said second packing assembly having and end positioned adjacent an opposite end of said sleeve, the mandrels of the first and second packing assemblies being slidable relative to respective packing assemblies, when the first and second packer assemblies are in expanded states and set in the wellbore,
- wherein said plurality of perforations of said sleeve are selectively positioned in and out of fluid communication with an interior of the liner system through an interior of said mandrel of said first packing assembly and an interior of said mandrel of said second packing assembly.
Dependencies are inferred from the claim text.