Prepacked flush joint well screen
AssigneeAmeron International Corporation
InventorRussell P. Johnson
Life of this patent
Estimating the term…
Abstract
A pre-packed well screen has concentric inner and outer fiber reinforced composite tubes with a granular filter medium in the annulus between the inner and outer tubes. The walls of the tubes are slotted for passing fluid through the slots and the filter medium. Each end of the inner tube extends beyond the adjacent end of the outer tube and has a male thread. A connection is made to an adjacent well screen or other tube by a female coupling member threaded onto the male thread. An advantage of the design is that the coupling member connected to the inner tube has an outside diameter approximately the same as the outside diameter of the outer tube.
Claims18
A prepacked well screen comprising:
- an outer fiber reinforced composite tube;
- an inner fiber reinforced composite tube concentric with the outer tube and having at least one end extending beyond an end of the outer tube;
- a filter medium in an annulus between the tubes;
- a plurality of perforations through the walls of the inner and outer tubes for passing fluid through the tubes and the filter medium;
- a male thread formed on at least the extending end of the inner tube;
- and
- a female coupling member connected to the male thread having an outside diameter not significantly larger than the outside diameter of the outer tube.
A prepacked well screen comprising:
- inner and outer concentric glass fiber reinforced composite tubes, the inner tube extending longitudinally out of at least one end of the outer tube;
- means for closing an annulus between the inner and outer tubes adjacent to each end;
- a filter medium in the annulus between the inner and outer tubes;
- a plurality of slots through the walls of the inner and outer tubes for passing fluid through the slots and the filter medium;
- a male thread on the end of the inner tube that extends out of the outer tube;
- and
- a female coupling member threaded onto the male thread, the coupling member having an outside diameter approximately the same as the outside diameter of the outer tube.
A prepacked well screen comprising:
- inner and outer concentric glass fiber reinforced composite tubes, the inner tube extending longitudinally out of at least one end of the outer tube;
- means for closing an annulus between the inner and outer tubes adjacent to each end;
- a sand filter medium in the annulus between the inner and outer tubes;
- a plurality of slots through the walls of the inner and outer tubes for passing fluid through the slots and the filter medium, the slots extending longitudinally along each inner and outer tube;
- a male thread on the end of the inner tube that extends out of the outer tube;
- and
- a female coupling member threaded onto the male thread, the coupling member having an outside diameter approximately the same as the outside diameter of the outer tube.
Dependencies are inferred from the claim text.