Drainage or Filter Layer for Well Screen Assembly with Integrated Stand-off Structure
AssigneeDorstener Wire Tech
InventorsPatrick W. McGrenera, Douglas W. Weeks, Ruediger Tueshaus
Life of this patent
Estimating the term…
Abstract
An integral structure including woven wire cloth or non-woven metal filter medium for use as a drainage layer or filter layer in a well screen assembly is provided. A plurality of elongated members are welded on the woven metal cloth or non-woven metal filter medium to provide reduced resistance to flow parallel to a layer of the woven cloth. Segments of the woven or non-woven metal materials having elongated members joined thereto may be rolled into a cylinder to form a part of a well screen assembly.
Claims26
A structure for use in a well screen assembly, comprising:
- a woven metal cloth in a cylindrical shape;
- and
- elongated members attached to the woven metal cloth by welds.
A well screen assembly, comprising:
- a plurality of woven metal cloth segments formed into a cylinder, the segments being disposed so as to be joined or overlapping, at least one of the woven metal cloth segments having elongated members attached to the woven metal cloth by welds.
A structure for use in a well screen assembly, comprising:
- a non-woven metal filter medium in a cylindrical shape;
- and
- elongated members attached to the non-woven metal filter medium by welds.
A well screen assembly, comprising:
- a plurality of non-woven metal filter media segments formed into a cylinder, the segments being disposed so as to be joined or overlapping, at least one of the metal filter media segments having elongated members attached to the woven metal cloth by welds.
A well screen assembly, comprising:
- a plurality of segments of woven metal cloth having elongated members welded to at least one segment, the metal cloth of different segments having openings of different sizes, the segments being rolled into a cylinder such that metal cloth having openings of different sizes is radially disposed in the cylinder.
A well screen assembly, comprising:
- a plurality of segments of non-woven metal filter medium having elongated members welded to at least one segment, the non-woven metal filter medium of different segments having openings of different sizes, the segments being rolled into a cylinder such that metal filter media having openings of different sizes are radially disposed in the cylinder.
Dependencies are inferred from the claim text.