초록 ▼

Well screen assembly for use in horizontal wells and other situations where tensile, torsion and bending forces can damage well screens which are welded to their end supports provides a floating mounting which eliminates welding of the screen segments. A pair of complementary inner and outer slip ri

Well screen assembly for use in horizontal wells and other situations where tensile, torsion and bending forces can damage well screens which are welded to their end supports provides a floating mounting which eliminates welding of the screen segments. A pair of complementary inner and outer slip rings are provided at one end of the well screen assembly with the inner ring being in sealed relationship with a screen segment and the outer ring being integrally affixed to an outer protective cover member and an axial support member such as a pipe base member or a tubular end fitting. The inner ring is free to slide and rotate relative to the outer ring.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [7.] A well screen assembly comprising at least one cylindrical well screen portion having longitudinal support rods and a spiral wrapped wire overlying said rods and being welded there

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [7.] A well screen assembly comprising at least one cylindrical well screen portion having longitudinal support rods and a spiral wrapped wire overlying said rods and being welded thereto to define an open slot area of said well screen portion, a generally cylindrical protective cover member overlying said at least one cylindrical well screen portion and having fluid inlet openings along at least a portion of its length, said generally cylindrical protective cover member being integrally attached at each of its ends to an outer ring member; said outer ring member at one of the ends of said protective cover member having a longitudinally extending cylindrical inner surface portion which closely overlies a complementary elongated cylindrical outer surface portion of an inner slip ring member which has an elongated cylindrical inner surface in surrounding sealing engagement with a plurality of wraps of wire forming one end of said at least one cylindrical well screen portion, said outer and inner ring members at said one of the ends of said protective cover member each having generally radially extending wall portions; said one end of said at least one cylindrical well screen portion and said inner slip ring member being free to slide and rotate relative to said outer ring member which is at said one of the ends of said protective cover member but being limited in their ability to move axially relative to said generally cylindrical protective cover member and said outer ring member by the said radially extending wall portion of said outer ring member.