Casing centralizer and method of manufacturing same

摘要

A casing centralizer and method according to which a body covers at least a portion of a frame. In an exemplary embodiment, the body is overmolded around the frame. In an exemplary embodiment, the casing centralizer centralizes a casing within a wellbore to facilitate oil and gas exploration and production operations.

主权项

1. A casing centralizer, comprising:
a frame, comprising:
a first tubular member defining inside and outside surfaces;a second tubular member spaced axially from the first tubular member, the second tubular member defining inside and outside surfaces; anda plurality of circumferentially-spaced ribs,
wherein each rib comprises a base portion and a distal end portion that is radially offset from the base portion,wherein each of the respective base portions of the ribs is connected to each of the first and second tubular members, and wherein the ribs extend between the first and second tubular members; and a body, comprising:
a first portion that covers the respective distal end portions of the ribs so that the respective distal end portions are disposed radially between the first portion of the body and the first tubular member; anda second portion that covers the respective inside surfaces of the first and second tubular members so that the respective inside surfaces of the first and second tubular members are disposed radially between the respective outside surfaces of the first and second tubular members and the second portion of the body; wherein the frame is composed of a first material; and wherein the body is composed of a second material that is different from the first material.