| 摘要 |
A polymeric centralizer for casing having a body adapted to fit closely about the casing, a plurality of blades extending substantially longitudinally along an outer surface of body, a slit through a blade and opposing groove to allow the centralizer to be spread apart and a fastener to pulling the slit together and tightening the centralizer about the casing. The polymeric centralizer having strength characteristics capable of withstanding the forces encountered in casing operations. The polymeric centralizer is non-sparking for use in hazardous environments, abrasion and wear resistant, and provides protection from electrolysis between adjacent casing strings. The polymeric centralizer is light weight, allowing increased transportation capacity at a economical cost and allows easy attachment to broken down or made-up piping, production string or casing and including hole or cutaways for receiving surface cabling.
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