| 摘要 |
A casing centralizer is provided. Such a casing centralizer includes a tubular body substantially comprised of a plastics material and having an innermost surface, an outermost surface, and opposed ends. The tubular body is adapted to surround a well casing and to centralize the well casing within it wellbore. The innermost surface of the tubular body defines at least one recess that extends longitudinally and radially tapers along at least a portion of the innermost surface. An associated wellbore casing apparatus, downhole tool, and method of cementing a well casing into a well bore are also provided.
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