Invention Grant
US07886827B2 Apparatus for, and method of, landing items at a well location 有权
在井位上着陆物品的装置和方法

Apparatus for, and method of, landing items at a well location
Abstract:
An apparatus for, and method of, lowering items from a drilling rig to a well located below it through the use of a landing string comprised of drill pipe having an enlarged diameter section with a shoulder, in combination with upper and lower holders having wedge members with shoulders that engage and support the drill pipe at the shoulder of the enlarged diameter section, the shoulder of the drill pipe and the shoulders of the wedge members being rotatable with respect to each other.
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