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US08188882B2 Depth measurement by distributed sensors 有权
分布式传感器的深度测量

Depth measurement by distributed sensors
Abstract:
A downhole device, position verifiable string includes a downhole device; a string in operable communication with downhole device; and a plurality of sensor units each sensing at least one of acceleration and strain in the string and spaced from each other along the string from downhole device to a remote location of the drill string and method.
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