Articulated downhole surveying instrument assembly

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United States of America Patent

PATENT NO 4901804
SERIAL NO

07232471

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An articulated downhole surveying instrument and method for measuring parameters of a wellbore includes one or more laterally flexible coupling sections. The laterally flexible coupling sections are rigid in axial tension and axial compression, and are smaller in cross-section than the surveying instrument housing. A separate housing is used for each component of the surveying instrument, and each component housing is interconnected with the laterally flexible coupling. One or more flexible spacer bars are also provided. The spacer bars and coupling sections enable the assembly to be passed through a short-radius angle wellbore with greatly reduced risk of sticking or hanging up.

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Patent Owner(s)

Patent OwnerAddress
EASTMAN CHRISTENSEN COMPANY A CORP OF DE365 BUGATTI STREET SALT LAKE CITY UT 84126

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barron, Charles D Sandy, UT 4 444
Thometz, Theodore G Salt Lake City, UT 1 39

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