Boring or penetrating the earth – With signaling – indicating – testing or measuring
Patent
1988-08-15
1990-02-20
Kisliuk, Bruce M.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
175 45, 166 66, 166250, 324355, 324356, 324369, E21B 4700
Patent
active
049018043
ABSTRACT:
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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Barron Charles D.
Thometz Theodore G.
Eastman Christensen Company
Kisliuk Bruce M.
Walkowski Joseph A.
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