Boots – shoes – and leggings
Patent
1986-02-21
1988-03-29
Smith, Jerry
Boots, shoes, and leggings
33313, 73151, E21B 47022
Patent
active
047348607
ABSTRACT:
Apparatus and method for the surveying of bore holes, for example, oil wells and the like, to permit accurate three-dimensional mapping thereof, using an accelerometer package in an instrumentation pod which is lowered into the bore hole. In one embodiment the pod is lowered on the end of a rod string where adjacent rods connected together with Hookes-joint pivots which permit two degrees of freedom of movement between adjacent rods. In another embodiment, rigid interconnections of adjacent rods are used, and the rods are isotropic for twistless flexure as the rods encounter curves in the path of the bore hole. The instrumentation pod is lowered one rod-length at a time, and accelerometer readings are taken which, together with mathematical modeling of rod motion, permits calculation of updated pod position at all depths in the hole.
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Egli Werner H.
Vallot Lawrence C.
Honeywell Inc.
Jablon Clark A.
Smith Jerry
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