04768152 is referenced by 12 patents and cites 23 patents.

Apparatus and method for the surveying of bore holes, for example, oil wells and the like, to permit accurate three-dimensional mapping thereof, using a single rate gyroscope and an accelerometer package in an instrumentation pod which is lowered into the bore hole. Signals from the accelerometers and the rate gyroscope plus the increments by which the pod is lowered into the well permit continual calculation of pod attitude and updated of pod position at all depths in the hole.

Title
Oil well bore hole surveying by kinematic navigation
Application Number
6/831982
Publication Number
4768152
Application Date
February 21, 1986
Publication Date
August 30, 1988
Inventor
Lawrence C Vallot
Shoreview
MN, US
Werner H Egli
Minneapolis
MN, US
Agent
Merchant Gould Smith Edell Welter & Schmidt
Assignee
Honeywell
MN, US
IPC
E21B 47/022
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