Boots – shoes – and leggings
Patent
1985-05-06
1989-09-12
Kemeny, Emanuel S.
Boots, shoes, and leggings
73154, G06F 1520
Patent
active
048666076
ABSTRACT:
In an oil well instrumentation system, the downhole sensor system is controlled by a computer which is powered-on only during sampling movement. An independent circuit, continuously powered, detects significant sensor rate-of-change values whereby the computer-sampling equipment is powered-on. A self-contained memory gauge includes either semiconductor or magnetic core memory for retaining downhole information related to sampled parameters, such as borehole temperature and pressure. A microprocessor-based computer manages the power utilization by independently and selectably energizing and deenergizing different sections of the gauge. The magnetic core memory is tested for operability, and the addressing of the magnetic core memory is adjusted in accordance with any inoperable memory locations. Samples of the monitored environmental conditions can be taken at variable rates dependent upon software monitoring of the condition, the remaining battery life and the remaining memory capacity and in response to hardware monitored pressure changes. Each sample can be taken to a selectable resolution. A watchdog circuit monitors the microprocessor to insure that it is operating within a preselected time limit.
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Anderson Terry O.
Dant Ronald E.
Donaghe Charles D.
Duncan Richard L.
Forehand Gilbert H.
Gilbert III E. Harrison
Halliburton Company
Kemeny Emanuel S.
McBurney Mark E.
Walkowski Joseph A.
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