Boots – shoes – and leggings
Patent
1981-07-16
1983-04-26
Smith, Jerry
Boots, shoes, and leggings
73154, 364179, 364573, E21B 4706, G06F 1520
Patent
active
RE0312223
ABSTRACT:
A [down-hole] temperature, pressure and time measuring and digital data storage tool, utilizing self-contained microprocessor-based data taking and data reduction, with power conservation realized by processor controlled powering of data transducers only during sample periods and control of the rate at which samples are taken as an inverse function of dynamically calculated data rate of change. Data storage is effected only for data samples representing a significant change in data magnitude as established by a processor program-defined significant-data criteria.
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T. S. Matthews, "Bidirectional Telemetry for Downhole Well Logging", Petroleum Engineer, Sep. 1977, pp. 56-62.
Otis Engineering Corporation
Smith Jerry
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