Microprocessor computerized pressure/temperature/time down-hole

Details Microprocessor computerized pressure/temperature/time down-hole Microprocessor computerized pressure/temperature/time down-hole

1977-12-23

1979-07-17

Smith, Jerry

Boots, shoes, and leggings

73154, 364112, 364573, E21B 4706, G06F 1520

Patent

active

041617827

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.

REFERENCES:
patent: 3591779 (1971-07-01), Sutherland, Jr.
patent: 3732728 (1973-05-01), Fitzpatrick
patent: 3781869 (1973-12-01), Sudnick et al.
patent: 3790910 (1974-02-01), McCormack
patent: 3841152 (1974-10-01), Guest
patent: 4000643 (1977-01-01), Pearson
patent: 4033186 (1977-07-01), Bresie

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