Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1978-02-17
1980-02-19
Moskowitz, Nelson
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
340854, 166 66, 175 50, G01V 140
Patent
active
041897056
ABSTRACT:
A well logging system includes a logging tool adapted to be passed through a borehole traversing an earth formation. The logging tool contains a sensor sensing a condition of the earth formation and providing electrical pulses corresponding in number and peak amplitude to the sensed condition. A first electrical pulse from the sensor occurring during each predetermined time period of a plurality of predetermined time periods, is stretched and then converted to parallel digital signals. A register receives the parallel digital signals and provides a serial digital signal in response to the shift pulses. A network provides an electrical synchronization pulse each time period prior to the occurrence of the shift pulses. A light emitting diode converts the synchronization pulses and the serial digital signals to corresponding light pulses. A cable including a fiber optic conductor transmits the light pulses uphole to the surface. Surface electronics includes a light-to-electrical converter for providing corresponding electrical pulses in accordance with the light pulses, so that the light-to-electrical converter provides a synchronization pulse followed by a serial digital signal each time period. Another circuit provides a set of shift pulses in response to the synchronizing pulse from the light-to-electrical converter, and an output circuit provides parallel output digital signals corresponding to the sensed condition in accordance with the shift pulses and the serial digital signals from the light-to-electrical converter.
REFERENCES:
patent: 3820063 (1974-06-01), Sexton
patent: 3905010 (1975-09-01), Fitzpatrick
patent: 3979716 (1976-09-01), Pitts et al.
patent: 4107644 (1978-08-01), Howlett
Eppes et al., "Use Optical Fibers . . . Fiber Basics", 4/12/76, _pp. 90-94, Electronic Design, vol. 24, #8.
Aoki et al., "Development of Optical Fiber . . . Power Co.", 5/77, _pp. 181-188, Hitochi Review, vol. 26, #5.
Gillespie Ronald G.
Kulason Robert A.
Moskowitz Nelson
Ries Carl G.
Texaco Inc.
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