Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1984-03-28
1987-01-06
Smith, Alfred E.
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
364177, 364422, G01V 504, G01T 117
Patent
active
046348638
ABSTRACT:
For use in a well logging tool which responds to randomly spaced pulses of different amplitudes, a pulse processing circuit featuring reduced dead-time is incorporated. Typically, it can be used with either a gamma ray or neutron detector. The circuit enables mixed amplitude pulses with irregular spacing to be processed with relatively different rise and fall times. The circuit processes the trailing or following portion of a pulse differently from the leading or rising portion to enable a separate following second pulse to be observed.
REFERENCES:
R. A. Boie, A. T. Hrisoho and P. Rehak, "Signal Shaping and Tail Cancellation for Gas Proportional Detectors at High Counting Rates", Nuclear Instruments and Methods, vol. 192, Nos. 2-3, (Feb. 1982), pp. 365-374.
Beard William J.
Halliburton Company
Hannaher Constantine
Smith Alfred E.
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