Communications: electrical – Selective – Having electron beam device
Patent
1976-06-28
1977-08-09
Birmiel, Howard A.
Communications: electrical
Selective
Having electron beam device
340 155MC, 174 70R, G01V 122
Patent
active
040414450
ABSTRACT:
The method utilizes a multiple-phone flyer-jumper connected to one channel of a series of channels of a remote data acquisition and telemetering circuit (RDATC). Each RDATC acts in combination with a group of geophone flyers, say 1, 2, 3, etc., to store, amplify, filter, gain control and digitize analog data from each group of flyers and then telemeter the data to recording circuitry in the field truck. Each flyer group can be flexibly made up of two, three, four or more flyer-jumpers; each flyer-jumper includes a central multi-conductor cable segment of say N+1 conductors, where N is an even positive number greater than two, terminating at each of its ends in the central leg of multi-armed connector. A plurality of series/parallel connected geophones, say nine in number are used in combination with the central segment. At the ends of the arms of each multi-armed connector pass another conductor cable segment (similar to the central segment, but called the "branch cable segment") in which only two of the cables are actively connected to the selected conductor pairs of the central segment. At the other end of each branch cable is a hermaphroditic connector including a 2 male-2 female combination, with connection occuring between 1 male-1 female subunit by paralleling them electrically. In that way the three geophone conductors of the central cable segment can be flexibly connected to 1, 2, 3, etc., or more similarly located connectors of other flyer-jumpers to increase signal response of the resulting flyer group.
REFERENCES:
patent: 3916371 (1975-10-01), Broding
patent: 3930145 (1975-12-01), Fort et al.
patent: 3938073 (1976-02-01), Fort et al.
patent: 4001769 (1977-01-01), Fort et al.
Birmiel Howard A.
Chevron Research Company
Freeland, Jr. R. L.
Messner H. D.
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