Point gap assembly for a toroidal coupled telemetry system

Details Point gap assembly for a toroidal coupled telemetry system Point gap assembly for a toroidal coupled telemetry system

1981-03-19

1983-06-07

Moskowitz, Nelson

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

367 81, 166 66, 175 40, 455 40, G01V 140

Patent

active

043873723

ABSTRACT:
An insulated point gap assembly for a toroidal coupled telemetry system wherein a drill collar (38), operable to be connected to a lower portion of a drill string (32), carries a toroidal core having primary windings (88) and secondary windings (130). An aperture (154) is laterally fashioned through the drill collar. A conductor (150) is connected to one end of the secondary and extends through the aperture and the other end of the secondary is connected to the drill collar. The conductor is surrounded by an electrical insulation member (152). In a preferred embodiment, an axially extending sleeve of insulating material (156) is applied about the drill collar at the location of the conductor (150) to further isolate the conductor 15 from the drill collar.

REFERENCES:
patent: 2354887 (1944-08-01), Silverman et al.
patent: 2400170 (1946-05-01), Silverman
patent: 2414719 (1947-01-01), Cloud
patent: 2940039 (1960-06-01), Yost et al.
patent: 2992325 (1961-07-01), Lehan
patent: 3090031 (1963-05-01), Lord
patent: 3315224 (1967-04-01), Ferguson
patent: 3333239 (1967-07-01), Silverman
patent: 3831138 (1974-08-01), Rammner

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