Drill string telemeter system

Details Drill string telemeter system Drill string telemeter system

1976-12-23

1978-11-21

Wilbur, Maynard R.

Communications: electrical

Selective

Interrogation response

340 18CM, 166206, 174 47, G01V 140, E21B 2300

Patent

active

041268482

ABSTRACT:
A method and apparatus for telemetering information from the bottom of a borehole to the surface while drilling wherein a wireline is used to transmit the information from the bottom of the borehole to an intermediate position in the drill string, and a special drilling string, having an insulated electrical conductor, is used to transmit the information from the intermediate position to the surface. In an alternate arrangement, an electro-magnetic method may be used to transmit information from the intermediate position to the surface. There is also disclosed special equipment that permits removal of the jumper wire from the surface without removing the drill string from the borehold.

REFERENCES:
patent: 2339274 (1944-01-01), Kothny
patent: 3664416 (1972-05-01), Nicolas et al.
patent: 3696332 (1972-10-01), Dickson, Jr. et al.
patent: 3807502 (1974-04-01), Heilhecker et al.
patent: 3957118 (1976-05-01), Barry et al.

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