Method and apparatus for earth boring

Details Method and apparatus for earth boring Method and apparatus for earth boring

1975-06-27

1977-06-28

Purser, Ernest R.

Boring or penetrating the earth

Processes

Boring with specific fluid

166 65R, 175104, E21B 310

Patent

active

040319695

ABSTRACT:
Method and apparatus for earth boring using a rotary drilling rig and drilling string for mounting a bottom hole electrical motor to rotate a drill bit to form the borehole. Electrical power from an electrical power source at the earth surface is communicated to the electric motor by conductor lines positioned in the bore of the drill string and having releasable supporting connectors to enable adding and removing of lengths of conductor lines as desired. An electrical conductor swivel unit is mounted in the drilling string to enable rotation of the drilling string while operating the electric motor and an extendable electrical connector is provided in the kelly to compensate for variation in conductor lengths while effecting electrical contact with the conductors.

REFERENCES:
patent: 2224439 (1940-12-01), Re Lee
patent: 2803433 (1957-08-01), Smith
patent: 2966946 (1961-01-01), McCulloch et al.
patent: 3372762 (1968-03-01), Cullen et al.
patent: 3378811 (1968-04-01), Cullen et al.
patent: 3807502 (1974-04-01), Heilhecker et al.

Affiliated with

Also associated with

Rating

Method and apparatus for earth boring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for earth boring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for earth boring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1516093