Drill string orienting motor

Details Drill string orienting motor Drill string orienting motor

1996-10-23

1998-07-07

Tsay, Frank

Boring or penetrating the earth

With tool shaft detail

Axially telescoping shaft section

175 74, E21B 1707

Patent

active

057754446

ABSTRACT:
The housing of the orienting motor serves as a length of pipe string and rotates the lower end relative to the upper end. Rotation is in preselected increments each time the rate of fluid flow in the pipe string is changed between preselected limits. Once rotated an increment the housing is rotationally locked as long as flow rate is maintained greater than a preselected amount. When fluid flow is stopped, the actuation system resets, in time, to the starting position but a one way clutch retains the previous rotational relationship between opposite ends of the housing. Resetting time is adjustable to permit a preselected activity period before flow restart without further changes in the orienting action.

REFERENCES:
patent: 1641206 (1927-09-01), Smith
patent: 1817067 (1931-08-01), Crowell
patent: 3747698 (1973-07-01), Chapman
patent: 5117927 (1992-06-01), Askew
patent: 5156223 (1992-10-01), Hipp
patent: 5404944 (1995-04-01), Lynde et al.
patent: 5454420 (1995-10-01), Snider et al.
patent: 5669457 (1997-09-01), Sebastian et al.
patent: 5673765 (1997-10-01), Wattenburg et al.

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