Communications: electrical – Continuously variable indicating – With meter reading
Patent
1979-04-18
1981-08-04
Moskowitz, Nelson
Communications: electrical
Continuously variable indicating
With meter reading
731515, G01V 140
Patent
active
042825237
ABSTRACT:
An improved technique is provided for comparing the velocity of an elongated well logging instrument traversing an inclined earth borehole with the playout velocity of the well logging cable at the earth's surface to control both the cable hoist drum rotation and the rate of movement of the subsurface instrument and thus insure cable playout is in equilibrium with the logging instrument movement. Method and apparatus are described for detecting any reduction in movement of the logging instrument through the borehole and for reducing the velocity of the logging cable playout in response thereto by reducing drum rotation. Further, when the velocity of cable playout slows to a preselected value, a monitoring circuit generates control signals which actuate a means of power attached to or integral with the logging instrument which, upon initiation, apply a force to move the logging instrument upward or downward within the borehole.
REFERENCES:
patent: 3027649 (1962-04-01), Sloan
patent: 3372277 (1968-03-01), Youmans
patent: 3490149 (1970-01-01), Bowers
patent: 3497958 (1970-03-01), Gallwitzer
patent: 3552025 (1971-01-01), Whitfill
patent: 3566478 (1971-03-01), Hurlston
patent: 3891038 (1975-06-01), Delestrade et al.
patent: 4031750 (1977-06-01), Youmans et al.
patent: 4041780 (1977-08-01), Angehrm
patent: 4047430 (1977-09-01), Angehrm
patent: 4166500 (1979-09-01), McPhee
Byron Richard M.
Dresser Industries Inc.
McCollum Patrick H.
Moskowitz Nelson
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