Steering drill string

Details Steering drill string Steering drill string

1980-07-03

1982-04-13

Myracle, Jerry W.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Tool position direction or inclination measuring or...

73151, 175 61, E21B 704

Patent

active

043242979

ABSTRACT:
A method and apparatus for steering a rotary drilling operation wherein the magnitude and direction of the side force on the bit is measured and used to control the weight on the bit and the rotary speed. The side force on the bit is determined by disposing strain gauges on a cylindrical member above the bit and making instantaneous measurements. The direction of the force is determined from sensors disposed adjacent the bit to determine the orientation and inclination of the bit simultaneously with the force measurements. The information is transmitted to the surface where a computer can compare the measurements with a model of the drill string and determine the proper bit weight and rotary speed.

REFERENCES:
patent: 2666631 (1954-01-01), Mavor
patent: 3613805 (1971-10-01), Lindstad et al.

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