Autodriller bit protection system and method

Details Autodriller bit protection system and method Autodriller bit protection system and method

2006-09-05

2006-09-05

Bates, Zakiya W. (Department: 3676)

Boring or penetrating the earth

Automatic control

Of advance or applied tool weight

C175S039000, C175S048000

Reexamination Certificate

active

07100708

ABSTRACT:
A controller provides an automatic bit protection sequence for an autodriller that can be initiated during the initial stage of set down of the bit within the formation. The automatic protection sequence establishes a setpoint for a parameter of interest (such as weight on bit, ROP, torque) associated with operation of the drilling system and then initiates a gradual increase in that parameter in order to achieve the setpoint. The bit protection sequence may be adjustable so that varying degrees of gradualness may be selected. The controller of the autodriller may also be provided with measured data for torque, rate of penetration (ROP) and/or the differential pressure of the mud motor of the drilling system. Each of these parameters is provided with a predetermined setpoint, and each may be selected as the controlling parameter for operation of the autodriller.

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PCT/GB2004/050045: Int'l Search Report: 4 pp.: Mar. 22, 2005.
PCT/GB2004/050045: PCT Written Opinion: 5 pp.: Mar. 22, 2005.

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