Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Patent
1995-10-25
1998-02-24
Neuder, William P.
Boring or penetrating the earth
Automatic control
Of advance or applied tool weight
175 45, E21B 4700
Patent
active
057203555
ABSTRACT:
Bit instrumentation and method for controlling drilling are disclosed that include multiple resistivity sensors 5B and accelerometer sensors 4 disposed within an insert portion 1B of the drill bit 1. The resistivity sensors have a beveled portion to provide an interference fit with a cavity formed within the insert portion 1B of the drill bit. Resistivity sensors 5B may be used to determine the motion of the bit 1 within the wellbore 106 including unstable bit operation such as bit whirling and bit tilting. As well, accelerometer sensors 4 may also be provided in conjunction with the resistivity sensors 5B to provide information concerning motion, accelerations and stresses applied to or within the drill bit 1.
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Bittar Michael
Lamine Etienne
Langeveld Kees
Rodney Paul F.
Stassain Pierre
Baroid Technology Inc.
Neuder William P.
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