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AssigneeSchlumberger Technology Corporation
InventorsMarcel Boucher, Brian Peter Jarvis, Tim McCarthy
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An accelerometer caliper while drilling arrangement comprising a drill bit having an axis of rotation and a gauge region, a caliper tool body, a first accelerometer mounted upon the caliper tool body and arranged to measure acceleration in a first direction, and a second accelerometer mounted upon the caliper tool body and arranged to measure acceleration in a second direction orthogonal to the first direction, wherein the caliper tool body and the drill bit are coupled to one another in such a manner that the first and second accelerometers are mounted in a known relationship to the drill bit.
An accelerometer caliper while drilling device comprising a drill bit having an axis of rotation and a gauge region, a caliper tool body, a first accelerometer mounted upon the caliper tool body and arranged to measure acceleration in a first direction, and a second accelerometer mounted upon the caliper tool body and arranged to measure acceleration in a second direction orthogonal to the first direction, wherein the caliper tool body and the drill bit are coupled to one another in such a manner that the first and second accelerometers are mounted in a known relationship to the drill bit.
An accelerometer caliper while drilling device comprising a drill bit having an axis of rotation, a gauge region, and a caliper tool region, a first accelerometer mounted upon the caliper tool region of the drill bit and arranged to measure acceleration in a first direction, and a second accelerometer mounted upon the caliper tool region of the drill bit and arranged to measure acceleration in a second direction orthogonal to the first direction.
A bottom hole assembly comprising a drill bit having an axis of rotation and a gauge region, an accelerometer caliper tool body, a first accelerometer mounted upon the caliper tool body and arranged to measure acceleration in a first direction, and a second accelerometer mounted upon the caliper tool body and arranged to measure acceleration in a second direction orthogonal to the first direction, wherein the caliper tool body and the drill bit are coupled to one another in such a manner that the first and second accelerometers are mounted in a known relationship to the drill bit, a controller/processor arranged to receive signals from the first and second accelerometers and a mud telemetry transmitter arranged to transmit data under the control of the controller/processor.
Dependencies are inferred from the claim text.