Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2006-06-06
2006-06-06
Thompson, Kenneth (Department: 3672)
Wells
Processes
With indicating, testing, measuring or locating
C166S064000
Reexamination Certificate
active
07055601
ABSTRACT:
A method is provided for estimating the position of a movable device in a borehole. The method comprises the steps of:(a) providing a prior location probability distribution associated with a first position of the device in the borehole,(b) providing a measurement of a putative distance moved by the device and/or a measurement of a characteristic of the surroundings of the device, the or each measurement being associated with movement of the device to a subsequent position in the borehole, and(c) calculating a posterior location probability distribution associated with the subsequent position, the posterior location probability distribution being conditional on the prior location probability distribution, and the or each measurement.
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DeStefanis Jody Lynn
Gahlings Steven
Schlumberger Technology Corporation
Thompson Kenneth
Wang William L.
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