System and method for calibration of well logging tools

Details System and method for calibration of well logging tools System and method for calibration of well logging tools

2007-10-09

2007-10-09

Patidar, Jay M (Department: 2862)

Electricity: measuring and testing

Magnetic

Calibration

C324S339000

Reexamination Certificate

active

11394720

ABSTRACT:
By breaking the calibration into two parts—one calibration offset being associated with a first portion, and the other calibration offset being associated with a second portion, it is possible to combine the various calibration offsets for a particular first portion mated with a particular second portion. Thus, any one of a number of downhole first portions can be combined, on a session-by-session basis, with any number of second portions. In one embodiment, the second portion calibration is specific to the particular second portion, and in another embodiment the calibration for a second portion is a fixed calibration offset that is based on a second portion type, such as the second portion size.

REFERENCES:
patent: 4800496 (1989-01-01), Barber et al.
patent: 5467019 (1995-11-01), Lester et al.
patent: 5708203 (1998-01-01), McKinley et al.
patent: 6856255 (2005-02-01), Chalitsios et al.
B. Clark et al., “Electromagnetic Propagation Logging while Drilling: Theory and Experiment,” SPE Formation Evaluation, pp. 263-271 (Sep. 1990).

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