Integrated well logging system and method

Details Integrated well logging system and method Integrated well logging system and method

G - Physics

01

V

349/20

G01V 1/28 (2006.01) G01V 1/40 (2006.01) G01V 11/00 (2006.01)

Patent

CA 1167154

INTEGRATED WELL LOGGING SYSTEM AND METHOD Abstract of the Disclosure An improved well logging technique is provided for more accurately deriving and correlating a plurality of measurements made during a single traversal of a logging instrument through subsurface formations. In one exemplary embodiment, methods and apparatus are provided for deriving a more accurate and precise measurement of depth at which real-time logging measurements are made, and in particular for correcting anomalies occurring in the depth indication from cable stretch, yo-yo of the sonde in the borehole and the like. The more accurate and precise depth measurement is then utilized for generating well logging measurements on a depth-dependent basis, deriving at least some of such measure- ments in digital form and alternately transmitting to the sur- face digital and analog representations of such measurements. Furthermore, methods and apparatus are provided for deriving measurements of sub-surface earth formation from a plurality of logging instruments combined in a single tool, wherein such measurements are made during a single pass through a borehole with the resultant measurement data correlatively merged, recorded and displayed.

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