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US 4,535,625 AGranted
Method of increasing the vertical resolution of well log data
AssigneeMobil Oil Corporation
InventorW. D. Lyle, Jr.
Life of this patent
Estimating the term…
Abstract
Disclosed is a logging technique wherein measured parameters which are inherently weighted average measurement values are inverse filtered to improve the resolution of the measured values. A processing technique is employed, wherein higher resolution values of logged measurements are obtained from information contained in the measurements themselves, and the response function of a logging tool and without emulating a white-noise driven system.
Claims5
A method of increasing the vertical resolution of well log data, comprising the steps of:
- moving a well logging tool relative to a well bore and taking parameter measurements at a plurality of discrete points along the well bore to produce a log of said parameter measurements, said parameter measurements being weighted average measurements of true parameter values;
- inverse filtering the data contained in said log to reduce the effects of weighted averaging on parameter measurements, said inverse filtering operation determining higher resolution estimates of said logged measurements from information contained in said measurements, and the response function of said logging tool and without emulating a white-noise driven system;
- producing a log of said inverse filtered data which more accurately reflects said true parameter values.
Dependencies are inferred from the claim text.