Measuring and testing – Borehole or drilling – Downhole test
Patent
1982-04-01
1984-04-03
Myracle, Jerry W.
Measuring and testing
Borehole or drilling
Downhole test
364422, E21B 4900
Patent
active
044400209
ABSTRACT:
Disclosed is a well logging process of finding depth zones within each of which a number of logs are mutually consistent within a respective selected tolerance. Logs which have good vertical resolution, for example the porosity logs, are used to zone a depth interval, and thereafter logs which have poorer vertical resolution, such as basic resistivity logs, are divided into the same zones. The zones can be used, as non-limiting examples, to rectangularize the logs and thus reduce probable noise components thereof; to crossplot by zone rather than by depth level, and thus again reduce probable noise in crossplots; to speed up procedures which utilize large vertical segments of logs by using therein zones of constant measurement level rather than measurements for each individual depth levels; and for studies of sedimentary depositions and inter well fitting and recalibration.
REFERENCES:
patent: 4312040 (1982-01-01), Tinch et al.
patent: 4346593 (1982-08-01), Howells et al.
Southwick, S. H. et al., Digital Computer . . . Logs, Paper No. SPE711 for 38th Annual Fall Meeting of Soc. of Petroleum Engineers of AIME, 1963.
Testerman, J. D., A Statistical Reservoir-Zonation Technique, J.P.T., Aug. 1962, pp. 889-893.
Kulinkovich, A. E. et al., The Location . . . Computers, Prikl. Geofiz. (Russian), No. 39, pp. 107-113, 1964.
Boutemy Yves L.
Edmundson Henry N.
Myracle Jerry W.
Schlumberger Technology Corporation
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