Computerized method for the zonation of digitized well logs
- Phillips Petroleum Co., Bartlesville, OK
Approximating well logs by zones corresponding to stratigraphic units of the sedimentary section is the first step in development of computer programs to extract more information from log data. Advantages of computer zonation are: (1) production of subsurface stratigraphic sections more rapidly and economically by permitting computer correlation of logs from well to well in an area, (2) automatic comparison of logs in the same well to adjust depths and (3) reduction of computation time as compared to point-wise manipulation of unzoned data. A technique has been developed to pick zone boundaries on digitized well logs by computer. This method consists essentially of searching a smoothed version of the well log for large changes in slope (i.e., searching for extrema in the derivative of amplitude with respect to depth). Examples are presented for the induction electric (IES), compensated formation density (FDC), gamma ray (GR) and self potential (SP) logs.
- OSTI ID:
- 7238773
- Journal Information:
- Log Anal.; (United States), Journal Name: Log Anal.; (United States) Vol. 15:3; ISSN LGALA
- Country of Publication:
- United States
- Language:
- English
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