Отправлено: 20.06.07 02:21. Заголовок: Спектральный анализ каротажа для тонкослоистых отложений

Spectral Analysis of Well Logs for the Thin–
Bedded Miocene Succession in the Polish
Carpathian Foredeep
J.A. Jarzyna* (AGH - University of Science and Technology) & Z. Greplowski
(AGH UST (student))
SUMMARY
Sandstone, mudstone and claystone thin-bedded succession in two regions of the central and north-eastern
part of the Carpathian Foredeep were analyzed in aspect of delineation of reservoir and sealing beds and
correlating them in gas deposit areas. Gamma and Density logs were the basis to show lithology variations
as well as Neutron and the longest, HO12, induction component of HRAI were used to improve gasbearing
horizons. Spectral approach to well logs provided authors with results of Predicted Error Filter
Analysis applied to point out detailed changes in lithology. PEFA results were finally confirmed by
INPEFA outcomes improving depth and time of distinct changes of sedimentary conditions. Maximum
Entropy Spectral Analysis was used to show that cyclic long-term sedimentation includes short period
cycles providing sandstone thin beds, frequently being gas-reservoirs. It turned out that CycloLog 3.1
(ENRES) offering mathematically justified well logging processing provided petrophysicists with new
results making geological interpretation quicker and easier and more efficient. The results of well log
spectral analysis are also useful in seismo-stratigraphic interpretation.

Приводится достаточно давно известный аппарат анализа Фурье
Результат применения используется для корреляции
Про wavelet ни слова (проверил на wave поиском) ;-)