Dataset of average P-wave velocities of lithostratigraphic units in the middle and southern Adriatic Sea (Italy): Extrapolation from digitalized sonic logs of exploration wells within ViDEPI project.

Authors

C Lombardo, M Cicala, F De Giosa, L Sabato, G Scicchitano, L Spalluto, G Tagliaro, M Tropeano, V Festa

Published in

Data in brief. Volume 67. Pages 113035. Epub Jun 28, 2026.

Abstract

The present data article deals with a dataset concerning sonic log-derived P-wave average velocities. Twelve offshore exploration wells (drilled between 1969 and 2000) in the middle/southern Adriatic Sea (pertaining Italy), have been taken into account. The used data consisted in converted legacy analog well-log information into standardized digital formats for their reuse in geological and geophysical applications. In particular, original raster well-log documents from the public Visibility of Data related to Oil Exploration Activities in Italy database were digitized to obtain sonic log data in CSV format, which consisted of interval transit time (Δt) values and their corresponding depths (referenced to sea level and accounting for rotary table height). Data processing to achieve the sonic log-derived P-wave average velocities was performed using Petrel™ software. A consistent, multi-step workflow was applied to all wells. In the first step, lithostratigraphic units were identified on the basis of the raster stratigraphic logs and defined within the software, by entering unit names, depths, and graphical attributes. Next, sonic log data were imported/converted in TXT and grouped according to the lithostratigraphic units. A block-averaging procedure was applied to each unit to reduce local variability in Δt values; therefore, representative average interval transit times (Δt_av), using root mean square (RMS) statistics, were generated. Using standard unit conversions, average P-wave interval velocities (v_av) were calculated from Δt_av. The final dataset consists of twelve Log ASCII Standard (LAS v2.0) files, one for each exploration well. Each file includes metadata and curves of original transit time, averaged transit time, and calculated average P-wave velocity versus depth. Moreover, outputs in PDF format of the lithostratigraphic framework and associated log data were generated for each exploration well. The dataset can be reused for seismic velocity modelling, time-depth conversion, basin and structural analysis, and subsurface interpretation in offshore settings. The standardized format allows for a direct integration into a wide range of subsurface software and facilitates the comparison with other regional or basin-scale velocity datasets. In addition, the dataset provides a reproducible digital reference for lithostratigraphic velocity information derived from legacy exploration wells in the Adriatic Sea.

PMID:
42434503
Bibliographic data and abstract were imported from PubMed on 11 Jul 2026.

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