Qualifying Wireline DAS VSP Technology for Vertical Exploration Wells

Rafael Guerra; Mark Ackers; Rogelio Rufino; Johan Leutscher; Alexandre Bertrand; Um Salma; Sara Sandvik; Matteo Gennaro

doi:10.3997/1365-2397.fb2025091

ISSN: 0263-5046
E-ISSN: 1365-2397

Qualifying Wireline DAS VSP Technology for Vertical Exploration Wells
Authors Rafael Guerra¹, Mark Ackers², Rogelio Rufino³, Johan Leutscher², Alexandre Bertrand², Um Salma¹, Sara Sandvik² and Matteo Gennaro²
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¹ SLB RPE ² Var Energi ASA ³ SLB A&I
Publisher: European Association of Geoscientists & Engineers
Source: First Break, Volume 43, Issue 12, Dec 2025, p. 43 - 49
DOI: https://doi.org/10.3997/1365-2397.fb2025091
- Published online: 01 Dec 2025

Abstract

In early 2025 a wireline vertical seismic profile (VSP) logging benchmark test was conducted in a hydrocarbon exploration well drilled offshore Norway. The test compared distributed acoustic sensing (DAS) data, which were recorded using a hybrid optical-electric logging cable, to conventional geophone array data. The objective was to determine if the DAS approach could eliminate the need for a dedicated geophone VSP logging run in future drilling campaigns. This approach would reduce rig time by approximately 12 hours and CO2 emissions by tens of tons per well, while meeting the geophysical objectives of recording reliable time-depth-velocity data and true-amplitude zero-phase corridor stacks.

In this case study, we review some of the key aspects of the technology and of acquiring, processing, and interpreting DAS VSP data.

EAGE Publications BV

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References

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Qualifying Wireline DAS VSP Technology for Vertical Exploration Wells

First Break 43, 43 (2025); https://doi.org/10.3997/1365-2397.fb2025091

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Article Type: Research Article

Keyword(s): depth accuracy; distributed acoustic sensing (DAS); finite element analysis (FEA); geophones; vertical seismic profile (VSP); vertical wells; well to seismic ties; wireline logging

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Qualifying Wireline DAS VSP Technology for Vertical Exploration Wells

Abstract

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