Sercel GeoWave II tool breaks downhole temperature records

NANTES, France -- Sercel has announced that, on Monday, its recently launched downhole seismic array tool, GeoWave II, broke temperature records during field trials.

Specially designed for deployment in high-pressure wells with high temperatures of up to 400°F, GeoWave II has proven its capability for continuous data acquisition in a deep hot well at 362°F.

During field trials in northeastern France, the 16-level GeoWave II system was deployed in a 5,000 m deep well in the presence of a major international service company. GeoWave II recorded multiple VSP shots with repeatable VSP data, both in open and cased holes, as well as high-frequency microseismic events at different sampling rates, including 0.25 ms.

This performance represents the world’s first borehole seismic survey to be acquired with a digital tool over a long duration in temperatures of above 347°F. The GeoWave II’s successful deployment follows on from a positive market response to the tool’s innovative features and unique specifications, enabling it to push back the boundaries of borehole seismic beyond its historical limits in terms of temperature, array length and flexibility of deployment.

Pascal Rouiller, Sercel CEO, said, “This record-breaking performance confirms the ability of GeoWave II to conduct safe and efficient Vertical Seismic Profile and hydraulic fracture monitoring surveys in the most hostile well environments. We are confident that GeoWave II clearly addresses the increasingly challenging downhole environments faced by our customers.”