courtesy Wavefield-Inseis

Two Norwegian oilfield survey companies anounced stock exchange listings on Thursday, with both — Bergen-based Wavefield Inseis and Oslo-based EMGS — boasting rival hydrocarbon detection gear.

Wavefield said it hopes to raise NOK500 million ($81 million) in its sell-off of up to 50 million shares, new and old. EMGS hopes to raise “between $80 million and $100 million” in its initial public offering of 18.5 million shares.

Wavefield brings 4D, Multi-azimuth and Wide-azimuth data to the geophysics of oilfields, plus “other technology” proffered via “strategic alliance”.

EMGS uses patented electro-magnetic seabed logging to pinpoint hydrocarbons.