OBNEM exploration in the South China Sea

2021 
Summary The ocean bottom node electromagnetic (OBNEM) exploration technology, as a kind of marine electromagnetic exploration technology, has been recognized by an increasing number of oil companies for its role in reducing drilling risks. In recent years, with the support of the National 863 Project and the Enterprise Industrialization Project, the development of submarine high-power current-emitting system and high-precision electromagnetic sensor have made significant breakthroughs. The working current of our self-developed launching system has obtained 1140A, the daily drift of high-precision sensor is up to 30 microvolts, and the noise level of characteristic frequency point reaches pT. The OBNEM exploration equipment has been tested and applied in the South China Sea region, both for the detection of hydrate resources and deep seabed oil-gas resources.
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