Abstract
Marine controlled source electromagnetic method (MCSEM) is a new and versatile method for hydrocarbon detection. Deep sea hydrocarbon reservoir exploration is still challenging and expensive. Due to unreliability for the detection of DHIs using seismic data, new methods have been investigated. Sea bed logging (SBL) is a new technique for the detection of deep target hydrocarbon and has potential to reduce the risks of DHIs (direct hydrocarbon indicators) in deep sea environment. The magnitude of EM waves is very important for the detection of deep target hydrocarbon reservoir below 4000m from the sea floor. Nanotechnology has been introduced very effective and shows promising results in many research fields. Ferrite magnetic materials play an important role in many applications due to its versatile magnetic properties. The aluminum based EM antenna is developed and NiZn, YIG ferrite as magnetic feeders are used to increase the field strength from EM antenna. FESEM images show that grain size increases with the increase of sintering temperature and ranges from 30 to 60nm for Ni0.8Zn0.2Fe2O4 where as grain size increases from 45 to 110nm for Y3Fe5O12 samples. Due to better magnetic properties, samples (Ni0.8Zn0.2Fe2O4-PVDF) sintered at 950°C and (Y3Fe5O12-PVDF) sintered at 1350°C were used as magnetic feeders for the EM antenna. It was investigated that magnitude of EM waves from the novel EM antenna with (Ni0.8Zn0.2Fe2O4-PVDF) sintered at 950°C and Y3Fe5O12-PVDF) sintered at 1150°C increases up to 143% and 220% respectively in the lab scale environment. Modeling results by using CST software shows that new EM antenna with magnetic feeders has an ability to increase the D, E, B and H field components. This novel EM antenna with magnetic feeders may be used for the deep target hydrocarbon detection due to enhanced field strength. This new EM transmitter based on nanotechnology may open new horizons for oil and gas industry for deep target hydrocarbon reservoir.
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