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The Controlled SourceElectromagnetic Method CSEM is used for offshore hydrocarbon exploration.Hydrocarbon detection in seabed logging SBL is a very challenging task fordeep hydrocarbon reservoirs. The electromagnetic field response of an antennais unable to detect deep hydrocarbon reservoirs due to a weak electromagneticsignal response in the seabed logging environment. This work premise deals withthe comparison of the electromagnetic signal strength of a new antenna with astraight antenna and the orientation of an antenna for deep target hydrocarbonexploration. Antenna position and orientation Tx and Tywas studied using Computer Simulation Technology software CST for deeptargets in marine CSEM environments. The model area was assigned as 40 ′ 40 km to replicate the real seabed environment.From the results, the new dipole antenna shows an 804% and 278% increase inelectric and magnetic field strength than the straight antenna. An electric Eand magnetic H field component study was done with and without the presenceof a hydrocarbon reservoir. Ex and Hz field componentresponses with the new antenna at the1 kmtarget weremeasured in a deep water environment. It was analyzed that the antenna shows53.10% Ex and 83.13% Hz field difference in deepwater with and without a hydrocarbon reservoir at the30 mantenna position from the sea floor. From theantenna orientation results, it was observed that, the electric field Ex and magnetic field Hz responses decreased from 18% to 12% and 21% to16%, respectively but was still able to detect the deep target hydrocarbon reservoirat the4 kmtarget depth. This EM antenna may open newfrontiers for the oil and gas industry for deep target hydrocarbon detectionHC.


Control Source Electromagnetic CSEM; Seabed Logging SBL; Antenna; Computer Simulation Technology CST; Hydrocarbon HC

Cite this paper

N. Yahya, N. Nasir, M. Akhtar, M. Kashif, T. Hussain, H. Zaid and A. Shafie -Electromagnetic Response Studies of the Antenna for Deep Water Deep Target CSEM Environments,- Journal of Electromagnetic Analysis and Applications, Vol. 4 No. 12, 2012, pp. 513-522. doi: 10.4236-jemaa.2012.412072.

Autor: Noorhana Yahya, Nadeem Nasir, Majid Niaz Akhtar, Muhammad Kashif, Tanvir Hussain, Hasnah Mohd Zaid, Afza Shafie

Fuente: http://www.scirp.org/


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