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Abd Majid, Nur Intan Marlyny (2010) SIMULATION AND DESIGN TRANSMITTER FOR SEABED LOGGING (SBL). Universiti Teknologi Petronas. (Unpublished)

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Seabed logging (SBL) is an application of marine controlled source electromagnetic (CSEM) method which is used to detect the location of oil reservoir. A recently developed transmitter is using Horizontal Electric Dipole (HED) transmitter based on electromagnetic (EM) surveying technique. The technique has proven particularly useful for detecting thin and highly resistive layers of hydrocarbon reservoirs. However, to detect the hydrocarbon reservoirs at very deep seawater still remains a challenge. This project has come out with a new idea of constructing twin curve antenna together with feeders which made from nickel zinc ferrites to enhance the induced magnetic field. Aluminium is the best fit to this project design since it has higher resistance corrosion, light, cheaper than copper and also easy to fabricate. From the CST simulation, the shape of half ring antenna gives greatest improvement on the amplification of EM wave as compared to the ring shape. Later on, the investigation of the thickness and the curvature of the antenna were observed. Three different diameters which is 0.38mm, I.OOmm and IO.OOmm were tested and the results showed that the aluminium rod at a diameter of lO.OOmm gives highest percentage of 12.79% improvement. The half ring shape gives better result output with a slight increment of 16.80% as compared to the parabolic curvature. The combination of magnetic feeders and the half ring antenna enhanced the output of EM wave with 4 number of toroid gives the maximum amplification signal of 7001%. Other method to amplify the input current signal is by using bridge amplifier. Further improvement to the current design was done by combining two half ring antennas with feeders and as mentioned earlier, it is called as twin curve antenna. This antenna has been tested in a scaled tank filled with salt water and the propagation of EM wave is improved at 388.53% comparing to the earlier design.

Item Type: Final Year Project
Academic Subject : Academic Department - Electrical And Electronics - Pervasisve Systems - Digital Electronics - Design
Subject: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Engineering > Electrical and Electronic
Depositing User: Users 2053 not found.
Date Deposited: 22 Oct 2013 11:32
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/9276

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