The Electric Dipole Parameters Optimization Design And Application For Oil And Gas Exploration In Oceans

Recently in a radial current-source applications have a lot of experience, called th eelectric dipole sources, is in the transient electromagnetic method and marine control led-source electromagnetic methods(Marine Controlled Source Electromagnetic) a s a transmitter. Electric dipole source is a source of alternating transverse polarizatio n field,is to simulate a vertical electric dipole on the surface of the vertical wires. I n the course of recent decades, which in theory have been developed and passed the p ractical test. Now we are going to study is the proper model for the next horizontal el ectric dipole(HED) with a vertical electric dipole(VED) in the electricand magnetic fields in the offshore oil and gas exploration. Through a variety of ways we collect m arine electromagnetic magnetotelluric, marine controlled-source electromagnetic meth ods and other technical information, complete method, forward modeling and inversi on method of data preprocessing and Imaging results. Through the existing progress a nd achievements at home and abroad in recent years,analysis of horizontal electri c dipole and vertical electric dipole source in marine geological application of securit y engineering possibilities, feasibility, and the corresponding research and applicatio n programmes. Marine electrical resistivity measurement of magnetic TM is also usef ul for exploration. Sea water in conventionalmagnetic pattern dominated by larger noi se data. Because the water attenuation of the field, MCSEM is the only successful det ection of offset system can also deal with high resistivity. However, TM only apply t o water depth less than 1000 meters and offset under the environment of about 15 k m. Use of marine controlled-sourceelectromagnetic methods may help to resolve the s ituation, because TM at any time does not depend on the total conductance and in de pth case, are very sensitiveto high resistance. In 1982, Alan D.Chave and Charles S.Cox are electromagnetic field of a horizontal electric dipole in the frequency domai n solution of this marine controlled-source electromagnetic methods study of one-dim ensional kicked off. Marine controlled-source electromagnetic methods using movabl e horizontal wire source and array of sea-floor electric field receiver. Emission sourc e electrodes placed in deep to reduce as far as possible from the water-air interface o f the air waves and the effect of spatial electromagnetic noise. Emission sources of lo w frequency(0.10Hz-50Hz) electro-magnetic signal not only to the dissemination an d communication to the seabed in water. To harbour propagation of electromagnetic waves into the Harbour, where the high impedance(oil and gas) interactions, respon d to electromagnetic fields, part of the energy returning ranked at the bottom of the receiver. Due to the conductive layer along the propagation of electromagnetic waves a long the high-resistance loss greater than, and the lack of high-resistancecompared to t he homogeneous, signs will step up in the reservoir. Geological analysis by compari ng the observations and forecasting models, or using mathematical means using invers ion algorithm to recognize resistivity anomaly and to infer layer structure information.According to electromagnetic theory, analysis and research of marine controlledsource electromagnetic theory and latest development status of key to accomplish th e following tasks:(1) Research at home and abroad of marine controlled-source electromagneti c methods research and development, analysis of the development trend of marine ele ctromagnetic.(2) Describes hardware and indicators for marine electromagnetic now, such as e xploration vessels, indicators of major components such as transmitters, receivers,an d describe electromagnetic principle and vertical electric dipole, a horizontal electric d ipole in sea law in layered media.(3) According to MCSEM principle we apply a dimension detection technique o f horizontal electric dipole and vertical electric dipole was one-dimension forward mo deling calculations, studied marine controlled-source electromagnetic electric and ma gnetic field components for the response curve of submarine high resistance thin laye r. Compare the electromagnetic field components for the high resistance thin layer o f sensitivity. According to the simulation obtained in different marine controlled-sour ce electromagnetic frequency electromagnetic response in the context of, and analyze d the frequency factor. While air waves is one of the main factors in MCSEM, pape r in order to study the air waves in water depth, the relationship between the sending and receiving, and design corresponding models, final analysis of a horizontal elect ric dipole and vertical electric dipole source in the offshore oil and gas exploration i n the feasible.(4)Depending on the electric dipole source input parameters are electro-magneti csignals for oil and gas exploration in oceans wave different signals of the compari son among different response curves, for il and gas exploration in oceans function s setting the correct parameters to provide the theoretical basis.To sum up, using one dimensional exploration in marine electromagnetic researc h program, completed the calculation of one dimensional model. Discuss and analyz e a number of different factors impact on the MVO curve, worked for marine electrom agnetic research of horizontal electric dipole and vertical electric dipole field and pro vide a theoretical basis for the calculation of magnetic field distribution. While worki ng for the forward algorithm and correction of data laid the foundation studies.