Application Research For Pseudo-random Signal Exploration

Pseudo-random Electrical Exploration Method is proposed by Mr. He Jishan. It contains two methods:one is Wide-Field Electromagnetic Method, another one is Pseudo-random Induced Polarization Method. The methods have been examined and certified by a lot of tests.Because of using independent research, development of the instruments and advanced exploration thought, its operation rules in the actual application is different from other exploration methods that have exited. The first part of this paper introduces the basic principle of the Wide-Field Electromagnetic method, as well as the advantages and disadvantages of the different components in the measurement between horizontal electric dipole source and vertical magnetic accidentally source device. Then based on the objective conditions and wild working experiences, as well as the technical rules of the CSAMT and MT, the thesis puts forward relevant technical requirements and sorts out Wide-Field electromagnetic method for the field operation as a guideline. Then the paper expounds the Wide-Field Electromagnetic method of data processing, including data pretreatment, Bostic inversion,1D inversion,2D inversion and data imaging process. Then introduce the prospecting results using in Dayangshu basin oil-gas exploration and the coal mine water disaster exploration the two examples of application. The basic task and purpose of the two explorations are introduced, according to the actual situation, description of the construction process and construction mode. Finally mainly introduce data processing steps and the corresponding under the actual results of data processing, and also showed the results in practical application. And suggestions for improvement are given in the end of this part.The second part of the thesis firstly introduces advantages and disadvantages in different devices of pseudo-random signal Induced polarization method. And then according to the technical rules of Dual-Frequency IP method, the thesis summarizes some of the technical requirements and field operation method of the pseudo random signal IP method. Finally through the application of Inner Mongolia Dayangshu basin oil-gas exploration, it shows the advantage of pseudo random signal IP method, and puts forward the method of the shortcomings of the existing at present.