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Research and Application of Multi-component Interpretation Technology

Author: XiaLing
Tutor: LiLuMing
School: Chengdu University of Technology
Course: Solid Earth Physics
Keywords: Multi-component Impedance inversion S-wave velocity ratio Poisson's ratio Shear modulus Lame constants
CLC: P631.4
Type: Master's thesis
Year: 2007
Downloads: 172
Quote: 6
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Abstract


Joint multi - wave and multi - component seismic data interpretation problems , geological results from multi- wave data , and to promote the development of multi - wave exploration , on the basis of multi - wave data processing stack section , a multi - wave data stack parameter inversion , multi- wave horizon calibration and joint interpretation of the multi-parameter method . Specific research is divided into the following aspects : 1 ) to study the longitudinal waves and converted wave stack acoustic impedance inversion methods and applications . The longitudinal wave stack model method of acoustic impedance inversion method extended to impedance inversion of shear wave (SS) , and then converted wave (PS) the relationship between the reflection coefficient and SS shear wave reflection coefficient , reflection coefficient will be converted wave (PS) approximate conversion of the SS shear wave reflection coefficient , in order to achieve the converted wave (PS) with longitudinal wave stack inversion of shear wave impedance inversion method . Further and S-wave velocity ratio , Poisson's ratio , λρ , μρ other parameters can be obtained . 2 ) to study the wave profile compared and multi- wave horizon calibration methods and the application . Wave velocity were obtained on the basis of the existing acoustic logging , density logging , by conversion , with PP wave and P - SV wave reflection coefficient formula synthetic PP and P-SV wave seismic records of the PP and P - calibration SV wave section , not only to determine the geologic position of the reflected wave profile , can be calibrated vertical , the the layer bit relationship between the shear wave , and to lay the foundation for the subsequent geological interpretation . 3 ) to complete a comprehensive explanation of Guang'an area three-component multi - wave data . Comprehensive longitudinal wave impedance , wave impedance and S-wave velocity ratio , Poisson's ratio , λρ , μρ , and the intersection between them on the gas characteristics of the response carried out to determine the reservoir range of reservoir details depicted . The study seeking to achieve multi- wave parameters in the post-stack inversion method , calibration of multi- wave layers , and the completion of a multi-parameter joint interpretation . Use of the extract to multi - component seismic attribute analysis Guang'an 2 wells near gas-bearing reservoir intervals detail , to overcome the simple use of P-wave data for reservoir prediction is not the only problem , the details of the reservoir at the same time do a better description , the reservoir prediction accuracy has been greatly improved .

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CLC: > Astronomy,Earth Sciences > Geology > Geology, mineral prospecting and exploration > Geophysical exploration > Seismic exploration
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