Dissertation > Excellent graduate degree dissertation topics show

Research on Numerical Simulation of the Response Characteristic of Multipole Acoustic Log in Natural Gas Reservoirs

Author: XianXiuMing
Tutor: FanYiRen
School: China University of Petroleum
Course: Earth Exploration and Information Technology
Keywords: gas reservoir identification multipole array acoustic slowness extraction time-frequency ratio of compressional and shear wave velocity spectrum attenuation
CLC: P631.81
Type: Master's thesis
Year: 2010
Downloads: 82
Quote: 0
Read: Download Dissertation

Abstract


The accurate identification and evaluation of natural gas reservoir is the key to the exploration and development of gas bearing reservoir. By establish two-phase porous formation’s multipole borehole acoustic field numerical model, Systematic study of the logging response characteristics on the multipole array acoustic in the gas reservoir. Extract the sensitive parameters to identify and evaluate the gas bearing reservoir. Accordingly, form a rapid and accurate multipole array acoustic method to identify the natural gas reservoir.Based on the theory of borehole acoustic field,we build the two-phase porous formation’s multipole acoustic field numerical model. To simulate the array acoustic wave in different geological conditions which are stimulated by multipole source. Analysis compressional wave, shear wave and mode wave that different component waveform of full wave’s logging response characteristics of the gas. Using time-frequency analysis technology to extract information from acoustic full wave, and it makes time domain and frequency domain to effectively integrate. Opening a window to the signal by time-frequency analysis technology, we can get the time local domain information from various spectrum components. By using time-frequency spectrum figure, we can clearly and directly observe the energy of full wave’s various components change with different gas saturation. Find out the special response of the gas layer.The velocity information of acoustic is an effective mean to identify gas layer. Ratio of compressional and shear wave velocity presence some applicable scope. Simulate the array acoustic logging response in different porosity, permeability and gas saturation. Extracting characteristics response of ratio of compressional and shear wave velocity. And decide its application in different environment. By comparing with the oil layer, determine its special response in gas layer, and lay the foundation for fast and intuitive multipole array acoustic identification and quantitative calculation. Spectrum information of dipole flexural wave can also be used to identify gas layer. By extracting the spectrum of dipole flexural wave from array acoustic, analysis the various sets of parameters of dipole flexural wave’s response characteristic for gas layer in different porosity, permeability and gas saturation. And find out the sensitive parameters from them that have the special response for gas layer. Determine the different parameters’application in different environment, and to be as a standard of qualitative identification of gas reservoir.All these researches provide a completely new method for fully using well logging information to identify gas reservoir.

Related Dissertations

  1. Optical Spectrum Diagnose of Stationary Plasma Thruster Channel Wall Sputtering Erosion,V433.9
  2. Research on Ionosphere Contamination of High Frequency Radar Echoes and Time-Frequency Analysis Technology,TN958.93
  3. Superresolution of Hyperspectral Images Based on Spatial-Spectral Information Coordination,TN911.73
  4. The Research on Ship Imaging Algorithm under the Sea Clutter Background,TN958
  5. Modulation Pattern Recognition and Parameter Estimation for Ground Wave Radiation Sources,TN957.51
  6. Research on the Doppler Wireless Location Techniques Based on DSSS,TN914.42
  7. Packet Loss Recovering Technology for Speech Transmission over Network,TN912.3
  8. The Simulation and Analysis of Spectrum Sensing Based on Higher Order Cumulants,TN911.23
  9. The Research and Implementation of Protein Classification Algorithm on the Basic of String Kernel,TP301.6
  10. Expression and Purification of Influenza a Virus M2 Protein and Detection of Its Antigenicity,R392
  11. Oxygen Delignification and Bleaching with Chlorine Dioxide of Reed Kraft Pulp,TS745
  12. Rapid Genotyping of ESBL Gene in Escherichia Coli and Drug Resistance Prediction,R446.5
  13. Anthracycline- DNA Interactions,R96
  14. Yanzhou Mining typical object spectrum database construction and application of,P208
  15. Density Functional Theory Calculation on Principle Vitamin Eliminating Free Radicals,TS201
  16. Analysis of Seismic Behaviour of Mega Frame-Tube Structure Based on ANSYS,TU352.11
  17. M1 of CRH2-300 Train Finite Element Analysis and Travelling Comfort,U266
  18. Selection Algorithm in Heterogeneous Network Based on An Economic Model,TN929.5
  19. Sensing Data Flasification Attack Defense for Cooperative Spectrum Sensing Schemes in Cognitive Radio Systems,TN925
  20. The Research on Object Matching Based on Major Color Spectrum and Spatial Distribution Entropy,TP391.41
  21. Sensitivity Study and Application of Complex Variabal Weight Function Neural Network,TP183

CLC: > Astronomy,Earth Sciences > Geology > Geology, mineral prospecting and exploration > Geophysical exploration > Underground geophysical > Borehole measurements
© 2012 www.DissertationTopic.Net  Mobile