Dissertation > Excellent graduate degree dissertation topics show

Geophone Orientation and Multiwave Wavefield Separation Method of 3D VSP

Author: DingPinBo
Tutor: LiLuMing
School: Chengdu University of Technology
Course: Applied Geophysics
Keywords: D VSP Three-component Rotational orientation detector Wavefield separation
CLC: P631.4
Type: Master's thesis
Year: 2011
Downloads: 43
Quote: 0
Read: Download Dissertation

Abstract


3D3C VSP technology development can largely solve the problem of exploration difficulty and precision. VSP three-component data acquisition is carried out in wells, however, the current use of three-component geophones are not well oriented, therefore, the wave field must be the necessary processing, as recorded by the three-component geophones. 3D3C VSP's biggest advantage compared with the surface seismic wave is able to receive all types of wavefield information for subsequent processing and interpretation work, but the three-component VSP acquisition of various types on the downstream wave they overlap each other, must be effectively separated on a downward wave and S-wave. In this paper, the characteristics of the three-dimensional three-component VSP seismic data to study the three-component rotational orientation and wave field separation. 1) First of a three-component geophones directional coordinate rotation direction of the relationship between the three components of the deviated geophones study deviated three-component, and in accordance with the conversion relationship between coordinates before and after the three-component rotation coordinates rotation principle, the last for the energy characteristics of the horizontal component of the azimuth angle of impact discussion, draw horizontal component azimuth formula. Rotational orientation of the the actual inclined shaft three-component data using this method, the desired results, and also to verify the feasibility of the method. 2) In this paper, the the 3D VSP Duo Bobo field separation problem, the kinematics and dynamics of seismic wave propagation angle, the apparent velocity of the wave field and polarization properties of differences in the various types of three separation methods: τ-p transform method, median filtering method, polarization decomposition. Τ-p transform the basic principles and wavefield separation in the process of research τ-p transform method, to analyze and transform aliasing study endpoints and truncation effects, and raised suppress various Effect of methods. Median filtering wavefield separation also studied to explore the impact of different parameter selection, and boundary effects on the separation results and the theoretical model and the actual data test achieved good separation effect. Finally, the polarization direction of the two-dimensional model of seismic wave, explore the the polarization decomposition separation of the application of the S-wave and S-wave polarization properties, combined with median filtering VSP multi-wave data wavefield separation.

Related Dissertations

  1. Research of Offset VSP Data Processing Methods,P631.4
  2. Research on Vehicle Scheduling Problem in Fresh Agriculture Products Logistics,F326.6
  3. Research on the Method of the 3-D VSP Multiwave Ray Tracing Forward Modeling,P631.4
  4. Search on 3D VSP Multi-Wave Field Separation,P631.4
  5. The Application of Walkaway VSP Technology in the Oilfield Development,P631.4
  6. The Forward and Inverse of Q Value Using Zero-offset VSP Data,P631.4
  7. Three-component Borehole Seismic Analysis and Application of Polarization,P631.4
  8. Radon Transform and Its Application in Seismic Data Processing,P631.4
  9. Interferometric Imaging of Walkaway VSP Data,P631.4
  10. Study on 3D VSP Simulation,P631.4
  11. With a high-resolution hyperbolic Radon transform wave field separation,P631.4
  12. Based on the realization of three-dimensional wave equation finite difference method intends VSP,P631.44
  13. Multi - azimuth reverse VSP tomography,P631.8
  14. Logistics and vehicles of the optimal scheduling,F250
  15. Multi-offset VSP Velocity Analysis and Reverse-time Migration,P631.4
  16. The Research and Design on Three-Component Piezoelectric Drilling Dynamometer and Torque-Loading Device,TH823
  17. Research on the Orthonormal Bases of Compactly Supported Wavelets and Application to Digital Watermark,TP309
  18. Wave Field Separation Technique Research of Multi-wave Seismic Exploration Data,P631.4
  19. Walkaway VSP data processing method AVO,P631.4
  20. The Study of Micro-seismic Wave Field Separation Technology,P631.4

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