DALIAN UNIVERSITY OF TECHNOLOGY (20240264322). MULTI-PHASE WAVEFIELD INVERSION METHOD CONSIDERING BOTH BODY WAVES AND SURFACE WAVES IN HALF-SPACE OF ROCK MEDIA simplified abstract
MULTI-PHASE WAVEFIELD INVERSION METHOD CONSIDERING BOTH BODY WAVES AND SURFACE WAVES IN HALF-SPACE OF ROCK MEDIA
Organization Name
DALIAN UNIVERSITY OF TECHNOLOGY
Inventor(s)
MULTI-PHASE WAVEFIELD INVERSION METHOD CONSIDERING BOTH BODY WAVES AND SURFACE WAVES IN HALF-SPACE OF ROCK MEDIA - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240264322 titled 'MULTI-PHASE WAVEFIELD INVERSION METHOD CONSIDERING BOTH BODY WAVES AND SURFACE WAVES IN HALF-SPACE OF ROCK MEDIA
The present invention introduces a multi-phase wavefield inversion method that considers both body waves and surface waves in the half-space of rock media, addressing the deficiency in existing methods that overlook surface wavefields.
- Extraction of Rayleigh components that strictly adhere to standard elliptic polarization characteristics in a half-space using Snell's law of complex angles and forward modeling and inversion theory of body waves.
- Execution of phase separation to distinguish body and Rayleigh waves.
- Truncation of pre-arrival components of S-waves to solve optimal incident angles of body waves.
- Implementation of Rayleigh wavefield inversion with ground Rayleigh components and body wavefield inversion with ground body components and their incident angles.
- Superposition of single-phase body wavefields and Rayleigh wavefields based on the linear elastic characteristics of the half-space of rock media to form total multi-phase wavefields using the linear superposition principle.
- Potential Applications:**
- Seismic exploration and imaging in geophysics - Earthquake monitoring and early warning systems - Subsurface characterization in civil engineering projects
- Problems Solved:**
- Neglect of surface wavefields in existing wavefield inversion methods - Difficulty in accurately separating body and Rayleigh waves - Lack of optimal incident angles for body waves in seismic data processing
- Benefits:**
- Improved accuracy in seismic data interpretation - Enhanced subsurface imaging capabilities - Better understanding of rock media properties
- Commercial Applications:**
Seismic survey companies can utilize this technology for more precise subsurface imaging in oil and gas exploration projects, leading to better decision-making and resource optimization.
- Questions about the Technology:**
1. How does this multi-phase wavefield inversion method improve upon existing seismic data processing techniques? 2. What are the key factors that influence the successful implementation of this technology in real-world seismic exploration projects?
Original Abstract Submitted
the present invention provides a multi-phase wavefield inversion method considering both body waves and surface waves in half-space of rock media to address the deficiency in existing methods that neglect surface wavefields. in the present invention, rayleigh components that strictly satisfy standard elliptic polarization characteristics in a half-space are extracted with snell's law of complex angles and the forward modeling and inversion theory of body waves. then, the phase separation is executed to separate the body and rayleigh waves. the pre-arrival components of s-waves are truncated to solve optimal incident angles of body waves. thus, a rayleigh wavefield inversion is implemented with ground rayleigh components, and a body wavefield inversion is implemented with ground body components and their incident angles. finally, based on linear elastic characteristics of the half-space of rock media, single-phase body wavefields and rayleigh wavefields are superposed to form total multi-phase wavefields with the linear superposition principle.
