发明名称 |
Poynting Vector Minimal Reflection Boundary Conditions |
摘要 |
A method for exploring for hydrocarbons, including: simulating a seismic waveform, using a computer, wherein computations are performed on a computational grid representing a subsurface region, said computational grid using perfectly matched layer (PML) boundary conditions that use an energy dissipation operator to minimize non-physical wave reflections at grid boundaries; wherein, in the simulation, the PML boundary conditions are defined to reduce computational instabilities at a boundary by steps including, representing direction of energy propagation by a Poynting vector, and dissipating energy, with the dissipation operator, in a direction of energy propagation instead of in a phase velocity direction; and using the simulated waveform in performing full waveform inversion or reverse time migration of seismic data, and using a physical property model from the inversion or a subsurface image from the migration to explore for hydrocarbons. |
申请公布号 |
US2016223697(A1) |
申请公布日期 |
2016.08.04 |
申请号 |
US201514887621 |
申请日期 |
2015.10.20 |
申请人 |
Vdovina Tetyana;Brytik Valeriy;Anderson John E.;Dickens Thomas A.;Curry William;Marcinkovich Carey M. |
发明人 |
Vdovina Tetyana;Brytik Valeriy;Anderson John E.;Dickens Thomas A.;Curry William;Marcinkovich Carey M. |
分类号 |
G01V1/28;G06F17/16 |
主分类号 |
G01V1/28 |
代理机构 |
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代理人 |
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主权项 |
1. A method for exploring for hydrocarbons, comprising:
simulating a seismic waveform, using a computer, wherein computations are performed on a computational grid representing a subsurface region, said computational grid using perfectly matched layer (PML) boundary conditions that use an energy dissipation operator to minimize non-physical wave reflections at grid boundaries; wherein, in the simulation, the PML boundary conditions are defined to reduce computational instabilities at a boundary by steps including,
representing direction of energy propagation by a Poynting vector, anddissipating energy, with the dissipation operator, in a direction of energy propagation instead of in a phase velocity direction; and using the simulated waveform in performing full waveform inversion or reverse time migration of seismic data, and using a physical property model from the inversion or a subsurface image from the migration to explore for hydrocarbons. |
地址 |
Spring TX US |