Invention Grant
- Patent Title: Localized seismic imaging using diplets
- Patent Title (中): 使用腓肠的局部地震成像
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Application No.: US12029842Application Date: 2008-02-12
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Publication No.: US08010293B1Publication Date: 2011-08-30
- Inventor: Chengbin Peng , Ying Hu , Jianming Sheng
- Applicant: Chengbin Peng , Ying Hu , Jianming Sheng
- Applicant Address: US TX Houston
- Assignee: WesternGeco L. L. C.
- Current Assignee: WesternGeco L. L. C.
- Current Assignee Address: US TX Houston
- Main IPC: G01V1/00
- IPC: G01V1/00

Abstract:
Methods, systems, and software for determining a seismic image of a target area are disclosed. The target area is defined by a volume of interest (VOI). The method includes receiving an unmigrated set of spatial wavelets, wherein the unmigrated set of spatial wavelets include unmigrated spatial wavelets in the time domain. The method includes receiving a first migrated set of spatial wavelets, wherein the first migrated set of spatial wavelets includes migrated spatial wavelets in the depth domain. Each spatial wavelet comprises information about spatial location, orientation, amplitude, wavelet, acquisition configuration, and coherency. Each spatial wavelet in the unmigrated set of spatial wavelets is linked to a spatial wavelet in the first migrated set of spatial wavelets. The method includes selecting spatial wavelets from the first migrated set of spatial wavelets that are within or slightly outside the VOI; selecting a target set of spatial wavelets, the target set of spatial wavelets including spatial wavelets from the unmigrated set of spatial wavelets that are linked to the selected spatial wavelets from the first migrated set of spatial wavelets; migrating the target set of spatial wavelets using one or more of a new velocity model to create a second migrated set of spatial wavelets; and synthesizing the second migrated set of spatial wavelets into a new seismic volume and synthesizing the second migrated set of spatial wavelets into one or more new seismic gathers.
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