Low-wave-number noise separation method and device for seismic wave data and storage medium
A separation method and seismic wave technology, applied in seismology, measurement devices, seismic signal processing, etc., can solve the problem of low lateral accuracy of seismic imaging images
Active Publication Date: 2019-01-01
PETROCHINA CO LTD +1
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Problems solved by technology
[0005] The embodiment of the present invention provides a low-wavenumber noise separation method for seismic wave data, which can be used to solve the problem that related technologies can only perform low-wavenumber noise separation on seismic wave data in the time-domain seismic wave data volume, and the seismic wave after low-wavenumber noise separation When the data is used for seismic imaging, the lateral accuracy of the obtained seismic imaging image is low
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[0075] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0076] Before explaining the embodiment of the present invention in detail, the nouns, application scenarios, and system architecture involved in the embodiment of the present invention are explained respectively.
[0077] First, the nouns involved in the embodiments of the present invention are introduced.
[0078] Depth Domain Seismic Wave Data Volume
[0079] The depth-domain seismic wave data volume refers to the data set that can reflect the relationship between the seismic wave propagation data in the formation collected in seismic exploration and the formation depth.
[0080] low wave number noise
[0081] Low wavenumber noise refers to the seismic wave data that interferes with the resolution and clarity of the imaging im...
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The invention discloses a low-wave-number noise separation method and device for seismic wave data and a storage medium, and belongs to the technical field of seismic exploration. The low-wave-numbernoise separation method comprises the steps of obtaining a first depth-domain seismic wave data volume processed by an inverse time imaging technology of a target work area, performing data supplementation on the first depth-domain seismic wave data volume according to preset rules to obtain a second depth-domain seismic wave data volume, carrying out iterative processing on the second depth-domain seismic wave data volume through a heat conduction transformation equation to obtain a low-wave-number noise depth-domain seismic wave data volume of the target work area, and then determining a low-wave-number noise removed depth-domain seismic wave data volume according to the second depth-domain seismic wave data volume and the low-wave-number noise depth-domain seismic wave data volume. Thatis to say, iterative processing can be performed on the first depth-domain seismic wave data volume processed through the inverse time imaging technology according to the heat conduction transformation equation so as to remove low-wave-number noise depth-domain seismic wave data in the first depth-domain seismic wave data volume.
Description
technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a method, device and storage medium for separating seismic wave data from low wave number noise. Background technique [0002] Before developing a reservoir block, the seismic wave data collected during the seismic process of the reservoir block can be imaged to obtain the seismic imaging image of the reservoir block, and the seismic imaging image can be used to determine the Oil and gas distribution in reservoir blocks. Among the seismic imaging methods, reverse time imaging technology can effectively solve key problems such as multipath, multiple waves, large dip angles, rotary waves, prism waves, and amplitude-preserving imaging by using the two-way seismic wave equation, and is the mainstream seismic imaging technology. . However, because the direction of the offset point and the propagation path of the wave field in the earthquake is the same, the seismic imagi...
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Login to View More IPC IPC(8): G01V1/36
CPCG01V1/364G01V2210/32G01V2210/324
Inventor 陈可洋
Owner PETROCHINA CO LTD