Method and device for 3D seismic post-stack data volume splicing
A 3D seismic and splicing device technology, applied in seismic signal processing and other directions, can solve problems such as energy differences and data volume accuracy reduction, and achieve the effect of improving accuracy and accurate results
Active Publication Date: 2018-01-02
PETROCHINA CO LTD
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[0003] Since the 3D seismic post-stack data volumes corresponding to each block may be collected by different companies in different years, there are energy differences in the 3D seismic post-stack data volumes corresponding to different blocks. Decreased precision for contiguous and integrated analysis of post-stack data volumes
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[0025] The data volume involved in the embodiment of the present invention specifically refers to a three-dimensional seismic post-stack data volume.
[0026] figure 1 It is a flowchart of a method for stitching 3D seismic post-stack data volumes provided by an embodiment of the present invention. figure 2 Calibration and interpretation sections of limestone top layers in different blocks provided for the embodiment of the present invention. image 3 A comparison chart of different block amplitude energies provided by the embodiment of the present invention. Figure 4 It is a schematic diagram of amplitude energy equalization of different blocks provided by the embodiment of the present invention. The embodiments of the present invention aim at energy differences in the 3D seismic post-stack data volumes, and provide a 3D seismic post-stack data volume splicing method capable of realizing energy balance between the 3D seismic post-stack data volumes, and the specific steps ...
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Embodiments of the present invention provide a method and device for stitching three-dimensional seismic post-stack data volumes. The method includes: obtaining the closure difference value of the first block and the second block at the splicing position, and correcting any data volume in the first data volume and the second data volume at the splicing position according to the closure difference value; obtaining the uncorrected The energy difference value between the data volume and the corrected data volume; the seismic amplitude energy balance is performed according to the energy difference value, so that the amplitude energy of the uncorrected data volume in the marker layer is consistent with the amplitude energy of the corrected data volume in the marker layer. In the embodiment of the present invention, seismic amplitude energy equalization is performed on two blocks with overlapping data at different positions, so that the amplitude energy of the data bodies of the two blocks collected by different companies in different years in the marker layer remains uniform, avoiding It solves the problem of energy differences in the 3D seismic post-stack data volumes corresponding to different blocks, and improves the accuracy of the contiguous and comprehensive analysis of the 3D seismic post-stack data volumes.
Description
technical field [0001] Embodiments of the present invention relate to the field of petroleum exploration and development, and in particular to a method and device for splicing three-dimensional seismic post-stack data volumes. Background technique [0002] With the continuous deepening of oilfield exploration, it is necessary to collect a large amount of data from different blocks to obtain 3D seismic post-stack data volumes, and perform contiguous and comprehensive analysis of the 3D seismic post-stack data volumes corresponding to each block. [0003] Since the 3D seismic post-stack data volumes corresponding to each block may be collected by different companies in different years, there are energy differences in the 3D seismic post-stack data volumes corresponding to different blocks. The accuracy of contiguous and comprehensive analysis of post-stacked data volumes is reduced. Contents of the invention [0004] Embodiments of the present invention provide a method and...
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IPC IPC(8): G01V1/28G01V1/30G01V1/36
Inventor 敬兵潘文庆邓兴梁于红枫李世银谢恩沈春光刘鑫张正红
Owner PETROCHINA CO LTD