Method for rapidly processing large-area three-dimensional seismic data body
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A three-dimensional seismic and seismic data technology, applied in the field of seismic exploration data processing and interpretation, can solve the problems of slow and unsatisfactory data processing efficiency, and achieve the effect of shortening waiting time, improving efficiency, and improving operation time.
Inactive Publication Date: 2013-06-19
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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[0005] The above-mentioned technical solutions can improve the processing efficiency to a certain extent before pre-stack time migration processing, but in the pre-stack and stacking stages, the data processing efficiency is still very slow, which is far from meeting the needs of production, so it is urgent to develop a A new processing technology method can make full use of node resources, improve data I / O efficiency, minimize the idle rate of nodes, realize fast and efficient processing of large-area 3D data volumes, and meet the needs of seismic exploration at the present stage
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[0038] The best implementation mode of the present invention is as follows:
[0039] Taking part of the continuous 3D data on the right bank of the Amu Darya River as an example, the data includes beamlines SW41~108 excited by explosive sources and vibrators, with a total of 27472 shots, 46863423 channels, 877641 bins, and a coverage area of 548.5Km2 , the pre-stack data capacity is 359GB.
[0040] Pre-stack data processing stage:
[0041] During the processing of the 41st to 112th beamlines of the 3D contiguous Amu Darya River, considering that there are two types of source data that require some separate processing such as pre-stack noise suppression, wavelet shaping, etc., a total of 26 processing units are divided into controllable There are 18 processing units for seismic source data and 8 processing units for explosive source data, with an average data capacity of 13.8GB, the maximum data is 21.1GB, and the minimum data is 1.8GB. In actual processing, if there are 26...
Embodiment 2
[0048] As the best implementation mode of the present invention: the processing method subdivides the large-area three-dimensional data body into small processing units, and realizes simultaneous I / O and calculation of multiple nodes through flexible use of the global variable parameter database, thereby maximizing data processing efficiency . Including seismic data processing high-efficiency processing in the pre-stack stage, efficient processing in the stacking stage, and efficient processing in the pre-stack time migration stage.
[0049] (1) Efficient processing technology in the pre-stack stage
[0050] Efficient processing of seismic data in the pre-stack stage includes two aspects. On the one hand, pre-stack data is subdivided into smaller processing units for fast processing; on the other hand, surface consistent amplitude and deconvolution processing.
[0051] The implementation of subdivision processing unit job parallel processing requires the following steps:
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Abstract
The invention discloses a method for rapidly processing a large-area three-dimensional seismic data body, relating to the technical field of seismic exploration data processing and interpretation. The method comprises seismic data pre-stack stage processing, seismic data stack stage processing and seismic data pre-stack time migration stage processing. The seismic data pre-stack stage processing comprises the following steps of: subdividing pre-stack data into a plurality of processing units; and realizing surface consistent amplitude and convolution processing in the event of processing the plurality of subdivided processing units. The seismic data stack stage processing comprises the following steps of: extracting a CMP (Common Middle Point) trace gather; stacking subdivision dynamic correction; and processing residual static correction. The seismic data pre-stack time migration stage processing comprises the following steps of: according to offset requirements and available resources, selecting an offset distance; blocking data; calculating nodes; and, defining and operating the nodes and I / O (Input / Output) resources. According to the method, the node resources can be effectively utilized; the data I / O efficiency is improved; the node idleness ratio is reduced maximally; and the efficiency for processing large-area three-dimensional seismic data can be multiplied.
Description
technical field [0001] The invention relates to the technical field of seismic exploration data processing and interpretation, in particular to a fast processing method for large-area three-dimensional seismic data volumes. Background technique [0002] With the advancement of CPU technology, high-speed network technology, parallel programming and other technologies, the computer cluster system has become a seismic data center due to its characteristics of low user investment, short development cycle, low system cost, easy upgrade, good scalability, and high resource utilization. As for the main hardware platform, PC-LINUX cluster is the fastest growing application in seismic data processing. The main characteristics of the development of the seismic data processing software platform are: more convenient to use, easier to operate, higher work efficiency and stronger functions. The corresponding hardware and software platform for seismic data processing has greatly impro...
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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28
Inventor 杨忠民刘晓兵孙建库李德珍吴松翰欧居刚杜佳骏
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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