Quantitative analysis method for collected footprints by three-dimensional observation system
An observation system and a technology for collecting footprints, applied in seismic signal processing, etc., can solve the problems of not quantifying the collection footprints, affecting the design of the observation system and optimizing the accuracy of the collected data, and achieving the effect of ensuring accuracy and continuity
Active Publication Date: 2011-04-20
CHINA PETROCHEMICAL CORP +1
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[0004] The purpose of the present invention is to provide a method for quantitative analysis of footprints collected by a three-dimensional observation system, which overcomes the defects in the prior art that there is no quantitative collection of footprints, which affects the design optimization of the observation system and the accuracy of data collection
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[0022] The present invention will be further described below in conjunction with accompanying drawing:
[0023] attached by figure 2 It can be seen that the present invention inputs the SPS data according to the design plan of the three-dimensional observation system, and calculates the energy change weight coefficient W value of each panel of the three-dimensional observation system; through the obtained distribution of the W value of each panel, qualitative analysis is performed on the footprints collected by the three-dimensional observation system; By calculating and analyzing the difference, mean and mean square error of the W value of each bin, quantitatively analyze the footprints collected by the 3D observation system; compare and select the design plan for the 3D observation system with the smallest footprint, and the specific implementation plan is as follows:
[0024] (1) For the depth of the target layer to be 1500M, the speed of the upper layer to be 2000M / S, and...
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The invention relates to a quantitative analysis method for collected footprints by a three-dimensional observation system, which comprises the following steps of: inputting SPS (Symbolic Programming System) data according to the designed plan of the three-dimensional observation system and calculating the energy change weight coefficient value W of each surface element in the three-dimensional observation system; carrying out qualitative analysis on the collected footprints by the three-dimensional observation system according to value W distribution of all surface elements; carrying out quantitative analysis on the collected footprints by the three-dimensional observation system by calculating and analyzing difference, mean value and mean square error value of the values W of all surface elements; and comparatively selecting the designed plan of the three-dimensional observation system with smallest collected footprint. The invention can be used for carrying out qualitative and quantitative analysis on the collected footprints caused by the three-dimensional observation system and quantitatively comparing the performance difference before and after change of the three-dimensional observation system so that the collected footprints are minimized in the design stage of the observation system, thereby ensuring the accuracy and continuity of the sectional amplitude and providingguarantee for improving the forecast of reservoir stratum, oil pool description and AVO(earthquake amplitude and phase relationship) research precision.
Description
technical field [0001] The invention relates to a method for quantitative analysis of footprints collected by a three-dimensional observation system, belonging to the field of optimization design of three-dimensional observation systems for petroleum seismic exploration, in particular to a method for quantitative analysis of footprints collected by a three-dimensional observation system for seismic acquisition. Background technique [0002] Acquisition footprints refer to the man-made traces left in the process of seismic data acquisition and processing, manifested in the form of regular amplitude change artifacts at different bin positions on seismic sections or slices, which can be understood as the number of times the image has been stacked at each offset. Linear sum after certain weighting. Under normal circumstances, unreasonable observation system design will lead to serious false impressions of acquisition footprints, thereby covering up or weakening the real reflecti...
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IPC IPC(8): G01V1/30
Inventor 周明非碗学俭沈万杰符力耘王广智张松平郭立杰葛雪钦魏伟
Owner CHINA PETROCHEMICAL CORP
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