Channel sequence quality control method for amphibious detection
A water-land and dual-detection technology, which is applied to seismology, measuring devices, instruments, etc. in areas covered by water, can solve the problem of inability to effectively identify the trace sequence reversal of double-detection data, large amplitude of land-based detection, etc. question
Active Publication Date: 2021-07-06
CHENGDU UNIVERSITY OF TECHNOLOGY
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However, due to the serious interference of the double-detection data, the difference in amplitude between the two will be very small, or more seriously, the amplitude of the land-based detection is greater than that of the water-based detection.
In this case, applying this method will not be able to effectively identify the sequence reversal of the double-check data
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[0040] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.
[0041] Such as figure 1 as shown, figure 1 It is a flow chart of a road-sequence quality control method of water and land double inspection in the present invention. The track sequence quality control method of the water and land double check method of the present invention first uses the amplitude ratio of the water and land double checks to identify the double checks with part of the track sequence reversed, and filters out the water and land double checks that cannot be determined by the amplitude ratio of the double checks, and then Through differential operation, integral operation, and amplitude equalization processing, the differential data and integral data of the second channel of the water and land double inspection after amplitude equalizat...
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The embodiment of the invention provides a channel sequence quality control method for amphibious detection. The method comprises the following steps of inputting land and water double-detection original single shot data, calculating the amplitude ratio of the two data of the same stake mark land and water double detection, identifying double detection of partial channel sequence inversion by using a double detection amplitude ratio, filtering out land and water double-detection which cannot be used for judging the channel sequence through the double-detection amplitude ratio, respectively performing derivation and integral operation on the filtered double-detection second channel data, performing amplitude equalization processing on the double-detection second-channel differential data, calculating a similarity coefficient of the double-detection second-channel differential data and the first-channel data, performing amplitude equalization processing on the double-detection second-channel integral data, calculating a similarity coefficient of double-detection second-channel integral data and the first-channel data, and comparing the similarity coefficients obtained by the two calculations to identify the double detection of the residual channel sequence inversion.
Description
technical field [0001] The invention relates to the technical field of quality control of seismic data acquisition for oil and gas exploration, in particular to a track sequence quality control method for both water and land inspections. Background technique [0002] As an important technology for seismic exploration and acquisition in shallow-sea transition zone, water-land double-detection seismic acquisition has a good suppressing effect on the common tremors in offshore seismic exploration. The so-called land and water double detection refers to the integration of the conventional velocity detector and the piezoelectric detector for water, and sinking them together on the seabed for seismic data reception. The seismic signal received by the velocity detector is called land detection data. The seismic signal received by the electric geophone is called hydrodetection data. According to the difference in wave field characteristics of significant waves and ringing disturban...
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IPC IPC(8): G01V1/30G01V1/18G01V1/38
CPCG01V1/307G01V1/306G01V1/181G01V1/3817
Inventor 孙哲陈学华张杰罗鑫吕丙南黎康毅
Owner CHENGDU UNIVERSITY OF TECHNOLOGY