Method and apparatus of seismic data combination processing of amphibious detector

A seismic data and land geophone technology, which is applied in the fields of petroleum exploration, exploitation and development, can solve problems such as time-consuming calculation, and achieve the effects of small calculation amount, reducing amplitude energy interference and reducing low-frequency noise.

Active Publication Date: 2015-12-02
BGP OF CHINA NAT GASOLINEEUM CORP +1
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Problems solved by technology

This method requires a large number of autocorrelation calculations and maximum variance norm calculations, so the calculations are very time-consuming

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  • Method and apparatus of seismic data combination processing of amphibious detector
  • Method and apparatus of seismic data combination processing of amphibious detector
  • Method and apparatus of seismic data combination processing of amphibious detector

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[0059] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0060] The specific implementation manners of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0061] refer to figure 1 As shown, the method for merging seismic data of land and water geophones in the embodiment of the present application includes the fo...

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Abstract

The invention relates to the technical field of the oil exploration, especially to a method and apparatus of seismic data combination processing of an amphibious detector. According to the method, an optimum calibration factor and an optimum ocean bottom reflection coefficient are calculated directly by using a correlation function algorithm; and the calculated amount is low and the computation speed is fast; and meanwhile, phase processing of seismic data of a land detector and amplitude processing of seismic data of an amphibious detector are carried out in advance to reduce low-frequency noises and the amplitude energy interference, thereby improving the seawater calculation precision. According to the embodiment of the invention, combination processing of the seismic data of the water detector and the seismic data of the land detector is realized rapidly and accurately by means of weighted common point combination processing based on the calculated calibration factor, seawater depth, and bottom reflection function, thereby effectively eliminating the seawater singing multiple interference in the seismic data and improving the signal to noise ratio and resolution ratio of the seismic data.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, exploitation and development, in particular to a method and device for combining and processing seismic data of hydrophones. Background technique [0002] With the development of seismic exploration technology, offshore oil and gas exploration is becoming more and more difficult and deeper, and the requirements for signal-to-noise ratio and resolution of seismic data are also getting higher and higher. OBC (Ocean Bottom Cable, submarine cable) is a combined offshore and land seismic data acquisition technology. The geophone is fixed on the seabed to obtain high-resolution three-dimensional seismic data. In OBC data collection, at least three ships: a source ship, which merely tows the air gun source arrangement, for seismic wave excitation; a receiver ship, which is stationary, connected to a submarine cable, to receive seismic waves; a ship Or several ships, laying submarine cable...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 高少武赵波罗国安黄少卿祝宽海
Owner BGP OF CHINA NAT GASOLINEEUM CORP
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