Method and device for picking up seismic wave first arrival

A technology of seismic wave and seismic data volume, applied in the direction of seismic signal processing, etc., can solve the problem of not being able to effectively improve the picking accuracy of the first arrival of seismic waves, and achieve the effect of improving picking accuracy and signal-to-noise ratio

Active Publication Date: 2015-09-23
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0006] The above-mentioned methods focus on theoretical research. Before picking up the first arrivals in the collected seismic data, they do not process the first arrivals in the seismic data to improve the signal-to-noise ratio of the first arrivals, but directly process the seismic data. First arrival picking, which cannot effectively improve the picking accuracy of the first arrival of seismic waves

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  • Method and device for picking up seismic wave first arrival
  • Method and device for picking up seismic wave first arrival
  • Method and device for picking up seismic wave first arrival

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Embodiment Construction

[0046] Embodiments of the present application provide a method and device for picking up the first arrival of seismic waves.

[0047] 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.

[0048] A method for picking up the first arrival of seismic waves provided by an embodiment of the present application will be described in detail below with reference to the accompanying drawings. Although the p...

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Abstract

The invention discloses a method and a device for picking up seismic wave first arrival. The method comprises steps of sorting single-shot records in an obtained first earthquake data body to obtain second earthquake data, superposing each single-shot data in the second earthquake data body with adjacent single-shot records before and after the single-shot data to obtain a third earthquake data body, and picking up the seismic wave first arrival in the third earthquake data body. The method and the device for picking up seismic wave first arrival can improve the pick-up precision of the seismic wave first arrival.

Description

technical field [0001] The present application relates to the technical field of seismic exploration and processing, in particular to a method and device for picking up the first arrival of seismic waves. Background technique [0002] In seismic exploration, the seismic wave that is excited from the shot point and arrives at the receiver point first is called the first arrival wave, and the arrival time of the first arrival wave is called the first arrival time of the seismic wave, which can also be referred to as the first arrival in general. Seismic wave first arrival picking is to determine the boundary moment between the pure noise signal and the superimposed signal of noise and effective wave on the seismic trace. [0003] Picking the first arrival of seismic waves has always been a basic and very important problem. It plays an important role in static correction calculation, and its accuracy directly affects the good or bad of static correction calculation results. I...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/36
Inventor 王海立栗美华宁宏晓于宝华张立军马立新
Owner BC P INC CHINA NAT PETROLEUM CORP
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