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
CN104932011AActive Publication Date: 2015-09-23BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2015-09-23

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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.
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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...

Claims

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