Optimum coupling and matching method for receiving seismic data by special rectifier

A coupling detection and optimal coupling technology, applied in the direction of seismic signal receivers, etc., can solve the problems of limited function of geophones, lack of versatility, increased cost, etc., and achieve the effect of improving resolution
CN1651934AInactive Publication Date: 2005-08-10ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2005-08-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a method for implementing optimum coupling and matching with earth surface by utilizing special coupling detector. Said method includes the following steps: in accordance with work area earth surface medium parameter designing a detector base which can be coupled with earth surface instead of detector tail cone, in the same receiving arrangement utilizing the seismic detector with concrete base and conventional detector with ferruginous tail cone which is positioned on adjacent channel to make observation under the identical condition so as to obtain the comparable seismic records, using the record of detector with concrete base which is obtained under the identical condition as desired output of record of conventional detector with ferruginous tail cone, utilizing principle of minimum square filter to solve optimum coupling matching filter factor, then making the seismic records obtained by all the conventional coupling detectors undergo the process of matching filtering treatment so as to obtain optimally-coupled and received signal.
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Description

technical field

[0001] The invention relates to the field of seismic exploration, in particular to an optimal coupling and matching method for receiving seismic data by using a special geophone. Background technique

[0002] In the past, the geophone was fixed after the manufacturer produced it. It is a universal device, that is, it can be used regardless of the surface geological conditions. In particular, the rigid material of the iron tail cone of the geophone forms a strong wave impedance (the product of density and velocity) interface with the soft ground. According to the reflection and scattering theory of seismic waves, this strong wave impedance interface will attenuate the energy of reflected seismic waves and lose their frequency.

[0003] If a special coupled geophone suitable for the surface geological conditions of the work area is really produced, the role of the geophone will be limited and the cost will rise sharply. Because the geophone cannot only be use...

Claims

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