Comprehensive Test and Evaluation Method of Geophone Dynamic Performance

Abstract

The invention provides a detector dynamic performance integrated testing and evaluating method. The detector dynamic performance integrated testing and evaluating method comprises steps of 1, performing the reception linear test and the ground noise test; 2, performing the pulse signal test and the weak signal reception ability test; 3, performing the anti-interference capability test and the actual seismic signal reception capability test; 4, performing the field test to verify the reception performance of the detector by comparing actual seismic tests; and 5, performing the integrated performance evaluation of the detector. The detector dynamic performance integrated testing and evaluating method is closely integrated with the actual data, and the effect is more obvious. It is an effective method to preferably select the detector according to the seismic exploration demand.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for comprehensive testing and evaluating the dynamic performance of a geophone. Background technique [0002] A geophone is a device that converts ground motion into an electrical signal. It is mainly used to receive artificially excited seismic waves in petroleum seismic exploration. A geophone with excellent performance is critical to improving the accuracy of seismic exploration. This is why the current seismic exploration The reason why a wide variety of geophones has been developed in the field. Therefore, it is very important to test and evaluate the geophones, and to select the appropriate geophones according to the requirements of seismic exploration. [0003] There are two commonly used geophone test methods: one is the direct test method, which tests the performance of the geophone on a shaking table. This method requires the shaking table and the...

AI Technical Summary

Problems solved by technology

[0006] (1) The technical indicators based on the basis are relatively simple, mainly static indicators, which are measured at a certain frequency point, and the data measured at a certain frequency point cannot fully represent the performance of the seismic wave in the entire frequency band. Therefore, static Indicators have a certain deviation

[0007] (2) It is difficult to perform signal tests that can reliably compare fidelity, signal-to-noise ratio, resolution, and effective dynamic range

Because this requires weak signal test, impulse signal test, background noise test and actual seismic signal test, which needs to be tested on a vibration isolation table with high precision in the laboratory, which has very high requirements for environmental noise. environment cannot be completed

[0008] Due to the above reasons, conventional geophone testing and evaluation methods cannot evaluate various types of geophones, so it is difficult to optimize geophones according to different seismic exploration requirements.

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