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Quality control method for minor tremor positioning precision

A quality control method and positioning accuracy technology, applied in the field of exploration and surveying, which can solve the problems of no quality control, production verification or comprehensive analysis, and no one knows whether the test results are correct or not.

Active Publication Date: 2015-11-25
CHINA UNITED COALBED METHANE +1
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Problems solved by technology

This situation is caused because there is no quality control, no one knows whether the test results are correct, or these results will take time to production verification or comprehensive analysis

Method used

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  • Quality control method for minor tremor positioning precision
  • Quality control method for minor tremor positioning precision
  • Quality control method for minor tremor positioning precision

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Embodiment Construction

[0047] In order to make the technical solution of the present invention easier to understand, the technical solution of the present invention will be described clearly and completely by means of specific embodiments in conjunction with the accompanying drawings. It should be noted that the embodiments described here are only some of the embodiments of the present invention, rather than all implementations of the present invention. The embodiments are only illustrative, and their role is only to provide examiners and the public with an understanding of the content of the present invention. A more intuitive and clear manner, rather than a limitation to the technical solution of the present invention. On the premise of not departing from the concept of the present invention, all other implementations that can be thought of by those skilled in the art without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all be...

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Abstract

The invention belongs to the technical field of natural disasters, natural resources and environment prospecting, more particularly, to a quality control method for minor tremor positioning precision. The method comprises the following steps: marking positions according to a hypocentral location coordinate obtained from minor tremor monitoring and a measuring point coordinate; using given speed parameters and underground space structure information to obtain the travel time between the two; conducting NMO treatment on minor tremor signals to obtain a gather array after correction; taking the amplitude of sub-waves in a minor tremor before lamination as a benchmark to mark the amplitude of sub-waves after lamination. If the two are consistent, it proves that a good lamination effect has been achieved, or rather to say that a minor tremor has been precisely positioned. If not, it proves poor precision. The technical solutions of the method can effectively control the positioning precision of a minor tremor.

Description

technical field [0001] The invention belongs to the field of natural disaster, resources, environment and other exploration and survey fields, and in particular relates to a quality control method for microseismic positioning accuracy. Background technique [0002] Microseismic positioning technology has been widely used in oil and gas field development, geothermal field development, mine safety monitoring, earthquake prevention, and national defense security, such as hydraulic fracturing positioning technology. The basic principle of microseismic positioning technology is to obtain the location of the source signal after inversion based on the microseismic time series signals collected by sensors installed at multiple monitoring stations (or monitoring points) on the ground or underground. There are many methods of inversion technology, each method has its advantages and disadvantages, and the inversion results have great differences under different conditions. In actual w...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/36
Inventor 薛爱民吴建光艾建华张平刘辉李兴锋舒律
Owner CHINA UNITED COALBED METHANE
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