Method for controlling field earthquake prospecting collection process

Abstract

A method for controlling outdoor collection process of seismic prospecting includes confirming physical point with qualified construction as standard physical point by making analysis through on-site substation and computer software , using seismic wave parameter obtained from seismic prospecting on purpose layer as comparison standard value, using result of comparing physical point record without on-site substation detection to comparison standard value as evaluation evidence on physical point record without on-site substation then using said standard physical point and value as well as evidence to evaluate construction and record quality of seismic collection.

Description

technical field [0001] The invention relates to seismic exploration technology, in particular to a control method for the field acquisition process of seismic exploration. Background technique [0002] In the traditional seismic exploration technology, the field acquisition process of seismic data is a complex and laborious process, with relatively large one-time investment, and the seasonality of construction is strong. If after the construction is completed and the collected data is processed, it is found that there is a problem with the quality of the collection, and the collection is repeated, which will result in a large investment and a long time, which will greatly affect the exploration efficiency and cycle. Therefore, the construction quality control during the acquisition process is the most important link in the field acquisition of seismic exploration, especially the evaluation of seismic records is the key. This has traditionally been done by on-site manual eva...

AI Technical Summary

Problems solved by technology

Since the seismic records vary greatly in different regions, no scientific quantification standard can be found, so in practical application, the effect is not good

[0006] At present, there is no better technical solution in this area at home and abroad, and the evaluation is done manually or from the seismic section after simple superimposition of seismic records by computer.

The shortcomings of manual evaluation are obvious. One of the main defects of on-site profile evaluation is timeliness. After the on-site profile processing is completed, the field acquisition has ended and the seismic array has been put away. It is necessary to re-arrange, the workload is heavy, and time is wasted

At the same time, a common defect of the above methods is that they are not combined with field construction site quality inspection, and it is difficult to distinguish the reasons for the poor quality of seismic records.

In addition, due to the large scope of seismic field construction, a seismic array has hundreds, thousands, or even as many as 10,000 channels, which can be as long as 10 kilometers; if it is a 3D seismic survey, the horizontal distance can reach 2 kilometers, which is nearly 20 square kilometers. The scope of the construction quality control is a relatively big problem

Only a small number of spot checks and individual side stations can be used, and a comprehensive inspection cannot be achieved. Therefore, optimizing the control of the field acquisition process for seismic exploration, that is, monitoring the quality of seismic acquisition construction has always been an important subject to be developed and researched.

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