Surface-layer structure investigation method and apparatus thereof

Abstract

Embodiments of the invention disclose a surface-layer structure investigation method and an apparatus thereof. The method comprises the following steps of laying a small refraction receiving arrangement of each shot point in a work area artillery observation system, wherein a midpoint position of the small refraction receiving arrangement of each shot point is a shot point position, and the small refraction receiving arrangement of each shot point and an artillery receiving arrangement of the shot point possess at least one superposed receiving channel; for each shot point in the artillery observation system, stimulating a seismic wave at the shot point, using the artillery receiving arrangement of the shot point to acquire an initial artillery data set, and using the small refraction receiving arrangement of each shot point to acquire a small-refraction initial data set; based on the initial artillery data set and the small-refraction initial data set, calculating initial data of the shot point; and based on the initial data of each shot point in the artillery observation system, calculating a surface-layer structure parameter of a work area.

Description

technical field [0001] The present application relates to the technical field of oil and gas, in particular to a surface structure investigation method and device. Background technique [0002] Seismic exploration is to generate seismic waves through artificial excitation, and to explore the underground geological conditions by studying the propagation laws of seismic waves in strata with different elasticity. The main process of seismic exploration can be divided into three stages: seismic data acquisition, seismic data processing and seismic data interpretation, and finally get geological results. [0003] Seismic data collection is to generate seismic waves by artificial methods, such as using explosives as the source, detonating explosives to generate seismic waves, and then using seismic receiving instruments to record ground vibration signals caused by seismic waves reflected back from the ground, and obtaining corresponding geological profiles through calculation and ...

AI Technical Summary

Problems solved by technology

The micro-logging method has higher precision than the small refraction method, but the implementation of micro-logging consumes huge manpower and material resources, the cost is high, and it is difficult to deploy a large number of

[0009] The cannon first arrival method is a tomographic inversion method using the seismic single-shot first arrival wave information obtained by conventional two-dimensional seismic exploration. Its advantage lies in the large investigation depth, which can reach hundreds of meters. track distance, survey accuracy is limited

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