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Shock excitation device for seismic exploration in shallow sea area and use method of shock excitation device

A technology for seismic exploration and shock excitation, which is applied in the directions of seismology, seismology, and measurement devices for areas covered by water, which can solve problems such as difficulty in adjusting the device shape, cable leakage, and device skew, and avoid the suppression effect. , Improve data quality and enhance the effect of low frequency energy

Active Publication Date: 2021-11-23
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A shock device and method for seismic exploration in shallow sea areas mainly includes a source state detection system, a space position control system, an air gun array shock control system, and an operation method for the shock device. The space position control system of the device is composed of multiple steam turbines, and the steam turbine The power is supplied by the towing boat, so it is necessary to install a cable between the towing boat and the shock device. The cable is immersed in seawater. Due to the erosion of seawater, the cable has the risk of leakage, which is easy to cause leakage accidents. When the air gun is fired, The air gun produces a reaction force on the device itself, which can easily lead to the overall skew of the device, and it is difficult to adjust the shape of the device in the later stage

Method used

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  • Shock excitation device for seismic exploration in shallow sea area and use method of shock excitation device
  • Shock excitation device for seismic exploration in shallow sea area and use method of shock excitation device
  • Shock excitation device for seismic exploration in shallow sea area and use method of shock excitation device

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Embodiment 1

[0034] refer to Figure 1-3 In this embodiment, a shock-exciting device for seismic exploration in shallow sea areas includes a casing 1, a number of power components are fixedly connected to the side of the casing 1, the power components are connected to a power generation component in transmission, and the power generation component is electrically connected to a controller ( Not shown in the figure), the inside of the housing 1 is fixedly connected with a diving assembly, and the bottom of the housing 1 is fixedly connected with a number of linear motion assemblies, and the linear motion assembly is slidably connected with an air gun assembly, and the controller is electrically connected to the diving assembly and the linear motion assembly. sexual connection.

[0035] A shocking device of the present application for seismic exploration in shallow sea areas is towed by a towing ship to sail in shallow seas. The seawater has an impact on the power components. Converted into...

Embodiment 2

[0056] refer to Figure 4-5 The difference between this embodiment and Embodiment 1 is that the outlet end of the air gun 14 is fixedly connected with the protective assembly 6, the protective assembly 6 includes a bracket 606, the bracket 606 is sleeved on the side wall of the air gun 14 outlet end, and the bottom of the bracket 606 is rotatably connected with a gear 601, the axis of the gear 601 is perpendicular to the axis of the air gun 14 outlet end, the side of the gear 601 is fixedly connected with a baffle plate 602, the axis of the gear 601 is perpendicular to the axis of the baffle plate 602, the axis of the baffle plate 602 coincides with the axis of the air gun 14 outlet end, and the baffle plate 602 The area is larger than the area of ​​the outlet end of the air gun 14. The gear 601 is meshed with a rack 603 away from the side of the baffle plate 602. The end of the rack 603 is away from the gear 601 and is slidably connected with a connecting sleeve 604. The end o...

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Abstract

The invention relates to the technical field of seismic exploration, in particular to a shock excitation device for seismic exploration in a shallow sea area and a use method thereof.The shock excitation device comprises a shell, a plurality of power assemblies are fixedly connected to the edge of the shell, the power assemblies are in transmission connection with power generation assemblies, the power generation assemblies are electrically connected with a controller, and a diving assembly is fixedly connected to the interior of the shell; and a plurality of linear motion assemblies are fixedly connected to the bottom of the shell, the linear motion assemblies are slidably connected with air gun assemblies, and the controller is electrically connected with the diving assembly and the linear motion assemblies. The shock excitation device is dragged by a traction ship, the depth of the device relative to the sea surface is adjustable, the relative depth of each air gun is adjustable, a three-dimensional air gun array is adopted, the defect that in the prior art, the seismic frequency band is narrow is overcome, low-frequency energy is improved, a seismic source has higher penetrating power, and therefore the quality of data collected by an ocean bottom seismograph (OBS) is improved, in addition, the device does not need a traction ship to provide electric energy and is safe and energy-saving.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a shock-exciting device for seismic exploration in shallow sea areas and an application method thereof. Background technique [0002] Seismic exploration refers to the geophysical exploration method in which the elastic waves caused by artificial excitation use the difference in the elasticity and density of the underground medium to infer the nature and shape of the underground rock formations by observing and analyzing the propagation law of the seismic waves generated by artificial earthquakes in the ground. Seismic exploration is the most important method in geophysical exploration and the most effective method for solving oil and gas exploration problems. It is an important means of surveying oil and natural gas resources before drilling, and is also widely used in coal field and engineering geological exploration, regional geological research and crustal researc...

Claims

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Application Information

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IPC IPC(8): G01V1/137G01V1/38
CPCG01V1/137G01V1/3861Y02A90/30
Inventor 唐文
Owner XI'AN PETROLEUM UNIVERSITY
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