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Method and apparatus for land based seismic data acquisition

A seismic data and terrestrial technology, applied in the field of seismic exploration, can solve problems such as line-of-sight obstacles, data rate limitations, and range limitations

Active Publication Date: 2007-04-11
FAIRFIELD INDUSTRIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Of course, such systems are limited by the characteristics of radio transmission, such as radio frequency spectrum license restrictions, range limitations, line of sight obstructions, antenna limitations, data rate limitations, power limitations, etc.

Method used

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  • Method and apparatus for land based seismic data acquisition
  • Method and apparatus for land based seismic data acquisition
  • Method and apparatus for land based seismic data acquisition

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Embodiment Construction

[0035] In the detailed description of the present invention, the same symbols are used to designate the same parts everywhere. To simplify the description, various items of equipment such as fasteners, accessories, etc. may be omitted. However, those skilled in the art will appreciate that such conventional equipment can be employed at will.

[0036] Referring to Figure 1, a seismic data acquisition system or enclosure 10 of the present invention is shown. The housing 10 consists of an outer shell 12 having a partition 14 defining an interior compartment 16 . Housing 12 is preferably sealed to prevent water, dust or other debris from entering compartment 16. Housed within compartment 16 are at least one geophone 18 , a clock 20 , a power source 22 , a control device 23 and a seismic data recorder 24 . In this embodiment, the cabinet 10 is self-contained such that the power supply 22 meets all of the power requirements of the cabinet 10 . Likewise, the control unit 23 provi...

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Abstract

A seismic exploration method and unit comprised of continuous recording, self-contained wireless seismometer units or pods. The self-contained unit may include a tilt meter, a compass and a mechanically gimbaled clock platform. Upon retrieval, seismic data recorded by the unit can be extracted and the unit can be charged, tested, re-synchronized, and operation can be re-initiated without the need to open the unit's case. The unit may include an additional geophone to mechanically vibrate the unit gauge the degree of coupling between the unit and the earth. The unit may correct seismic data for the effects of crystal aging arising from the clock. Deployment location of the unit may be determined tracking linear and angular acceleration from an initial position. The unit may utilize multiple geophones angularly oriented to one another in order to redundantly measure seismic activity in a particular plane.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application Serial No. 10 / 448,547, filed May 30,2003. Background technique [0003] The present invention relates to the field of seismic exploration. In particular, the present invention relates to a method and apparatus for seismic exploration, and in particular to a complete land-based or sea-deployable geophone system. [0004] Seismic exploration typically utilizes a seismic source to generate an acoustic signal that propagates into the earth and is partially reflected by subsurface seismic reflectors (ie, interfaces between subsurface lithologic or fluid layers characterized by differing elasticities). The reflected signal (referred to as a "seismic reflection") is detected and recorded by seismic receivers located at or near the surface, thereby forming a subsurface seismic survey. It is thus possible to process the recorded signal or seismic energy data to derive in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/16G01V1/24G01V1/18
CPCG01V2200/12G01V1/16G01V1/24
Inventor 克利福德·H·雷格伦·D·菲塞勒哈尔·B·海古德
Owner FAIRFIELD INDUSTRIES INC
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