1887

Abstract

Summary

Acquiring low frequency data using Vibroseis technology can be very beneficial for land seismic exploration. Unfortunately, because of physical limitations in vibrator mechanical and hydraulic systems, most conventional vibrators cannot produce sufficient ground force at low frequencies. To successfully push Vibroseis acquisition bandwidth into the lowest frequency range (< 5 Hz), the vibrator output force must be significantly increased. An improved design of vibrator actuator becomes necessary. This paper attempts to present a newly designed low frequency vibrator. Experimental results show with this new low frequency vibrator the vibrator ground force at low frequencies is significantly improved. Downhole data at the depth of 7500 ft (2288 m) demonstrate that a measurable force-energy from 0.5 Hz to 131 Hz (8 octaves) is achieved with this new generation low frequency vibrator.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201414416
2015-11-16
2020-04-08
Loading full text...

Full text loading...

References

  1. Baeten, G.
    [2011] Method and system for performing seismic surveys with a low frequency sweep. US Patent Application 2011/0205842 A1.
    [Google Scholar]
  2. Bagaini, C.
    [ 2006] Enhancing the low-frequency content of Vibroseis data: 76th SEG Annual Meeting, Expanded Abstracts, 75–79.
    [Google Scholar]
  3. [2008] Low-frequency Vibroseis data with maximum displacement sweeps. The Leading Edge, 27, 582–591.
    [Google Scholar]
  4. Sallas, J.
    [2010] How do hydraulic vibrators work? A look inside the black box. Geophysical Prospecting, 58, 3–17.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201414416
Loading
/content/papers/10.3997/2214-4609.201414416
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error