New vibrator control concept offers industrial use of pseudo-random sweeps in populated areas

Burger, Patrick; Baliguet, Pierre; Naudot, J. C.

doi:10.3997/2214-4609.201410476

Cited by 3 publications

(2 citation statements)

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“…Although bandpass filtering can be thought of as a convolution operation, I have included these methods as a separate category as the generation methods applied are distinct from those described in the previous section where sequences are convolved with waveforms. Burger and Baliguet () (see also Burger, Baliguet and Naudot, ) recognised that the sidelobes on such sweeps would be significant but expected that these would decrease with stacking if different sweeps were used. They also recognised that sweep energy was lower than that of a linear sweep at the same drive level, in their case by 6 dB (∼ 50%), although this varies depending on the bandwidth (the narrower the bandwidth the greater the difference).…”

Section: Pseudorandom Sweep Designmentioning

confidence: 99%

The use of pseudorandom sweeps for vibroseis surveys

Dean¹

2013

Geophysical Prospecting

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A B S T R A C TPseudorandom vibroseis sweeps have long been suggested as an alternative to standard linear sweeps due to their potential for having superior orthogonality, a lower likelihood for infrastructure damage, and increased low-frequency content. In the past, they were also attractive as they have a better autocorrelation shape, although that is less important today. Their use has been limited but the increasing popularity of simultaneous acquisition techniques has rekindled interest as they offer the ability to reduce interference noise. A wide variety of methods for generating pseudorandom sweeps have been developed over the last 45 years. This paper gives an overview of the motivations for their use before classifying and describing the different sweep types. Finally, the sweeps will be compared in terms of their major attributes including their suitability for simultaneous surveys.

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Section: Pseudorandom Sweep Designmentioning

confidence: 99%

The use of pseudorandom sweeps for vibroseis surveys

Dean¹

2013

Geophysical Prospecting

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“…Like the other controllers, VE416 was split into two components communicating by radio (VHF). The Digital Pilot Generator (DPG) in the recorder was able to generate a large choice of digital pilots, including random sweeps (Burger and Baliguet 1992). The Digital Servo Drive (DSD) was placed in each vibrator to perform an auto‐adaptive control of the emitted groundforce.…”

Section: The Mid 1980s–early 1990smentioning

confidence: 99%

How technology drives high‐productivity vibroseis: a historical perspective

Mougenot¹,

Boucard²

2012

Geophysical Prospecting

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The development of high‐productivity seismic recording using the vibroseis method over the last 30 years is treated from a Sercel perspective. The simultaneous use of vibrators has been highly dependent on real‐time field computing capabilities such as those delivered by the correlator‐stackers in the early 1980s. A second step forward in the mid 1980s–early 1990s was related to digital vibrator electronics, which provides efficient management and quality control of fleets of vibrators. However, it was only in the late 1990s with the advent of real‐time satellite positioning (GPS) of these fleets that alternate or simultaneous sweeping was commonly used in production. During the last ten years, thanks to GPS timing, continuous data recording and innovative simultaneous sourcing methodologies, vibroseis has been able to reach unexpected levels of productivity. As a result, the cost per seismic trace has dropped, enabling denser spatial sampling and associated seismic imaging improvement.

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2011

Seismic Acquisition From Yesterday to Tomorrow

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New vibrator control concept offers industrial use of pseudo-random sweeps in populated areas

Cited by 3 publications

References 0 publications

The use of pseudorandom sweeps for vibroseis surveys

The use of pseudorandom sweeps for vibroseis surveys

How technology drives high‐productivity vibroseis: a historical perspective

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