Developments in vibrator control

Boucard, D.; Ollivrin, Gilles

doi:10.1111/j.1365-2478.2009.00848.x

Cited by 16 publications

(8 citation statements)

References 8 publications

(7 reference statements)

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“…They also suggested that a more suitable model to describe the vibrator–ground should be developed to understand the interaction between the vibrator and the ground. Boucard and Ollivrin (2010) provided a digital model of the vibrator to compute 10 states of the vibrator model related together by physical equations. An equivalent model was developed by Lebedev et al (2006) to analyze the nonlinear contact parameters based on the observed and predicted harmonic levels.…”

Section: Introductionmentioning

confidence: 99%

A model for the vibrator–ground coupling vibration and the dynamic responses under excitation of sweep signal

Huang

Lian

et al. 2019

Advances in Structural Engineering

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To analyze the behavior of the vibrator–ground coupling vibration, a model containing equivalent dynamic stiffness and equivalent dynamic damping to describe the interaction between the vibrator and the ground is established based on half-space theory. According to load cell test, this model shows a good agreement with the experimental data. Dynamic responses of the structure are analyzed on displacement, velocity, acceleration, and ground force. Results show that the stroke and pump displacement are main constraints that limit the bandwidth of vibrator toward low frequency, and the stroke of conventional vibrator is not long enough to achieve lower frequency. Analysis of velocity response indicates that with the increase of frequency, a larger mass results in a lower velocity under external force. The influence of the ground acting on the baseplate is limited, and the acceleration of the baseplate is determined by its own mass beyond 80 Hz. Analysis of ground force shows that the response of the structure can be divided into three stages. The reaction mass, the baseplate, and the ground play different roles in dominating the ground force at different frequency bands.

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Section: Introductionmentioning

confidence: 99%

A model for the vibrator–ground coupling vibration and the dynamic responses under excitation of sweep signal

Huang

Lian

et al. 2019

Advances in Structural Engineering

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“…In 1988, the first digital servo‐controlled vibrator electronics based on a numerical model of the vibrator and of the ground below the baseplate was introduced by Sercel (VE416; Garotta 1990; Boucard and Ollivrin 2010; Fig. 2).…”

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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“…This method is simple and practical and widely used in the industry (Wei et al, 2010; Ziolkowski, 2010). Many researchers have demonstrated the complexity between the vibrator and ground (Dean et al, 2015; Ley et al, 2006; Martin and Jack, 1990) and suggested that the weighted sum method is not a good estimation of the ground force (Boucard and Ollivrin, 2010; Rowse and Tinkle, 2016; Saragiotis et al, 2010; Wei, 2009b). So, some approaches are developed to describe the interaction of vibrator-ground system and improve the ground force, providing many innovative perspectives.…”

Section: Introductionmentioning

confidence: 99%

Modeling of energy transfer and parameter effects on it of a vibrator-ground system

Wen

Huang

et al. 2020

Advances in Structural Engineering

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The amount of energy transferred to the ground truly represents the performance of the seismic vibrator. So, it is crucial to investigate the transfer of energy in the vibrator-ground system and how parameters affect it. For this purpose, a model of vibrator-ground system considering frequency change is developed based on half-space theory, and methods of calculating energy transfer is innovatively proposed. Results show that the total energy done by the hydraulic force on the vibrator-ground system in the frequency band of 3–200 Hz is 3.156×105 J, and 9.11% of the energy is transferred to the ground. In addition, effects of structural parameters and soil parameters on energy transfer are carried out. It is concluded that lightweight reaction mass can significantly increase the total energy, but heavier reaction mass generates more ground energy. Baseplate with small mass not only helps the vibrator to transmit energy uniformly but also generates more ground energy above 100 Hz. Larger baseplate area can improve the baseplate-ground interaction to transfer more energy to the ground. For the effects of soil on energy transfer, the ground energy in low-frequency band is mainly dominated by soil elastic modulus, and both elastic modulus and density of soil have great effects on energy transferred to ground at high frequencies.

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Developments in vibrator control

Cited by 16 publications

References 8 publications

A model for the vibrator–ground coupling vibration and the dynamic responses under excitation of sweep signal

A model for the vibrator–ground coupling vibration and the dynamic responses under excitation of sweep signal

How technology drives high‐productivity vibroseis: a historical perspective

Modeling of energy transfer and parameter effects on it of a vibrator-ground system

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