Improving quality and safety through the use of a purposely designed truck-mounted Vibroseis for VSP surveys

Dean, Tim; Lane, Darvin; Tulett, John; Puckett, Mark

doi:10.1071/aseg2013ab071

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…To determine the interaction between two vibrators, we used two 267,000 N (60,000 lbf) peak‐force truck‐mounted vibrators (Dean et al . a, b) situated on a compacted gravel pad. The units were initially parked next to each other, and then measurements were made as vibrator 1 was moved away (vibrator 2 remained stationary); the separation between the two vibrators was measured between the front bumpers of the two vehicles (Fig.…”

Section: Methodsmentioning

confidence: 99%

The effects of inter‐vibrator interference on vibrator performance

Dean

Tulett

Lane

2016

Geophysical Prospecting

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The output from the hydraulic vibrators typically used for land seismic surveys is controlled by monitoring the acceleration measured by accelerometers mounted on the reaction mass and baseplate. The considerable energy output by such vibrators, which are coupled with the sensitivity of the accelerometers used, results in crosstalk if more than one vibrator is being used. In this paper, we present the results of a field experiment in which we measured the crosstalk between two adjacent vibrators. We found that the level of crosstalk was approximately ‐20 dB when the vibrators were adjacent but decreased with increasing frequency and separation. This result has implications for measurements of vibrator performance, source‐signature deconvolution, and in particular, estimates of the total energy output by a fleet of vibrators.

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Section: Methodsmentioning

confidence: 99%

The effects of inter‐vibrator interference on vibrator performance

Dean

Tulett

Lane

2016

Geophysical Prospecting

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Where did my energy go? The effects of interference on the output of vibrator fleets

Dean¹,

Tulett

Lane

2015

SEG Technical Program Expanded Abstracts 2015

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The design of optimized broadband vibroseis sweeps

Dean

Quigley²,

MacDonald³

et al. 2016

The Leading Edge

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There is currently much work being done to improve the low-frequency content of land vibroseis data. Although techniques exist for designing sweeps that can extend the bandwidth down to as low as 1 Hz, the inclusion of these frequencies comes at considerable cost, either in the time taken to acquire a sweep or in the reduction of the total sweep energy. We describe the limitations on vibrator performance and how those limitations can be overcome using specialized sweep-design techniques. Perhaps more importantly, we describe how such sweeps can be optimized in terms of maximizing their energy content and verifying their performance.

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Improving quality and safety through the use of a purposely designed truck-mounted Vibroseis for VSP surveys

Cited by 4 publications

References 5 publications

The effects of inter‐vibrator interference on vibrator performance

The effects of inter‐vibrator interference on vibrator performance

Where did my energy go? The effects of interference on the output of vibrator fleets

The design of optimized broadband vibroseis sweeps

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