Making the Transition from Discrete Shot Records to Continuous Wavefields – Real Data Application

Klüver, Tilman; Hegna, Stian; Lima, Jostein

doi:10.3997/2214-4609.201800999

Cited by 6 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the continuous wavefield methodology introduced by Hegna et al (2018a) and Klüver et al (2018), the signal penetration at large depths are similar to conventional data as illustrated in Figure 1 despite the fact that the SPL and SEL levels are significantly lower compared to the conventional data. For the data shown in Figure 1, the peak SPL is reduced by 20-22 dB and SEL is reduced by 8-9 dB (Hegna et al, 2018b).…”

Section: Discussionmentioning

confidence: 56%

See 1 more Smart Citation

Methodology Utilizing Continuous Source and Receiver Wavefields - Signal to Noise Ratio Considerations

Hegna¹,

Klüver²,

Lima³

2019

81st EAGE Conference and Exhibition 2019

Self Cite

View full text Add to dashboard Cite

The peak sound pressure levels (SPL) and the sound exposure levels (SEL) are significantly reduced with the seismic methodology based on the emission and recording of continuous source and receiver wavefields. The peak sound pressure levels are reduced because the emitted energy is spread out in time approaching the properties of white noise, in contrast to conventional marine sources where the emitted wavefield is approaching the properties of a spike. The energy levels emitted by marine seismic sources and its impact on the signal to noise ratio has been discussed in a number of papers. The ability to achieve comparable penetration in depth with the continuous wavefield method despite of significantly reduced peak SPL and SEL levels compared to the conventional marine seismic method is related to several aspects such as attenuation of shot generated noise, improved spatial sampling of source positions, and improved ability to attenuate noise with long continuous records. In this paper we will discuss the phase spectrum of the wavefield emitted by a source, and its influence on the signal to noise ratio after deconvolving the emitted wavefield from the received wavefield.

show abstract

Section: Discussionmentioning

confidence: 56%

“…A novel seismic methodology based on the emission and recording of continuous source and receiver wavefields has been developed (Hegna et al, 2018a;Klüver et al, 2018). One of the main objectives is to reduce the potential environmental impact of marine seismic acquisition.…”

Section: Introductionmentioning

confidence: 99%

Methodology Utilizing Continuous Source and Receiver Wavefields - Signal to Noise Ratio Considerations

Hegna¹,

Klüver²,

Lima³

2019

81st EAGE Conference and Exhibition 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this paper, we describe a novel acquisition and processing method that is based on continuous wavefields on both the source and the receiver side as illustrated in Figure 1. The method was first introduced in HEGNA et al (2018) and KLÜVER et al (2018). The method allows for a source that is constantly emitting energy while moving.…”

Section: Introductionmentioning

confidence: 99%