Benefits of broadband seismic data for reservoir characterization. Santos Basin, Brasil

Kneller, Ekaterina; Ferrer, A.; Langlois, Jeremy

doi:10.1190/sbgf2013-200

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The benefits of such an acquisition configuration have been demonstrated in previous seismic imaging (Soubaras and Whiting, 2011;Masclet et al, 2015a) and seismic velocity model building work (Masclet et al, 2015b). The improvement in reservoir characterization conditioned by the wider frequency bandwidth of broadband seismic data has also been shown in previous case studies (Lafet et al, 2012;Reiser et al, 2012;Soubaras et al, 2012;Wallick and Giroldi, 2013;Kneller et al, 2013;and Michel and Sablon, 2016).…”

Section: Introductionmentioning

confidence: 66%

Integration of broadband seismic data into reservoir characterization workflows: A case study from the Campos Basin, Brazil

Kneller¹,

Peiro²

2018

Interpretation

Self Cite

View full text Add to dashboard Cite

Towed-streamer marine broadband data have been key contributors to recent petroleum exploration history, in new frontiers and in mature basins around the world. They have improved the characterization of reservoirs by reducing the uncertainty in structural and stratigraphic interpretation and by providing more quantitative estimates of reservoir properties. Dedicated acquisition, processing, and quality control (QC) methods have been developed to capitalize on the broad bandwidth of the data and allow their rapid integration into reservoir models. Using a variable-depth steamer data set acquired in the Campos Basin, Brazil, we determine that particular care that should be taken when processing and inverting broadband data to realize their full potential for reservoir interpretation and uncertainty management in the reservoir model. In particular, we determine the QC implemented and interpretative processing approach used to monitor data improvements during processing and preconditioning for elastic inversion. In addition, we evaluate the importance of properly modeling the low frequencies during wavelet estimation. We find the benefits of carefully processed broadband data for structural interpretation and describe the application of acoustic and elastic inversions cascaded with Bayesian lithofacies classification, to provide clear interpretative products with which we were able to demonstrate a reduction in the uncertainty of the prediction and characterization of Santonian oil sandstones in the Campos Basin.

show abstract

Section: Introductionmentioning

confidence: 66%

Integration of broadband seismic data into reservoir characterization workflows: A case study from the Campos Basin, Brazil

Kneller¹,

Peiro²

2018

Interpretation

Self Cite

View full text Add to dashboard Cite

show abstract

“…In any case, processing broadband data is complex, the parameters being quite different depending on the frequency range (e.g., operator length). Overall, it is the capability to integrate all these steps in an efficient way that makes broadband surveys able to identify new prospects onshore (Wallick and Giroldi, 2013) and offshore (Firth et al 2014;Kneller et al 2015).…”

Section: Discussion a N D C O N C L U S I O Nmentioning

confidence: 99%

Marine, seabed, and land seismic equipment for broadband acquisition: a review

Mougenot¹

2017

Geophysical Prospecting

View full text Add to dashboard Cite

The broadband capabilities of marine, seabed, and land seismic equipment are reviewed with respect to both the source and the receiver sides. In marine acquisition, the main issue at both ends of the spectrum relates to ghosts occurring at the sea surface. Broadband deghosting requires towing at variable depth to introduce notch diversity or using new equipment like multi‐component and/or low‐noise streamers. As a result, a doubling of the bandwidth from about three to six octaves (2.5–200 Hz) has been achieved. Such improvement is not yet observed for seabed surveys in spite of deghosting being a standard process on the receiver side. One issue may be related to the coupling of the particle motion sensor, particularly at high frequencies. For land acquisition, progress came from the vibrators. New shakers and control electronics using broadband sweeps made it possible to add two more octaves to the low‐frequency signal (from 8 to 2 Hz). Whereas conventional 10 Hz geophones are still able to record such low frequencies, 5 Hz high gain geophones or digital accelerometers enhance them to keep the signal above the noise floor. On the high end of the bandwidth, progress is not limited by equipment specifications. Here, the issue is related to a low signal‐to‐noise ratio due to the strong absorption that occurs during signal propagation. To succeed in enlarging the bandwidth, these improved equipment and sweeps must be complemented by a denser spatial sampling of the wavefield by point–source and point–receiver acquisition.

show abstract

Improving Seismic Reservoir Characterization With Broadband Seismic

Mesdag

Schakel

2015

All Days

View full text Add to dashboard Cite

Broadband acquisition and processing technology has revolutionized seismic acquisition and interpretation. The revolution is not complete however, as we continue to explore how broadband can affect our efforts towards reservoir characterization. In particular, we see the ultimate benefits for reservoir properties with unprecedented bandwidth and accuracy through simultaneous AVO inversion. When performing inversion on broadband seismic data there are some particular properties that need to be considered in different steps of the process. Additionally, careful thought has to be given on how to use inversion QC's to indicate the value of broadband seismic in the inversion stage. We will show some results from our initial experiences in this area.

show abstract

Benefits of broadband seismic data for reservoir characterization. Santos Basin, Brasil

Cited by 3 publications

References 0 publications

Integration of broadband seismic data into reservoir characterization workflows: A case study from the Campos Basin, Brazil

Integration of broadband seismic data into reservoir characterization workflows: A case study from the Campos Basin, Brazil

Marine, seabed, and land seismic equipment for broadband acquisition: a review

Improving Seismic Reservoir Characterization With Broadband Seismic

Contact Info

Product

Resources

About