Unlocking the full potential of Atlantis with OBS nodes

Howie, James; Mahob, Patrice Nsoga; Shepherd, David; Beaudoin, Gerard

doi:10.1190/1.3054824

Cited by 11 publications

(2 citation statements)

References 12 publications

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“…This scenario is becoming more feasible with the advent of receivers that are deployed via autonomous underwater nodes and wireless landbased geophones (Howie et al, 2008;Savazzi and Spagnolini, 2008). Note that our approach is not restricted to fixed geometries and can also be applied to streamer data acquisition utilizing the continuity of the waveforms across adjacent shot gathers.…”

Section: Seismic Data Interpolation By Sparse Recoverymentioning

confidence: 98%

Improved wavefield reconstruction from randomized sampling via weighted one-norm minimization

2013

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Missing-trace interpolation aims to recover the gaps caused by physical obstacles or deliberate subsampling to control acquisition costs in otherwise regularly sampled seismic wavefields. Although transform-domain sparsity promotion has proven to be an effective tool to solve this recovery problem, current recovery techniques do not fully utilize a priori information derived from the locations of the transform-domain coefficients, especially when curvelet domain sparsity is exploited. We use recovery by weighted one-norm minimization, which exploits correlations between the locations of significant curvelet coefficients of different partitions, e.g., shot records, common-offset gathers, or frequency slices of the acquired data. We use these correlations to define a sequence of 2D curvelet-based recovery problems that exploit 3D continuity exhibited by seismic wavefields without relying on the highly redundant 3D curvelet transform. To test the performance of our weighted algorithm, we compared recoveries from different data sorting and partitioning scenarios for a seismic line from the Gulf of Suez. These tests demonstrated that our method is superior to standard l 1 minimization in terms of antialiasing capability, reconstruction quality and computational memory requirements.

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Section: Seismic Data Interpolation By Sparse Recoverymentioning

confidence: 98%

Improved wavefield reconstruction from randomized sampling via weighted one-norm minimization

2013

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“…The Atlantis 2006 OBN survey was the first production scale, deepwater, 3D node survey in the world with 1600 nodes deployed and recovered in up to 7,000 ft of water ( Beaudoin and Ross, 2007). The OBN data has provided image improvements in both extra-salt and subsalt to improve confidence in development drilling (Howie et al, 2008). The next step for OBN has been acquisition of a time-lapse (4D) node survey over Atlantis in mid-2009.…”

Section: Seismic -Ocean-bottom-nodesmentioning

confidence: 99%

Unlocking Atlantis: An Integrated Approach to Reservoir Management of a Giant Subsalt Field

Bartlett

Singh

Howie

et al. 2010

Proceedings of Offshore Technology Conference

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Atlantis is a giant oil field with challenges that require a multi-disciplinary and phased approach to reservoir development. Initial development focused on the better-imaged extra-salt segment of the structure after eight appraisal penetrations revealed over a 1,500 ft oil column contained in several high quality thick pay sands. Signals of the reservoir complexity that would be associated with Atlantis were seen from the beginning. The early wells found variable fluid contacts, fluid compositional variations, large previously undetected faults, and what turned out to be perched water. Development drilling continued while the facilities were being fabricated. The drilling results strengthened confidence that there were large inplace resources but heightened concerns about complexity. In response, the development plan was modified to include ocean-bottom-seismic, downhole-flow-control completions, and a second production drill center. Initial reservoir performance revealed sub-seismic baffles that resulted in lower stabilized well productivity and more complex compartmentalization than expected. Integrated analyses of static and dynamic data enabled the integrated team to demonstrate that recovery per well was similar to pre-drill expectation and modification to the development plan would allow sustained production growth. Challenges going forward include appraisal and development of remaining segments of the field to effectively grow production and extend production plateau, and efficient operation of the wells, subsea architecture and production facilities.

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The BP OBS node experience: deepening the reach of ocean bottom seismic

Beaudoin¹,

Ross²

2008

SEG Technical Program Expanded Abstracts 2008

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Unlocking the full potential of Atlantis with OBS nodes

Cited by 11 publications

References 12 publications

Improved wavefield reconstruction from randomized sampling via weighted one-norm minimization

Improved wavefield reconstruction from randomized sampling via weighted one-norm minimization

Unlocking Atlantis: An Integrated Approach to Reservoir Management of a Giant Subsalt Field

The BP OBS node experience: deepening the reach of ocean bottom seismic

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