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• W1994996821 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2009Independent simultaneous sweeping in Libya‐full scale implementation and new developmentsAuthors: Dave HoweMark FosterTony AllenIan JackDave BudderyAlbert ChoiRay AbmaTed ManningMike PfisterDave HoweSearch for more papers by this author, Mark FosterSearch for more papers by this author, Tony AllenSearch for more papers by this author, Ian JackSearch for more papers by this author, Dave BudderySearch for more papers by this author, Albert ChoiSearch for more papers by this author, Ray AbmaSearch for more papers by this author, Ted ManningSearch for more papers by this author, and Mike PfisterSearch for more papers by this authorhttps://doi.org/10.1190/1.3255044 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract At the 2008 SEG convention in Las Vegas (Howe, Allen, Jack et al SEG 2008) we reported on a proof of concept of a new acquisition technique called ISS (Independent Simultaneous Sweeping). This paper describes a full scale implementation of this method in Libya, where it is being used to acquire a very large exploration land 3D survey in excess of 13,000 sq.kms Recent developments in recording systems allow for a recording spread to be continually active, which we refer to as continuous recording, although it may be more accurately described as recording of a set of contiguous records. This removes the necessity for real time synchronization of sources and recording systems. As long as the continuously recorded data and the source initiation can both be linked to the same time standard, (e.g. GPS time) the traditional shot records can be combed from the continuous dataset at any later stage. We have used the benefit of continuous recording to operate a large number of sources simultaneously on a large recording spread thereby greatly improving the productivity of land acquisition. In this method all vibrators work independently without any attempt to synchronize their activity, and the underlying principle is that all interference between sources can be treated as ‘noise’. The noise is randomized as much as possible, and a standard suite of noise removal tools is used during processing. The standard noise removal techniques are very effective, however, we recommend the paper by Abma et al which reports inversion techniques that remove the noise in a more deterministic manner, and which may be beneficial for development quality surveys. In our simple and robust approach, there is no apparent limit to the number of sources that can be operated simultaneously, there is no waiting time for any vibrator and very little central control or communication is required. It is very well suited for work in many environments including difficult terrain, where vibrator manoeuvering is slow, or where radio communication is challenged. We demonstrate that this technique can deliver very high fold data at high efficiencies, such that it enables land 3D to be acquired for exploration purposes at costs comparable to marine exploration surveys. We also report the initial results from a field trial of a cable‐less node recording system which, when combined with the efficiency of ISS, has the potential to change the way land seismic crews are configured and operated.Permalink: https://doi.org/10.1190/1.3255044FiguresReferencesRelatedDetailsCited ByReferences4 February 2020Vibroseis Ultra High Productivity blended Acquisition: Field Trial and Full Scale implementation in OmanZhao Jie, Jin hengjie, Zhu Yang, Yasin Charles, and Clow Forbes11 December 2018The impact of ISS® blending and source separation on refraction statics modelingTed Manning and Khaliq Ahmad19 August 2013Integration of deblending and surface-related multiple elimination: application to marine dataPanagiotis Doulgeris, Gerrit Blacquière, and Eric Verschuur25 October 2012Unconstrained simultaneous source land data processing*30 April 2012 | Geophysical Prospecting, Vol. 60, No. 4An inversion approach to separating sources in marine simultaneous shooting acquisition - application to a Gulf of Mexico data set28 May 2012 | Geophysical Prospecting, Vol. 60, No. 4Convergence analysis of a coherency-constrained inversion for the separation of blended data15 June 2012 | Geophysical Prospecting, Vol. 60, No. 4References29 April 2012Harmonic by harmonic removal technique for improving vibroseis data quality27 August 2010 | Geophysical Prospecting, Vol. 59, No. 2On the separation of simultaneous‐source data by inversionGboyega Ayeni, Ali Almomin, and Dave Nichols8 August 2011Iterative separation of blended marine data: Discussion on the coherence‐pass filterPanagiotis Doulgeris, Araz Mahdad, and Gerrit Blacquière25 May 2012Faster, Cheaper, Better Seismic Acquisition: now you can have all threeCraig J. Beasley, Emmanuel Saragoussi, Steve Whidden, and Franck Le Diagon21 October 2010Seismic reservoir monitoring with permanent encoded seismic arraysGboyega Ayeni21 October 2010Dithered slip‐sweep acquisitionClaudio Bagaini and Ying Ji21 October 2010 SEG Technical Program Expanded Abstracts 2009ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2009 Pages: 4338 publication data© 2009 Copyright © 2009 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 14 Oct 2009 CITATION INFORMATION Dave Howe, Mark Foster, Tony Allen, Ian Jack, Dave Buddery, Albert Choi, Ray Abma, Ted Manning, and Mike Pfister, (2009), Independent simultaneous sweeping in Libya‐full scale implementation and new developments, SEG Technical Program Expanded Abstracts : 109-111. https://doi.org/10.1190/1.3255044 Plain-Language Summary PDF DownloadLoading ..." @default.
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