rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Linear demultiple solution based on bottom-multiple generator (BMG) approximation
    sub title: subsalt example
  name:
    name part: Oladeinde, Abiola Omobolaji
    name part: 1974-
    role:
      role term: creator
  name:
    name part: Ikelle, Luc T.
    role:
      role term: thesis advisor.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2006
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    form: remote
  abstract: Significant quantities of hydrocarbons are found in complex salt environments. One of the modern challenges of exploration and production activities is to image below salt. This challenge arises from the complexities of salt structures, weak primaries from the subsalt, and the interference of free-surface multiples with the weak primaries of the subsalt. To effectively process subsalt data, we need to develop a method of attenuating free-surface multiples that preserves the amplitude and phase of primaries and does not introduce artifacts at either near and far offsets. In this thesis, we will demonstrate that the weak primaries of the subsalt can be preserved while attenuating free-surface multiples. The method used for the demonstration is the bottom-multiple generator (BMG) reflector approximation. This technique requires that a portion of the data containing only primaries be defined. A multidimensional convolution of the data containing only primaries with the actual data will predict free-surface multiples and hence is used to attenuate free-surface multiples from the actual data. This method is one of the most effective methods for attenuating free-surface multiples; however, the method requires muting data at the BMG location. One of the issues investigated in this thesis, is to establish the sensitivity of the BMG demultiple technique when the mute at the BMG location end up cutting some seismic reflections, which can be the case incomplex environments such as the Gulf of Mexico and Gulf of Guinea, where free-surface multiples interfere with primaries. For this investigation, we generated synthetic data through the 2D elastic finite-difference modeling technique. The synthetic seismic data contain primaries; free-surface multiples, and internal multiples, and direct waves acquired over a 2D geological model that depicts a shallow-water geology. In this thesis, we also investigate if the first step of the BMG demultiple technique can sufficiently attenuate f…
  note: by Abiola Omobolaji Oladeinde.
  note: "Major Subject: Geophysics"
  note: Title from author supplied metadata (automated record created on Feb. 23, 2007.)
  note: Vita.
  note: Abstract.
  note: Electronic resource.
  note: Mode of access: World Wide Web.
  note: System requirements: World Wide Web access and Adobe Acrobat Reader.
  note: M. S. Texas A&M University 2005
  note: Includes bibliographical references.
  note: Text (Thesis).
  subject:
    topic: Major Geophysics
  subject:
    topic: Free-surface multiples
  subject:
    topic: Bottom multiple generator (BMG) reflector
  identifier: http://hdl.handle.net/1969.1/4407
  record info:
    record content source: TXA
    record creation date: 070321
    record change date: 20151104162354.0
    record identifier: in00002222211