...Angus Lomas; Satyan Singh; Andrew Curtis ABSTRACT Marchenko methods use seismic data acquired at or near the surface of the earth to estimate seismic signals as if the receiver (now a virtual receiver) was at an arbitrary point inside the subsurface of the earth. This process is called redatuming...

...Angus Lomas; Andrew Curtis ABSTRACT Geoscientists often have little information about earth’s subsurface heterogeneities prior to mapping them using seismic or other geophysical data. Marchenko methods are a set of novel, data-driven techniques that help us to project surface seismic data to points...

...Jan Thorbecke; Evert Slob; Joeri Brackenhoff; Joost van der Neut; Kees Wapenaar ABSTRACT The Marchenko method makes it possible to compute subsurface-to-surface Green’s functions from reflection measurements at the surface. Applications of the Marchenko method have already been discussed in many...

... in seismic data. This task is more difficult in elastic (solid) media because mode conversions create families of internal multiples not present in the acoustic case. We have developed a method to predict prestack internal multiples in general elastic media based on the Marchenko method and convolutional...

...Myrna Staring; Roberto Pereira; Huub Douma; Joost van der Neut; Kees Wapenaar ABSTRACT We have developed an adaptive double-focusing method that is specifically designed for the field-data application of source-receiver Marchenko redatuming. Typically, the single-focusing Marchenko method...

..., for example by the Jakubowicz method or by the inverse scattering series (ISS), as long as monotonicity, that is, “correct” temporal event ordering, is obeyed. Alternatively, the (conventional) Marchenko method removes all overburden-related wavefield interactions by formulating an inverse problem that can...

... the Marchenko method that retrieves Green’s functions from surface seismic data for target-oriented imaging without applying adaptive subtraction. Marchenko imaging has produced promising results on several offshore seismic data sets, but an onshore application is still needed. To better understand the effects...

...Kees Wapenaar; Joeri Brackenhoff; Marcin Dukalski; Giovanni Meles; Christian Reinicke; Evert Slob; Myrna Staring; Jan Thorbecke; Joost van der Neut; Lele Zhang ABSTRACT With the Marchenko method, it is possible to retrieve Green’s functions between virtual sources in the subsurface and receivers...

...Haorui Peng; Ivan Vasconcelos; Yanadet Sripanich; Lele Zhang ABSTRACT Marchenko methods can retrieve Green’s functions and focusing functions from single-sided reflection data and a smooth velocity model, as essential components of a redatuming process. Recent studies also indicate that a modified...

...Yanadet Sripanich; Ivan Vasconcelos; Kees Wapenaar ABSTRACT The Marchenko method retrieves Green’s functions between the acquisition surface and any arbitrary point in the medium. The process generally involves solving an inversion starting with an initial focusing function, e.g., a direct-wave...

... generated by Marchenko redatuming contains accurate estimates of not only the primaries but also the internal multiples. A target-oriented imaging method, referred to as Marchenko imaging, was implemented for imaging complex structures of the earth using the seismic response obtained through Marchenko...

...Claudia Haindl; Matteo Ravasi; Filippo Broggini ABSTRACT Marchenko focusing and imaging are novel methods for correctly handling multiple scattered energy while processing seismic data. However, strict requirements in the acquisition geometry, specifically the colocation of sources and receivers...

...Xiaochun Chen; Yezheng Hu; Yukai Wo; Xuri Huang; Yubo Yue; Weiping Cao; Kang Chen ABSTRACT The Marchenko method can retrieve Green’s functions among virtual sources in the subsurface and receivers at the surface from single-sided reflection data. This process, called Marchenko redatuming, allows...

... geologic interpretation. Traditional internal multiple elimination methods suffer from the requirement of picking horizons of multiple generators and/or a top-down adaptive subtraction process. Marchenko imaging provides an alternative solution to directly remove the artifacts due to internal multiples...

..., the method uses the direct arrivals from borehole data in the Marchenko method. The first step is to retrieve the focusing functions and the up-down wavefields at the borehole level using an iterative Marchenko scheme. The second step is to solve two linear equations using a least-squares minimizing method...