... subsurface migration angle gather operator propagation Prestack true-amplitude angle-domain viscoelastic least squares reverse time migration Yue Wang*, Yang Luo, Peng Shen, Jingru Chen, Guangchi Xing, Ao Cai, Mark Fan, Guojian Shan, Lin Zhang, Xiaoting Lou, Zhengyun Zhou, Chevron USA. Summary We...

... We study the seismic response of the injected hydrogen in the subsurface with the intention of developing an effective seismic monitoring approach to detect hydrogen leakage during and after storage. As a type of clean energy, the stored hydrogen within the subsurface can be later extracted...

... workflow upstream oil & gas inversion reservoir characterization american association grid avo inversion close-the-loop workflow international woodside energy exploration geophysicist physic inversion society geologist reservoir simulation reservoir geomechanics saturation subsurface...

...) seismic sources and novel autonomous always-on smart six-component (6C) ground motion sensors. geology seismometer international geologist sensor anchor united states government applied geoscience american association energy 10 subsurface slv society california novel acquisition...

... structure and improve resolution of subsurface geoelectric structure. ITEM differs from applications of the wave propagation synthetic aperture concept to diffusive EM geophysics. The synthetic aperture concept is incomplete, achieving no vertical compaction, for TEM beamforming. ITEM achieves full...

... and southeastern New Mexico have appeared only rarely in recent literature. This study presents a comprehensive dataset covering four measured sections of the Fusselman Formation outcrop (equivalent to the Fusselman Formation and Wristen Group of the subsurface) and the underlying Middle to Upper Ordovician...

... in insufficient illumination to the subsurface. Therefore, it is difficult to reveal velocity structures with small scale, large buried depth or hidden characteristics by conventional wavefield inversion methods. With geobody identification as the core theory and velocity fusion as the tool, this paper proposes...

... By fitting observed data with predicted seismograms, least-squares migration (LSM) computes a generalized inverse for a subsurface reflectivity model, which can improve image resolution and reduce artifacts caused by incomplete acquisition. However, the large computational cost of LSM limits its...

... reservoir characterization information upstream oil & gas petroleum geology natural language economic geology exploring sk earthon co inversion exploration geophysicist energy 10 guangdong international subsurface american association application society interpretation shenzhen...

... Interpretation tasks of subsurface data, for example in the form of seismic, logs, and their derivatives, have been automated to some extent with deep learning solutions such as automated fault interpretation. These solutions extract information (e.g. geologic objects and their attributes) from...

... subsurface infrastructure upstream oil & gas information applied geoscience geophysics boulder american association installation society dimension geophysical measurement reservoir characterization imaging exploration geophysicist international pathway energy 10 building-code...

.... But when the noise sources move (semi-)randomly within the receiver array, cross-correlation fails to retrieve the coherent subsurface information. In this case study, we observe that the auto-correlation of the noise recordings, dominated by surface waves, changes its signatures significantly after...

... The substantial rise of seismic activity observed in both Oklahoma and Kansas from 2012-2016 has been widely linked to the similar increase in downhole injection of wastewater which occurred during that time. Injection of fluids into the subsurface is typically related to the extraction...

... wavefields. Crucially for regions with a shallow seafloor, the downgoing wavefield permits superior imaging of the shallow subsurface. upstream oil & gas international subsurface obn experiment deconvolution experiment exploration geophysicist sequence american association wavefield...

... geometry and a reference image. The reference image is obtained from prior subsurface information that is assumed to be available. We tested the method with different subsurface models. The results show that the acquisition geometry is optimized according to the complexity of each subsurface model...

... subsurface estimation imaging petrophysics international applied geoscience american association hydrology exploration geophysicist More than two decades ago, Rosemary Knight asked her graduate students to imagine how we might make groundwater “flow through an image” collected using ground...

... to the Upper Eagle Ford Formation of Donovan et al. (2015), and interpreted as Latest Cenomanian to Early Turonian in age. delta system upper cretaceous harris delta system society reservoir characterization subsurface strata harris delta system formation upper eagle ford formation exploration...

... reservoir characterization wapenaar exploration geophysicist assumption latexit sha1 marchenko applied geoscience equation media matrix relation society subsurface upstream oil & gas propagator matrix international american association aaab xicbvdlssnafj3uv62v...

... Imaging the subsurface using passive data acquired with a towed streamer configuration is discussed in this paper. Instead of an active source, the acoustic wavefield generated by the seismic vessel is used for imaging the subsurface. The primary purpose of this work was to test the feasibility...

... show that up/down decomposition in the subsurface is ac- tually not needed for the derivation of these representations. Inhomogeneous half-space This opens the way for research into new Marchenko methods which are not limited by the assumption that up/down decom- Figure 1: The focusing function F(x, xR...