... upstream oil & gas migration traveltime american association geologist reservoir characterization ray-kdm exploration geophysicist figure 3 imaging wave-kdm equation applied geoscience figure 4 amplitude expanded abstract society geology kirchhoff migration international...

... from each critical processing step, such as Full Waveform Inversion (FWI), joint demultiple, least square migration etc. The addition of all these incremental improvements turned out to be significant when combined. geologist reservoir characterization dataset applied geoscience united states...

... We present a full waveform imaging method based on trueamplitude migration that inverts both velocity and impedance models. Within the context of full waveform inversion, our method first inverts the velocity model by exploiting travel time information, then inverts the impedance model...

... deploying modern FWI (full waveform inversion) and Kirchoff PSDM (pre-stack depth migration) processing, but these technologies have been relatively rarely used in hard rock settings to date. A low-cost sparse 3D seismic survey was designed and acquired in 2022 to de-risk and demonstrate the value...

... We present migrated images of the horizontal (H) component that improves structural interpretation on a synthetic ocean bottom node (OBN) dataset simulated on the elastic Marmousi2 model (Martin et al., 2002). With simple and uniform post-processing applied to Kirchhoff depth migrated images...

... upstream oil & gas migration international american association geologist china government psf exploration geophysicist asia government geophysics deconvolution geology reservoir characterization position depth psf deconvolution kirchhoff migration artifact partition...

... of an approximate Gauss-Newton Hessian computed from a linearization of the wave-equation as commonly done in Least-Squares Migration (LSM). More precisely, we rely on the link between the conventional gradient and the gradient obtained from Born modeling this gradient (i.e., obtained by demigration-migration...

... geology reservoir characterization geophysics upstream oil & gas migration equation applied geoscience alkhalifah geologist china government international american association media time migration acoustic approximation vti jianping huang china university mcmechan asia...

... and directivity corrections were applied before migrating the data. The resultant reverse time migration (RTM) and Kirchhoff depth migration (KDM) images are structurally consistent and show superior resolution when compared to the surface seismic image. Post-stack least-squares migration in the image domain...

... with generating a 3D volume over a vast area. upstream oil & gas reservoir characterization international society asia government geological subdiscipline applied geoscience geologist india government exploration geophysicist energy 10 iteration dataset screening migration intersection...

... A large-scale distributed acoustic sensing (DAS) dataset acquired during an ocean bottom node (OBN) survey was processed to produce high-resolution images of the reservoir. Novel processing workflows were deployed to prepare DAS data for migration. Reverse time migration (RTM) and Kirchhoff...

... Wave-equation-based seismic modeling and migration such as reverse-time migration (RTM) commonly ignore the effects of reflectivity caused by velocity and density. The ignorance could lead to inaccurate wavefield extrapolation. To include the effects for seismic modeling and migration...

... azimuth anisotropy tsvankin effectiveness geologist asia government migration fracture geology reservoir characterization application perpendicular upstream oil & gas flatness fracture imaging orthotropic migration geophysics china government azimuthal anisotropy imaging...

... are concentrated in the center of these analogue basins, nevertheless, a considerable number of fields also lie outside of those areas particularly in the southern Malay and West Natuna basins, indicative of long-range migration out of the principal kitchen areas. A 2D petroleum system modeling study was conducted...

... High-precision imaging is the goal of oil-gas exploration. The imaging result is usually obtained by mean stacking from common-image gathers (CIGs) produced by pre-stack depth migration. But, the CIGs suffer from misalignment, due to inaccurate migration velocity and mad physics. Furthermore...

... Using land seismic data from the Eagle Ford Play, we present an efficient workflow for accurately determining the subsurface Q-factor model, mainly accounting for local viscoelastic effects. The method is primarily based on an advanced Q seismic migration that makes it possible to create...

... Imaging complex salt structures still imposes a challenge for reverse time migration (RTM) and angle gather calculation. Complex regions create chaotic wavefields, which significantly diminish the quality of Poynting vectors (PV) and consequently the angle gathers. In our work, we use...

... The elastic wave reverse time migration with Gaussian beams is a depth domain migration method combining the efficiency and flexibility of Gaussian beam migration with the high accuracy of reverse time migration, which enables targeted imaging. Its application in anisotropic media has been...

... structural geology geological subdiscipline colloidal migration geologist exploration geophysicist migration nanodroplet hypothesis petroleum geology economic geology mechanism american association upstream oil & gas reservoir characterization cementation international...

...-domain inversion scheme accounting for both PP and PS illumination effects. We implement the approach in the context of Kirchhoff depth migration and demonstrate its effectiveness in handling PS illumination effects with a controlled synthetic experiment. geology geological subdiscipline...