Technical Content

Reflection FWI is effective at providing low-wavenumber velocity updates for deep areas beyond the penetration depth of diving waves and significantly improves seismic imaging. However, the tomographic term of the FWI gradient that is good for low-wavenumber velocity updates can be contaminated by the ...

Deriving high-resolution velocity models in heavily faulted areas is challenging. This is further complicated by the presence of gas bodies at multiple depth levels. In case of a WAZ or FAZ dataset, azimuthal anisotropy effect can be significant, depending on the presence of a ...

WAZ’s sparse spatial sampling tends to limit our ability to push for shallow higher resolution image. In the deepwater GOM, there is typically more than one WAZ survey available. However, direct Kirchhoff imaging from multiple data sets suffers poor swing cancellation. To mitigate this ...

In this paper, we look at the HeliFalcon AGG survey conducted in the Aso-Oguni area exploring for geothermal fields, examine the technical challenges presented by the rugged terrains, describe some aspects of the data acquisition and processing, and present the survey results.

In this paper, we present an integrated study that combines geophysical and geological approaches to perform porosity estimation and populate the reservoir geological model with the estimated property. For pre-salt oilfields, due to the complex porosity distribution in carbonate reservoirs, predicting a reliable porosity ...

In order to solve the challenges of imaging the shallow reservoirs of the Barents Sea, CGG, in collaboration with Lundin Norway, have developed an innovative source-over-spread acquisition solution, known as TopSeis. This addresses the lack of near-offset data recorded in conventional towed-streamer acquisition by ...

This study uses multiple wells with high-quality acoustic and density logs to demonstrate a rock physics workflow for determining dynamic Biots’s coefficient from detailed petrophysical evaluation. One of the important inputs needed for determining dynamic Biots’s coefficient is a detailed interpretation of the rock ...

In deep-water depositional systems such as the slope canyon-turbidite channel system encountered on the continental slope, offshore West Nile Delta Basin, deterministic prestack seismic inversion followed by facies classification delineated thick-bedded and thin-bedded gas-sand reservoirs encased in bypassed stratigraphic traps and also delineated prospective ...

This paper highlights compelling imaging improvements achieved through modern high-end reprocessing in Gippsland Basin. The area of study, largely represented by the Bass Canyon, has strong exploration potential but is high risk. The major challenges in this region are related to geologic complexity and ...