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 ...
Many hydrophone-only receiver deghosting approaches assume a stationary free surface profile, or that the data may be represented by linear events within a small spatial aperture. In this paper we propose methods to address these limitations. Firstly, we describe a data-driven methodology to estimate ...
The standard processing approach to transform raw shots records into final products suited to geological interpretation involves cascading numerous steps that can be classified in: pre-processing, which aims at correcting the acquisition imperfections or undesired effects (designature, deghosting, geometry), velocity model building which identifies ...
A high-resolution regional seismic, gravity and magnetics dataset was acquired offshore southern Gabon, which allowed an in-depth and integrated approach for analyzing the crustal setting in this area. Detailed analysis of the datasets available, and 3D modeling of the crust over this region, suggests ...
Most recent depth seismic imaging studies involve both full-wave and ray-based methods as the resolution of complex ill-posed problems often require a wide range of tools. Also ray based methods suffer from well-known drawbacks, they will provide accurate results in most of the cases ...
A joint inversion of P-wave first arrivals, surface wave dispersion curves, and horizon picking of reflectivity image is proposed in order to produce a high resolution Vp (and Vs) model of the near-surface. These three datasets are merged together in a stochastic optimization process ...