.... In order to overcome specifically acquisition geometry differences between legacy and monitor surveys, Least-Squares Migration algorithm was applied to 4D datasets. 4D Least-Squares migration showed better 4D inversion results compared with the ones from Kirchhoff migration. As 4D inversion signal has...

... challenges. A real-time geomechanics service was utilized to overcome drilling challenges and real-time 3D ultra-deep resistivity inversion was implemented to optimize well placement. An extensive pre-drilling study for geomechanical and ultra-deep resistivity inversion modelling helped to develop road map...

... of the overburden as well as carbonate reservoirs to the deep salt using 3D OBC seismic, borehole seismic and Gravity-Magnetic data from two adjacent offshore fields in Abu Dhabi. Multi-Wave Inversion (MWI) utilizing direct arrivals, surface waves and two-way time surfaces was applied to obtain high-resolution...

... measurements, which allows a better fine-tuning structure and formation resistivity interpretation around the wellbore, independent of mud type. Along with those measurements, a new resistivity inversion has been developed that computes geometrically corrected resistivity for both vertical Rv, and horizontal...

... Abstract The need to understand field-scale reservoir heterogeneity using seismic data requires implementing advanced solutions such as stochastic seismic inversion to go beyond the resolution of seismic data. Conventional seismic inversion techniques provide relatively low-resolution reservoir...

.... A unique NMR-Gamma Inversion (NMR-GI) workflow is further utilized as a mathematically defined approach to process the raw data using probabilistic functions. The result is a more precise pore size distribution, coherent with the geological variations. NMR Capillary pressure was computed. The complex...

... and shear waves. Slowness and polarization information gives insight to in situ wavefield propagation. Slowness and polarization data was inverted to obtain TI anisotropy parameters along receiver array. The inversion of slowness and polarization data does not rely on overburden structural complexities...

... conditioning the data then different techniques like the AVO simultaneous inversion, AVO analysis and density inversion have been applied on both west Dikirnis and west Khilala fields. Building rock physics model was carried out in the onshore Nile Delta to link the elastic properties and the reservoir...

... Abstract Logging-while-drilling (LWD) Resistivity Measurements in high-angle and horizontal wells cannot be used for quantitative calculation directly, since they are easily influenced by borehole/formation geometry, surrounding beds and other factors. Although Least-Squares (LS) inversion...

... sensitivity to evaluate the performance of water and CO 2 injection? 2) Cancross-well EM monitor the different cycles of a typical WAG application? Cross-well EM involves applying inductive physics and 2D/3D inversion to define the inter-well conductivity distribution. Due to its unique spatial...

... strategy was reconsidered. scientific computing well data seismic inversion inversion Reservoir Characterization heterogeneity layer 3 porosity Upstream Oil & Gas information log data acoustic impedance grid production well society of petroleum engineers acoustic impedance map...

... the maps from RMS amplitudes, spectral decomposition and seismic facies classification with products from the AVO inversion allowed us to construct a confidence map, which assigns areas with different probabilities to encounter these channel sands. Building further on this QI success, the first 3D Close...

.... The established model equations are used to construct deep and shallow resistivity logs in the horizontal sections of thin reservoirs by resistivity inversion using the neutron porosity log data.Several well data sets have been tested and the results were complimented by test data, formation tester fluid sample...

... Abstract Classical geostatistical inversion methods perform a sequential approach where acoustic impedance (AI) values are generated in a seismic trace by trace basis ( Bortolli et al, 1993 , Haas A. et al, 1994 , Grijalba-Cuenca et al, 2000 ). These methods need a priori knowledge of areas...