Now showing items 11-20 of 28
Quality of the Analysis Step in EnKF
(The University of Bergen, 2011-06-15)
In many physical applications we want to characterize the parameters of a system based on indirect observations or measurements. In a reservoir simulator setting, the goal is to simulate the production of hydrocarbons ...
Fluid Flow Properties of WAG Injection Processes
Immiscible water-alternating-gas (IWAG) experiments performed on equilibrated fluids are summarised together with the corresponding two-phase gas-oil and water-oil displacements. Experimental studies at reservoir condition ...
Features concerning capillary pressure and the effect on two-phase and three-phase flow
The effect of capillary pressure related to immiscible WAG (Water Alternate Gas) is studied by use of a numerical simulator. The capillary pressure is found to have a significant effect on the pressure gradient and the ...
Continuous Updating of a Coupled Reservoir-Seismic Model Using an Ensemble Kalman Filter Technique
(The University of Bergen, 2007-03-29)
This work presents the development of a method based on the ensemble Kalman filter (EnKF) for continuous reservoir model updating with respect to the combination of production data, 3D seismic data and time-lapse seismic ...
4D Seismic History Matching Using the Ensemble Kalman Filter (EnKF): Possibilities and Challenges
(The University of Bergen, 2010-05-27)
This research endeavor presents a 4D seismic history matching work flow based on the ensemble Kalman filter (EnKF) methodology. The objective of this work is to investigate the sensitivity of different combinations ...
Numerical Methods for Conservation Laws with a Discontinuous Flux Function
(The University of Bergen, 2011-06-01)
When simulating two-phase flow in a porous medium, numerical methods are used to solve the equations of flow, called conservation laws. In the industry, this is done by a reservoir simulator, and the most widely used method ...
Karakterisering av strømning gjennom en forkastning med fault facies- og standardmodell ved bruk av reservoarsimulator
(The University of Bergen, 2011-11-21)
Forkastninger har en betydelig innvirkning på strømninger i et reservoar. Hittil har forkastninger blitt modellert som en flate eller et plan i vanlige reservoarsimulatorer, men studier har vist at forkastninger ofte må ...
3D stochastic modelling of fault zones in siliciclastic reservoirs. Implications for reservoir description and fluid flow modelling
(The University of Bergen, 2014-12-16)
Fault zones in siliciclastic rocks form distinct volumetric entities and typically exhibit great structural complexity. While it has been considered that the main impact of fault zones to fluid flow is to baffle or block ...
An improved workflow for image- and laser-based virtual geological outcrop modelling
(The University of Bergen, 2013-03-15)
Photorealistic 3D models, representing an object’s surface geometry textured with conventional photography, are used for visualization, interpretation and spatial measurement in many disparate fields, such as cultural ...
Robust Multiscale Control-volume Methods for Reservoir Simulation
(The University of Bergen, 2012-04-30)