In this work we apply a recently developed machine learning routine for automatic well planning to simplify well parameterization in reservoir simulation models. This reduced-order parameterization is shown to be beneficial for well placement optimization, both in terms of convergence and final well...
To achieve an acceptable level of zonal isolation, well integrity should be guaranteed in hydrocarbon production and geological CO2 sequestration. Well pressure test can cause different types of failures in the well system leading to leakages through these failures. Laboratory evidences have...
The transport of oil-water dispersions in petroleum production pipelines is difficult to predict and requires special attention since it affects the performance of the entire system. For future field developments it is required to generate accurate predictive models to guarantee an optimal field...
Study how stiffness contrast plays an important role in controlling pore pressure changes, stress path and other 4D responses by only changing rock properties in reservoir surroundings. ...
Laboratory data from controlled rock mechanical tests with various shales have been used to understand and quantify stress effects on wave velocities of relevance for 4D seismics, and to quantify the difference between static and dynamic mechanical properties and their anisotropies....
Reliable quantification of carbon dioxide (CO2CO2) properties and saturation is crucial in the monitoring of CO2CO2 underground storage projects. We have focused on quantitative seismic characterization of CO2CO2 at the Sleipner storage pilot site. We evaluate a methodology combining high-resolution...
A feasibility study of inverting for CO2 elastic properties using a model based AVO inversion is carried out. We use principal component analysis on a set of PP reflection coefficients to calculate an optimal basis function for the AVO response of the CO2 plume. The method is applied to the marine...
Calculating the normal incidence reflection responses of a stack of layers representing Utsira reservoir, we show that the seismic amplitudes are strongly affected by the partial saturation of CO2 and brine in the high porosity sandstone layers. The anelasticity in these layers are taken into...
Shale plays an important role as cap rock above oil and gas reservoirs and above e.g. CO2 storage sites, as well as being source and reservoir rock in development of so-called unconventional reserves. Shale anisotropy needs to be accounted for in geophysical as well as geomechanical applications...