Multi-Level Inversion Based On Mesh Decoupling

Understanding the permeability of the subsurface is a crucial step to simulate fluid flow in the subsurface. A parameter estimation problem for the flow equations can be solved to find the permeability. The robust identification of material parameters remains a significant challenge. In classical approaches, the non-linear least-squares problem...

The influence of mechanical contrast on industrial and natural hydraulic fracturing

The heterogeneity of layered systems leads to variation in rock or soil mechanical properties, influencing the resistance to failure. A formation breaks by fracture propagation when the effective stress surpasses the formation strength. The propagation of a fracture through a mechanical interface depends on whether the formation strength of the...

Optimization of Jetted Radial Wells

Jetted radial wells are a relatively new form of hydraulic stimulation for oil and gas wells, where small diameters holes extend radially from a wellbore. This technique for increasing well connectivity could also be applied to geothermal wells. Radials can be freely placed along a backbone well, making the design of an economically viable well...

Surfactant-Polymer Chemical EOR and Subsequent Oil Bank Behaviour

After a waterflood the oil saturation is (close to) the irreducible oil saturation, wherein oil in a porous medium is dispersed over the pore network in unconnected droplets due to snap off. In a chemical flood, the surfactant reduces oil-water interfacial tension and liberates the trapped oil droplets. These mobilised droplets coalesce into a...

Field Analysis through Integrated Modeling and Simulation

Simulation to predict the well and reservoir performance is a very important and established process in reservoir engineering. Integrated production modeling allows improving the understanding of the field’s performance and production network, fluid flow behavior and optimization at any stage and level during the life of the field through...

Numerical Simulation of Radial Non-Newtonian Foam Flow in a Reservoir

Non-Newtonian foam flow in a reservoir can be modeled numerically by discretization of the corresponding analytical formulas. The injection of foam is compared to the injection of water by comparing the injection pressures, which is represented as a dimensionless pressure rise at the injection well. The model first applies the forward-difference...

Facies and permeability prediction based on analysis of core images

The present standards for core interpretation do not contain the acquisition of high resolution images from core slabs; images are taken on a very low resolution under a poor light source for administrative purposes only. The advantages of taking high resolution images and subsequent analysis of these images could be substantial and are...

Modeling and Laboratory Study of Carbonated Water Flooding

Carbonated Water Flooding (CWF) is an enhanced oil recovery (EOR) method where an oil reservoir is flooded with water containing dissolved CO2. It is being considered as a promising EOR (Enhanced Oil Recovery) method for maturing light and heavy oil fields. A numerical and experimental study of the CWF was conducted, focusing on the underlying...