The application of nanotechnology to the petroleum industry has sparked recent interest in increasing oil recovery, while reducing environmental impact. Nanocellulose is an emerging nanoparticle that is derived from trees or waste stream from wood and fiber industries. Thus, it is taken from a...
In this work, an experimental study was carried out with the aim of linking static and dynamic stiffness of shales. Four fully saturated field shales were tested. The experiments were carried out in SINTEF's low-frequency cell. The measurements included undrained quasi-static loading cycles from...
A feasibility study has been done for comparing a concept based on subsea tunnels and caverns with traditional development strategies for offshore oil fields. A realistic oil field off the shore of northern Norway has been studied. The concept includes 2 or 3 tunnels descending from the terminal...
This report is written as part of the multidisciplinary Work Package 5 in HydroCen. Increased production from variable renewable energy sources leads to a higher demand for flexible power sources to fill the gap with low-variable production. At the same time, a review of the environmental...
In this work, an experimental study was carried out with the aim of linking static and dynamic stiffness of shales. Four fully saturated field shales were tested. The experiments were carried out in SINTEF's low-frequency cell. The measurements included undrained quasi-static loading cycles from...
The current study shows that heating a cased borehole in low-permeability shale rock can induce plastic deformation, leading to the closure of the casing annulus and decreasing annulus connectivity. The thermally induced borehole closure is interesting for the field operation of plug and abandonment...
The paper describes application of the cross-impact method in the process of selecting locations and technologies used in a geothermal system based on energy accumulated in a dry rock formation, where CO2 is used as the working medium. The survey is based on the opinion of a group of 20 experts...
Cement-steel interfacial strength is an important measure for estimating the robustness and hydraulic sealing ability of wells. In this paper, laboratory experiments were performed in which small steel pipes (10 mm in diameter) were cemented in place within a Portland cement slurry under application...
Changes in pore pressure within geological reservoirs, due to, e.g., hydrocarbon production, CO2 and energy storage, or wastewater disposal, may cause substantial stress changes in the overburden, altering propagation velocities of elastic waves. The corresponding time shifts are detected and...
Faults are either sealing or not, which defines pressure compartments in a storage reservoir. Understanding fault behavior is vital to de-risk and optimize CO2 storage in a chosen site. Traditionally, faults are implemented as 1D lines in 2D geomechanical software packages (2D planes in 3D codes...