The isotropic homogenous assumption in the conventional Geertsma model is often contradicted by reality because the rock properties in the overburden are typically anisotropic and often can be quite different from the reservoir. Thus, we present an analytical solution that extends Geertsma's...
Understanding geomechanical response to pore pressure changes in subsurface structures is crucial for safe drilling and carbon storage operations. One of the most recognized analytical geomechanical models to understand overburden geomechanical responses to reservoir pore pressure changes is...
In recent years, drilling fluids have become more complex in nature to satisfy diverse requirements in drilling operations. Accurate prediction of the frictional pressure losses while drilling is complex because of a combination of various drilling parameters. In the present study, a computational...
The contact angle is a crucial parameter for assessing wettability, but traditional methods like Amott and USBM provide different metrics. To enhance our understanding of wettability and enable quantitative characterization, in-situ contact angle measurement using X-ray micro-computed tomography has...
Deep placement of gel in waterflooded hydrocarbon reservoirs may block channels with high water flow and may divert the water into other parts of the reservoir, resulting in higher oil production. In order to get the gel constituents to the right reservoir depths, a delay in the gelling time in the...
The estimation of quantitative rock physics properties is of great importance for reservoir characterization and monitoring in CO2CO2 storage or enhanced oil recovery as an example. We have combined the high-resolution results of full-waveform inversion (FWI) methods with rock physics inversion...
Cuttings transport is a topic of great interest in the oil and gas drilling industry. Insufficient cuttings transport leads to several expensive problems. Knowledge and selection of the drilling fluids is one of the important factor for efficient hole cleaning. It has been observed, however, that...
This paper presents the main findings in the EU PARTNER Project (2002–2006) providing the basis for a unified European test approach for evaluating the potential alkali-reactivity of aggregates. The project evaluated the tests developed by RILEM and some regional tests for their suitability for use...
Seismic monitoring of CO2 storage is mainly sensitive fluid saturation changes in the reservoir. We combine electromagnetic and seismic data to image CO2 saturation and its distribution type at the Sleipner field. We find that the simultaneous joint inversion reduces uncertainty in recovering fluid...
I mars 2010 ble prosjekteringsstanderne i NS 34XX‐serien trukket tilbake, og erstattet med Eurokodene. Eurokode 7 bærer preg av hovedsakelig å være utarbeidet av eksperter innen jordmekanikk. Den er derfor noe unøyaktig i forhold til formuleringer og faguttrykk i forhold til berg, men den gjelder...
Convective mixing of free-phase CO2 and brine in saline aquifers is an established technique to accelerate the CO2 dissolution process. Correct estimation of the convection onset time and rate of CO2 dissolution into brine are two crucial parameters regarding safety issues, as the timescale for...