Blar i NORCE Energi og teknologi på tidsskrift "Journal of Petroleum Science and Engineering"
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4D seismic history matching
(Journal article; Peer reviewed, 2021)Reservoir simulation models are used to forecast future reservoir behavior and to optimally manage reservoir production. These models require specification of hundreds of thousands of parameters, some of which may be ... -
4D seismic history matching: Assessing the use of a dictionary learning based sparse representation method
(Peer reviewed; Journal article, 2020)It is possible to improve oil-reservoir simulation models by conditioning them on 4D seismic data. Computational issues may arise related to both storage and CPU time due to the size of the 4D seismic dataset. An approach ... -
Accounting for model errors of rock physics models in 4D seismic history matching problems: A perspective of machine learning
(Journal article; Peer reviewed, 2021)Model errors are ubiquitous in practical history matching problems. A common approach in the literature to accounting for model errors is to treat them as random variables following certain presumed distributions. While ... -
Cement properties characterization from a section retrieved from an oil production well after 33 years of downhole exposure
(Peer reviewed; Journal article, 2021)A unique data set has been constructed based on the study of class G cement recovered from an oil well on the Norwegian continental shelf. The cement was placed between two casing sections and submitted to downhole conditions ... -
Effects of confinement pressure on the mechanical behavior of an oil well cement paste
(Peer reviewed; Journal article, 2021)Oil well cement paste is a key structural component in wells that should provide mechanical support to the casing and prevent uncontrolled flow of formation fluids along the wellbore and to the environment. Since the annular ... -
Ensemble-based constrained optimization using an exterior penalty method
(Peer reviewed; Journal article, 2021)In science and engineering, non-linear constrained optimization has been a useful mathematical technique for many practical applications. Of interest to us is its applicability in the modeling and prediction of hydrocarbon ... -
An ensemble-based decision workflow for reservoir management
(Peer reviewed; Journal article, 2022)It is challenging to make optimal field development and reservoir management decisions with diminishing resources and low-emission requirements. For an optimal exploitation of the reservoir fluids, it is necessary to ... -
Improving Sequential Decisions – Efficiently Accounting for Future Learning
(Peer reviewed; Journal article, 2021)In sequential field development planning, past decisions not only directly affect the maximum achievable expected NPV but also influence the future information that can be used to reduce geological uncertainty. To act ... -
Modeling of relative permeabilities including dynamic wettability transition zones
(Peer reviewed; Journal article, 2021)Wettability is a pore-scale property that impacts the relative movement and distribution of fluids in a porous medium. There are reservoir fluids that provoke the surface within pores to undergo a wettability change. This ... -
Restoration of annular zonal isolation using localized casing expansion (LCE) technology: Treatment of near-horizontal test sections containing a free-water channel
(Journal article; Peer reviewed, 2021)Fluid migration behind casings is a well integrity problem that can result in sustained casing pressure, undetected leaks to the environment, and potentially very difficult remediation attempts. Traditional methods for ... -
Triaxial behavior of a stabilized and a highly porous oil well cement paste at different saturation and drainage conditions
(Peer reviewed; Journal article, 2022)Well cement is the most common barrier material in wells for geothermal and hydrocarbon production. As cements are exposed to hydrostatic loads and periods of deviatoric loading in wellbore environments, it is important ... -
Vibration-assisted annular fluid displacement for rig-less well abandonment operations
(Journal article; Peer reviewed, 2022)Through-tubing abandonment is the operation where the production tubing is cut or punched and cemented inside the production casing. This can establish a full cross-sectional barrier or isolation in wells where the cement ...