Browsing Publikasjoner fra CRIStin by Subject "petroleumsteknologi"
Now showing items 1-20 of 69
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Adsorption of Crude Oil Components onto Carbonate and Sandstone Outcrop Rocks and Its Effect on Wettability
(Peer reviewed; Journal article, 2021-03)The processes of establishing and altering reservoir wettability are still subjects of discussion due to the complexity of the underlying crude oil–brine–rock interactions. This study was aimed at investigating the ... -
Aging and Temperature Effects on the Performance of Sustainable One-Part Geopolymers Developed for Well-Cementing Applications
(Peer reviewed; Journal article, 2023)This study elucidates the effects of aging and temperature over the performance of one-part “just add water” (JAW) granite-based geopolymers for application in well cementing and well abandonment. Additionally, the ... -
Analysis of nonlinear effects in fluid flows through porous media
(Peer reviewed; Journal article, 2022-01)This article examines the nonlinear effects of fluid flow in a porous medium, governed by a new semi-analytical equation, from three aspects: equation derivation, experimental verification, and macroscale simulation ... -
Analytical modeling and correction of steady state relative permeability experiments with capillary end effects – An improved intercept method, scaling and general capillary numbers
(Peer reviewed; Journal article, 2021)Steady state relative permeability experiments are performed by co-injection of two fluids through core plug samples. Effective relative permeabilities can be calculated from the stabilized pressure drop using Darcy’s law ... -
Analytical modeling of steady state relative permeability experiments with end effects – An improved intercept method, scaling and general capillary numbers
(Peer reviewed; Journal article, 2021)Steady state relative permeability experiments are performed by co-injection of two fluids through core plug samples. Effective relative permeabilities can be calculated from the stabilized pressure drop using Darcy’s law ... -
Analytical solutions for forced and spontaneous imbibition accounting for viscous coupling
(Journal article; Peer reviewed, 2019-11-22)Fluid-fluid momentum transfer can cause higher flow resistance when fluids flow in opposite directions as compared to the same direction. Conventional modelling of flow in porous media using simple, saturation dependent relative ... -
Application of machine learning to assess the value of information in polymer flooding
(Peer reviewed; Journal article, 2021-12)In this work, we provide a more consistent alternative for performing value of information (VOI) analyses to address sequential decision problems in reservoir management and generate insights on the process of reservoir ... -
Application of multicriteria fuzzy clusterization approach to assess the arctic seas oil and gas field development prospects
(Peer reviewed; Journal article, 2019)The article describes a unified approach to the assessment of resources and business planning. As an example, the oil and gas resources of the Pechora Sea are considered in the paper. Based on the specifics of the problem ... -
Cement Placement: An Overview of Fluid Displacement Techniques and Modelling
(Peer reviewed; Journal article, 2021-01)During drilling operations, effective displacement of fluids can provide high-quality cementing jobs, ensuring zonal isolation and strong bonding of cement with casing and formation. Poor cement placements due to incomplete ... -
Characteristic forced and spontaneous imbibition behavior in strongly water-wet sandstones based on experiments and simulation
(Peer reviewed; Journal article, 2022-05)Forced and spontaneous imbibition of water is performed to displace oil from strongly water-wet Gray Berea (~130 mD) and Bentheimer (~1900 mD) sandstone core plugs. Two nonpolar oils (n-heptane and Marcol-82) were used as ... -
CO2 hydrogenation to methanol over partially embedded Cu within Zn-Al oxide and the effect of indium
(Peer reviewed; Journal article, 2021-08)Developing effective catalysts for CO2 hydrogenation to methanol is an important step to improve the efficiency of a promising process for green synthesis of fuels and chemicals. Optimizing the Cu dispersion is often the ... -
Data-driven sensitivity analysis of complex machine learning models: A case study of directional drilling
(Peer reviewed; Journal article, 2020-12)Classical sensitivity analysis of machine learning regression models is a topic sparse in literature. Most of data-driven models are complex black boxes with limited potential of extracting mathematical understanding of ... -
Determinants of oil and gas investments on the Norwegian Continental Shelf
(Journal article; Peer reviewed, 2018-02)This paper studies the investment decisions by oil and gas companies operating on the Norwegian Continental Shelf. We account for the heterogeneity across the fields by including field-specific variables, including geological ... -
Determination of phase-partitioning tracer candidates in production waters from oilfields based on solid-phase microextraction followed by gas chromatography-tandem mass spectrometry
(Peer reviewed; Journal article, 2020-08)In the present document, we report the development of an analytical method consisting of a sequential direct-immersion/headspace solid-phase microextraction (DI-HS-SPME) followed by gas-phase chromatography and tandem mass ... -
Development of One-Part Rock-Based Geopolymers for Downhole Cementing Applications
(Peer reviewed; Journal article, 2023-10)The use of geopolymers as a full replacement for cement in oil well cementing applications requires the development of not only environmentally friendly but also user-friendly cementitious materials. This study aims to ... -
Downhole Temperature Modeling for Non-Newtonian Fluids in ERD Wells
(Journal article; Peer reviewed, 2018)Having precise information of fluids' temperatures is a critical process during planning of drilling operations, especially for extended reach drilling (ERD). The objective of this paper is to develop an accurate temperature ... -
Duplex steel welding in artic conditions – Correlation of welding parameters in relation to HISC
(Peer reviewed; Journal article, 2021)Duplex steel is an austenitic-femtic steel alloy commonly used in the offshore and subsea oil and gas industry. Duplex steel provides a unique combination of good mechanical properties and corrosion resistance in sweet and ... -
Effect of buoyancy and inertia on viscoplastic fluid-fluid displacements in a regular and an irregular eccentric annulus
(Peer reviewed; Journal article, 2020-09)Casing strings and liners are important subsurface structural components in petroleum and in geothermal wells. After the casing string has been run in hole, it is cemented to the formation by pumping a sequence of spacer ... -
Effect of salinity on silica nanoparticle adsorption kinetics and mechanisms for fluid/rock interaction with calcite
(Peer reviewed; Journal article, 2019-02)This study addresses the kinetics of silica nanoparticle adsorption on calcite from a solution at three salinities: deionized water (DIW), synthetic seawater (SSW), and low salinity water (LSW). The nanoparticle adsorption ... -
Effect of Salts on Interfacial Tension and CO2 Mass Transfer in Carbonated Water Injection
(Journal article; Peer reviewed, 2019-02)Carbonated water injection (CWI) is a promising enhanced oil recovery (EOR) and CO2 sequestration method, which overcomes the problems associated with CO2 EOR. CO2 mass transfer and interfacial tension (IFT) are important ...