Blar i NTNU Open på forfatter "Schümann, Heiner"
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Dynamic Process Modeling of Topside Systems for Evaluating Power Consumption and Possibilities of Using Wind Power
Eyni, Leila; Stanko Wolf, Milan Edvard; Schümann, Heiner; Querishi, Ali Hassan (Peer reviewed; Journal article, 2022)Norwegian offshore wind farms may be able to supply power to offshore oil and gas platforms in the near future thanks to the expeditious development of offshore wind technology. This would result in a reduction in CO2 ... -
The effect of hydrocarbon prices and CO2 emission taxes on drainage strategies
Sutoyo, Handita Reksi Dwitantra; Schümann, Heiner; Berg, Carl Fredrik (Peer reviewed; Journal article, 2024)Secondary recovery methods, such as water and gas injection, are effective and cost-efficient techniques for enhancing hydrocarbon recovery; however, they are highly energy-intensive, leading to a large environmental ... -
Energy efficiency of oil and gas production plant operations
Sutoyo, Handita Reksi Dwitantra; Angga, I Gusti Agung Gede; Schümann, Heiner; Berg, Carl Fredrik (Journal article; Peer reviewed, 2023)The exploitation of subsurface resources is an energy-intensive activity leading to substantial emissions. The main energy consumer for hydrocarbon production is gas compression and pumping. In this article, we investigate ... -
Experimental investigation of transitional oil-water pipe flow
Schümann, Heiner (Doctoral thesis at NTNU;2016:164, Doctoral thesis, 2016)In this thesis transitional oil-water pipe flow is experimentally studied. Here the word transitional relates to two main topics. First, the study focuses on the investigation of transitional flow patterns and resultant ... -
Experimental study of dispersed oil-water flow in a horizontal pipe with enhanced inlet mixing, Part 1: Flow patterns, phase distributions and pressure gradients
Schümann, Heiner; Tutkun, Murat; Yang, Zhi Lin; Nydal, Ole Jørgen (Journal article; Peer reviewed, 2016)The study demonstrates how a disturbance of the flow can affect the pressure gradient and further needs a considerable development length to recover. This is of importance for experimental studies as well as industrial ... -
Experimental study of dispersed oil-water flow in a horizontal pipe with enhanced inlet mixing, Part 2: In-situ droplet measurements
Schümann, Heiner; Tutkun, Murat; Nydal, Ole Jørgen (Journal article; Peer reviewed, 2016)Droplet size measurements in premixed oil-water flow are presented. Three traversable focused beam reflectance measurement probes (FBRM) positioned along the test section allowed for measuring averaged droplet size profiles ... -
Experiments and modelling of near-horizontal bubbly flow
Kjølaas, Jørn; Gonzalez Rengifo, Diana Carolina; Johansen, Krister Flåten; Schümann, Heiner (Peer reviewed; Journal article, 2023)This work aims to establish a fast and robust mechanistic model framework for predicting phase fraction profiles in bubbly flows. The main motivation is that the associated closure laws can in the future be used as a basis ... -
Methods for early-phase planning of offshore fields considering environmental performance
Eyni, Leila; Stanko Wolf, Milan Edvard; Schümann, Heiner (Peer reviewed; Journal article, 2022)Extraction and processing of oil and gas with current technologies is energy- and carbon-intensive as well as are the manufacture, transport and installation of the facilities needed for oil and gas production. Nowadays, ... -
Modelling of dispersed oil/water flow in a near-horizontal pipe
Kjølaas, Jørn; Schümann, Heiner; Gonzalez Rengifo, Diana Carolina; Johansen, Stein Tore (Journal article; Peer reviewed, 2022)A gravity-diffusion model was implemented for predicting water concentration profiles in dispersed oil-continuous oil–water flows. In this model, the measured droplet size distributions were used instead of a droplet size ... -
Pipe flow experiments of unstable oil-water dispersions with three different oil viscosities: Flow pattern, pressure drop and droplet size measurements
Gonzalez Rengifo, Diana Carolina; Schümann, Heiner; Kjølaas, Jørn (Peer reviewed; Journal article, 2022)The transport of oil-water dispersions in petroleum production pipelines is difficult to predict and requires special attention since it affects the performance of the entire system. For future field developments it is ... -
Sensitivity Wellbore Geometry Analysis of an Integrated Production Modelling Asset for a North Sea Conceptual Reservoir Model
Aldas Haro, Guido Anibal; Kianijoo, Shayan (Master thesis, 2023)Valget av brønnhullsgeometri og diameter spiller en avgjørende rolle for effektiv utvinning av hydrokarboner fra reservoarer, siden det direkte påvirker strømningsoppførselen og den endelige produksjonsytelsen. Den optimale ... -
Sensitivity Wellbore Geometry Analysis of an Integrated Production Modelling Asset for a North Sea Conceptual Reservoir Model
Aldas Haro, Guido Anibal; Kianijoo, Shayan (Master thesis, 2023)Valget av brønnhullsgeometri og diameter spiller en avgjørende rolle for effektiv utvinning av hydrokarboner fra reservoarer, siden det direkte påvirker strømningsoppførselen og den endelige produksjonsytelsen. Den optimale ...