Blar i UiS Brage på forfatter "Saasen, Arild"
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A Study of the Effect of Pressure and Temperature on the Mechanical Friction of Four Different Fluids Using a Specially Designed Setup
Ghaedi, Parisa (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)The mechanical friction caused by the contact between the rotating drillstring and the borehole or casing can lead to significant challenges such as excessive torque and drag, limitation in running speed of drillstring and ... -
Alternative setting materials for primary cementing and zonal isolation – Laboratory evaluation of rheological and mechanical properties
Kamali, Mohammadreza; Khalifeh, Mahmoud; Saasen, Arild; Godøy, Rune; Delabroy, Laurent (Peer reviewed; Journal article, 2021)Portland cement is the prime zonal isolation material used in hydrocarbon wells and its utilization has been extended to geothermal, carbon sequestration and gas storage wells. Despite the vast quantity of research activities ... -
Annular frictional pressure losses for drilling fluids
Saasen, Arild; Ytrehus, Jan David; Lund, Bjørnar (Peer reviewed; Journal article, 2020)In the paper it is demonstrated how a Herschel-Bulkley fluid model, where the parameters are selected from relevant shear rate range of the flow and are parametrically independent, can be used for pressure loss calculations. ... -
Annular frictional pressure losses for drilling fluids
Saasen, Arild; Ytrehus, Jan David; Lund, Bjørnar (Peer reviewed; Journal article, 2021)In the paper, it is demonstrated how a Herschel–Bulkley fluid model, where the parameters are selected from relevant shear rate range of the flow and are parametrically independent, can be used for pressure loss calculations. ... -
Application of the quemada viscosity model for drilling fluids
Knutsen, Sandra; Cayeux, Eric; Saasen, Arild; Khalifeh, Mahmoud (Chapter, 2021)A number of different models are used to describe the shear rate dependent viscosity of drilling fluids. Most, such as the Herschel-Bulkley model, have a purely empirical basis. The Quemada model, while still empirical, ... -
Assessment of Yield Stress in Oil-Based Drilling Fluids
Ytrehus, Jan David; Feneuil, Blandine Fleur Prudence; Saasen, Arild (Peer reviewed; Journal article, 2023)Yield stress is commonly used to describe the rheological properties of drilling fluids. There are various methods to define such yield stress. Some approaches provide yield stress values sufficient to derive a proper fluid ... -
Barite Sag Settling measurement techniques – direct method
Rezaei, Milad (Master thesis, 2021)One of the main roles of drilling fluid is controlling the downhole pressure. Weighting materials are employed in drilling fluid for this aim. Barite is the most common agent, which is used for increasing density. There ... -
Bonding Mechanism of Zonal Isolation Materials to Clean and Rusted Casing
Kamali, Mohammadreza; Khalifeh, Mahmoud; Saasen, Arild (Peer reviewed; Journal article, 2022)In oil and gas and geothermal well construction, a cementitious material is pumped in the wellbore to provide zonal isolation and support the casing during the life cycle of the well. Thus, the cementitious barrier materials ... -
Cement Placement: An Overview of Fluid Displacement Techniques and Modelling
Foroushan, Hanieh K.; Lunde, Bjørnar; Ytrehus, Jan David; Saasen, Arild (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 ... -
Comparison of Lost Circulation Material Sealing Effectiveness in Water-Based and Oil-Based Drilling Fluids and Under Conditions of Mechanical Shear and High Differential Pressures
Klungtvedt, Karl Ronny; Saasen, Arild (Peer reviewed; Journal article, 2022)A study was conducted to assess the performance of granular and fibrous lost circulation materials as preventative treatments and in remedial treatment of lost circulation in water-based and oil-based drilling fluids. For ... -
Concentric cylinder viscometer flows of Herschel-Bulkley fluids
Skadsem, Hans Joakim; Saasen, Arild (Peer reviewed; Journal article, 2019)Drilling fluids and well cements are example non-Newtonian fluids that are used for geothermal and petroleum well construction. Measurement of the non-Newtonian fluid viscosities are normally performed using a concentric ... -
Cuttings transport with oil- and water-based drilling fluids
Ytrehus, Jan David; Lund, Bjørnar; Taghipour, Ali; Saasen, Arild (Chapter, 2021)Deviated well sections are common in modern well construction. In mature areas like the North Sea region, practically all producers or injector wells will have highly deviated sections. These wells must be drilled and ... -
Development and Characterization of a Pressure Transmitting Sag Prevention Gel Pill
Penkala, Larisa Sonja (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-08)Barite sag is a risky phenomenon to manage as particle settlement occurs in all types of drilling fluids containing weighting agents’ materials to achieve density. This leads to the phenomenon of sag which is known to ... -
Development and Characterization of Norite-Based Cementitious Binder from an Ilmenite Mine Waste Stream
Khalifeh, Mahmoud; Saasen, Arild; Larsen, Helge Bøvik; Hodne, Helge (Journal article; Peer reviewed, 2017-08)Norite is a major type of solid waste generated during the production of ilmenite. This study focuses on the usability of norite as a solid precursor of alkali-activated cement. Sensitivity analysis was performed to find ... -
Drilling Fluid Additives for Wellbore Strengthening and Reservoir Protection
Klungtvedt, Karl Ronny (PhD Theses;726, Doctoral thesis, 2023)The objective of the research was to optimise drilling fluid additives for wellbore strengthening, preventing lost circulation and avoiding drilling fluid induced formation damage. Industry standard testing, such as HTHP ... -
Economical Feasibility of Offshore Geothermal Energy on the NCS
Schaathun, Sander (Master thesis, 2023)The demand for renewable energy is increasing. Geothermal energy is a type of renewable energy that exploits the natural heat of the earth’s core. Drilling new wells for geothermal purposes could be costly and challenging ... -
Effect of Calcium Expansive Additives on the Performance of Granite-Based Geopolymers for Zonal Isolation in Oil and Gas Wells
Gomado, Foster Dodzi; Khalifeh, Mahmoud; Saasen, Arild; Kjøniksen, Anna-Lena; Sanfelix, Susana; Aasen, Jan Aage (Peer reviewed; Journal article, 2023)Geopolymers have emerged as a promising alternative to Portland cement for oil and gas wells. Achieving effective zonal isolation by use of geopolymers may require controlling their expansion. This study investigates the ... -
The Effect of Different Drilling Fluids on Mechanical Friction
Ytrehus, Jan David; Taghipour, Ali; Golchin, Arash; Saasen, Arild; Prakash, Braham (Peer reviewed; Journal article, 2017)A very important aspect in highly inclined wellbores is the mechanical friction. For extended reach drilling (ERD) and through tubing extended reach drilling (TTERD) this can be a limiting factor. Friction caused by the ... -
The Effect of Lost Circulation Material on Herschel-Bulkley Parameters
Sele, Karoline Gjestland; Vrålstad, Jorunn Hamre; Klungtvedt, Karl Ronny; Saasen, Arild (Peer reviewed; Journal article, 2023)To hinder loss of drilling fluids into downhole formations while drilling geothermal, CO2 injection or petroleum wells, Lost Circulation Material (LCM) is added to the drilling fluids. These materials consist of many ... -
Effect of Zn2+ and K+ as Retarding Agents on Rock-Based Geopolymers for Downhole Cementing Operations
Chamssine, Fawzi; Khalifeh, Mahmoud; Saasen, Arild (Peer reviewed; Journal article, 2022)Geopolymer material has a potential to function alongside Portland Cement as an efficient cementitious material for well cementing and plug and abandonment applications. Geopolymer material requires retarding agents to be ...