Browsing Department of Energy and Petroleum Engineering (TN-IEP) by Author "Saasen, Arild"
Now showing items 21-40 of 50
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Experimental Bench-Scale Study on Cuttings-Bed Erosion in Horizontal Wells
Pedrosa Consicion, Herman Camilo; Lund, Bjørnar; Opedal, Nils van der Tuuk; Ytrehus, Jan David; Saasen, Arild (Peer reviewed; Journal article, 2022)Cuttings-beds formation while drilling wellbores is a common challenge, especially for horizontal wells, as drilled particles have higher area to be deposited and form cuttings-beds, which can cause several problems such ... -
Experimental Study of Hydraulic Sealability and Shear Bond Strength of Cementitious Barrier Materials
Kamali, Mohammadreza; Khalifeh, Mahmoud; Eid, Elsayed; Saasen, Arild (Peer reviewed; Journal article, 2021-06)In this experimental study, two different cementitious materials, including (i) a class of expansive cement currently used for plug and abandonment (P&A) operations and (ii) a non-cement-based naturally occurring rock, ... -
The fate of hydrocarbon leaks from plugged and abandoned wells by means of natural seepages
Tveit, Mari Røstvig; Khalifeh, Mahmoud; Nordam, Tor; Saasen, Arild (Peer reviewed; Journal article, 2020-10)When a well reaches the end of its productive life, it is permanently plugged and abandoned. Even though new technology and verification methods are being evaluated, it is evident that operational, barrier material and ... -
The Fundamental Principles and Standard Evaluation for Fluid Loss and Possible Extensions of Test Methodology to Assess Consequences for Formation Damage
Klungtvedt, Karl Ronny; Saasen, Arild; Vasshus, Jan Kristian; Trodal, Vegard Bror; Mandal, Swapan Kumar; Berglind, Bjørn; Khalifeh, Mahmoud (Peer reviewed; Journal article, 2021-04)Industry testing procedures such as ANSI/API 13B-1 describe a method for measuring fluid loss and studying filter-cake formation against a medium of either a filter paper or a porous disc, without giving information about ... -
Fundamentals and physical principles for drilled cuttings transport – Cuttings bed sedimentation and erosion
Pedrosa, Camilo; Saasen, Arild; Ytrehus, Jan David (Peer reviewed; Journal article, 2021)The increasing necessity of challenging wellbore structures and drilling optimization for improved hole cuttings cleaning has been growing along time. As a result, operator companies have been researching and applying ... -
Gel Pills for Downhole Pressure Control during Oil and Gas Well Drilling
Khalifeh, Mahmoud; Penkala, Larisa; Saasen, Arild; Aase, Bodil; Omland, Tor Henry; Taugbøl, Knut; Reinås, Lorents (Peer reviewed; Journal article, 2020)During drilling of petroleum or geothermal wells, unforeseen circumstances occasionally happen that require suspension of the operation. When the drilling fluid is left in a static condition, solid material like barite may ... -
Hole cleaning and wet-granular rheology of rock cutting beds: Impact of drilling fluid composition
Pedrosa, Camilo; Saasen, Arild; Ytrehus, Jan David (Peer reviewed; Journal article, 2022)Cuttings-beds formation is an issue that must be considered during all wellbore drilling operations. This problem increases at highly deviated or horizontal wells, where cuttings removal efficiency becomes one of the most ... -
Hydraulic Behavior in Cased and Open Hole Sections in Highly Deviated Wellbores
Ytrehus, Jan David; Lund, Bjørnar; Taghipour, Ali; Kosberg, Birgitte Ruud; Carazza, Luca; Gyland, Knud Richard; Saasen, Arild (Chapter, 2019)In this paper we present results from flow loop experiments with an oil-based drilling fluid with micronized barite as weight materials. The use of micronized barite allows using lower viscosity drilling fluid, providing ... -
Input Selection for Dimensionless Shear Rates in Herschel-Bulkley and Power-Law Models
Brasileiro, Raoni (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)Herschel-Bulkley and Power-Law models are mathematical expressions widely used to describe the pseudoplastic nature of drilling muds. Despite their popularity, these models carry an intrinsic limitation because the consistency ... -
Instituting Retarders for Geopolymers Developed for Downhole Applications
Chamssine, Fawzi (PhD Theses;699, Doctoral thesis, 2023)Geopolymers are a cementitious material that has been under study for many years. The material is noticed as a potential full replacement for traditional cementitious material both in construction and petroleum industry. ... -
Invasion of CaCO3 particles and polymers into porous formations in presence of fibres
Klungtvedt, Karl Ronny; Saasen, Arild (Peer reviewed; Journal article, 2022)Formation damage can occur through migration of drilling fluid particles and polymers into porous formations. A methodology for assessing formation damage was applied to measure invasion of CaCO3 and polymers into porous ... -
Materials for Well Integrity: Performance of Setting Materials for Well Cementing Operation
Kamali, Mohammadreza (PhD thesis UiS;642, Doctoral thesis, 2022-05)Primary cementing operation is the process of pumping and placing a cementitious slurry in a well. After setting, the so-called barrier material has to provide zonal isolation in the annular gap behind casing string. After ... -
Measuring filter-cake cohesive strength and flowability
Klungtvedt, Karl Ronny; Pedrosa, Camilo; Saasen, Arild (Peer reviewed; Journal article, 2022)The filter-cake has a critical role in temporarily reducing the permeability of the wellbore to prevent issues such as lost circulation, formation damage, wellbore collapse and differential sticking. The filter-cake's ... -
Measuring the Magnetic Content of Drilling Fluid
Khalili, Pouya (Master thesis, 2021)Magnetic contamination of drilling fluid can impact the accuracy of the directional surveying by shielding the magnetic field. Additionally, this contamination, such as swarf or finer magnetic particles, can agglomerate ... -
A method for assessing drilling fluid induced formation damage in permeable formations using ceramic discs
Klungtvedt, Karl Ronny; Saasen, Arild (Peer reviewed; Journal article, 2022)When drilling an oil and gas or geothermal well, the formation's ability to produce or flow may be reduced because of exposure to the drilling fluid during the drilling operation. To evaluate such formation damage, core ... -
New method for measuring viscosity of mixtures of two fluids
Slettebø, Jon Kristian (Bachelor thesis, 2023)When executing a drilling operation in a well, rheological properties are important to understand in order to have the most error- and problem-free drilling operation as possible. Drilling fluids such as mud, spacer and ... -
Oil-based drilling fluid's cuttings bed removal properties for deviated wellbores
Ytrehus, Jan David; Lund, Bjørnar; Taghipour, Ali; Carazza, Luca; Gyland, Knud Richard; Saasen, Arild (Peer reviewed; Journal article, 2021)Results from cuttings transport tests in the laboratory using different field-applied oil-based drilling fluids with similar weight and varying viscosities are presented in this paper. The fluids are designed for highly ... -
Optimizing formulations for reservoir drilling fluids
Bergsvik, Ine Skartveit (Bachelor thesis, 2022)When drilling a well, equivalent circulation density exceeding the fracture gradient can cause lost circulation. In a reservoir section, invasion of drilling fluids can potentially cause a permanent permeability reduction ... -
Plug & abandonment of offshore wells: Ensuring long-term well integrity and cost-efficiency
Vrålstad, Torbjørn; Saasen, Arild; Fjær, Erling; Øia, Thomas; Ytrehus, Jan David; Khalifeh, Mahmoud (Peer reviewed; Journal article, 2019-10)There is an upcoming "P&A wave" of wells that need to be permanently plugged and abandoned, especially in mature, offshore areas such as the North Sea and Gulf of Mexico. It is important to ensure that plugged wells do not ... -
Recent developments in hole cleaning technology in deviated well bores for geothermal and petroleum
Gåseland Bekkevik,Sindre (Bachelor thesis, 2022)This paper is looking on recent developments in hole cleaning technologies and how recent advancements can be used to aid efficient hole cleaning in deviated wells. Successful hole cleaning relies upon integrating optimum ...