Blar i Department of Energy and Petroleum Engineering (TN-IEP) på forfatter "Klungtvedt, Karl Ronny"
-
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ...