Blar i UiS Brage på forfatter "Khalifeh, Mahmoud"
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Potential Utilization of Rock-based Geopolymers for Cementing of Geothermal Wells
Mendoza Herrera, Mariel Alejandra (Master thesis, 2021)Nowadays, the reserves of fossil fuels are running low due to the large consumption. Some few start getting interested in a type of energy that is long-lasting and free of polluting emissions, and that can be found right ... -
Potential Utilization of Settled Barite as Permanent Barrier Material
Kljucanin, Arnela (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-14)The focus on permanent Plug and Abandonment (P&A) has increased the last few years, due to aging infrastructure of many of the fields on the Norwegian Continental Shelf (NCS). Permanent P&A introduces significant expenses ... -
Retarding mechanism of Zn2+ species in geopolymer material using Raman spectroscopy and DFT calculations
Chamssine, Fawzi; H.S. Gasparotto, Luiz; Angelo Fonsecade Souza, Miguel; Khalifeh, Mahmoud; Cezar de Oliveira Freitas, Julio (Peer reviewed; Journal article, 2022)Geopolymers are the most promising alternative to Ordinary Portland Cement for oil-well cementing and well abandonment. To that end, the slurry needs a required pumping time ensured by the addition of retarders. Although ... -
Revealing the Effect of Superplasticizers on Viscosity and Yield Stress of Geopolymers
Hjelm, Sondre (Bachelor thesis, 2022)Ordinary Portland cement has for a long time been the prime material used in well cementing, zonal isolation and permanent well abandonment. Cement is considered a necessity in the oil and gas industry for providing zonal ... -
Review on Geopolymers as Wellbore Sealants: State of the Art Optimization for CO2 Exposure and Perspectives
Hajiabadi, Seyed Hasan; Khalifeh, Mahmoud; Van Noort, Reinier; Silva Santos Moreira, Paulo Henrique (Peer reviewed; Journal article, 2023-06)Wellbores used in underground production and storage activities, including carbon capture and storage (CCS), are typically sealed using sealants based on Ordinary Portland Cement (OPC). However, leakage along these seals ... -
Rheological Compatibility of a Hardening Spacer Fluid and Oil-based Drilling Fluid
Khalili, Pouya; Khalifeh, Mahmoud; Saasen, Arild; Naccache, Monica (Peer reviewed; Journal article, 2023-08)In the placement process of the cement slurry, treatment fluids such as the spacer are pumped ahead of the cementitious slurry to minimize the contamination of the slurry by drilling fluid and ensure superior bonding to ... -
Temperature-Dependent Classification of Geopolymers Derived from Granite Designed for Well Cementing Applications
Khalifeh, Mahmoud; Chamssine, Fawzi; Agista, Madhan Nur (Peer reviewed; Journal article, 2023)Alternative materials such as geopolymers appear to have potential advantages compared to Portland cement. However, the application of geopolymers for all sections of the well is still a major challenge due to the difference ... -
Theoretical Study on Utilization of X-ray Techniques for Verification of Casing Cement
Haddad, Muhammad Yasser (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06)Establishing a hydraulic seal that prevents flow is the primary objective of any cement job, as it is essential throughout the life of a well. Evaluation of the cement in the annulus must be done to verify its quality. ... -
Understanding Leakage Rates in Permanently Abandoned Wells by Studying Natural Hydrocarbon Seepages
Tveit, Mari Røstvig (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)Permanent plug and abandonment (PP&A) of wells is steadily becoming more important on the Norwegian Continental Shelf (NCS), as a large number of fields are approaching end of their productive life. Combining operational, ... -
Use of the Quemada Model for Modelling Viscous Behaviour of Drilling Fluids.
Knutsen, Sandra (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-15)Drilling fluids are essential for drilling operations and serve many important functions. To maintain control of the wellbore, while ensuring sufficient cutting transportation, good understanding of the rheological properties ... -
Using ceramic discs to evaluate fluid loss and formation damage
Trodal, Vegard (Bachelor thesis, 2021)To prevent kicks and possible blowout of the well, the pressure from the drilling fluid must be kept above the pore pressure of the formation. This differential pressure forces the fluid into the porous formation, which ... -
Wall Temperature Analyses of Sandwiches Sections Using Infrared Thermography to Evaluate Micro-Annuli size
Rosero, Robert (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-15)This study mainly focuses on the detection and characterization of micro-annuli at the interface of cement and casing, usually caused by changes in pressure, temperature, or volume change of zonal isolation material. For ... -
Zonal Isolation Material for Low-Temperature Shallow-Depth Application: Evaluation of Early Properties Development
Agista, Madhan Nur; Khalifeh, Mahmoud; Saasen, Arild; Yogarajah, Elakneswaran (Peer reviewed; Journal article, 2023)Shallow-depth cementing presents unique challenges due to its low temperature and low pore pressure characteristic. The curing process of the cementitious material is typically prolonged at low temperatures resulting in a ...