Browsing UiS Brage by Author "Khalifeh, Mahmoud"
Now showing items 1-20 of 56
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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 ... -
Advantages and Current Limitation of One-Part Geopolymers Developed for O&G Industry: Apple-to-Apple Comparison
Berg Sylte, Ole (Bachelor thesis, 2023)The development of geopolymers for use in the oil and gas industry has gained significant recognition in recent years due to the pressing need for sustainable and environmentally friendly alternatives in the sector. The ... -
Aging and Temperature Effects on the Performance of Sustainable One-Part Geopolymers Developed for Well-Cementing Applications
Omran, Mohamed; Khalifeh, Mahmoud; Paiva, Maria (Peer reviewed; Journal article, 2023)This study elucidates the effects of aging and temperature over the performance of one-part “just add water” (JAW) granite-based geopolymers for application in well cementing and well abandonment. Additionally, the ... -
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 ... -
Application of non-parametric statistical methods to predict pumpability of geopolymers for well cementing
Hamie, Hassan; Hoayek, Anis; El-Ghoul, Bassam; Khalifeh, Mahmoud (Peer reviewed; Journal article, 2022)As a potential alternative to Portland cement, geopolymers are getting wider acceptance in the scientific world. On a laboratory scale, the latter is being experimented repeatedly to extract valuable and valid results. To ... -
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, ... -
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 ... -
Characterization of the mud displacement in an enlarged wellbore: An integrated rock-fluid model
Wu, Yuxing; Salehi, Saeed; Khalifeh, Mahmoud (Peer reviewed; Journal article, 2022)Cement-mud displacement plays a crucial role in the sealability of cement sheaths. Irregular geometric features of a wellbore due to washout can have a negative impact on mud and cement mobilization. An unstable interface ... -
Controlling Pumpability of Geopolymers for Downhole Placement
Bayati, Aida (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-14)Ordinary Portland cement (OPC) is the prime material used to manufacture concrete and as a barrier material in well construction. Cement has its own advantages such as pumpability, setting, bonding to steel and formation, ... -
Design and Early Age Performance of Sustainable One-Part Geopolymers for Well Cementing
Omran, Mohamed; Pavia, Maria; Khalifeh, Mahmoud (Peer reviewed; Journal article, 2023-10)One-part geopolymers, known as “just add water” (JAW), alkali-activated formulation is presented in this work. This work reveals the design and development of short-term properties of JAW geopolymers for use in oilwell ... -
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 ... -
Development of One-Part Rock-Based Geopolymers for Downhole Cementing Applications
Omran, Mohamed; Khalifeh, Mahmoud (Peer reviewed; Journal article, 2023-10)The use of geopolymers as a full replacement for cement in oil well cementing applications requires the development of not only environmentally friendly but also user-friendly cementitious materials. This study aims to ... -
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 ... -
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 ... -
Effect of nanoparticles on properties of geopolymers designed for well cementing applications
Alvi, Muhammad Awais Ashfaq; Khalifeh, Mahmoud; Agonafir, Mesfin Belayneh (Peer reviewed; Journal article, 2020)Recently the focus of the oil and gas industry is to find the alternative material for well barrier applications. Geopolymers are among the suggested materials, which could be used in the future to solve the well integrity ... -
Effect of Organic Retarders on Fluid-State and Strength Development of Rock-Based Geopolymer
Kamali, Mohammadreza; Khalifeh, Mahmoud; Samarakoon, Mudiyansele Samindi Manjula K; Salehi, Saeed; Wu, Yuxing (Chapter, 2023)Granite waste is rich in aluminum and silicate has the potential of turning to geopolymer material after mixing with an alkali solution. One of the challenges in developing a geopolymer is to select a suitable retarder to ... -
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 ... -
Expanding the Well Intervention Scope for an Effective P&A Operation
Wittberg, Stian André (Master thesis, 2017-06-14)Over 2500 wells on the Norwegian Continental Shelf (NCS) will at some point have to be permanently plugged and abandoned. As the drill rig rate contributes to 40-50% of the total plug and abandonment (P&A) cost, the potential ...