Browsing OU - Dissertations by Author "Teodoriu, Catalin"
Now showing items 1-20 of 22
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Analysis and Control of Stick-Slip using a Scaled Experimental Drilling Rig
Sharma, Aditya (2023-08-04)Drilling is one of the most challenging and expensive processes involved in oil and gas production. Due to the destructive nature of the drilling process, dysfunctions are common during drilling. These dysfunctions can ... -
BARITE SAG UNDER DYNAMIC AND ELEVATED TEMPERATURE CONDITIONS: EXPERIMENTAL STUDIES AND MATHEMATICAL MODELING
Fakoya, Muili Feyisitan (2019-05-10)Barite sag is an undesired occurrence that causes density variation in the wellbore. It is a problem that is related to both fluid property (mainly rheology) and drilling practices, and it arises mostly in invert emulsion ... -
Constitutive Behavior of Wellbore Cement
Cedola, Alexandra (2023-05)Cement is one of the most integral components of a wellbore, yet minimal experimental research has been done to understand the basic processes as to what ensures a cement sheaths’ success. Globally, minimizing greenhouse ... -
The Contributions of Elvina Truman Pearce to Piano Pedagogy
Van Kekerix, Todd (2020-05)Elvina Truman Pearce (b. 1931) was a leading piano pedagogue in the twentieth and twenty-first century. This document presents perspectives on her wide-ranging work as a pianist, teacher, composer, and writer. Throughout ... -
CORROSION BEHAVIOR OF TUBULARS IN SOUR GAS ENVIRONMENT
Elgaddafi, Rida (2017)The existence of corrosive gases (CO2 and H2S) in oil wells under High-Pressure High-Temperature (HPHT) condition exacerbates the severity of tubular corrosion and increases the need for different corrosion mitigation ... -
Development of polymer gel systems for lost circulation treatment and wellbore strengthening
Magzoub, Musaab (2021-05-07)Lost circulation is a frequent problem and a significant contributor to the non-productive time (NPT) in the drilling operation. Field reports and experimental studies have revealed that conventional solutions are doomed ... -
DRAINAGE BEHAVIOR OF AQUEOUS, POLYMERIC, AND OIL-BASED NITROGEN FOAMS: THEORETICAL AND EXPERIMENTAL INVESTIGATION
Govindu, Abhishek (2019-08-01)Foams can be formulated to have a wide range of densities and viscosities. This unique behavior makes foam suitable for underbalanced drilling where pressure exerted on formation is maintained below pore pressure and at ... -
DYNAMIC DRILLING FLUIDS LOSS AND FILTRATION: IMPACT OF DYNAMIC WELLBORE CONDITIONS AND WELLBORE STRENGTHENING IMPLICATIONS
Ezeakacha, Chinedum Peter (2018-12-14)Lost circulation (drilling fluid loss) and mud filtration have been investigated over the years because they lead to non-drilling time (NDT) and increase the overall well cost. It is usually the first source of damage to ... -
THE EFFECT OF PORE SPACE ON FLUID FLOW AND PHASE BEHAVIOR IN TIGHT FORMATIONS
Salahshoor, Shadi (2019-05)Unconventional resources have led to a new abundance of natural oil and gas supply all over the world over the past decade and are expected to play a vital role in the future of this industry. Despite tremendous growth of ... -
Effects of restrictions and liquid properties on liquid loading in natural gas wells
Alsanea, Maziad (2022-12-08)Liquid loading is one of the main challenges in the later life of a natural gas well. Several methods have been used to unload the gas wells and remedy liquid loading, with various efficiencies. The literature revealed a ... -
EVALUATION OF LINER HANGER SEAL ASSEMBLY AND CEMENT SHEATH AS A DUAL BARRIER SYSTEM: IMPLICATIONS FOR INDUSTRY AND REGULATORS
Ahmed, Shawgi (2020-05-08)Robust dual barrier systems are crucial for well integrity. Regulators and industry have consistently raised the concerns in such systems regarding the testing, qualification, and prediction of leakage pathways and failure ... -
Experimental, analytical, and numerical investigations of gas leakage through annular cement
Al Ramadan, Mustafa (2020)Cementing operations present many difficulties worldwide attributable to shallow flows. Cement sheath integrity and durability play key roles in the oil and gas industry, particularly during the drilling and completion ... -
An Experimental, Modeling and Machine Learning Based Investigation of Stick-Slip Vibrations
Srivastava, Saket (2022-08-04)Drilling technologies have improved considerably since the first well drilled by Colonel E.L Drake in 1859. Drilling technologies enable us to safely drill complex well profiles with advanced downhole tools and sensors to ... -
Investigation of Hydraulic and Mechanical Cement Integrity: An Advanced Computational Study
Wu, Yuxing (2021)Cement sheath is a significant barrier to maintain the zonal isolation of wells, preventing severe consequences such as kick (or influx) accidents, environmental contaminations, and safety threats. Many previous investigations ... -
INVESTIGATION OF OILWELL CEMENT MIXING: EXPERIMENTAL STUDIES AND IMPLICATIONS FOR MIXING ENERGY THEORY
Karbalaei Saleh, Fatemeh (2018-05-11)Cement is a key element of wellbore integrity. Mixing condition for cement and how its properties are affected is of great importance but often ignored in the oilwell cement design. Typical cement slurry properties such ... -
Long term experimental investigation for leakage and permeability of the cement-casing microannulus
Al Ramis, Hussain (2021-05-14)The oil and gas industry is the primary provider of energy globally. Energy extraction from wells takes place through several stages, such as exploration, drilling and production, and then plugging and abandonment. The ... -
Multiscale, multiphysics modeling of subsurface engineering applications
Zapata Arboleda, Yuliana Maria (2020-12)Fluid flow, particle transport, and chemical reactions in porous media play a vital role in various disciplines, including hydrology, medicine, and engineering. In particular, in the petroleum industry, subsurface engineering ... -
STUDY OF FLUID DYNAMICS EFFECTS FOR LOSS OF WELL CONTROL INCIDENTS IN SUBSEA WELLS
Kiran, Raj (2019-05-10)The safety of well operations has become the focal point of the research paradigm since the Deepwater Horizon incident. The risks of wellbore blowouts cannot be neglected in any drilling operation, which makes the discharge ... -
Study towards improving the efficiency of matrix acidizing in oil-bearing carbonate formations
Elsafih, Mohamed Mustafa Elmabruk (2021-08)Matrix acidizing in carbonate formations is a common technique to improve well productivity. Since more than 60% of the world’s reservoir formations are carbonates, enhancing the process of acidizing can have a significant ... -
Testing, Characterization, And Analysis Of Class F Fly Ash Geopolymers Under Oilfield Testing Conditions
Devers, Cameron (2024-07)The oil and gas industry relies heavily on Ordinary Portland Cement (OPC) for wellbore integrity, but the limitations of OPC in extreme environments such as high temperatures and pressures have necessitated the exploration ...