Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.788426
Title: Modification and modelling of oil well cementitious system performance
Author: Amucheazi, Nosike
ISNI:       0000 0004 8498 4819
Awarding Body: University of South Wales
Current Institution: University of South Wales
Date of Award: 2018
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Abstract:
The formulation of an oil well cementitious system is in general more complex than that of conventional cementitious systems for constructing roads, dams, houses, and bridges. To cement an oil well, various types of cement and admixtures are employed in formulating the oil well cementitious system. This is to achieve satisfactory performance that will contend with geological conditions and render required functions in the oil well. However, the pursued performance is dependent on the properties and dosages of the materials used in formulating the system, thereby making it a difficult task. Thus, the formulation of an oil well cementitious system requires several tests, materials, time and cost in order to achieve satisfactory performance for cementing an oil well. Additionally, there is a growing pressure for the use of environmental friendly technologies across the globe due to environmental issues. Portland cement types conventionally used for oil well cementing is one of such polluting and devastating technology to the environment. The production of Portland cement entails the use of high energy, natural resources and release of carbon dioxide (CO2) which contributes to global warming and affects the environment. As such; alternatives to reduce the adverse impact of cement to the environment are demanded of organisations, prompting the need to pursue desired performance of oil well cementitious systems for oil well contructions while also addressing the environmental concern. The present research set out to achieve the desired performance of an oil well cementitious system through modification using admixtures and modelling using a mathematical approach. The research study addresses the mechanisms that influence the performance of oil well cementitious system, the impact of admixtures (mineral and chemical admixtures) and the potential of a mathematical model to predict the performance of oil well cementitious system. The modification of the oil well cementitous system using particular admixtures which include Metakoalin, Pulverised fuel ash and Superplasticizer and their combinations which is a new attempt in the modification of oil well cementious systems offers both performance and environmental benefits for cementing in the construction of oil wells. The development of a predictive model, which is a key innovation in the current research, endeavours to simplify and reduce the time, number of tests, materials and cost to formulate and achieve an oil well cementitous system of desired performance for well construction.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.788426  DOI: Not available
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