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PhD fellowship in Fluid Mechanics
University of Stavanger
Ph.D fellowship in Fluid Mechanics
The University of Stavanger invites applicants for a Ph.D fellowship in Fluid Mechanics at the Faculty of Science and Technology, Department of Energy and Petroleum Engineering.
The research project will focus on the study of immiscible fluid displacement in annular geometries and is motivated by well construction cementing operations.
The postition is vacant from December 2020.
This is a trainee position that will give promising researchers an opportunity for academic development leading to a doctoral degree.
The appointment is for three years with research duties exclusively.
The research addresses primary cementing, a critical well construction operation that involves the displacement of oil- and water-based fluid pairs from the annulus between casings, or between casing and formation. Complete removal of the original fluid from the annulus to be cemented is recognized as an important success criterion for primary cementing operations; this means that inter-mixing of fluids and potential contamination of cement slurry should be reduced as much as possible.
This research project will focus on density-stable and density-unstable displacements in eccentric annuli using fluid pairs that are immiscible. Interfacial surface tension between pairs of fluids can significantly affect the front-dynamics and bulk displacement efficiency, while wetting properties of fluids can either promote or prevent removal of fluid wall layers. Contamination and residual wall layers can be detrimental to the quality of the cement as well barrier element and should be avoided as far as possible.
To better understand the importance of the above effects on eccentric annulus displacement mechanics, there is a need for both experiments and modelling efforts involving more realistic immiscible pairs of fluids. The main goal of this project is to improve our understanding related to immiscible displacement mechanics using a combination of experimental work, experimental analyses and mathematical modelling of such displacement flows.
Important sub-goals include:
Perform a systematic scaling analysis to identify optimal fluids and choice of flow loop geometry to ensure relevance to well construction conditions,
Develop experimental methods for studying and analyzing annulus displacement flows of pairs of immiscible fluids,
Identify main displacement regimes in the experiments (e.g. viscous, inertial, and transitionary displacements) and classify these regimes in terms of governing, dimensionless numbers (e.g. eccentricity, Reynolds number, Froude number, Capillary number etc.),
Perform modelling studies of immiscible displacement experiments, possibly including numerical investigations of other fluid parameter or geometry combinations.
The research is to a large extent motivated by primary cementing of casings but is also relevant for food and chemical processing industries as well as gravity-driven flows in nature.
We are looking for applicants with a strong academic background who have completed a five-year master degree (3+2) within physics, mathematics, computational sciences, petroleum engineering or other relevant natural science or engineering discipline, preferably acquired recently; or possess corresponding qualifications that could provide a basis for successfully completing a doctorate.
To be eligible for admission to the doctoral programmes at the University of Stavanger both the grade for your master’s thesis and the weighted average grade of your master’s degree must individually be equivalent to or better than a B grade.
Applicants with an education from an institution with a different grade scale than A-F should attach a confirmed conversion scale that shows how the grades can be compared with the Norwegian A-F scale.
The PhD candidate should possess knowledge and experience within preferably one or more of the following topics:
favourable membership terms at a gym and at the SIS sports club at campus
employment with an Inclusive Workplace organisation which is committed to reducing sick leave, increasing the proportion of employees with reduced working capacity, and increasing the number of professionally active seniors
as an employee in Norway, you will have access to an optimal health service, as well as good pensions, generous maternity/paternity leave, and a competitive salary. Nursery places are guaranteed and reasonably priced
relocation programme in event of moving to Norway, including support and language courses for spouses
The appointee will be based at the University of Stavanger, with the exception of a stay abroad at a relevant centre of research.
It is a prerequisite that the appointee has a residence which enables him or her to be present at/available to the academic community during ordinary working hours.
The University currently employs few female research fellows within this academic field, and women are therefore particularly encouraged to apply.
The position has been announced in both Norwegian and English. In the case of differences of meaning between the texts, the Norwegian text takes precedence.
More information on the position can be obtained from Associate Professor Hans Joakim Skadsem, tel: (+47) 957 52 843, e-mail: firstname.lastname@example.org or Professor Rune W. Time, e-mail: email@example.com.
Information about the appointment procedure can be obtained from HR advisor Margot A.Treen, tel: (+47) 51831419, e-mail: firstname.lastname@example.org.
To apply for this position please follow the link "Apply for this job". Register your application and CV including relevant education and work experience. In your application letter you must show your research interests and motivation to apply for the position.
The following documents must be uploaded as attachments to your application in separate files:
list of publications
other documentation that you consider relevant
The documentation must be available in either a Scandinavian language or in English. If the total size of the attachments exceeds 30 MB, they must be compressed before upload. Information and documentation to be taken into account in the assessment must be submitted within the application deadline.
Please note that applications are only evaluated based on the information available in JobbNorge at the application deadline. You should ensure that your application shows clearly how your skills and experience meet the criteria which are set out above.
UiS only considers applications and attachments registered in JobbNorge.
UiS - challenge the well-known and explore the unknown
The University of Stavanger (UiS) has about 12,000 students and 1,800 employees. The University is located in the third largest urban region in Norway, with a dynamic labor market and exciting cultural and leisure activities. We are the only Norwegian member of the European Consortium of Innovative Universities. The university has high ambitions. We will be a driving force in the development of knowledge in the region, and an international research university with an emphasis on innovation. Together with our staff and students, we will challenge the well-known and explore the unknown.
Department of Energy and Petroleum Engineering is part of the Faculty of Science and Technology. The department carries out research and offers study programs at all levels in Drilling Technology, Natural Gas Technology, Petroleum Engineering and Energy Technology. The department has established close research collaboration with the Norwegian Research Centre AS (NORCE) and the oil industry. The department focuses on internationalization, with development of English lingual study programs and high mobility among academic staff and students. There are currently 90 employees including research fellows and postdocs, and 750 students at the department.