PhD Fellowship in Experimental rheology for the characterization and modeling of industrial fluids

University of Stavanger
January 01, 2023
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PhD Fellowship in Experimental rheology for the characterization and

modeling of industrial fluids

Job description

The University of Stavanger invites applicants for a PhD Fellowship in Experimental rheology for the characterization and modeling of industrial fluids at the Faculty of Science and Technology, Department of Energy & Petroleum Engineering. The position is vacant from February 2023.

This is a trainee position that will give promising researchers an opportunity for academic development through a PhD education leading to a doctoral degree.

The hired candidate will be admitted to the PhD program in Science and Technology. The education includes relevant courses amounting to about six months of study, a dissertation based on independent research, participation in national and international research environments, relevant academic communication, a trial lecture and public defence. Read more about the PhD education at UiS on our website.

The appointment is for three years with research duties exclusively.

Research topic

The PhD Fellow will be affiliated with a project where the objective is to improve the prediction of how viscosity and flow/deformation properties (rheological properties) of complex fluids, like drilling muds, change for changes in temperature and pressure.

The motivation for this work is that knowledge of the development of drilling fluid properties as drilling operations progress is important for safe and efficient drilling. Field measurements of drilling fluid viscosity and rheological properties are further normally carried out at atmospheric pressure and situation-dependent temperature on the rig. Since the viscosity and rheological properties of most drilling muds are sensitive to both pressure and temperature (P&T), extrapolation of these properties to downhole conditions is necessary for making accurate hydraulic calculations. Such extrapolation to higher pressures and higher or lower temperatures is generally mud-specific and largely unknown, especially for modern mud systems. This is considered as one of the biggest challenges when it comes to making accurate flow models and realistic predictions of downhole circulating pressures today.

Drilling mud systems in use today are composed of a base fluid and a number of additives that significantly affect the viscosity and rheological properties of the fluid. Since these additives can be combined in different ways and with different amounts, the number of unique mud formulations is in practice infinite. Therefore, to be able to predict the behaviour of a specific mud system, the idea for this research work is to measure and analyse the effect each relevant component has on viscosity and rheological properties. This means that the effect of different amounts of the various components alone should be analysed, as well as the combined effect of typical combinations of the additives.

Experimental measurements are expected to be performed with advanced rheometers available at the University of Stavanger. Other specialized measurement techniques will be evaluated for characterizing fluid flow properties under high pressures and temperatures. The result of these measurements, acquired at relevant P&T conditions, will be analysed with the aim to describe quantitatively/mathematically how the fluid properties change with P&T for different compositions of the liquid. Physics-based models or more empirical correlations/equations will be considered for the quantification.

The project will collaborate with internationally leading experts within rheology and modelling of non-Newtonian fluids at the Pontifical Catholic University of Rio de Janeiro (PUC-Rio). An exchange stay at PUC-Rio is tentatively planned for a period of the PhD project.

The results of this work will be directly useful for companies that work with modelling/automation of drilling operations, but potentially also for other industries that use similar components in fluid systems to obtain specific liquid properties.

Qualification requirements

We are looking for applicants with a strong academic background who have completed a five-year master degree (3+2) within petroleum technology, energy/reservoir/geoscience, chemistry, physics, mathematics, cybernetics or marine/offshore technology, preferably acquired recently; or who 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. If you finish your education (masters degree) in the spring of 2023 you are also welcome to apply.

Applicants with an education from an institution with a different grade scale than A-F, and/or with other types of credits than sp/ECTS, must attach a confirmed conversion scale that shows how the grades can be compared with the Norwegian A-F scale and a Diploma Supplement or similar that explains the scope of the subjects that are included in the education. You can use these conversion scales to calculate your points for admission.T

The following selection criteria will be emphasized:

  • Desire and ability to work with practical tasks in the laboratory, which may include mixing components in liquids as well as the use of technological instruments such as viscometers
  • Strong analytical skills, among other things in terms of uncovering patterns and trends in measurement data as well as describing these using mathematical models
  • Strong academic background within fluids and/or materials
  • The ability to link theory to practice
  • Experience within material/viscosity characterization and non-Newtonian fluids such as polymeric liquids or drilling fluids
  • Knowledge/experience in programming and/or modelling of flow and deformation properties of non-Newtonian fluids
  • Emphasis is also placed on your:

  • motivation and potential for research within the field
  • professional and personal skills for completing the doctoral degree within the timeframe
  • ability to work independently and in a team, be innovative and creative
  • ability to work structured and handle a heavy workload
  • having a good command of both oral and written English
  • Requirements for competence in English

    A good proficiency in English is required for anyone attending the PhD program. International applicants must document this by taking one of the following tests with the following results:

  • TOEFL – Test of English as a Foreign Language, Internet-Based Test (IBT). Minimum result: 90
  • IELTS – International English Language Testing Service. Minimum result: 6.5
  • Certificate in Advanced English (CAE) or Certificate of Proficiency in English (CPE) from the University of Cambridge
  • PTE Academic – Pearson Test of English Academic. Minimum result: 62
  • The following applicants are exempt from the above requirements:

  • Applicants with one year of completed university studies in Australia, Canada, Ireland, New Zealand, United Kingdom, USA
  • Applicants with an International Baccalaureate (IB) diploma
  • Applicants with a completed bachelor's and / or master's degrees taught in English in a EU/EEA country
  • We offer
  • a PhD education in a large, exciting and societally important organisation
  • an ambitious work community which is developing rapidly. We strive to include employees at all levels in strategic decisions and promote an informal atmosphere with a flat organisational structure.
  • salary in accordance with the State Salary Scale, l.pl 17.515, code 1017, NOK 501 200 gross per year with salary development according to seniority in the position. In special cases a higher salary may be considered. From the salary, 2% is deducted as a contribution to the Norwegian Public Service Pension Fund.
  • automatic membership in the Norwegian Public Service Pension Fund, which provides favourable insurance- and retirement benefits
  • 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
  • "Hjem-jobb-hjem" discounted public transport to and from work
  • 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
  • language courses: On this page you can see which language courses you may be entitled to (look up “language courses” under employment conditions)
  • Diversity

    University of Stavanger values independence, involvement and innovation. Diversity is respected and considered a resource in our work and learning environment. Universal design characterises physical and digital learning environments, and we strive to provide reasonable adjustments for employees with disabilities.

    You are encouraged to apply regardless of gender, disability or cultural background.

    The university aims to recruit more women within the subject area. If several applicants are considered to have equal qualifications, female applicants will be given priority.

    Contact information

    More information on the position (and project description) can be obtained from head of department Øystein Arild, e-mail: oystein.arild@uis.no or Associate Professor Kristian Gjerstad, tel: +47 92807937, e-mail: alf.k.gjerstad@uis.no.

    Information about the appointment procedure can be obtained from HR-advisor Margot Amelia Treen, tel: +47 51831419, e-mail: rekruttering@uis.no.

    Application

    To apply for this position please follow the link "Apply for this job". Your application letter, relevant education and work experience as well as language skills must be registered here. In your application letter, you must state your research interests and motivation for the position.

    The following documents must be uploaded as attachments to your application:

  • CV with a full summary of your education and experience
  • references, certificates/diplomas and other documentation that you consider relevant
  • Diploma Supplement or similar and a confirmed conversion scale if this is required
  • documentation on competence in English if this is required
  • publications or other relevant research work
  • Applications are 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 and that you have attached the necessary documentation.

    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.

    Please note that information on applicants may be published even if the applicant has requested not to be included in the official list of applicants - see Section 25 of the Freedom of Information Act. If your request is not granted, you will be notified.

    UiS only considers applications and attachments registered in Jobbnorge.

    General information

    The engagement is to be made in accordance with the regulations in force concerning State Employees and Civil Servants, and the acts relating to Control of the Export of Strategic Goods, Services and Technology. If your application is considered to be in conflict with the criteria in the latter legislation, it will be rejected without further assessment.

    Employment as PhD Fellow is regulated in "Regulations concerning terms and conditions of employment for the posts of post-doctoral research fellow and research fellow, research assistant and resident".

    Your qualifications for the position, based on documentation registered in Jobbnorge, will be assessed by an internal expert committee. Based on the committee's statement, relevant applicants will be invited to an interview before any recommendations are made. References will also be obtained for relevant candidates. More about the hiring process on our website.

    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 you have a residence which enables you to be present at/available to the academic community during ordinary working hours.

    The position has been announced in both Norwegian and English. In the case of differences of meaning between the texts, the English text takes precedence.

    UiS - challenge the well-known and explore the unknown

    The University of Stavanger (UiS) has about 12,000 students and 2,200 employees. The university has high ambitions. We strive to have an innovative and international profile, and be a driving force in knowledge development and in the process of societal change. Our common direction is driven by consideration for green and sustainable change and equitable social development, through new ways of managing natural resources and facilitating better cities and local communities. Energy, health and welfare, learning for life are our focus areas.

    In constant collaboration and dialogue with our surroundings, regionally, nationally and internationally, we enjoy an open and creative climate for education, research, innovation, dissemination and museum activities. Academic life at the University of Stavanger is organised into six faculties comprising various departments/schools and National Research Centres, as well as the Museum of Archaeology. We are a member of the European Consortium of Innovative Universities. The university is located in the most attractive region in the country with more than 300,000 inhabitants. The Stavanger region has a dynamic labour market and exciting cultural and leisure activities.

    Together with our staff and students we will challenge the well-known and explore the unknown.

    The Faculty of Science and Technology offers study programs at bachelor, master and doctoral level. The faculty has established close cooperation on research with NORCE (Norwegian Research Centre AS) and the regional industry. A number of master's and doctoral theses are made in collaboration with the industry. The faculty has established research collaborations with universities in the US and Europe, and has developed several academic environments that are at the forefront internationally.The faculty has about 2,800 students and approximately 500 employees at the Department of Electrical Engineering and Computer Science, Department of Structural Engineering and Materials Science, Department of Mathematics and Physics, Department of Energy and Petroleum Engineering, Department of Energy Resources and the Department of Safety, Economics and Planning.

    Department of Energy and Petroleum Engineering 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 relevant industry - especially in the petroleum and battery sector. The department focuses on internationalization, with the development of English study programs and high mobility among academic staff and students. There are currently 60 employees including research fellows and postdocs.

    Deadline

    1st January 2023

    Employer

    University of Stavanger

    Municipality

    Stavanger

    Scope

    Fulltime (1 jobs) Fulltime (%)

    Duration

    Fixed Term

    Place of service

    Ullandhaug

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