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reference: 4916793

documentId: 4916793

connectionPointId: 7

lastModificationDate: 1544534169780

stillingsbetegnelse:
Two PhD/Postdoc positions for Experimental investigations of barite scale formation at well conditions

jobbeskrivelse:

The Danish Hydrocarbon Research and Technology Centre (Centre for Oil and Gas - DTU in collaboration with the Center for Energy Resources Engineering (CERE) at the Department of Chemical and Biochemical Engineering at the Technical University of Denmark (DTU), invites applicants for postdoc or PhD positions on barite scale formation at well conditions. The centre for Oil and Gas - DTU is established by the Danish Underground Consortium and DTU. As part of a Danish national strategy on oil and gas, the research centre is an ambitious, targeted effort to extend field life time and improve recovery of oil and gas from the Danish North Sea.

When well integrity is at risk, the recovery Deposits of scale and corrosion are contributing factors for potential loss of well integrity and further, scale build-up causes decrease of well efficiency. EOR schemes may affect the rate of scale precipitation and corrosion, potentially to the point of negating the targeted improvement in recovery factor. Therefore, improved understanding of observed mechanisms and development of testing methods as well as improved modelling tools for predicting and potentially mitigating scale deposit and corrosion is essential for optimal recovery of the remaining reserves. The DHRTC research program and these advertised positions on scale aims to improve the understanding of the complex and coupled chemical mechanisms that govern the deposition of scales (e.g. CaCO3, BaSO4, FeCO3, FeS). The projects will involve work with partner laboratories at DTU and with the team in the fluid characterization and modelling groups at DHRTC.

Responsibilities and tasks


Candidate one will work on a primarily experimental project which will be an integrated part of the scale and corrosion program at the DHRTC. The plan for this project is experimental studies of the kinetics of formation of BaSO4 and other insoluble scales with focus on nucleation and flow regimes. The project will focus on setting up a flow cell to simulate realistic pipe flow wherein the factors influencing scale build-up can be controlled. Candidate one is expected to work with the team at the Centre for Oil and Gas - DTU to perform innovative, fundamental, and applied research on:

• Experimental scale deposition kinetics
• Setting up a reaction cell to study scale build up with a novel design to mimic realistic pipe flow
• Investigation of scale build-up and the dependence on flow, concentrations and temperature.
• Investigation of the effect of crude oil chemistry and composition on the deposition of BaSO4 scale and other scales.

Candidate two is expected to work with the team at Center for Energy Resources Engineering (CERE) to measure BaSO4 solubility in relevant brines to fill in the gaps between existing data.

• Reproduce existing low pressure solubility data for BaSO4 in water and brines.
• Measure BaSO4 solubility in pure water at temperatures up to 200 °C to establish the correct solubility of BaSO4 in this temperature range.
• Design and build a cell for solubility measurements at pressures up to 500 bar and temperatures up to 200 °C.
• Measure BaSO4 solubility at relevant reservoir conditions. The measurements will be carried out at temperatures, pressures, and compositions similar to reservoir conditions.

Application potential

The line-of-sight application potential of this project is to assist in reaching a better understanding of the conditions that lead to scale build up in North Sea Oil Well conditions.

Qualifications

For the PhD position: Master's degree in analytical or physical chemistry, chemical engineering or similar.

For the Postdoc position: PhD degree in analytical or physical chemistry, chemical engineering or similar.

• Exceptional skills in experimental physical chemistry/chemical engineering;
• Experience with fluid dynamics and flow systems;
• Experience with and a strong interest in setting up advanced experiments;
• Interest in applied research;
• Ability to work in a multi-disciplinary environment;
• Excellent writing and communication skills in English;

You can read about the scientific basis for the centre's activities here: http://www.oilgas.dtu.dk/english/Research. http://www.oilgas.dtu.dk/english/Research

Approval and Enrolment of PhD students

The scholarships for the PhD degree are subject to academic approval, and the candidates will be enrolled in one of the general degree programmes of DTU. For information about the general requirements for enrolment and the general planning of the scholarship studies, please see the DTU PhD Guide. http://www.dtu.dk/english/Education/PhD/Rules/PhDguide

We offer

DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and an academic freedom tempered by responsibility.

Salary and terms of employment

The salary and appointment terms of the PhD position are consistent with the current rules for PhD degree students. The period of employment is 3 years.

The appointment terms of the Postdoc will be based on the collective agreement with the Confederation of Professional Associations. The allowance will be agreed with the relevant union. Postdoc employment is for a period of two years.

Further information

Further information may be obtained from Senior Researcher Karen Feilberg, klfe (at) dtu.dk, Associate Professor Kaj Thomsen, kth (at) kt.dtu.dk, or Associate Professor Philip Loldrup Fosbøl, plf (at) kt.dtu.dk

You can read about the scientific basis for the centre's activities here: http://www.oilgas.dtu.dk/english/Research http://www.oilgas.dtu.dk/english/Research

Application procedure

Please submit your online application no later than 15 January 2019.

To apply, please open the link "Apply online", fill out the online application form. The following must be attached in English:

Please indicate whether you are applying for the PhD position or the Postdoc position.

The file must include:

• Application stating your specific interest, motivation and qualifications for the project.
• Curriculum vitae
• Research statement and names and addresses of three references
• For PhD candidates: Grade transcripts and BSc/MSc diploma. Excel sheet with translation of grades to the Danish grading system (see guidelines and Excel spreadsheet here) http://www.dtu.dk/english/Education/phd/Applicant/Pre_acceptance-1-
• For postdoctoral candidates: Diploma (MSc/PhD) and list of publications

Candidates may apply for the PhD position prior to obtaining their master's degree, but cannot begin before having received it.

All interested candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply.

The overarching purpose of The Danish Hydrocarbon Research and Technology Centre is to identify new technological and conceptual solutions that will enable increased oil and gas extraction in the Danish section of the North Sea. The research activities at the centre cover selected aspects of expertise: Reservoir characterization, Enhanced Oil & Gas Recovery Processes, Drilling & Production Technology Concepts and Production Facilities, Materials Research & Design. The centre will develop deep, new understanding within these disciplines with a line--of--sight to application. Located at The Technical University of Denmark research groups at the University of Copenhagen, Aarhus University, Aalborg University and the Geological Survey of Greenland and Denmark will be affiliated with the Centre. When fully operational, the centre will employ and engage more than 100 people.

DTU is a technical university providing internationally leading research, education, innovation and scientific advice. Our staff of 6,000 advance science and technology to create innovative solutions that meet the demands of society; and our 11,200 students are being educated to address the technological challenges of the future. DTU is an independent academic university collaborating globally with business, industry, government, and public agencies.


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jobCategoriesCodes_0: http://data.europa.eu/esco/isco/C2310

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positionTypeCode: directhire

contractTypeCodes_0: fulltime

Arbejdsgiver Navn: Danmarks Tekniske Universitet

source: DK-STAR