PhD scholarship in Corrosion Control in Oil & Gas: Investigation of Corrosion Inhibition Mechanisms Specific to localized Corrosion in Sweet and Sour Conditions

DTU Mechanical Eng
Tuesday 15 May 18

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The Materials and Surface Engineering section in the Department of Mechanical Engineering at the Technical University of Denmark is seeking candidate for 1 PhD position for a project investigating the corrosion inhibitors and inhibition mechanisms used for oil & gas application. Proposed PhD programme is part of the project conducted in collaboration with Danish Hydrocarbon Research and Technology Centre (DHRTC). The PhD position is for a 3-year period and expected to start from September 1st 2018.

Corrosion is a common problem in the oil and gas industry, which reduces the lifetime of well tubing material. Various types of corrosion inhibitors are used in Oil & Gas applications to reduce corrosion of tube materials. Although inhibitors in general provide various levels of corrosion protection efficiency, it is important to understand the specificity of various inhibitors in relation with localized corrosion and other types of corrosion.

Responsibilities and tasks
To prevent corrosion, e.g. corrosion inhibitors, H2S and O2 scavengers are used. However, despite of using such mitigation techniques, extensive corrosion in the wells is still observed. The conditions present in the wells are complex and the severity of corrosion depends on various environmental (e.g. CO2/H2S/O2, seawater fraction, temperature, pressure, liquid flow velocity, stresses etc.) and material variables (e.g. chemical composition, microstructure, and surface finish). Therefore the inhibitor use also should match with these variables, influencing factors, and specific corrosion mechanism.

Another factor is the use injection water to enhance oil recovery, which alter the aqueous chemistry in the wells. This has huge influence on inhibition mechanisms and efficiency. Present PhD project will focus on the detailed investigation of various inhibitor chemistries specifically for sweet and sour corrosion under oil & gas production conditions. Work will also involve molecular modelling to understand the action of presently used inhibitors with an aim to modify the molecular structure for better efficiency and tailoring for particular application.

Qualifications
Candidates for the position should have a Master degree in materials science and engineering, chemistry or related subjects with a good knowledge on corrosion and electrochemical methods. Prior experience in corrosion issues related to oil and gas systems is an advantage. Combination of knowledge in materials, corrosion, and oil & gas application is preferred.

Approval and Enrolment
The scholarship for the PhD degree is subject to academic approval, and the candidate will be enrolled in one of the general degree programmes at DTU. For information about our enrolment requirements and the general planning of the PhD study programme, please see the DTU PhD Guide.  

Assessment
The assessment of the applicants will be made by Professor Rajan Ambat.

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 academic freedom tempered by responsibility.

Salary and appointment terms
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union. The period of employment is 3 years. 

You can read more about career paths at DTU here.  

Further information
Further information may be obtained from Professor Rajan Ambat, tel.: +45 4525 2181, e-mail: ram@mek.dtu.dk.   

You can read more about Department of Mechanical Engineering at www.mek.dtu.dk. Project will also be in collaboration with DHRTC, DTU, www.oilgas.dtu.dk/english

Application
Please submit your online application no later than 30 May 2018 (local time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", fill out the online application form, and attach all your materials in English in one PDF file. The file must include: 

  • A letter motivating the application (cover letter)
  • Curriculum vitae
  • Grade transcripts and BSc/MSc diploma
  • Excel sheet with translation of grades to the Danish grading system (see guidelines and Excel spreadsheet here)

Candidates may apply 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.

DTU Mechanical Engineering covers the fundamental engineering disciplines within Solid mechanics, Fluid mechanics, Coastal and Maritime Engineering, Energy systems and energy conversion, Materials and Surface Engineering, Manufacturing Engineering, Engineering design and Product development. The department has a scientific staff of about 157 persons, 95 PhD students and a technical/administrative support staff of about 85 persons.

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.