admin 发表于 2013-5-29 22:26:05

PhD Candidate in Marine Geology and Geophysics : Troms, Norway

North Energy ASA has a vacant PhD position for three years from May 2013. This position is attached to University of Tromsø, Department of Geology and the research group in “Polar Marine Geology and Geophysics”, and to University of Durham, UK. The position is part of the Marie Curie Initial Training Network GLANAM (Glaciated North Atlantic Margins) funded by the EU 7th Framework program with partners from academia and industry sector from Norway, UK and Denmark. The overall aim of GLANAM is to educate young researchers for public and private sector, strengthen their career opportunities and competitiveness in Earth Sciences with a focus on glacially influenced continental margins.
DescriptionTitle of the project: Quantification of uplift and erosion using rock physics and compaction trends in shales. The candidate will be working with high quality seismic data, well-logs and cores samples in order to explain the history of uplift and erosion in the Barents Sea and adjacent areas. The Barents Sea has experienced profound erosion and uplift during the last 2.7 million years related to the growth and decay of ice sheets. The key challenges in oil and gas exploration in the Barents Sea is related to the effect of this erosion and uplift due to shut-off of hydrocarbon generation due to cooling of the source rocks, top seal and/or fault seal failure combined with long retention time of hydrocarbons, and change of hydrocarbon properties. The uplift and erosion will also have impact on acoustic properties of shales, sands, fractures and faults.Direct hydrocarbon indicators, like AVO, will change character (classes) with depth based on the compaction trends for cap rock (typically shale) and reservoir rock, which are inherently different. As the subsurface layers are uplifted and eroded, the altered stress regime in the overburden will stop the compaction. The goal of this project is to combine geological models based on seismic interpretation, vitrinite reflectance data, apatite fission track data etc., combined with rock physics models and porosity loss trends in order to estimate the amount of eroded sediments and timing of the uplift. The rock physics models will be calibrated to wells and used to quantify the uplift and erosion from appropriate seismic attributes like AVO, acoustic impedance and Vp/Vs. The work will comprise a study on the compaction and porosity loss as a function of the overburden stress. Studies of the depositional environments will be used to constrain model inputs on mineralogy. The findings from the studies will again serve as input to the overall understanding of primary hydrocarbon migration models, secondary migration following fill-spill and finally to a qualified estimate of seal potential of identified traps in the Barents Sea. The Level 1 industrial partner Northern Energy will provide both supervision as well as the key datasets (well and seismic data) for the research.
Additional Job DetailsQualification requirementsThe successful applicant must fulfil the requirements for admission to the faculty’s PhD program; cf. Regulation for the degree of Philosophiae Doctor (PhD) at the University of Tromsø. In addition, he/she must be able to document proficiency in English equivalent to Norwegian Higher Education Entrance Qualification, refer to the website about PhD regulations at UiT.Following the rules of mobility for Marie Curie Initial Training Networks, the candidate should not have lived or had his/her main employment or study in Norway for more than 12 months during the past three years prior to the employment. Short stays and holidays do not count.The successful candidate should have a background in tectonic and sedimentological processes, knowledge in marin geophysics and/or equivalent relevant experience at Master level. Experience with seismic interpretation, ArcGis and/or digital imaging programmes would be advantageous. The applicant must present a short description outlining his/hers interest in and academic basis for working on the announced PhD project.Emphasis shall also be attached to personal suitability.The PhD position is for a fixed term, with the objective of completion of research training to the level of a doctoral degree. Admission to a PhD programme is a prerequisite for employment, and the programme period starts on commencement of the position. The PhD Candidate shall participate in the organized research training as well as training organized in the GLANAM Network, and the PhD project shall be completed during the period of employment. Information about the application process for admission to the PhD programme, application form and regulations for the degree of Philosophiae Doctor (PhD) are available at the following address: Research education.
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