Solveig Riisøen. Photo: IRIS

Meet PhD student Riisøen

18.10.2016

Solveig Riisøen just started her PhD project. Read more about the project which is related to DrillWell program 1.

About Solveig Riisøen:
Previous education: Master’s degree in Petroleum technology (Reservoir Chemistry) from University of Bergen (UniResearch CIPR).
Previous work experience: 3 years as reservoir engineer in ConocoPhillips in Stavanger.

About the project:
Title of the PhD project: A study on the accuracy of the modelled frictional pressure loss based on rheological characterisation of the drilling fluid.

Objective:
This study shall investigate:

the accuracy of the modelled frictional pressure loss of a typical drilling fluid, using a rheology curve produced by a Couette type rheometer
the effect of solids particles on the predictability of frictional pressure loss

Duration: 3 years
Funding: KD stipendiat (Kunnskapsdepartementet / Ministry of Education and Research)

Why do you find this topic interesting?
I find the topic interesting because there are a lot of uncertainties related to calculating the frictional pressure loss and there are different aspects to the mitigation of these uncertainties to investigate. Aspects to look further into may be measurement methods, equipment, procedures and different flow geometry to take into considerations and do this both experimentally and with modelling/simulations.

I find it interesting that it is an experimental study and possibly some modelling and simulations. Some of the work will be done in Stavanger, which is also positive since I lived three years there and it’s nice to be coming back to Stavanger.

It is important to highlight the uncertainties related to the modelling of the pressure loss in order to improve the methods and get better control of the well operations and enhance the drilling process.

How will data be collected and used?
Data will be collected experimentally in the laboratory in Stavanger (Iris and UiS). The data will be analysed and compared with other studies and models and the results and conclusions will be reported in journals and papers.

Which gaps / challenges in existing research is this project aiming to fill?
There are many challenges related to modelling the frictional pressure loss during the drilling of a well. There are uncertainties related to getting the rheological properties of the drilling fluid (measurements procedure, methods and flow geometry), how to transform the information to the drillers and how to use this information to estimate the pressure loss based on the information we know of the well.

This study will dig deeper into the uncertainties of today’s standard of modelling the frictional pressure loss during drilling and hopefully be able to come up with a more accurate way of modelling this pressure loss.

How is the project related to DrillWell?
This study is related to DrillWell program 1 (Safe and Efficient Drilling Process). Program 1 addresses technologies to avoid drilling related problems and to improve safety and drilling performance.More specific, the study is in cooperation with the project “Drilling Process Optimization” in Program 1 and to quantify the effect of model and data uncertainties

Your first impression of DrillWell and IRIS, and further thoughts on working here?
My first impression of IRIS is that the people here are very friendly and welcoming. The level of competency is very high and the people are very devoted to their research. I am looking forward to work here at IRIS Bergen and to get to know the people better and also to meet the people at IRIS in Stavanger and SFI DrillWell.

Supervisor, co-supervisor, advisors and other cooperation during this PhD research?
My supervisor if Fionn Iversen and co-supervisor will be Rune Time from UiS. Hans Joakim Skadsem and Eric Cayeux will be advisors from the IRIS Stavanger office.

To begin with, this study will be a cooperation with PhD student, Milad Khatibi, from UiS working on the ongoing AdWell project (Advanced wellbore transport modelling) and master student, Vijay Kumar Keerthivasan, he is performing his master thesis in cooperation with DrillWell.

And later, it will hopefully be a cooperation with other projects and Universities.

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