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Internship | Batch foam injection in well-reservoir model

Delft, Zuid-Holland 6 mois
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What will be your role?

Experimental project addressing the impact of on-demand supply of gas by gas wells.

In the coming decades the energy mix will change dramatically, thereby reducing the contribution of fossil fuels. On the other hand, the contribution of fossil fuels (especially natural gas) will remain important, as it is an energy source that is more constantly available (i.e. wind, solar and tidal energy have fluctuating availability). If natural gas is to fill in the gaps when renewable energy supply is low, the gas supply should operate on demand.
Such a condition may be challenging for mature wet gas wells, of which there are many in use. The operation of a wet gas well is characterized by the production of gas and liquids. These liquids may come from the reservoir itself and/or arise from a condensation process.

In case the reservoir pressure is high, the production flow rates are high as well, and the liquids are produced to surface easily. However, when reservoir pressures decline (i.e. when the reservoir becomes mature) the flow rates decrease, resulting in a decreased ability to transport the liquids to the surface. At low reservoir pressures, the momentum of the gas is not sufficient to produce large amount of liquids, such that these liquids accumulate at the bottom of the well, eventually making all gas production impossible.
There are several techniques to deal with such challenges (e.g. by using foamers or operating intermittently), although they do not resolve the origin. Perhaps more important, these techniques may become less suitable if the wells are to be operated on demand, making the availability of the wells not constant any more. When operating on demand, the wells may be shut-in/restarted at instances that are not optimal in terms of production, possibly resulting in a reduced production or earlier end-of-life.

In this experimental project the performance of one of these techniques (foamer injection) will be studied, focusing on the behaviour during startup of a well that may not be in optimal condition. The project will make use of an existing and unique setup combining a well and reservoir (scaled). Flow dynamics are introduced by the flow system itself, but can also be triggered by open/closing system valves. In this project, a comparison will be made of the well-reservoir performance with and without foamer injection, and for various injection parameters (dosage, timing, etc.).

How do you want to contribute to tomorrow's world? How big can your impact be? Come and work at TNO and envision it.

What we expect from you

We are looking for a student who is enthusiastic, critical and a team-player. We expect you to work hard and independently on your own project, but ask for help if needed. Knowledge on multiphase flow phenomena is preferred. Duration of the project is 3 months

What you'll get in return

You want to work on the precursor of your career; a work placement gives you an opportunity to take a good look at your prospective future employer. TNO goes a step further. It's not just looking that interests us; you and your knowledge are essential to our innovation. That's why we attach a great deal of value to your personal and professional development. You will, of course, be properly supervised during your work placement and be given the scope for you to get the best out of yourself. Naturally, we provide suitable work placement compensation.

TNO as an employer

At TNO, we innovate for a healthier, safer and more sustainable life. And for a strong economy. Since 1932, we have been making knowledge and technology available for the common good. We find each other in wonder and ingenuity. We are driven to push boundaries. There is all the space and support for your talent and ambition. You work with people who will challenge you: who inspire you and want to learn from you. Our state-of-the-art facilities are there to realize your vision. What you do at TNO matters: impact makes the difference. Because with every innovation you contribute to tomorrow's world. Read more about TNO as an employer.

The selection process

After the first CV selection, the application process will be conducted by the concerning department. TNO will provide a suitable internship agreement. If you have any questions about this vacancy, you can contact the contact person mentioned below.

Due to Covid-19 and the consequent uncertainties and restrictions, students who are not residing in the Netherlands may currently not be able to start an internship or graduation project at TNO.

Has this job opening sparked your interest?

Then we'd like to hear from you! Please contact us for more information about the job or the selection process. To apply, please upload your CV and covering letter using the 'apply now' button.

Contact: Jos Westende, van 't
Phone number: +31888665483

Note that applications via email and third party applications are not taken into consideration.