Beautiful view at Sola beach.

DrillWell technical seminar - day two

27.09.2017

CT scanning and X-ray are widely used in research and development of cementing and P&A technology.

Harald Linga from SINTEF who is also part of the DrillWell management group was moderator of day two.

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Torbjørn Vrålstad.

Torbjørn Vrålstad from SINTEF and member of the DrillWell management team was the first presenter of day two. In his presentation, Digital Cement Integrity he showed that X-ray computed tomography (CT) is a powerful tool for digital 3D visualization of cement integrity. It leads to an improved, fundamental understanding of size, location and geometry of cracks and microannuli.

Dave Gardner.

Dave Gardner from IRIS talked about Test facility for cement evaluation. Gardner gave an update on his last experiment/presentation . Gardner's next experiment will be the Spectral Noise Log and here he will evaluate the resolution of the spectral noise logs to detect flow behind casing. Here he will also use relevant barrier reference cells, “good” cement, micro-anulus, gas channel and control lines. The flowrate schedule will be 0 to 40 l/hr in steps.

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Dimitrios Pirovolou.

Dimitrios Pirovolou from Visuray presented An overview of Visuray and the VR360. VR360 is a sideways-looking anomaly detection tool that enables enhanced well inspection. It will provide 3D Cement Evaluation in new and old wells using novel X-ray tomosynthesis.

Truls Carlsen.

Truls Carlsen from Statoil is Specialist Drilling Technology and Well Stability and presented Experience of shale as a barrier. Carlsen spoke about Statoils experience with formation as barrier and looked back at 12 years of observations and learnings.

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Erling Fjær.

Laboratory qualification of shale barriers was presented by Erling Fjær from SINTEF.
Laboratory tests may assist in qualification of shale barriers, however upscaling to field conditions is not trivial. A major benefit with laboratory simulations is to investigate how various mechanisms may promote or prevent barrier formation.

Amit Govil.

Amit Govil from Schlumberger continued the seminar with his presentation Barrier evaluation, detecting formation versus cement. Govil talked about the basics of cement evaluation logging tools and how to uderstand the cement evaluation log and how to detect formation creep. Govil gave examples examples of identifying cement, identifying formation and identifying cement and formation.

After an excellent lunch, the seminar continued with the last two presentations.

Hans Joakim Skadsem of IRIS gave a very good presentation on cementing irregular wellbore geometries. Full scale experiments of the displacement process in an irregular wellbore is performed, and simulations are run to better explain the results. The results from the project may have an impact on the planning and execution of cementing jobs and potentially increase safety.

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Hans Joakim Skadsem and Fatemeh Moeinikia.

In the very last presentation of the seminar, Fatemeh Moeinika of IRIS presented a novel approach to quantify leakage risk from plugged and abandoned wells. A software has been developed that will assist oil companies to improve decision making in planning, and in evaluation of plugged and abandoned wells.

Sigmund Stokka, DrillWell manager, summed up the past two days by thanking everyone for attending the seminar. "Thank you to all the presenters, especially to the representatives from the industry, I think we improved from last year and the year before, and I encourage everyone to complete the evaluation form that will be sent out on email you shortly. We can always do better!"

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Sola Strand Hotel was a great place for the seminar.

The presentations will be available on www.drillwell.no, internal pages.

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