Browsing Department of Energy and Petroleum Engineering (TN-IEP) by Author "Fjelde, Kjell Kåre"
Now showing items 21-25 of 25
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Pressure Build-Up in Closed Wells During Kick Migration and Fluid Compressibility Effects
Agonafir, Mesfin Belayneh; Petersen, Johnny; Fjelde, Kjell Kåre (Chapter, 2022)If a kick is migrating in a closed well, this will lead to pressures building up in the well. It has earlier been shown that for Non-Newtonian fluids, suspension effects will make it impossible to deduce a unique gas ... -
Reliability-Based Casing Design with Focus on an APB Collapse Scenario
Bjørndal, Erling (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06-15)In times of unstable oil price, optimization related to casing and tubing design becomes more important than ever. Reducing cost and at the same time ensuring reliable and safe drilling and completion installations becomes ... -
Simulation Study and Modelling Improvements for the Bullheading Process
Abdelgadir Mohammed, Mohammed Elsiddig (Master thesis, 2022)In a bullheading operation, selecting the right pumping rate is vital to the job's success. A too low pumping rate may not displace the undesired fluid back into the formation, and a too-high rate generates high surface ... -
Use of a transient model for studying kick migration velocities and build-up pressures in a closed well
Hang Ngoc Tat, Thea; Gomes, Dalila; Fjelde, Kjell Kåre (Chapter, 2021)The objective of the paper is to show that using pressure build-up curves for estimating kick migration velocities can be unreliable. This will be demonstrated by using a transient flow model where different flow patterns ... -
Well Barrier Restoration Across Dual Cemented Liners
Skoge, Charlotte (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)In the past years there has been an increased focus on decommissioning of wells in the NCS. Decommissioning of wells introduces significant investments with no financial returns and has for those reasons historically had ...