Blar i UiS Brage på emneord "p&a"
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A Method for Probabilistic Time Estimation of Plug and Abandonment of the Wells on the Brage Field
(Masteroppgave/UIS-TN-IØRP/2018;, Master thesis, 2018-06-14)The production on several fields on the Norwegian continental shelf (NCS) is moving towards the critical point where expenses exceed the production income. Operating past the economical limit is not viable and thus, the ... -
A New P&A technology for setting the permanent barriers
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06-15)This thesis presents an innovative way of plugging wells in the near future. The technology is based on various exothermic reactions lowered into the well at desired plugging depths. The ensuing reactions melt and engulf ... -
Development of a Decommissioning Cost Estimation Model for Oil and Gas Fields on the Norwegian Continental Shelf
(Masteroppgave/UIS-TN-IØRP/2018;, Master thesis, 2018-06)Decommissioning of offshore installations on the Norwegian Continental Shelf (NCS) is not a new industry, but apart from the vast Frigg and Ekofisk I projects, it has seen little activity in the years since the production ... -
Formation as Barrier for Plug and Abandonment of Wells
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-15)To permanently plug and abandon (P&A) of drilled wells, permanent barrier(s) should be established. Cement is the primer material used for zonal isolation and permanent P&A as barrier material. However, it is recognized ... -
Investigation of Leakage Paths in Well Abandonment
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)A large number of wells will have to be abandoned at the NCS and around the world. NORSOK D-010 states that a well that is permanently abandoned shall be abandoned with an eternal perspective and with zero leakage [1]. ... -
Method selection study of future plug and abandonment at Gjøa field
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)On the Norwegian Continental Shelf (NCS) there will be a wave of subsea and platform wells that will eventually need to be plugged and abandoned (P&A’d) in a safe and efficient manner. The well abandonment phase is the ... -
Optimize the HydraArchimedes cement insurance tool
(Masteroppgave/UIS-TN-IØRP/2018;, Master thesis, 2018-06)The HydraArchimedesTM tool is called a cement insurance tool because of its ability to squeeze cement out through casing perforations by rotating the tool inside a casing, thereby creating a rock-to-rock barrier. It is ... -
P&A in Arctic conditons
(Master thesis, 2014-06-30)All oil and gas wells will require plugging and abandonment (p&a) at some point in their operating life. Considering the challenging nature of the Arctic weather, its remoteness and lack of infrastructures, and its ice ... -
P&A using PWC technique and verification of the plug
(Master thesis, 2014-06-16)When a well is permanently plugged and abandoned (P&A), a plug has to be set over the entire cross section of the well. The conventional method to perform a P&A operation is to mill the casing and pull it to surface before ... -
Plug and abandonment operations and tool positioning
(Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-13)With aging oil fields, the Norwegian petroleum authorities are focusing on Plug and Abandonment (P&A) plans. Therefore efforts are being made, by relevant authorities, to improve standards and procedures for the P&A ... -
Plug and Abandonment Technology Evaluation and Field Case Study
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)In the North Sea, the average field age is increasing and a large number of wells needs to be plugged and abandoned in the future. P&A is regarded as an operation with no financial returns and is associated with significantly ... -
Plug and abandonment, milling operations and simulations
(Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-13)During plug and abandonment, there can be a need for removing casing to ensure that a proper cement barrier can be set. The conventional method for doing this is by performing milling oper ... -
Potential Utilization of Settled Barite as Permanent Barrier Material
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-14)The focus on permanent Plug and Abandonment (P&A) has increased the last few years, due to aging infrastructure of many of the fields on the Norwegian Continental Shelf (NCS). Permanent P&A introduces significant expenses ... -
Preliminary Concept Study: Selection of Optimal Lightweight Design Concept for Offshore Platform P&A
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)As more facilities are nearing the end of their design life on the Norwegian Continental Shelf (NCS), the volume of costly plug and abandonment (P&A) operations is on the rise. Current practice is to use expensive drilling ... -
Theoretical Study on Utilization of X-ray Techniques for Verification of Casing Cement
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06)Establishing a hydraulic seal that prevents flow is the primary objective of any cement job, as it is essential throughout the life of a well. Evaluation of the cement in the annulus must be done to verify its quality. ... -
Understanding Leakage Rates in Permanently Abandoned Wells by Studying Natural Hydrocarbon Seepages
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)Permanent plug and abandonment (PP&A) of wells is steadily becoming more important on the Norwegian Continental Shelf (NCS), as a large number of fields are approaching end of their productive life. Combining operational, ...