Blar i Universitetet i Stavanger på emneord "P&A"
Viser treff 1-14 av 14
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Advancement of P&A operations by utilizing new PWT concept from Archer
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-17)Many of the oil and gas fields on the Norwegian continental shelf (NCS) are approaching the end of field life. The Petroleum safety authority of Norway is putting pressure on the Exploration and Production (E&P) companies ... -
Application of fly ash-based geopolymer as an alternative for plug and abandonment
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-05-30)In this study fly ash-based geopolymers were produced by the alkali-activation of fly ash. The purpose was to use fly ash-based geopolymers as alternative for cement for plug and abandonment operations. Ultrasonic Cement ... -
Expanding the Well Intervention Scope for an Effective P&A Operation
(Master thesis, 2017-06-14)Over 2500 wells on the Norwegian Continental Shelf (NCS) will at some point have to be permanently plugged and abandoned. As the drill rig rate contributes to 40-50% of the total plug and abandonment (P&A) cost, the potential ... -
Failure prediction for subsea plug and abandonment using a method based on anticipatory failure determination
(Masteroppgave/UIS-TN-IØRP/2015;, Master thesis, 2015-06-12)The oil and gas industry at the Norwegian Continental Shelf (NCS) is today facing hundreds of subsea wells that will need Plug and Abandonment (PnA) operations in the nearest future. Due to a marked where costs have escalated ... -
Feasibility of a Wireline Punching Tool
(Masteroppgave/UIS-TN-ISØP/2019;, Master thesis, 2019-06-13)This thesis describes the process of the development work completed for E Plug AS. A feasibility study on a downhole punching tool has been conducted. Furthermore, a simulation model has been created and evaluated through ... -
An Investigation of Sustained Casing Pressure Occurring on the NCS
(Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-12-15)Reports from the Gulf of Mexico (GoM) show that thousands of wells exhibit sustained casing pressure (SCP), however the extent of this phenomena and its driving factors have yet to be studied in detail on the Norwegian ... -
New technology trends for effective plug and abandonment
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-08)Plug and Abandonment (P&A) has become a major focus in the petroleum industry and especially in Norway due to the maturity of the fields. Therefore, an extensive number of wells to be abandoned just show how big the challenge ... -
P&A - status on regulations and technology, and identification of potential improvements
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-12)There will be a wave of wells needing to be abandoned in the North Sea over the next decades. The abandonment operation is known as Plug and Abandonment, or just P&A. As P&A has no value creation, it is very important that ... -
P&A operations today and improvement potential
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-05-29)Today rig/derrick and vessels is traditionally used to perform a P&A operation. With a rising need for P&A operations combined with the wish of having a stable level of drilling operations, a shortage of rigs will be a ... -
Plug & abandonment of offshore wells: Ensuring long-term well integrity and cost-efficiency
(Peer reviewed; Journal article, 2019-10)There is an upcoming "P&A wave" of wells that need to be permanently plugged and abandoned, especially in mature, offshore areas such as the North Sea and Gulf of Mexico. It is important to ensure that plugged wells do not ... -
Plug and abandonment operations performed riserless using a light well intervention vessel
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-14)In a few years there will be a significant increase in wells that need to be permanently plugged and abandoned (PP&A). Statoil operates around 500 subsea wells on the Norwegian Continental Shelf (N.C.S), whilst there exist ... -
Section milling during plug and abandonment of petroleum wells
(Masteroppgave/UIS-TN-IPT/2015;, Master thesis, 2015-06-15)During plug and abandonment (P&A) operations of petroleum wells there is often a need to remove casing in order to set competent barrier sealing in all directions. If the casing cannot be cut and pulled, a section milling ... -
Well Barrier Restoration Across Dual Cemented Liners
(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 ... -
Well P&A Tubing Compaction Method Evaluation and Modelling
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-07-13)The number of aged fields in the North Sea is increasing, and in few years, and there will be a significant increase in number of wells that need to be permanently plugged and due to low oil prices and other reasons, there ...