Decommissioning of Offshore Oil and Gas Installations in European Waters : The End of a Decade of Indecision?

1999 ◽  
Vol 14 (1) ◽  
pp. 101-123
Author(s):  
John Woodliffe

AbstractFor the past 10 years or more, governments of European states have sought to lay the scientific, legal and political groundwork for an agreed normative framework intended to govern decommissioning of deep-water offshore installations, many of which will shortly reach the end of their working life. The Brent Spar episode abruptly shattered any illusion of consensus on decommissioning issues. This article traces the main stages in the development of the current legal regime, including the recent overhaul and rebuilding of regional and international agreements. It examines the implications of the assertion of interest by the European Union in this area and also documents the outcome of the Brent Spar saga. The article concludes with an assessment of the OSPAR Decision of 23 July 1998, which appears to provide the long sought for international agreement.

2018 ◽  
Vol 33 (2) ◽  
pp. 290-323 ◽  
Author(s):  
Robin Churchill

Abstract The first part of this article explores the extent to which the European Union (EU) is an actor in the law of the sea. After explaining when, why and how the EU became such an actor, it considers the legal and political constraints on the capacity of the EU to act; the interests that have shaped its role as an actor; and the various means by which it acts. The second part of the article applies the conclusions from this analysis to outline the role that the EU has so far played in the ongoing development of the legal regime of the marine Arctic and to predict the role that it will continue to play, especially as regards navigation, fisheries, the exploitation of offshore oil and gas, and the protection of the environment.


2021 ◽  
Vol 73 (09) ◽  
pp. 50-50
Author(s):  
Ardian Nengkoda

For this feature, I have had the pleasure of reviewing 122 papers submitted to SPE in the field of offshore facilities over the past year. Brent crude oil price finally has reached $75/bbl at the time of writing. So far, this oil price is the highest since before the COVID-19 pandemic, which is a good sign that demand is picking up. Oil and gas offshore projects also seem to be picking up; most offshore greenfield projects are dictated by economics and the price of oil. As predicted by some analysts, global oil consumption will continue to increase as the world’s economy recovers from the pandemic. A new trend has arisen, however, where, in addition to traditional economic screening, oil and gas investors look to environment, social, and governance considerations to value the prospects of a project and minimize financial risk from environmental and social issues. The oil price being around $75/bbl has not necessarily led to more-attractive offshore exploration and production (E&P) projects, even though the typical offshore breakeven price is in the range of $40–55/bbl. We must acknowledge the energy transition, while also acknowledging that oil and natural gas will continue to be essential to meeting the world’s energy needs for many years. At least five European oil and gas E&P companies have announced net-zero 2050 ambitions so far. According to Rystad Energy, continuous major investments in E&P still are needed to meet growing global oil and gas demand. For the past 2 years, the global investment in E&P project spending is limited to $200 billion, including offshore, so a situation might arise with reserve replacement becoming challenging while demand accelerates rapidly. Because of well productivity, operability challenges, and uncertainty, however, opening the choke valve or pipeline tap is not as easy as the public thinks, especially on aging facilities. On another note, the technology landscape is moving to emerging areas such as net-zero; decarbonization; carbon capture, use, and storage; renewables; hydrogen; novel geothermal solutions; and a circular carbon economy. Historically, however, the Offshore Technology Conference began proactively discussing renewables technology—such as wave, tidal, ocean thermal, and solar—in 1980. The remaining question, then, is how to balance the lack of capital expenditure spending during the pandemic and, to some extent, what the role of offshore is in the energy transition. Maximizing offshore oil and gas recovery is not enough anymore. In the short term, engaging the low-carbon energy transition as early as possible and leading efforts in decarbonization will become a strategic move. Leveraging our expertise in offshore infrastructure, supply chains, sea transportation, storage, and oil and gas market development to support low-carbon energy deployment in the energy transition will become vital. We have plenty of technical knowledge and skill to offer for offshore wind projects, for instance. The Hywind wind farm offshore Scotland is one example of a project that is using the same spar technology as typical offshore oil and gas infrastructure. Innovation, optimization, effective use of capital and operational expenditures, more-affordable offshore technology, and excellent project management, no doubt, also will become a new normal offshore. Recommended additional reading at OnePetro: www.onepetro.org. SPE 202911 - Harnessing Benefits of Integrated Asset Modeling for Bottleneck Management of Large Offshore Facilities in the Matured Giant Oil Field by Yukito Nomura, ADNOC, et al. OTC 30970 - Optimizing Deepwater Rig Operations With Advanced Remotely Operated Vehicle Technology by Bernard McCoy Jr., TechnipFMC, et al. OTC 31089 - From Basic Engineering to Ramp-Up: The New Successful Execution Approach for Commissioning in Brazil by Paulino Bruno Santos, Petrobras, et al.


Author(s):  
Adeshina Elegbede ◽  
Ove T. Gudmestad

Piggyback configurations of pipelines, such as a Direct Electrical Heating (DEH) cable mounted on production flowlines, are becoming a common occurrence in the offshore oil and gas industry and they have been observed to excite into a type of flow-induced vibration called galloping in the presence of strong currents at free span locations. This work was aimed at studying potential flow induced galloping vibrations of piggyback type of pipelines commonly used on offshore installations in the oil and gas industry. Tests were carried out in a 12m long, 0.7m wide and 1.2m deep current flume tank located at the NTNU/SINTEF Hydrodynamic Laboratory in Trondheim, Norway. The tank has a test rig with cylinders suspended horizontally on a set of springs mounted on it. Reduced velocities were ranging from 4 to 15, depending on the equivalent diameter of the piggyback pair. In this experimental work, the effects of different diameter ratios and the angle of attack of the flow on the cylinders arranged normal to the flow were investigated. Three different diameter ratio cases were investigated: D+0.5D, D+0.32D and D+0.25D. Attack angles 0°, 30°, 60°, 90°, 120°, 150° and 180° were tested for these 3 diameter ratios giving a total of 21 test cases. The results obtained show that, for all cases of diameters ratios, high response amplitude ratios, as high as 1.7, can occur at reduced velocities less than 10 when the angle of attack is at 90°. It was also observed that vibrations that are characteristic of galloping instabilities occurred at an attack angle of 180° for the D+0.5D and the D+0.32D configurations. For the D+0.25D case, the response amplitudes were similar to a VIV situation. Comparing the response of the different diameter ratios show that the largest pipeline to piggyback ratio gives the largest responses for all attack angles.


1999 ◽  
Vol 14 (4) ◽  
pp. 523-540
Author(s):  
Louise de La Fayette

AbstractIn 1995, Greenpeace International protested the proposed ocean dumping of the offshore installation, Brent Spar. This protest prompted a strong public reaction which in turn led to the recycling of the Brent Spar on land and also to a reconsideration of the relevant legal regime under the OSPAR Convention. In July 1998, the OSPAR Commission meeting at the ministerial level adopted a ban on the disposal of offshore oil and gas installations at sea. Since that time, there have been further developments at the global, regional and national level. This article examines these developments at the OSPAR Commission, at the European Parliament, by the Scientific Group of the London Convention 1972, and in the United Kingdom, which is now implementing the OSPAR decision in its national regulatory regime.


Author(s):  
Grethe Osborg Ose ◽  
Trygve J. Steiro

The introduction of Integrated Operations (IO) in the offshore oil and gas industry makes distanced and distributed decision-making a growing part of normal work. Some functions have been transferred from offshore installations to onshore offices as a consequence of the technologies that have recently become available. The authors analyze whether the onshore organization is ready for increased responsibilities by increasing the resilience in its work patterns, since resilience is important for maintaining or increasing safety level compared to current operation, where personnel on board installations can observe the plant at first hand. This study has been performed as a case study of an onshore Support Center in a drilling company at the start of the process of using the Support Center. The establishment of the Support Center involved re-arranging the office arrangements to an open landscape for all offshore installation support personnel and grouping them according to disciplines. They also acquired new technology, including video conference equipment. Important findings are that developing resilience has to be followed through at all levels of the organization. Time and resources have to be made available when work practices change, providing the physical framework alone does not improve resilience. The study also offers a more detailed description of capability resilience and which aspects should be considered when developing resilience. The authors look at the status so far in the change process and also find areas that should be developed in order to increase resilience further.


2015 ◽  
Vol 30 (2) ◽  
pp. 255-284 ◽  
Author(s):  
Nengye Liu ◽  
Elizabeth A. Kirk

This article provides a roadmap for possible European Union (eu) action in the protection of marine biodiversity in the changing Arctic. First the eu’s competence in the Arctic is briefly introduced. Then the discussion turns to the eu’s potential external and internal actions in shipping, fisheries and offshore oil and gas operations that could possibly enhance the international legal regime for the protection of marine biodiversity in the Arctic. The eu’s role vis-à-vis the global biodiversity regime and cross-cutting measures under the United Nations Convention on the Law of the Sea are discussed together in the final part.


Author(s):  
Martin Hassel ◽  
Ingrid Bouwer Utne ◽  
Jan Erik Vinnem

This article presents a new risk model for estimating the probability of allision risk (the impact between a ship under way and a stationary installation) from passing vessels on the Norwegian Continental Shelf (NCS). Offshore petroleum operators on the NCS are required by the Norwegian Petroleum Safety Authority (PSA) to perform risk assessments to estimate the probability of impacts between ships and offshore installations, both for field related and passing (merchant) vessels. This has typically been done using the aging industry standard COLLIDE risk model, but this article presents a new risk model based on a Bayesian Belief Network (BBN) that can replace the old COLLIDE model for passing vessels. The new risk model incorporates a wider range of risk influencing factors (RIFs) and enables a holistic and detailed analysis of risk factors, barrier elements and dependencies. Even though the risk of allision with passing vessels is very small, the potential consequences can be critical. The new risk model is more transparent and provides a better understanding of the mechanisms behind allision risk calculations. The results from the new model are aligned with industry expectations, indicating an overall satisfactory performance. The article discusses several key elements, such as the use of expert judgement to estimate RIFs when no empirical data is available, model sensitivity, and a comparative assessment of the new risk model to the old COLLIDE model.


1983 ◽  
Vol 21 (1) ◽  
pp. 1
Author(s):  
Errol P. Mendes

In the light of the "Ocean Ranger" marine disaster off the coast of Newfoundland in February, 1982, this article examines three aspects of the legal regime governing workers' claims arising from offshore accidents: whether Newfoundland's Workers' Compensation Act may constitutionally be applied to such claims; the effect of conflict of laws rules upon the availability of alternative tort actions in Canadian jurisdictions; and the availability of alternative actions in United States courts. In an appendix, the author draws attention to recent legislative developments in this field.


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