Underwater robots: a review of technologies and applications

Author(s):  
Robert Bogue

Purpose This paper aims to provide details of underwater robot technology and its applications. Design/methodology/approach Following an introduction, this article first discusses remotely operated vehicle (ROV) technology and applications and then considers their use in the emerging field of deep-sea mining. It then discusses autonomous underwater vehicle (AUV) technology and its applications, including sub-sea gliders. Finally, brief concluding comments are drawn. Findings ROVs were first developed in the 1950s for military applications. They are now widely used by the offshore oil and gas sector and other industries and are being developed for deep-sea mining. AUV technology has progressed rapidly in recent years and AUVs, including sub-sea gliders, are now emerging from their original role in oceanographic research and finding growing uses in the defence and offshore energy sectors. Originality/value This provides a detailed insight into underwater robot technologies, products and applications.

Subject The outlook for offshore oil. Significance A recent offshore oil and gas find has given Guyana hope of becoming a significant oil producer. However, while this and an earlier find are encouraging and further exploration is planned, the current uncertain economic environment and fluctuating oil prices suggest that bringing these finds into production is not guaranteed. Impacts Oil exploration activity may prompt a flare-up of the continuing border dispute with Venezuela. A major offshore oil find would have a very significant impact on Guyana's GDP of some 4 billion dollars. However, over-optimism could lead to borrowing against an expected future windfall, or the temptation to prioritise 'vanity' projects.


Significance The bids came from Greece’s Energean, an existing investor, and a consortium of Indian firms; there was little wider international interest. Neighbouring Lebanon’s first offshore oil and gas exploration round, which closed on October 12, was similarly disappointing, with just two bids received from one consortium consisting of France’s Total, Italy’s Eni and Russia’s Novatek. Impacts Political uncertainties following the resignation of Lebanese Prime Minister Saad al-Hariri could slow hydrocarbons exploration. The Lebanese government will be under domestic political pressure from NGOs to ensure transparency in its award of exploration licences. Israel will launch further bid rounds for the remaining blocks, but these are unlikely to produce a different result.


2016 ◽  
Vol 161 ◽  
pp. 673-694 ◽  
Author(s):  
Tuong-Van Nguyen ◽  
Laurence Tock ◽  
Peter Breuhaus ◽  
François Maréchal ◽  
Brian Elmegaard

Subject Indian-Israeli cooperation in defence trade and manufacturing. Significance Indian Prime Minister Narendra Modi’s visit to Israel in July raised relations between the two countries to what was described in a joint statement as a "strategic partnership". Defence cooperation featured in talks between Modi and his Israeli counterpart Binyamin Netanyahu. Impacts India will struggle to meet its target of reducing imported defence products by 40% within the next ten years. India’s Oil and Natural Gas Corporation is likely to bid for Israeli offshore oil-and-gas exploration blocks. Closer relations between India and Iran may raise concerns in Israel.


Subject Hydrocarbons in Bahrain’s economy. Significance A potentially game-changing offshore oil and gas discovery could offer fresh hope for Bahrain’s weak public finances and broader economic woes. The find, announced in April, comes at a time when -- although its recent economic performance has been stronger than anticipated -- there has been medium-term stagnation in some of the sectors at the heart of Manama’s diversification efforts. Impacts Renewed gas production could render obsolete the liquefied natural gas import terminal due for completion in 2019. The hope of new oil wealth could support an upgrade in Bahrain’s credit rating and lower borrowing costs. Neighbouring Gulf states may be increasingly less inclined to make valuable grants, after reports of newfound oil wealth.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Alberto Moscatello ◽  
Anna Chiara Uggenti ◽  
Gaetano Iuso ◽  
Domenic D'Ambrosio ◽  
Gioacchino Cafiero ◽  
...  

Purpose The purpose of this paper is to present a procedure to design an experimental setup meant to validate an innovative approach for simulating, via computational fluid dynamics, a high-pressure gas release from a rupture (e.g. on an offshore oil and gas platform). The design is based on a series of scaling exercises, some of which are anything but trivial. Design/methodology/approach The experimental setup is composed of a wind tunnel, the instrumented scaled (1:10) mock-up of an offshore platform and a gas release system. A correct scaling approach is necessary to define the reference speed in the wind tunnel and the conditions of the gas release to maintain similarity with respect to the real-size phenomena. The scaling of the wind velocity and the scaling of the gas release were inspired by the approach proposed by Hall et al. (1997): a dimensionless group was chosen to link release parameters, wind velocity and geometric scaling factor. Findings The theoretical scaling approaches for each different part of the setup were applied to the design of the experiment and some criticalities were identified, such as the existence of a set of case studies with some release parameters laying outside the applicability range of the developed scaling methodology, which will be further discussed. Originality/value The resulting procedure is one of a kind because it involves a multi-scaling approach because of the different aspects of the design. Literature supports for the different scaling theories but, to the best of the authors’ knowledge, fails to provide an integrated approach that considers the combined effects of scaling.


Sign in / Sign up

Export Citation Format

Share Document