Sustainable Use and Production of Energy in the 21st Century

Sustainable Use and Production of Energy in the 21st Century

Ove T. Gudmestad Kjell Traa 

Department of Mechanical and Structural Engineering and Material Science, University of Stavanger, Norway

Kjell Traa Consulting, Norway

| |
| | Citation



It is foreseen that oil and gas will continue to be the key energy sources in the 21st century. Therefore, it is important that oil and gas be produced in a sustainable way during the next decades. This requires technology development to ensure that the environmental impact and pollution from these activities are minimal. The following aspects are being highlighted in this paper:

•  Development of projects with the minimum of impact on the environment and problems for local populations.

• Sustainable drilling without the use of oil-based mud, and collection of all drilling waste during offshore drilling operations in the most environmentally sensitive areas.

• Treatment of produced water, sand and minerals from the well stream to avoid pollution.

• Limitation of flaring to be performed only when required for safety reasons.

• Continuous checking of pipelines to ensure that gas pipelines are run within their actual pressure capacity and that oil pipelines are not leaking into rivers and lakes.

• Provision of sufficient storage capacity for gas to ensure timely delivery of gas during high demand peaks.

• Injection of CO2 into sealed underground formations where large quantities are produced, such as at LNG factories.

•  Optimization of production from existing fields to avoid huge amounts of oil and gas being left in place, following a ‘hit and run’ recovery plan.

Furthermore, all primary energy sources need to be converted into end-user energy services known as mechanical work, electricity, heating and cooling. In the process of conversion, only a portion of the primary energy is transformed into the new form, while the rest remains unaltered and is lost.

The various forms of energy services produced represent different values or qualities, e.g. heat holds an energy quality ranging from 0 and upwards, depending on the temperature difference which is utilized, as defined by the second law of thermodynamics. Energy efficiency in this context may also be defined as the ratio between energy quality output and input.

Practically, all fossil fuels are converted into energy services via combustion and heat, i.e. the con- version efficiency is solely determined by temperatures, meaning that high-energy efficiency can only be obtained at large temperature differences, such as in power generation, while ordinary domestic heating will yield a very low efficiency.

Given that some 30–40 % of all fossil fuels today are used for domestic heating, representing an end-user energy quality of (say) 1/10 of what is obtained in modern power generation, there is a large potential globally for energy efficiency improvements, not to mention the associated emission reduc- tions.

The obvious solution is to pay more attention to the second law of thermodynamics, i.e. to shift from direct combustion heating to thermodynamic principles, e.g. by the use of electrical-driven heat pumps and/or combined heat and power as another alternative.

The objectives of this paper are to highlight how energy production could become more effective, thus leading to a reduction in pollution to land, sea and atmosphere and also to identify how energy production should be carried out to minimize the polluting effects. The goal is to provide a reminder that much can be gained with respect to the reduction of pollution by focusing on cleaner energy production.


efficiency, electricity, energy, environment, flaring, pollution, sustainable oil and gas production


[1], accessed on 30 November 2013.

[2], accessed on 30 November 2013. [3] On 15 December 2011, the European Commission adopted the Communication ‘Energy Roadmap 2050’, whereby the EU is committed to reducing greenhouse gas emissions to 80–95% below 1990 levels by 2050, in the context of necessary reductions by devel- oped countries as a group.

[4] The UK Carbon Plan, published in December 2011, sets out the Government’s plans for achieving the emissions reductions committed to in the first four carbon budgets, on a pathway consistent with meeting the 2050 target.

[5] United States Environmental Protection Agency. Clean energy, air emissions. http://, accessed on 30 November 2013.

[6] OGP, Environmental performance indicators – 2012 data. OGP, London, Report No. 2012e, November 2013.

[7] Ospar Commission, Quality Status Report, Chapter 7, 2010. en/ch07_01.html.

[8] IPIECA and OGP, Preparing effective flare management plans. Guidance document for the oil and gas industry, OGP Report No. 467, IPIECA and OGP, London, 2011, http://

[9] Chamanski, A., Statoil experience with UGS, The International Conference “Under- ground Gas Storage: Sustainability and Efficiency” (“UGS-2006”), 11–13 October 2006, Moscow, Russia.

[10] Statoil, Sleipner Vest, From Statoil’s homepage: gyinnovation/protectingtheenvironment/carboncaptureandstorage/pages/carbondioxi- deinjectionsleipnervest.aspx

[11] Farmer, C.L. & Gurpinar, O. Evaluation of field management systems, IPAM, Uni- versity of California, L.A. Schlumberger presentation top Industrial Problems Study Group, September, 2003,

[12] Traa, K., Efficient use of energy, Proceedings of “Petroleum 2012”, WIT Transactions in Engineering Sciences, 81, pp. 1–14, 2012. ISBN: 978-1-84564-758-2, Edited by F.M Khoshnaw, Koya University, Kurdistan, December 2012.

[13] Gudmestad, O.T. Sustainable oil and gas production in the 21st century with emphasis on offshore fields, Energy and Management in the 21st century, Proceedings of Energy Quest 2014, Ekaterinburg, Russia. WIT Transactions on Ecology and the Environment, 190, pp. 777–788, 2014, ISSN 1743-3541. doi: