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Australian Energy Producers Journal Australian Energy Producers Journal Society
Journal of Australian Energy Producers
RESEARCH ARTICLE (Non peer reviewed)

Greenhouse gases emissions evaluation for prospective energy projects

Emelyn Ang A * and Munish Kumar A
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- Author Affiliations

A ERCE APAC, Singapore, Singapore.

* Correspondence to: eang@erce.energy

The APPEA Journal 62 S1-S6 https://doi.org/10.1071/AJ21106
Accepted: 11 March 2022   Published: 13 May 2022

© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of APPEA.

Abstract

Greenhouse gas (GHG) inventory assessment, monitoring and auditing is becoming increasingly routine in oil and gas project evaluations. Already, some companies carry an ‘internal’ carbon cost reflected in projected capital and operational expenditure. Early evaluation allows for optimal planning of GHG mitigation and economic analysis inclusive of carbon costs, allaying concerns of investors and lenders. The challenge in evaluating pre-development, however, is the lack of real data and thus, uncertainties in field production. In this paper, we demonstrate the use of a Monte Carlo probabilistic method to better account for uncertainties in production, gas-oil ratio (GOR) and operation loads in a case study of a prospective oil field in offshore Western Australia. We compared the results to the scenario-based deterministic GHG emissions evaluation of the same field and found the deterministic estimates to be extreme representatives of the range of possible emission quantities, due to GOR and production uncertainties. From a breakdown of annual emissions, we also identified the emissions from flaring of excess natural gas to be one of the most significant mitigatable sources of emissions, due to the unexpectedly large production of gas over the project lifetime. Avoiding the flaring of excess gases alone could reduce the project’s emissions by ~44%. Through identifying these key sources and uncertainties, we are able to flag such unexpected, mitigatable sources of emissions at an early stage and provide a representative range of projected emissions, thus assisting the operator to make informed decisions in the field development.

Keywords: Australia, carbon, carbon audit, carbon costs, carbon credit, carbon forecast, carbon intensity, carbon mitigation, development, emissions, emissions forecast, energy, exploration, forecast, fuel consumption, fuel emissions, GHG inventory, greenhouse gases, lifetime emissions, Monte Carlo, oil and gas emissions, Scope 1 emissions.

Emelyn Ang is a Geoscientist at ERC Equipoise, based in Singapore. She holds a BSc degree in Environmental Earth Systems Science from Nanyang Technological University, with a specialisation in Geosciences. At ERCE, she has developed strong skills towards the evaluation of reserves, contingent and prospective resources, exploration, development and production projects, including economic/commercial evaluation. Her work includes volumetric calculation, geological risking, depth conversion and seismic interpretation. She is also familiar with logging and core analysis and as a geoscientist, routinely works with multitudes of data types and forms. Emelyn is also trained as a greenhouse gas (GHG) emissions inventory specialist, where she works with energy professionals to evaluate hydrocarbon project emissions, in accordance with ISO 14064 guidelines for emissions reporting. Aside from oil and gas, Emelyn has performed GHG evaluations for solar projects and downstream operations.

Munish Kumar is currently a Staff Petrophysicist with ERCE based in Singapore, where he works on matter related to reserves auditing, M&A due diligence, technical expert support in legal matters and greenhouse gas evaluation and validation. His experience spans across most of Asia (Indonesia, Myanmar, Sri Lanka, China, Brunei, Malaysia (incl. Sabah)), PNG, Australia, Gulf of Mexico, Mexico, Alaska, Africa, Cuba, Russia, Ukraine and Brazil. He has previously worked as a Sr Petrophysicist with Total Asia Pacific Exploration (Singapore) where he focused on operational petrophysics and formation evaluation of assets in Asia, Australia and the Pacific region. Prior to this, he was a Sr Petrophysicist with ExxonMobil (Exploration, Development and Production) in Australia and Houston. He has a PhD in Physics and Engineering (Applied Mathematics and Physics) from the Australian National University (2010) and a BEng (Hons) in Electrical and Computer Engineering from the National University of Singapore (2005). His interests include multiphase flow in reservoir systems, core analysis, computer vision and image analysis, machine learning and data analytics applications to oil and gas challenges, renewables and carbon capture and storage. He is a member of the Society of Petrophysicists and Well Log Analysts (SPWLA) and Society of Petroleum Engineers (SPE).


References

Adland R, Cariou P, Wolff F-C (2019) When energy efficiency is secondary: the case of offshore support vessels. Transportation Research Part D: Transport and Environment 72, 114–126.
When energy efficiency is secondary: the case of offshore support vessels.Crossref | GoogleScholarGoogle Scholar |

Allahyarzadeh-Bidgoli A, Dezan DJ, Salviano LO, de Oliveira Junior S, Yanagihara JI (2020) Lifetime sensitivity analysis of fpso operating parameters on energy consumption and overall oil production in a pre-salt oil field. Chemical Engineering Communications 207, 1483–1507.
Lifetime sensitivity analysis of fpso operating parameters on energy consumption and overall oil production in a pre-salt oil field.Crossref | GoogleScholarGoogle Scholar |

American Petroleum Institute (2021) Compendium of greenhouse gas emissions estimation methodologies for the oil and natural gas industry. American Petroleum Institute. Available at https://www.api.org/~/media/Files/Policy/ESG/GHG/2021-API-GHG-Compendium-110921.pdf

Australian Government (2020) National Greenhouse Accounts Factors. pp. 22–33. Department of Industry, Science, Energy and Resources. Available at https://www.industry.gov.au/data-and-publications/national-greenhouse-accounts-factors-2020

Fugro (2014) M.V. Fugro Pioneer specification sheet. Available at https://media.fugro.com/media/docs/default-source/about-fugro-doc/vessels/fugro-pioneer.pdf?sfvrsn=b16cdb19_0

IHS Markit (2021) IHS Markit Global Carbon Index (USD). Available at https://ihsmarkit.com/products/global-carbon-index.html

IPIECA/API/OGP (2011) ‘Petroleum Industry Guidelines for Reporting Greenhouse Gas Emissions.’ 2nd edn. OGP Report Number 446. Available at https://www.ipieca.org/resources/good-practice/petroleum-industry-guidelines-for-reporting-greenhouse-gas-emissions-2nd-edition/

ISO/TC 207/SC 7 (2018) Greenhouse gases — Part 1: Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals. ISO 14064-1:2018. Available at https://www.iso.org/standard/66453.html

MMA Offshore (2015) MMA Plover platform supply vessel general specifications. Available at https://www.mmaoffshore.com/vessel-fleet/mma-plover

Offshore Technology (2017) Project: Kraken Oil Field, North Sea. Available at https://www.offshore-technology.com/projects/kraken-oil-field-north-sea/

Slav I (2021) Banks put pressure on oil companies to go green. Available at https://oilprice.com/Energy/Energy-General/Banks-Put-Pressure-On-Oil-Companies-To-Go-Green.html

Solar Turbines Inc. (2020) Titan 130 Gas Turbine Generator Set Specifications. Available at https://www.solarturbines.com/en_US/products/gas-compressor-packages/titan-130.html

Subsea 7 (2007). Seven Oceans Datasheet. Available at https://www.subsea7.com/content/dam/subsea7-corporate2018/Datasheets/Vessel/rigid-pipelay-heavy-lift/Seven%20Oceans.pdf.downloadasset.pdf

Subsea 7 (2010) Seven Falcon Datasheet. Available at https://www.subsea7.com/content/dam/subsea7-corporate2018/Datasheets/Vessel/diving-support/Seven%20Falcon.pdf.downloadasset.pdf

Subsea 7 (2012) Seven Borealis Datasheet. Available at https://www.subsea7.com/content/dam/subsea7-corporate2018/Datasheets/Vessel/rigid-pipelay-heavy-lift/Seven%20Borealis.pdf.downloadasset.pdf

Task Force on Climate-related Financial Disclosures (2021) Implementing the Recommendations of the Task Force on Climate-related Financial Disclosures. Available at https://assets.bbhub.io/company/sites/60/2021/07/2021-TCFD-Implementing_Guidance.pdf