Taking offshore methane measurements to new levels
Understanding and addressing methane emissions is an important step toward net zero, but traditional methodologies of reporting emissions at source level are under increasing scrutiny.
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REPSOL
In 2018, Repsol introduced a comprehensive set of internal metrics, targets and action plans to ensure meaningful progress towards climate change mitigation.
By 2025, Repsol aims to reduce annual upstream greenhouse gas emissions by 3 MtCO2e per year, reduce upstream operated methane emissions intensity by 25% and halve routine flaring. In addition, Repsol is committed to reducing its carbon intensity by 3% by 2020, compared to 2016, with the ambition to reach a reduction of 40% by 2040, in line with the Paris Agreement.
With methane emissions reduction core to these programmes, Repsol has successfully piloted new-generation membranes in one of its offshore assets in South East Asia.
Due to high carbon dioxide content in the gas produced from the reservoir, several membrane separation trains are required to purify the natural gas to meet quality specifications. By upgrading the membranes, Repsol was able to increase the membrane system selectivity, while also increasing the methane recovery rate.
A membrane skids replacement schedule has now been established, and Repsol has already achieved a reduction of more than 70,000 tonnes of carbon dioxide equivalent. Repsol is sharing its experience as companies strive to re-duce methane emissions in their operations.
What OGCI member companies are doing to reduce methane emissions
Member companies are expanding leak detection and repair campaigns, removing high-emitting devices, and reducing both flaring and venting.
TotalEnergies and Qnergy remove 98% of vented methane emissions
Across many of the world’s natural gas production fields, gas pneumatic devices used for process control and chemical injection vent methane directly into the air.
EXXONMOBIL – Methane management in unconventional operations
ExxonMobil is progressing a comprehensive methane management programme which is on track to meet its goal of reducing methane emissions by 15% in 2020, compared to 2016.
REPSOL – New generation membrane technology reduces emissions
In 2018, Repsol introduced a comprehensive set of internal metrics, targets and action plans to ensure meaningful progress towards climate change mitigation.
SAUDI ARAMCO – Getting results with leak detection and repair
Saudi Aramco’s leak detection and repair programme, enables the mitigation of fugitive leaks, one of the largest sources of methane emissions in the industry.
ENI – Investing in flaring reduction
Having reduced upstream operated carbon intensity by 20% since 2014, Eni is on track to achieve its company target of 43% reduction by 2025.
CNPC – Tackling methane emissions
Reducing upstream methane emissions from oil and gas operations is an important component of CNPC’s Green Action Plan
BP – Mapping and capping methane emissions with Kairos Aerospace
bp has pledged to measure its methane emissions by 2023 and has enlisted Kairos to conduct aerial surveys.
