METHANE EMISSION MANAGEMENT STRATEGIES

Methane (CH4) is a primary component of natural gas, when emitted directly into the atmosphere, it is a potent greenhouse gas. According to Intergovernmental Panel on Climate Change (IPCC), Methane has a 100-year global warming potential 25-30 times to that of Carbon dioxide (CO2), and a 100-year global temperature potential 6-fold greater than CO2. IPCC further estimates the Global Warming Potential (GWP) of fossil methane is 85 times greater than CO2 over a 20-year period.

The main sources of anthropogenic methane emissions are agriculture, including: fermentation, manure management, crop cultivation, landfills, wastewater treatment, coal mines, and the oil and gas industries.

PT Anglo Euro Energi Indonesia is focusing on sources of emissions in oil & gas industries which includes amongst others:

1. Casinghead venting from oil wells
2. Liquids unloading from gas wells through plunger lift systems and Smart Well technology
3. Natural gas driven pneumatic controllers and pumps
4. Venting of associated gas at upstream oil production facilities
5. Venting of associated gas at oil production facilities
6. Improve combustion efficiency of flared gas systems
7. Equipment depressurisation and blowdowns from pipelines and facilities
8. Component and equipment leaks

DECARBONISATION PROJECTS

Carbon Capture and Storage (CCS) combined with CO2-Enhanced Oil Recovery (EOR) is an economical and effective method for the reduction of carbon emissions.

Combined with CCS techniques, CO2-Enhanced Oil Recovery (EOR) has been applied to reduce CO2 emissions, resulting in a net zero emission of CO2. Carbon is stored underground during oil production, resulting in a significant improvement of oil production through CO2 injection into reservoirs compared to the conventional water injection production.

CO2-EOR provides a green and economical way to improve oil production in aged, low producing oil wells. The crude oil that is derived from CO2-EOR is generally termed as “carbon negative oil”.