Carbon Intensity
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CO2 intensity of coal production?
Producing a ton of coal typically emits 0.19T of CO2, equivalent to 50kg/boe. The numbers comprise mining, methane leaks and transportation. Hence domestic coal production will tend to emit 2x more CO2 than gas production, plus c2x more CO2 in combustion. However, numbers vary widely based on input assumptions, such as methane lakage rates, btu content…
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Platform supply vessels: what contribution to CO2?
This data-file calculates the contribution of Platform Supply Vessels (PSVs) to an oil and gas asset’s emissions. Our base case estimate is 0.1kg/boe for a productive asset in a well-developed basin. Numbers rise 4x in a remote basin, and by another c4x for smaller fields. 1kg/boe is possible. These emissions can be lowered by 10-20% through…
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Oil Sands CO2 Intensity
This data-file quantifies the CO2 intensity of oil sands mining and SAGD, line by line, based on real-world data. We also derive a CO2 curve ranking c2.5Mbpd of production across Alberta, to compare different operators. Steam-oil-ratios explain c60% of the variance in SAGD assets’ emissions.
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Methane Leaks from Downstream Gas Distribution
Methane leakages average 0.2% when distributing natural gas to end-customers, across the US’s 160 retail gas networks. Leakages are most correlated with the share of sales to smaller customers. 80 distinct gas companies are ranked in this data-file. State-owned utilities appear to have 2x higher leakage rates versus public companies.
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CO2 intensity of shale: breakdown by category?
This model disaggregates the CO2 emissions of producing shale oil, across 14 different contributors: such as materials, drilling, fracturing, supply chain, lifting, processing, methane leaks and flaring. CO2 intensity can be flexed by changing the input assumptions. Our ‘idealized shale’ scenario follows in a separate tab, showing how Permian shale production could become ‘carbon neutral’.
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Methane emissions detract from natural gas?
With methane emissions fully controlled, burning gas is c60% lower-CO2 than burning coal. However, taking natural gas to cause 120x more warming than CO2 over a short timeframe, the crossover (where coal emissions and gas emissions are equivalent) is 4% methane intensity. The gas industry must work to mitigate methane.
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Gas Gathering: how much CO2 and Methane?
Gas gathering and gas processing are 50% less CO2 intensive than oil refining. Nevertheless, these processes emitted 18kg of CO2e per boe in 2018. Methane matters most, explaining 1-7kg/boe of gas industry CO2-equivalents. This data-file assesses 850 US gas gathering and processing facilities, to screen for leaders and laggards, by geography and by operator.
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CO2 Intensity of Oilfield Supply Chains
What is more CO2-intensive: the c4,000 truck trips needed to complete a shale well, or giant offshore service vessels (OSVs), which each consume >100bpd of fuel? This data-file quantifies the CO2 intensity of supply-chains, for 10 different resource types, as a function of 30 input variables.
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Permian CO2 Emissions by Producer
This data-file tabulates Permian CO2 intensity, based on regulatory disclosures from 20 of the leading producers to the EPA. The data are disaggregated by company, across 18 different categories, such as combustion, flaring, venting, pneumatics, storage tanks and methane leaks. There are opportunities to lower emissions.
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CO2 Intensity of Drilling Oil Wells?
This data-file estimates the CO2 intensity of drilling oil wells, based on the fuel consumption of different rig types. Drilling wells is not the largest portion of the oil industry’s total CO2 intensity. Nevertheless there is a 50x spread between the best barrels at prolific onshore fields and the worst barrels at mature deepwater assets.
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