Part III: Flare Reduction Project Family - IPIECA

Section 7. Flare Reduction Project Family
compression to prepare this gas for use as fuel in the generator engine drivers in the
project scenario. 22 Similarly, the minor combustion and fugitive emissions associated
with oil-gas separation in the baseline scenario are unchanged by implementation of the
project.
• All of the gas flared in the baseline scenario is used as fuel in the project scenario.
However the quantity of gas is sufficient to meet only 90% of the required annual fuel
stream to the replacement engines, with the remaining 10% of the fuel still supplied in the
form of crude oil.
• Electric power generating capacity in the baseline scenario using the existing engines is
950 kW. The thermal efficiency of these engines burning only crude oil is 28%. Most of
the produced electrical energy is used to drive electric pumps for shipment of the
remaining produced crude oil to an off-site destination.
What the project will change:
• The quantity of crude oil used for power generation in the project scenario is 2,362
barrels per year. This scenario thus enables 11,601 additional barrels of crude to be
shipped to markets compared with the baseline scenario. The increase in fugitive
emissions associated with this increment of crude oil shipping is negligibly small.
• Electric power generating capacity in the project scenario uses new, more efficient
engines rated at 1350 kW, and these engines are configured to operate on both associated
gas and crude oil fuel. The thermal efficiency of the replacement engines is 33% on
associated gas fuel and 30% on crude oil.
EXHIBIT 7.3:
Flare Gas Recovery for On-Site Power Generation
Project Information (based on hypothetical, measured data):
• 2.62×10 6 m 3 /year (92.56×10 6 scf/yr) of processed associated gas is sent to the flare in
the baseline scenario.
• The carbon content of the processed associated gas is 0.65 kg carbon/m 3 (0.0404 lb
C/scf).
• In the baseline scenario, crude oil fuel consumption for operation of the internal
combustion engine drivers used to generate electricity for on-site combustion is 13,963
barrels per year.
• Average carbon content of the produced crude after gas and water separation is 85%
by weight, and the higher heating value of this crude oil is 570 MMBtu/barrel.
22 As noted previously, if gas dehydration and compression equipment were not present in the baseline scenario,
their addition in the project scenario would create new emissions.
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