Prudhoe Bay Crude Oil Topping Unit (COTU)
Hilcorp North Slope, LLC · Hilcorp Energy Company (Hilcorp Alaska) · Prudhoe Bay, AK
- bpd crude capacity · EIA 2026
- 6,500
- pipelines it injects into
- 0
- delivery points reachable
- 0
- terminals on those points
- 0
- events on record
- 3
Capability
Crude distillation 6,500 bpd operable, 6,500 operating (EIA-820, as of 2026-01-01). Downstream units below, barrels per calendar day.
Crude slate
Processed North Slope crude drawn from the Endicott/Badami/FS2 oil transit line, a blend of those streams, as described in the Alaska Division of Oil and Gas 2007 report.
Crude in & products out
| Direction | Mode | Route | Point / origin | Products | Source |
|---|---|---|---|---|---|
| crude in | pipeline | Endicott/Badami/FS2 oil transit line (Prudhoe Bay Unit) The unit takes a metered slipstream of processed crude from the oil transit line. After the fuel cut is distilled off, all remaining residual oil, naphtha and trace water are re-injected into the same line. This is the state's 2007 description, from when BP operated the unit. No merchant crude pipeline or dock feeds the plant. |
Processed crude in the in-field transit line that carries Endicott, Badami and Flow Station 2 production | crude | source |
| products out | truck rack | Prudhoe Bay topping unit fuel distribution (Hilcorp North Slope) Arctic heating fuel (arctic diesel) and Jet-A go to the unit's storage tanks. Most is used by the Prudhoe Bay operation, the excess goes to other North Slope operations, and none is shipped south of the Brooks Range. In 2007 each of two parallel plants ran about 7,000 to 8,000 b/d of crude and made 1,200 to 1,400 b/d of fuel, 97% arctic heating fuel and 3% Jet-A; diesel has been delivered by truck. |
Prudhoe Bay Operations Center | distillate jet fuel | source |
Pipeline reach
No tariff origin point is linked to this refinery yet.
Substitutes
No other refinery shares a tariff system with this one in our data.
Events
-
2025-12
other
Alaska Division of Oil and Gas approved a name change for the Prudhoe Bay operator from 'Hilcorp North Slope' to 'Hilcorp Alaska.' source
-
2024-07
other
Alaska DEC renewed the Title V air quality operating permit (AQ0265TVP04) for the Crude Oil Topping Unit. source
-
2020-06-30
sale
Hilcorp Alaska acquired BP Exploration (Alaska) Inc. from Standard Oil Co., renamed the operating entity Hilcorp North Slope and became operator at Prudhoe Bay. A state press release of June 29, 2020 said Hilcorp would assume the role of operator of the Prudhoe Bay unit. source
Rates are pipeline line-haul transcribed from published FERC tariffs; every figure cites its tariff and item. Cost to serve (netback) adds origin spot price and destination fees. "Confirmed" links match a tariff delivery point to the facility; "same city" means the point is in the facility's city — plausible, not proof; "per research" means the facility's research profile names the pipeline as an outlet.