Alaska North Slope
$89.90USD/BBL
■ 0.00(0.00%)
- Class
- Medium/Sour
- API
- 31.9°
- Sulfur
- 0.93%
Crude grade comparison
Alaska North Slope vs Basrah Kurmala
Price, Alaska North Slope spread, quality and refinery yields side by side. Updated .
VS
Alaska North Slope – Basrah Kurmala spread
-27.72 USD/BBL · Alaska North Slope premium
Basrah Kurmala
$117.62USD/BBL
■ 0.00(0.00%)
- Class
- Medium/Sour
- API
- 32.2°
- Sulfur
- 2%
Alaska North Slope Crude vs Basrah Kurmala Crude: on July 06, 2026 Alaska North Slope settled at $89.90/bbl (0.00%) and Basrah Kurmala at $117.62/bbl (0.00%), putting Basrah Kurmala $27.72 above Alaska North Slope. Alaska North Slope is medium/sour crude (31.9° API, 0.93% sulfur); Basrah Kurmala is medium/sour crude (32.2° API, 2% sulfur).
Price history
Alaska North Slope vs Basrah Kurmala price chart
Daily assessed prices in USD per barrel and the spread between them.
- 30-day Alaska North Slope avg
- $101.33 30 shared days
- 30-day Basrah Kurmala avg
- $119.08 30 shared days
- Average spread
- -17.75 Alaska North Slope minus Basrah Kurmala
- Days Alaska North Slope above
- 0 / 30 widest $0 on
Alaska North Slope – Basrah Kurmala spread $/bbl · above zero: Alaska North Slope premium · below zero: Basrah Kurmala premium
Free view: last 30 days. Gaps mark days with no assessment. Subscribe for longer history and Excel export.
View as table
| Date | Alaska North Slope | Basrah Kurmala | Spread |
|---|---|---|---|
| 14 Apr 2026 | - | 117.62 | - |
| 07 Apr 2026 | - | 122.00 | - |
| 01 Mar 2026 | - | 117.62 | - |
| 06 Jul 2026 | 89.90 | - | - |
| 02 Jul 2026 | 89.90 | - | - |
| 01 Jul 2026 | 89.90 | - | - |
| 30 Jun 2026 | 89.90 | - | - |
| 29 Jun 2026 | 89.90 | - | - |
| 26 Jun 2026 | 89.90 | - | - |
| 25 Jun 2026 | 89.90 | - | - |
| 23 Jun 2026 | 89.90 | - | - |
| 22 Jun 2026 | 89.90 | - | - |
| 18 Jun 2026 | 104.55 | - | - |
| 17 Jun 2026 | 104.55 | - | - |
| 16 Jun 2026 | 104.55 | - | - |
| 15 Jun 2026 | 104.55 | - | - |
| 12 Jun 2026 | 104.55 | - | - |
| 11 Jun 2026 | 104.55 | - | - |
| 10 Jun 2026 | 104.55 | - | - |
| 09 Jun 2026 | 104.55 | - | - |
| 08 Jun 2026 | 104.55 | - | - |
| 04 Jun 2026 | 106.53 | - | - |
| 03 Jun 2026 | 106.53 | - | - |
| 21 May 2026 | 116.17 | - | - |
| 19 May 2026 | 116.17 | - | - |
| 15 May 2026 | 116.17 | - | - |
| 08 May 2026 | 115.54 | - | - |
| 25 Apr 2026 | 109.05 | - | - |
| 17 Apr 2026 | 90.38 | - | - |
| 10 Apr 2026 | 109.36 | - | - |
Price analysis
Highs and lows by period
| Period | Alaska North Slope | Basrah Kurmala | ||||
|---|---|---|---|---|---|---|
| High | Low | Range | High | Low | Range | |
| 7 Days | - | - | -% | - | - | -% |
| 30 Days | - | - | -% | - | - | -% |
| 90 Days | - | - | -% | - | - | -% |
| 180 Days | 116.17 | 89.9 | 22.61% | - | - | -% |
| 365 Days | 116.17 | 89.9 | 22.61% | 122 | 117.62 | 3.59% |
Range = (high − low) ÷ high.
Daily prices
Recent prices & spread
| Date | Alaska North Slope | Chg | Basrah Kurmala | Chg | Spread |
|---|---|---|---|---|---|
| 109.36 | 0 | ||||
| 90.38 | -18.98 | ||||
| 109.05 | +18.67 | ||||
| 115.54 | +6.49 | ||||
| 116.17 | +0.63 |
Full daily history for both grades since 2019 is available to subscribers.Subscribe now
Crude quality
Quality & refinery yields
How the two crudes differ in the barrel. Each property uses its own scale.
- Alaska North Slope Crude
- Basrah Kurmala Crude
Physical & chemical properties
API gravityhigher = lighter
ANS31.9°
BK32.2°
Sulfur contenthigher = sourer
ANS0.93%
BK2%
Densityhigher = heavier
ANS0.87 g/cm³
BK0.86 g/cm³
Viscosityhigher = thicker
ANS7.8 cSt
BK8.5 cSt
Pour pointhigher = waxier
ANS15 °C
BK15 °C
Typical refinery yields
Gasoline% of barrel
ANS36-40%
BK20-24%
Diesel% of barrel
ANS32-36%
BK38-42%
Jet fuel% of barrel
ANS10-12'%
BK10-12'%
Residual fuel% of barrel
ANS16-20%
BK18-22%
Bars show each yield range; the faint part runs from 0 to the low end. Scale 0–50%.
Full specification comparison
| Property | Alaska North Slope Crude | Basrah Kurmala Crude | Alaska North Slope − Basrah Kurmala |
|---|---|---|---|
| Classification | |||
| Classification | Medium/Sour | Medium/Sour | |
| Origin | USA (Alaska) | Iraq (Rumaila Kurmala layer) | |
| Chemical properties | |||
| API gravity | 31.9° API | 32.2° API | -0.3 °API |
| Sulfur content | 0.93% | 2% | -1.07% |
| Density | 0.87 g/cm³ | 0.86 g/cm³ | +0.01 g/cm³ |
| Pour point | 15 °C | 15 °C | 0 °C |
| Viscosity | 7.8 cSt | 8.5 cSt | -0.7 cSt |
| Typical refinery yields | |||
| Gasoline | 36-40% | 20-24% | +16 pts |
| Diesel | 32-36% | 38-42% | -6 pts |
| Jet fuel | 10-12'% | 10-12'% | 0 pts |
| Residual fuel | 16-20% | 18-22% | -2 pts |
| Trading & logistics | |||
| Delivery basis | Valdez, Alaska (US West Coast) | Basrah terminals | |
| Major exchanges | Platts (ANS West Coast); CME | SOMO OSP differential | |
| Export hub | Valdez, Alaska | Basrah terminals | |
| Main destinations | US West Coast, Asia | Asia | |
| Benchmark type | Regional (US WC) | Regional | |
| Market profile | |||
| Key characteristics | US West Coast benchmark, moderate sour grade | Iraqi segregated low-sulfur layer | |
| Refining notes | Moderate distillate yield; significant fuel oil portion | Quality-segregated from main crude stream | |
FAQ
Alaska North Slope vs Basrah Kurmala questions
The spread, the quality gap and why each grade is a benchmark.
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July 06, 2026 Alaska North Slope Crude was $89.90 and Basrah Kurmala Crude $117.62 per barrel, so Basrah Kurmala traded at a premium of $27.72 over Alaska North Slope. Over the previous 30 shared price days the spread averaged -17.75 $/bbl, with Basrah Kurmala priced above Alaska North Slope on 0 day(s).
Alaska North Slope Crude is a medium/sour USA (Alaska) crude (31.9° API, 0.93% sulfur) and Regional (US WC) benchmark. Basrah Kurmala Crude is a medium/sour Iraq (Rumaila Kurmala layer) crude (32.2° API, 2% sulfur) and Regional benchmark.
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