Crude Oil Quality & Processing Difficulty Data Source¶

File: 原油品质与加工难度.xlsx¶

Provider: EIA (via 同花顺iFinD) Updated: 2025-11

32 indicators covering sulfur content (%) and API gravity (degrees) by PADD region. Monthly data from 1985-01 to 2025-08. 496 rows of data.

Region	Aug 2025	Jul 2025	Jun 2025	May 2025	Apr 2025	Mar 2025
US Total	1.29	1.33	1.29	1.28	1.31	1.29
East Coast	0.94	0.91	0.88	0.95	1.01	1.25
- East Coast sub	0.82	0.78	0.74	0.84	0.88	1.13
- Appalachian #1	1.80	1.76	2.04	2.01	2.05	1.76
Midwest	1.45	1.58	1.47	1.50	1.42	1.41
- IN-IL-KY	1.66	1.84	1.65	1.63	1.55	1.51
- MN-WI-ND-SD	1.82	1.83	1.92	1.96	1.85	1.90
- OK-KS-MO	0.63	0.63	0.63	0.74	0.59	0.67
Gulf Coast	1.30	1.30	1.29	1.24	1.31	1.27
- TX inland	0.79	0.71	0.70	0.58	0.58	0.61
- TX coast	1.51	1.47	1.51	1.43	1.48	1.45
- LA coast	1.13	1.23	1.13	1.13	1.24	1.16
- N. LA-AR	1.10	1.05	0.99	1.06	1.23	1.29
- NM	1.05	0.96	0.92	1.03	0.99	1.00
Rocky Mountain	1.22	1.22	1.26	1.27	1.35	1.33
West Coast	1.10	1.17	1.12	1.18	1.17	1.21

Region	Aug 2025	Jul 2025	Jun 2025	May 2025	Apr 2025	Mar 2025
US Total	33.56	33.96	33.93	34.21	33.68	33.86
East Coast	34.68	33.51	34.63	33.65	33.87	35.15
Midwest	33.66	33.57	34.10	33.85	34.53	34.14
- MN-WI-ND-SD	28.07	27.62	27.16	26.46	28.34	25.97
- OK-KS-MO	39.24	39.56	39.52	39.03	40.31	39.94
Gulf Coast	34.41	35.15	34.69	35.37	34.39	34.46
- TX inland	40.21	40.68	41.03	39.72	39.34	40.12
- TX coast	34.78	35.12	34.72	35.19	35.23	35.39
- NM	40.69	38.26	38.28	38.20	38.31	38.09
Rocky Mountain	33.54	33.72	33.92	34.00	34.28	34.78
West Coast	29.53	29.78	30.08	29.81	28.49	29.93

Same 32 indicators, annual frequency. Data 1985-2020.

Region	2020	2019	2018	2017	2016
US Total	1.34	1.29	1.40	1.41	1.43
East Coast	0.91	0.84	0.91	0.86	0.88
Midwest	1.44	1.35	1.45	1.48	1.56
Gulf Coast	1.30	1.27	1.43	1.45	1.49
Rocky Mountain	1.49	1.41	1.48	1.41	1.38
West Coast	1.37	1.40	1.41	1.35	1.30

Region	2020	2019	2018	2017	2016
US Total	33.03	32.93	32.18	31.82	31.31
East Coast	35.70	35.45	34.80	34.34	33.53
Midwest	33.40	33.78	33.04	32.75	32.50
Gulf Coast	33.84	33.54	32.61	31.99	31.34
Rocky Mountain	32.26	33.04	32.66	33.48	33.36
West Coast	28.74	28.61	28.20	28.42	28.05

US total API gravity: 31.31 (2016) --> 33.56 (Aug 2025), an increase of +2.25 degrees
This reflects the shale revolution: tight oil from the Permian Basin is typically light sweet (API 38-42, sulfur <1%)
Texas inland API: consistently 39-41 degrees (light sweet shale crude)
MN-WI-ND-SD (Bakken region): API 26-28 degrees (heavier Canadian crude via pipelines)
West Coast: API 28-30 degrees (Alaska + heavy imports)

US total sulfur: 1.43% (2016) --> 1.29% (Aug 2025)
Driven by growing share of Permian light sweet crude displacing heavier imports
Gulf Coast remained more sour (1.24-1.31%) as it processes heavier imported grades
Oklahoma-Kansas-Missouri consistently sweet (0.59-0.74%) due to domestic light crude

Gulf Coast: Optimized for heavy sour crude (API 34-35, sulfur 1.24-1.31%), complex refineries with coking/hydrocracking capacity
West Coast: Heavy slate (API 28-30), dependent on Alaska North Slope and imported heavy grades
Midwest: Split between light sweet (OK-KS at API 39-40) and heavy sour Canadian crude (MN-WI at API 26-28)
East Coast: Shifting to lighter feed (API 33-35), sulfur declining (0.88-1.25%)

MN-WI-ND-SD sulfur spike in May-Jun 2025: 1.92-1.96%, highest in recent months -- possibly increased Canadian heavy oil sands processing
East Coast March 2025 sulfur spike to 1.25%: Unusual jump, possibly a cargo of heavier crude
Texas inland API reaching 41.03 in June 2025: Reflects pure Permian basin light crude
West Coast API stability at 28-30: Structurally dependent on heavy crude imports; no lightening trend