In very round numbers:
- US storage: 500 million bbls
- Saudi storage: 250 million bbls
- global demand: 100 million bbls/day
- daily production:
- US: 12 million bopd
- Russia: 11 million bopd
- Saudi Arabia: 10 million bopd
In recent weeks, the crude oil adjustment has been growing in absolute value, as high as 881,000 barrels for the week ending May 24.In my book, 881,000 bbls can be rounded to one million bbls.
The U.S. Energy Information Administration’s (EIA) Weekly Petroleum Status Report (WPSR) provides weekly estimates of U.S. crude oil supply, including a measure of how well the supply of crude oil and the disposition of crude oil balance with each other.
This measure—referred to as the adjustment—is a derived term equal to the difference between supply and disposition. If the reported supply and disposition of crude oil balanced perfectly each week, the adjustment would equal zero. For several reasons, however, this is rarely the case.
Weekly U.S. crude oil supply and disposition data are based on a combination of EIA survey data, U.S. Customs and Border Protection data, and modeled estimates. All statistical samples using survey data have small but unavoidable imprecisions, and model estimated data’s precision can vary. This imprecision in estimating each element of the crude oil balance can result in some over- and under-estimation in both supply and disposition.
In recent weeks, the crude oil adjustment has been growing in absolute value, as high as 881,000 barrels [sic; see comment below] for the week ending May 24.
However, this is still relatively small, when compared with the entire U.S. crude oil balance, less than 2.5% on a rolling four-week average basis (the sum of production, imports, exports, and refinery inputs) (Figure 1 at the linked article).
Although an increased adjustment is, in some part, the result of the inherent challenge of estimating perfectly each reporting period, increasing volumes of U.S. crude oil production and exports and other factors may also play a role. EIA will continue to evaluate crude oil data to identify possible sources of the higher crude oil adjustment.
Week
|
Week Ending
|
Change
|
Million Bbls Storage
|
Week 0
|
November 21, 2018
|
4.9
|
446.9
|
Week 1
|
November 28, 2018
|
3.6
|
450.5
|
Week 2
|
December 6, 2018
|
-7.3
|
443.2
|
Week 3
|
December 12, 2018
|
-1.2
|
442.0
|
Week 4
|
December 19, 2018
|
-0.5
|
441.5
|
Week 5
|
December 28, 2018
|
0.0
|
441.4
|
Week 6
|
January 4, 2019
|
0.0
|
441.4
|
Week 7
|
January 9, 2019
|
-1.7
|
439.7
|
Week 8
|
January 16, 2019
|
-2.7
|
437.1
|
Week 9
|
January 24, 2019
|
8.0
|
445.0
|
Week 10
|
January 31, 2019
|
0.9
|
445.9
|
Week 11
|
February 6, 2019
|
1.3
|
447.2
|
Week 12
|
February 13, 2019
|
3.6
|
450.8
|
Week 13
|
February 21, 2019
|
3.7
|
454.5
|
Week 14
|
February 27, 2019
|
-8.6
|
445.9
|
Week 15
|
March 6, 2019
|
7.1
|
452.9
|
Week 16
|
March 13, 2019
|
-3.9
|
449.1
|
Week 17
|
March 20, 2019
|
-9.6
|
439.5
|
Week 18
|
March 27, 2019
|
2.8
|
442.3
|
Week 19
|
April 3, 2019
|
7.2
|
449.5
|
Week 20
|
April 10, 2019
|
7.0
|
456.5
|
Week 21
|
April 17, 2019
|
-1.4
|
455.2
|
Week 22
|
April 24, 2019
|
5.5
|
460.1
|
Week 23
|
May 1, 2019
|
9.9
|
470.6
|
Week 24
|
May 8, 2019
|
-4.0
|
466.6
|
Week 25
|
May 15, 2019
|
5.4
|
472.0
|
Week 26
|
May 22, 2019
|
4.7
|
476.8
|
Week 27
|
May 30, 2019
|
-0.3
|
476.5
|
Week 28
|
June 5, 2019
|
6.8
|
483.3
|
Week 29
|
June 12, 2019
|
2.2
|
485.5
|
Week 30
|
June 19, 2019
|
-3.1
|
482.4
|
Week 31
|
June 26, 2019
|
-12.8
|
469.6
|
Week 32
|
July 3, 2019
|
-1.1
|
468.5
|
Week 33
|
July 10, 2019
|
-9.5
|
459.0
|
Week 34
|
July 17, 2019
|
-3.1
|
455.9
|
| $55.16 | 7/18/2019 | 07/18/2018 | 07/18/2017 | 07/18/2016 | 07/18/2015 |
|---|---|---|---|---|---|
| Active Rigs | 55 | 67 | 59 | 30 | 73 |