Page 286 - Annual Report 2020

Millions of barrels Australia United States Other (c) Total
Proved developed and undeveloped NGL reserves (a)
Reserves at 30 June 2017 65.2 58.9 (d) (e) – 124.0 (d) (e)
Improved recovery – – – –
Revisions of previous estimates (1.7) 12.7 0.1 11.0
Extensions and discoveries – 13.4 – 13.4
Purchase/sales of reserves – (1.7) – (1.7)
Production (b) (7.0) (11.3) (0.1) (18.3)
Total changes (8.7) 13.1 – 4.4
Reserves at 30 June 2018 56.5 72.0 (d) (e) – 128.4 (d) (e)
Improved recovery – – – –
Revisions of previous estimates 4.9 0.8 0.0 5.7
Extensions and discoveries 0.2 0.1 – 0.2
Purchase/sales of reserves – (58.7) – (58.7)
Production (b) (6.3) (5.1) (0.0) (11.4)
Total changes (1.2) (62.9) – (64.1)
Reserves at 30 June 2019 55.2 9.1 – 64.3
Improved recovery – – – –
Revisions of previous estimates (17.8) 1.2 – (16.6)
Extensions and discoveries 0.3 – – 0.3
Purchase/sales of reserves – – – –
Production (b) (6.5) (1.2) – (7.6)
Total changes (23.9) – – (23.9)
Reserves at 30 June 2020 31.3 9.0 – 40.4
Developed
Proved developed NGL reserves
as of 30 June 2017 56.6 31.4 – 88.0
as of 30 June 2018 49.8 37.0 – 86.8
as of 30 June 2019 46.5 4.3 – 50.8
Developed reserves as of 30 June 2020 23.8 5.0 – 28.8
Undeveloped
Proved undeveloped NGL reserves
as of 30 June 2017 8.6 27.5 – 36.1
as of 30 June 2018 6.6 35.0 – 41.6
as of 30 June 2019 8.7 4.8 – 13.5
Undeveloped reserves as of 30 June 2020 7.6 4.0 – 11.6
(a) Small differences are due to rounding to first decimal place.
(b) Production includes volumes consumed by operations.
(c) ‘Other’ comprises Algeria,Trinidad and Tobago and the United Kingdom (sold in FY2019).
(d) For FY2017 and FY2018 amounts include 2.1 and 2.5 million barrels respectively, consumed as fuel in the United States.
(e) For FY2017 and FY2018 amounts include 51.0 and 62.2 million barrels respectively attributable to discontinued operations of Onshore US.

284 BHP Annual Report 2020