Occidental Petroleum 2012 Annual Report Download - page 77
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NGL Reserves
United
Latin
Middle East/
States
America
North Africa (a) Total
221
—
68 289
Revisions of previous estimates
8
—
(2) 6
Improved recovery
16
—
— 16
Extensions and discoveries
—
—
— —
Purchases of proved reserves
11
—
— 11
Sales of proved reserves
—
—
— —
Production
(19)
—
(5)
(24)
237
—
61
298
Revisions of previous estimates
—
—
(2)
(2)
Improved recovery
10
—
—
10
Extensions and discoveries
1
—
—
1
Purchases of proved reserves
2
—
—
2
Sales of proved reserves
—
—
—
—
Production
(25)
—
(4)
(29)
Revisions of previous estimates
Improved recovery
Extensions and discoveries
Purchases of proved reserves
Sales of proved reserves
Production
December 31, 2009
155
—
68
223
December 31, 2010
163
—
61
224
December 31, 2011
165
—
55 220
December 31, 2009
66
—
— 66
December 31, 2010
74
—
— 74
December 31, 2011
60
—
— 60
(a) A substantial portion of proved reserve amounts relate to PSCs and other similar economic arrangements.
(b) Approximately 5 percent of the proved developed reserves at December 31, 2012 are nonproducing, the majority of which are located in the United States.
(c) The amount of Occidental's proved undeveloped reserves that are not expected to be developed within five years from the date initially recorded was insignificant.