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Annual Reserve Revisions Part VI: Sub-Saharan OPEC Members
A guest post by George Kaplan
IOC Reserves and Production
About the only place where properly audited estimates for OPEC’s claimed reserves are available is sub-Saharan Africa, principally Nigeria and Angola, but with Congo, Equatorial Guinea and Gabon as minor players. Except for some on-shore legacy production in Nigeria most of the fields are partly owned and wholly operated by western IOCs that are required to provide accurate estimates for reserves and revisions for SEC and other financial reports.
In the 10-k or 20-f reports the estimates are presented geographically with Africa seprated out and, usually, sub-Saharan Africa separated from North Africa, which is typically lumped with the Middle East (in which the IOCs now have little direct ownership in OPEC countries).

Open Thread Non-Petroleum, August 26, 2021
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Open Thread Non-Petroleum, August 20, 2021
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Read MoreOPEC Update, August 2021
The OPEC Monthly Oil Market Report for August 2021 was published this past week. The last month reported in each of the charts that follow is July 2021 and output reported for OPEC nations is crude oil output in thousands of barrels per day (kb/d). In the charts that follow the blue line is monthly output and the red line is the centered twelve month average (CTMA) output.
