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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 59 (1975)

Issue: 10. (October)

First Page: 1904

Last Page: 1949

Title: Petroleum Developments in Central and Southern Africa in 1974

Author(s): Philippe Biro (2)


This review covers the petroleum exploration and production activities in 45 countries or provinces of Africa, excluding Morocco, Algeria, Tunisia, Libya, Egypt, and Sudan.

Surface exploration work increased 23% to 485.8 party-months of which seismograph was 299.4, surface geology 73.8, gravimeter 63.8, photogeology 22.5, magnetometer 21.5, and structural drilling 2.8.

Exploratory drilling increased from 112 to 120 wildcats with 29% success, slightly less than in 1973. New-field discoveries were reported in Angola, Cameroon, Congo, Gabon, Ghana, Ivory Coast, and Nigeria. A total of 22 unsuccessful wildcats was drilled in 7 other countries.

Development drilling amounted to 277 wells in Angola, Congo, Gabon, and Nigeria, with an 89% success ratio. Total wildcat and development footage was 3,537,519 (1,078,236 m). Average well depth was 8,910 ft (2,716 m) compared to 8,763 ft (2,670 m) in 1973. At year-end 51 rigs were operating.

Total annual oil production increased 11.4% from 878.3 to 951.8 million bbl, with an average rate of 2.6 million BOPD. Production increases were recorded in Angola 7.6%, Congo 19.8, Gabon 1.1, and Nigeria 8.7. Total annual gas production was up 4.7% to 799,669 MMcf (2,191 MMCFD).

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