Nemba

Nemba Oil and Gas Field Profile

The Nemba Oil and Gas Field is located in Block 0, Area B, offshore Angola, approximately 37 miles (62 kilometers) west of the Malongo Terminal.
The field is situated in shallow water with a depth of about 820 feet.
Geologically, the field is characterized by a south-plunging anticlinal horst structure surrounded by faults sealed vertically by fine-grained upper Cretaceous rocks and laterally by Tertiary shale. The Pinda formation in the field consists of a sequence of interbedded carbonate and clastic rocks over 3,500 ft thick in the discovery well. A gas cap, up to 1,100 ft thick in the northern part of the reservoir, overlies a 480-ft-thick oil column.

The field is operated by Cabinda Gulf Oil Company Ltd (CABGOC), a subsidiary of Chevron.
The ownership is shared among several companies: Chevron (39.2%), Sonangol Pesquisa e Produção (41.0%), TotalEnergies (10.0%), and Eni (9.8%).

Early oil production began in 1996 using the Jamestown FPSO (Floating Production, Storage, and Offloading) vessel before the installation of permanent platforms.
The South Nemba platform came on stream in 1998, followed by the North Nemba platform in 2001.
Peak production was achieved in 2002, with approximately 101.57 thousand barrels per day (bpd) of crude oil and condensate.

The field has recovered about 90.32% of its total recoverable reserves as of the last available data. It is expected to continue production until it reaches its economic limit in 2031.
The remaining recoverable reserves are estimated at 57.03 million barrels of crude oil and condensate.
Current production accounts for approximately 2% of Angola’s daily oil output.

The field is developed through two production platforms, South and North Nemba, each including gas compression facilities for gas conservation and secondary recovery through rich gas injection.
The North Nemba drilling program includes 12 wells: nine oil/condensate production wells and three gas injection wells.
Contractors involved in the development include FMC for the Early Production System (EPS) and subsea equipment, and McDermott-ETPM for pipeline installation.

The field produces hydrocarbons, with an annual production of approximately 11.6 million barrels of oil equivalent (boe) as of 2021.
The crude oil from the Nemba field has specific characteristics, such as an API gravity of 38.6, sulfur content of 0.22%, and other detailed compositional data available in the crude oil assay.

The field's production is managed to optimize recovery and extend the field's life. The use of gas injection for secondary recovery is a key strategy.
The economic viability of the field is projected to continue until 2031, based on current production rates and reserve estimates.