Angola’s beleaguered state oil company Sonangol is working on strategies to encourage much-needed upstream investment in order to head off what could be a rapid production decline in the coming years.

Among the ideas being investigated are ways to encourage the development of gas resources and alternatives to production sharing agreements.

Sonangol said in its just published 2016 annual report: “Although expected production is relatively stable at an average of 622 million barrels annually (equivalent to about 1.72