Saudi Aramco had initially proposed to ramp up its oil production to 13 million barrels per day following an announcement in 2021.
Tankers bearing Cameroon's flag are often used to carry Russian oil and help dodge Western sanctions - but these vessels often fail safety inspections.
Angola's Resources and Petroleum Minister said OPEC membership no longer served the country's interests.
Over a 100 nations had lobbied hard for strong language in the COP28 agreement to "phase out" oil, gas and coal use, for a deal moving away from fossil fuels.
The UN chief has urged countries to phase out fossil fuels - but oil producers are not happy with this call.
Saudi oil strategy [MediaNews Group/OCR/Getty]
OPEC+ announced production cuts to shore up flagging prices but Saudi Arabia might be quietly planning to flood the market with cheap oil, according to energy experts.
Brazilian President Luiz Inácio Lula da Silva's office confirmed receiving the invite during his trip to Saudi Arabia, but said he had not formally responded.
The cuts are meant to keep the price of oil stable [Getty]
Oil-producing countries in the OPEC+ grouping have announced that they would cut production in order to prop up prices
An ongoing dispute between the Iraqi federal government and KRG over oil has led to political deadlock, with some energy and political experts offering a way out.
Iraq and KRG oil ministers
'We have an initial understanding [with the KRG], God willing we will reach a solution within the coming three days,' Iraq's oil minister said on Sunday.