In April, Venezuela's crude oil production averaged 830,000 barrels per day (b/d), down from 1.2 million b/d at the beginning of the year," the report said.
"This average is the lowest level since January 2003, when a nationwide strike and civil unrest largely brought the operations of Venezuela's state oil company, Petroleos de Venezuela, S.A. (PdVSA), to a halt."
Widespread power outages, mismanagement of the country's oil industry and US sanctions directed at Venezuela's energy sector and PDVSA have all contributed to the recent declines, the report said.
The deadlines include provisions that third-party entities using the US financial system halt transactions with PDVSA by 28 April and that US companies, including oil service companies and companies involved in the oil sector must cease operations in Venezuela by 27 July, the report said.
The situation in Venezuela has been tense since January when US-backed opposition leader Guaido illegally declared himself the country's interim president after disputing Maduro's re-election.
The United States and 54 countries have recognized Guaido. However, Russia, China, Cuba, Bolivia, Turkey and a number of other countries have said they recognize Maduro as the only legitimate president of Venezuela.