"The clear and present danger to watch is Venezuela , which arguably has progressed past the risk stage given that production is in freefall," she added.

"We continue to contend that, given 2018's tightening oil market, any potential geopolitically driven supply disruption would have an outsized impact versus recent years when the market was awash in crude," Helima Croft , head of global commodity strategy at RBC Capital Markets, said in a research note Wednesday.

One of Latin America's biggest oil producers could soon provide a key catalyst for oil prices.

While Venezuela boasts the world's largest proven oil reserves, crude production has been steadily declining as it slogs through an economic crisis precipitated by years of government mismanagement and exacerbated by a prolonged oil price slump.

Following years of sharp output losses, the oil-dependent state has slipped to near three-decade lows — with the exception of the 2002-2003 strike. In December, Caracas managed to pump 1.7 million barrels a day, according to S&P Global Platts.

Analysts expect the production losses to continue to deteriorate throughout 2018, with RBC Capital Markets projecting a fall of at least 700,000 to 800,000 barrels per day this year.

"Against this bleak backdrop, the recently scheduled April elections could prove to be the catalyst for more civil strife and economic sanctions that would further erode output," Croft said.

Last month, Venezuelan President Nicolas Maduro — labeled a "dictator" by the U.S. — said he was ready to seek another term in office. The new presidential elections are due to be held before April 30.

The move was branded by observers as an attempt by the ruling socialist party to exploit an opposition in disarray and strengthen its position in government before the economic crisis becomes even more acute.

The oil-dependent state is struggling to cope with hyperinflation — estimated by Venezuela's opposition party to hit 1,400 percent in 2018. This has put the South American nation's entire economy, including its nationalized oil industry that accounts for most of the country's export revenues, in jeopardy.