The final tankers carrying sanctioned Venezuelan crude to Asia are due in the coming days, marking the end of China's easy access to this discounted supply. This closes a chapter for Chinese refiners who relied on the barrels to maintain margins and keep operations running smoothly.

For years, Beijing's independent refiners, known as teapots, sourced Venezuelan oil through intermediaries despite U.S. sanctions. This flow helped offset rising costs from Middle Eastern and Russian purchases. With the supply now drying up, Chinese processors face higher input costs, squeezing profitability in an already competitive market.

The shift underscores the tightening grip of Western sanctions on global oil flows. Chinese buyers must now seek alternatives, potentially boosting demand for other heavy crudes. Watch for how refiners adapt their feedstock mix and whether state-owned giants secure new long-term deals to offset the loss.