China Taps Crude Stockpiles as Refinery Recovery Collides With Weak Oil Demand

China’s National Bureau of Statistics reported that refiners processed 59.07 million tonnes of crude in August, about 13.91 million barrels per day. That was an 11.2% increase from July, although throughput remained 6.9% below the level recorded a year earlier. Domestic crude production was relatively stable at 18.43 million tonnes, or roughly 4.34 million barrels per day, while customs data showed imports rising to around 37.9 million tonnes, equivalent to approximately 8.93 million barrels per day. Imports improved for a second consecutive month but remained sharply below year-earlier levels. The arithmetic therefore points to a substantial inventory draw: refinery demand exceeded the combination of imported and domestically produced crude by around 640,000 barrels per day.

This matters because China has become one of the most important shock absorbers in the global oil market. The country accumulated significant inventories when crude was more readily available and prices were more attractive, giving refiners and policymakers room to reduce exposure to expensive imported barrels during periods of geopolitical disruption. Reuters estimates that China has around 1.23 billion barrels of crude in onshore storage. Although inventory withdrawals were recorded in several recent months, China still accumulated a net crude surplus over the first eight months of the year because earlier stockbuilding was substantial. This means Beijing has considerable flexibility to temporarily substitute stored oil for imports, potentially moderating China’s immediate demand in the international spot market.

The strategy has become increasingly relevant because Middle Eastern disruptions have altered global crude flows and pushed energy prices higher. China, normally the world’s largest crude buyer, sharply reduced seaborne purchases following disruptions associated with the Iran conflict and constrained flows through the Strait of Hormuz. August imports recovered from July, but remained around 23% below the previous year according to customs data. Russian barrels have helped replace some disrupted Middle Eastern supply, but alternative crude is not unlimited and competition from other Asian buyers remains strong. If geopolitical risks continue to support crude prices above levels Chinese refiners consider attractive, inventory withdrawals offer a way to keep plants operating without immediately returning to pre-crisis import volumes.

An important feature of the August recovery is that refinery activity is increasingly being supported by exports rather than by a straightforward rebound in domestic fuel consumption. China relaxed restrictions on refined-product exports from mid-year, allowing refiners to take advantage of favourable regional margins. Refined fuel exports consequently rebounded toward roughly one million barrels per day in August, with market expectations pointing to further strength in September. For large state-owned refiners, exporting gasoline, diesel and jet fuel into tight international markets can make additional crude processing economically attractive even when Chinese consumer demand remains subdued. That explains why stronger refinery runs should not automatically be interpreted as evidence that transportation or industrial fuel demand inside China has fully recovered.

Indeed, the longer-term domestic demand picture is becoming increasingly important for investors. Sinopec research recently projected Chinese oil consumption to decline by roughly 3.9% in 2026, with gasoline demand falling about 8.7% and diesel consumption dropping more than 11%. Electric-vehicle adoption is steadily eroding gasoline growth, while slower construction, property activity and changes in freight efficiency are weighing on diesel. China may therefore be moving into a new oil-market phase in which refinery capacity, strategic inventories, petrochemical demand and product exports matter as much as domestic transport consumption. In the near term, its large stockpiles provide a buffer against geopolitical shocks. Over the longer term, however, falling structural demand means China’s role in the global oil market may increasingly shift from being an automatically rising crude importer to a more flexible trader—buying aggressively when prices are favourable, storing surplus barrels and releasing inventories or exporting refined products when market conditions make doing so more profitable.