China's independent refiners, commonly known as teapots, are expected to resume purchasing larger volumes of Iranian crude oil this month, as inventories in Shandong Province—the hub for these refiners—have fallen to their lowest level this year following what is estimated to be the largest monthly drawdown in a decade. The teapot sector, which became a major force in global crude trade after Beijing granted independent refiners import rights in 2015, accounts for roughly a fifth of China's total refining capacity and is concentrated almost entirely in Shandong, making the province's inventory levels a closely watched barometer for Asian oil demand.

Throughout most of the Middle East conflict, now in its sixth month, China's independent refiners have relied on their reserves and curtailed purchases and imports. This was driven by surging international crude prices and what appears to have been an unofficial Chinese policy to reduce crude imports. China was in a position to slash imports because it was estimated to have accumulated more than 1.3 billion barrels of crude across all commercial and strategic reserves.

However, stockpiles in Shandong are now estimated to have declined to approximately 360 million barrels by the end of July—the lowest in eight months—according to data from Energy Aspects cited by Bloomberg. The July drawdown alone amounted to roughly 35 million barrels, marking the steepest single-month decline since Energy Aspects began compiling such data in 2016.

As a result, China's independent refiners are anticipated to step up imports of Iranian crude starting in August. Iranian crude has historically been attractive to teapot refiners because it is typically offered at a discount to benchmark grades, reflecting the pricing impact of U.S. sanctions on Tehran's exports. This follows a window from mid-June to early July during which millions of barrels of Iranian crude passed through the Strait of Hormuz and were positioned for shipment to Asia, after the United States lifted a blockade that had been aimed at curtailing Iranian exports.

Overall Chinese crude imports rebounded in July from June's decade-low, rising 22% month-over-month to an average of 8.45 million barrels per day (bpd), according to customs data released last week.

China's substantial supply cushion enabled it to play a key role in capping global oil prices despite the ongoing turmoil in the Middle East. As the world's largest crude importer, China was able to temporarily pause purchases. Analysts have cautioned, however, that China's eventual return to international markets would present challenges for oil bears. The pace and scale of Shandong's restocking in the coming months will be a key metric for market participants gauging the trajectory of Chinese crude demand.

By Tsvetana Paraskova for Oilprice.com