How Deep Can a Core Drill Go?
WOGONG Writes Its Answer Into the Rock
Look at the industry standard and you will not find a single number — you will find a table. Chinese-made geological core drills start at 100-meter-class machines and climb through 2,200 and 3,500 meters, with electric top-drive models reaching 5,000 meters. The YDX series of full-hydraulic rigs fielded by the China Geological Survey ranges from 400 to 2,200 meters at N-size. Depth was never a single spec on a datasheet. It is the combined result of the mast, the pumps, the rods, the mud and the core recovery technique — one weak link and a two-kilometer hole is lost.
WOGONG (Shandong Wogong Technology Co., Ltd.) learned about depth the hard way, in its workshops in Mengyin. The export-focused company, a subsidiary of Mengyin Feida Mining Engineering Machinery Co., Ltd., builds three product lines — FY-series crawler rigs, DTH drills and water well rigs — moves tens of millions of dollars in annual import and export trade, and has a name in East China’s water well drilling export circle. The FY280 crawler rig is rated to 280 meters. The 400-meter full-hydraulic crawler rotary rig introduced in 2025 is already shipping out of port in batches. With a 6.6-meter mast and a 140–325 mm hole-opening range, one machine handles both a 300-meter dual-purpose water-and-air well and DTH blastholes in hard rock — work that used to take a whole crew.
“We don’t sell lumps of steel. We sell the water our customers can pump and the ore they can pull out,” says the head of WOGONG’s foreign trade team, who keeps more after-sales engineers on the payroll than salespeople. Free spare parts shipments, on-site training, late-night calls for remote guidance — the service follows the customer’s time zone. That is how the yellow-and-black WOGONG paint keeps showing up in more village well crews in dry Africa, more mine sites in Central Asia, more drill teams in South America. Orders roll in on word of mouth; word of mouth is built on those trans-oceanic phone calls at 2 a.m.
The competition underground is getting deeper, too. The China Geological Survey commissioned 34 core drilling rigs in 2025, and the national Deep Earth science and technology major project has put a 15,000-meter ultra-deep rig on its development list. As the 15th Five-Year Plan’s prospecting effort opens, the 3,000-meter hole at Chating is about to spud. There are no shortcuts underground. Every upgrade of the equipment reaches a little further for the people hunting minerals.
WOGONG’s answer is simple: how deep a drill can go depends on how far you want to take the water — and how deep you want to chase the ore. And its rigs are going deeper, with the rest of China-made equipment, toward the bottom of the earth.
