When retrieving the core, the fishing tool is lowered into the drill pipe and rapidly descends under gravity. Upon reaching the position of the inner ...

Hole Depth: 1300m, 1000m,600m,300m Hole Diameter: 60mm, 76mm, 96mm, 123mm Coring Method: Wireline Diamond Coring

Hole Depth: 1800m, 1500m,700m,400m Hole Diameter: 60mm, 76mm, 96mm, 123mm Coring Method: Wireline Diamond Coring

Hole Depth: 400m, 300m,100m,50m Hole Diameter: 60mm, 76mm, 96mm, 123mm Coring Method: Wireline Diamond Coring

- Using imported diamond raw materials and reinforced rib structure, with the same formation, the drilling depth is 20-50% higher than that of general...