Spanish hydraulic rock drill structure design

What are the components of a water-well Rock Drill?

The water-well rock drill comprises many different and diverse components, including steel fabrications such as chassis, fuel tanks, mast, and gearboxes and bought-in components such as diesel engines, compressor, wheels, and bearings. (Plate 7.7)

What type of rock is used for rotary drilling?

Rotary drilling for geothermal deposits, such as natural steam and superheated geothermal waters (i.e., metamorphic and igneous rock, as well as sedimentary rock) is required. However, the deep drilling of boreholes for the recovery of crude oil and natural gas is almost exclusively carried out in sedimentary rock.

How does a rock drill function?

The modern rock drill functions by deriving its action from the traditional method of hand drilling with hammer and chisel. In this process, two men would wield hammers, and a third would hold the chisel and rotate it. The old time miners used this method to drill.

How long does a rock drill last?

The rock drill, which was transported over 5,000 miles to be used in remote villages in the Himalayas, was assumed to have a rig life of five years. The engine powering the rig was 800 hp, and it has been assumed that most of the components can be reused, refurbished, or recycled.

How do you advance a drill bit into rock?

To advance a drill bit into rock, you need to apply an axial force on the bit (to push it into the rock face), torque on the bit (to rotate it against the resistance of the rock face), and circulate fluid to clear the rock cuttings away from the bit as it generates more cuttings with its advance (see Figure 2-2 ).