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Project Description:

The method used by Brand Drill Torrex to make vertical shafts is to drill a pattern of 4 ½” holes and then blast in several steps.  To drill the 4 ½” holes, pneumatic hammers have been used up to now. However, with air it takes approximately three weeks to finish a shaft of 30 meters. With Wassara W100 Drilling System the same job is completed in one week. Furthermore, the requirement that the hole deviation must not exceed 1% is easily achieved with the Wassara system.


Result:

By using the Wassara System the completion time is reduced by a factor of three which results in considerable cost savings for the customer.
 

Equipment:

Hammer

Wassara W100

 

Bit

Wassara 115 mm

 

Pump

Crown Chrome 290 Lpm

 

Drilling fluid

Clean water

 

Drill pipe

Wassara 1500 mm, diameter 102 mm

 

Rig

Own design

 

Formation

Quartzite

 

Other

Wassara Swivel Stenberg 600