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Testing Report for HAU Drill Rods From APR Wuxi (Au-Prospecting Drilling Wuxi Co., Ltd.)
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The trial using of APR Wuxi’ HAU drill rods details are listed as per below:
Testing Date: During Oct. 13 to Nov. 2, 2020
Job site: Dachadan Kuangou Coal Mine, Hole No.: ZK3-1
Drilling Rig: Epiroc Boyles C6 ( Max Torque: 4000 PSI)
Bit Size: HQ3 Impregnated Diamond Bit
Description of Testing:
We, HFDC started to use HAU drill rods supplied by APR Wuxi from the date of Oct. 13, 2020, the drilling work is smooth, 35m feeding depth as per day, the torque of drilling rig is between 1800 to 2200 PSI, the performance of the drill rod is excellent, no leaking, no thread broken, midbody twisted or such bad situation happened. Among the drilling, there was a large area collapse when the drilling depth reached 486.3m. So we have to swipe the hole, the loading in the hole is increased much, the swiping torque is as big as 3500-4000 PSI, even the situation is bad enough, HAU drill rod performs very good, no leaking, no thread broken, no abnormal bending, just looks great. The swiping work took approximate 27 minutes, finally we use hydraulic jacks to try to lift the rods out of the hole, during this job, the maximum pressure is 25 Mpa ( Exceeds the capacity of the pressure gauge), under such horrible pressure, the HAU rods still perform good, no leaking, no thread broken, no abnormal bending.
Conclusion:
The performance of the HAU drill rod from APR Wuxi is excellent, even if the drilling condition is such dad during drilling, however it can keep the good performance without any leaking and thread broken.
Manager: Zhaoyong
Nov. 2, 2020
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