Hot Sale Drilling Tools in Chile market

What we know about hot sale drilling tools in Chile
Concentric drilling tools
DTH Hammer: DHD3.5 DHD340 DHD350 DHD360
DTH BIT: 5'' 6'' 8''
DRILL ROD: 76X3M 89X3M

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Below we mainly introduce concentric drilling tools
In some loose and unstable rock formations, problems such as hole collapse and burial often occur during drilling. How to avoid this series of problems? After several years of on-site practice and research, D Mininwell Drilling Tools has found that concentric drilling tools have the widest applicability to formations. In addition to dealing with eccentricity and the formation conditions targeted by sliders, they can also deal with large blocks. For dry rocks, karst caves, etc., the depth of the pipe can reach about 100 meters, and the drilling efficiency of the pipe is fast, and it can also be used in the field of foundation piles.

1. Structure of concentric casing system


Casing shoe: Used to connect the casing tube.
Ring bit: Used to connect the pilot bit and casing shoe.
Pilot bit: The major structure of concentric casing system,with buttons and flushing grooves, etc.

2. Operation procedure

1. Concentric system drilling through overburden
2. Reverse rotation of the hammer and pull out the pilot bit.
3. Replace the pilot bit to normal bit to continue drilling

3. How to connect concentric drill bit, down-the-hole hammer and casing shoe

NO	Items	Description
1	Casing  tube	a. Threaded casing tube,left tuming thread
		b.Weldied casing tube
2	Drill  rod	ThreadAPI[REG/IF/NC
3	Stabilizer	Thread of stabizer is in keeping with drillng pipe
4	Hammer	Thread modelAPI REG
5	Concentric   Overburden Drilling   System	See the fallowed form for the specs

4. Scope of application:
Applicable to overburden with complex dry geological conditions, such as pebbles, cracks, dry rocks, boulders, construction backfill waste, etc. Drilling holes at any angle with high straightness
The maximum hole depth can reach 150 meters

5. Structural advantages:
Straightness: Under different geological structures, the straightness of hole formation can be guaranteed
Adaptability: In complex geological structures, such as pebbles and construction waste, the drilling efficiency can be guaranteed.
Less Torque: Less torque compared to eccentric drilling system.
Easy to Unlock and Relock: Easy to relock after unlocking.
Drilling at any angle: the concentric tubular drilling tool can drill in vertical, horizontal and inclined states.
Environmental protection: Compared with eccentric drilling tools, it is more suitable for construction in urban areas because of its stable drilling, low vibration and low noise.
 

Technical Parameters of Concentric drilling tools
Size	OD of casing pipe(mm)	ID of casing pipe(mm)	Wall thickness	Center drill	Perforated	Allow pass	Matching DTH Hammer	Weight (KG)
			(mm)	bit most	size	drill bit diameter
				Large outer diameter	(mm)	(mm)
				(mm)
P114/9-84	114	94	10	94	126	84	COP34/DHD3.5/MW3.5	10
P127/10-93	127	107	10	105	142	93	COP34/DHD3.5/MW3.5	16
P140/10-97	140	120	10	116	161	97	COP44/DHD340（MW4）/SD4/QL40	21
P146/10-110	146	126	10	124	165	110	COP44/DHD340/(MW4)/SD4/QL40	22
P168/12.7-127	168	142.6	12.7	141	188	127	COP54/DHD350（MW5）/SD5/QL50/M50	27
P178/12.7-131	178	152.6	12.7	150	196	131	COP54/DHD350（MW5）/SD5/QL50/M50	32.5
P194/12.7-145	194	168.6	12.7	166	214	145	COP64/DHD360(MW6)/SD6/QL60/M60	42.5
P219/12.7-170	219	193.6	12.7	191	243	170	COP64/DHD360{MW6)/SD6/QL60/M60	58
P245/12.7-195	245	219.6	12.7	214	268	195	COP84/DHD380/(MW8)/SD8/QL80	78
P254/12.7-203	254	228.6	12.7	224	276	203	COP⁸4/DHD380(MW8）/SD8/QL80	84.5
P273/12.7-223	273	247.6	12.7	241	298(305)	223	COP84/DHD380(MW8)/SD8/QL80	100
P325/12.7-276	325	299.6	12.7	292	350	276	COP84/DHD380(MW8）/SD8/QL8O	135
P406/12.7-350	406	380.6	12.7	377	442	350	DHD112(MW12)/QL120/SD12/NUMA120	280
P508/12.7-416	508	482.6	12.7	478	545	416	QL200/SD18/NUMA180/MW18	522
P560/12.7-475	560	534.6	12.7	528	595	475	QL200/SD18/NUMA180/MW18	620
P610/12.7-513	610	584.6	12.7	558	645	513	QL200/SD18/NUMA180/MW18	710

Factory Photo