Concentric Overburden Drill Bit with Blocks for Water Well Projcet

• Customization: Available
• Customized: Customized
• Standard: ISO9001
• Length: Stub-length
• Type: Drill Bits
• Material: Tungsten Carbide
• Usage: Water Well, Geothermal Drilling
• MOQ: 1 PCS
• Application: Water Well, Geothermal Well etc
• Transport Package: Wooden Package
• Specification: steel
• Trademark: BESTLINK
• Origin: China
• HS Code: 82071990
• Production Capacity: 50000 PCS / Month
• Package Size: 67.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 45.000kg

Product Description

Concentric overburden drill bit with blocks for water well projcet

Application Range
It is recommended to drill in rock formation where contains some ovals and fractures.
 
Design Principles
Make the casing follow easy and the equipment and operation simple 
 
Outstanding Advantages
1.The stable and reliable working performance and the less vibration of drill rig.
2.Flexible to open and close.
 


Operation Procedure
1.when the drilling starts, the blocks slides down through the grooves on pilot bit,and reams to drive the casing shoes and tubes into the hole.
2.When finished the drilling in overburden rock formations, raise the drilling tools and the blocks will get closed through the grooves , and the drilling tools can be pulled out from the hole.
3. Next construction can be followed.
 
Material:
Steel: first class special alloy steel with high strength, heat resistance and wearable
Carbide: The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.
 

Model	Outer Dia. of Casing Tube(mm)	Inner Dia. of Casing Tube(mm)	Wall thickness of casing(mm)	Reamed Dia.(mm)	Min. Inner Dia.of Casing Shoe(mm)	Hammer Type(mm)	Drill Pipes(mm)
140	168	148	10	180	138	COP44/DHD340/MACH44/MISSION40/   SD4/XL4/QL40	76/89
146	178	158	10	192	148	COP54/DHD350/MACH50/MISSION50/   SD5/QL50	76/89
165	194	173	10.5	205	161.5	COP62/COP64/DHD360/MISSION60/SD6/XL6/QL60/TD150	89/114
190	219	197	11	238	187		89/114
240	273	253	10	305	241	COP84/DHD380/SD8/QL80	114/127
280	325	305	10	350	282	DHD112/QL120/SD12/NUMA120/TH12	114/127
365	406	382	12	425	365		127/168
410	457	433	12	480	409		168
460	508	483	12.5	530	459		168
500	560	535	12.5	620	501		168

 
Package for casing system: