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Concentric overburden drill bit with blocks for water well projcet

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Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.

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Concentric overburden drill bit with blocks for water well projcet

Name: Concentric overburden drill bit with blocks for water well projcet
Brand: Teamwhole
Price: 1 USD

Quality Concentric overburden drill bit with blocks for water well projcet for sale

Brand Name : Teamwhole

Model Number : Concentric casing system

Certification : ISO9001:2008

Place of Origin : Hunan, China (Mainland)

MOQ : 1 Set/Sets Concentric overburden drill bit

Price : Negotiation

Payment Terms : L/C, T/T

Supply Ability : 5000 Set/Sets per Month Concentric overburden drill bit

Delivery Time : Shipped in 25 days after payment

Packaging Details : Concentric overburden drill bit are packed Inner package with cartons,outer package with wooden cases.

Model Numbe : Symmetric overburden casing system 90-219

Type : Concentric casing system

Material : carbides

Use : Well Drilling

Rock drilling to : Concentric overburden casing system

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Concentric overburden drill bit with blocks

Specification

1.Face: Flat,Convex,Concave,Drop-center.
2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step
3.Bit Shank: COP/DHD/QL/SD/MACH/BR

A	B	C	D	E	F
Outer Dia. of Casing Tube	Inner Dia. of Casing Tube	Reamed Dia.	Min. Inner Dia. of Casing Shoe	Hammer Type	Drill Pipes
mm	mm	mm	mm		mm
168	149-155	184	140	TH122	76,89
178	159-165	194	150	TH122	76,89
193	173-180	206	164	TH139	89,114
219	199-206	234	182	TH139,TH180	89,114
244	224-231	260	210	TH180,TH220	114
273	251-257	305	240	TH180	114,127
323	301-310	348	284	TH180,TH220	127
406	382-388	440	364	TH220,TH275	127,140
457	433-439	488	413	TH275	127,140
508	484-490	538	464	TH275	140
558	534-540	590	514	TH275,TH398	140
610	586-592	642	566	TH275,TH398	140,168
660	636-642	694	615	TH398	168
711	687-693	745	665	TH398	168
762	738-744	798	716	TH600	168
863	839-845	900	815	TH600	168

Concentric overburden drill bit with blocks for water well projcet

General Introduction

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.

Raw 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.

Product Pictures

Concentric overburden drill bit with blocks for water well projcet

Product Tags:

symmetrix drilling system

well drilling tools

Concentric overburden drill bit with blocks for water well projcet Images

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