Mec115 Eccentric Overburden Casing Drilling System with Pilot Bit for Undergroun Drill

• Certification: ISO 9001:2000, SGS
• Standard: GB
• Surface Treatment: Spray-Paint
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: MK-MEC115
• Manufacturing Process: Forging
• Material: Carbon Steel
• Model: Mk-Mec115
• Hole Dia.: 155mm
• Weight: 30kg
• Length: 510mm
• Spline: DHD340, SD4, Ql4
• Transport Package: Wooden Case
• Trademark: MING
• Origin: China
• HS Code: 8207199000
• Production Capacity: 20000PCS/Year
• Package Size: 52.00cm * 17.00cm * 17.00cm
• Package Gross Weight: 33.000kg

Product Description

MEC115 Eccentric Overburden Casing Drilling System with Pilot Bit for Undergroun Drill

Product Description

Down the hole (DTH) tools manufacturer KINGDRILLING Head Eccentric Casing drilling system is made up of a pair of chain embedded to guide apparatus, and ensure the bit is not contacting and damaging the retaining ring when it is rotating. When rotated clockwise, eccentric part will be expanded to bring the casing tube into hole. After completing, eccentric bit will be closed while rotated anticlockwise, and it can be lifted up by the drilling machine. This type is especially suitable for 114-273mm in diameter.

Features of Overburden Casing Drilling System:

1. Casing Advancement Mechanism

The overburden casing drilling system is equipped with a specialized casing advancement mechanism that allows casing to be installed simultaneously with drilling. This mechanism typically includes casing shoes, casing bits, and casing advancement tools designed to facilitate the smooth advancement of casing through various geological formations.

2. Dual-Wall Drill String

A key feature of the overburden casing drilling system is the dual-wall drill string, which consists of an inner drill string for drilling and an outer casing string for casing installation. This dual-wall design enables operators to drill and case simultaneously, eliminating the need for separate casing installation operations and improving overall efficiency.

3. Reverse Circulation Drilling

Many overburden casing drilling systems utilize reverse circulation drilling techniques to enhance drilling performance in challenging formations. Reverse circulation drilling involves pumping drilling fluids down the annulus between the inner drill string and the outer casing string, allowing cuttings to be transported to the surface efficiently.

4. Casing Extraction Tools

To facilitate casing extraction after drilling is complete, overburden casing drilling systems are equipped with specialized casing extraction tools. These tools allow operators to retrieve the casing from the borehole efficiently, enabling the reuse of casing materials and minimizing waste.

5. Hydraulic System

The hydraulic system of the overburden casing drilling system plays a crucial role in controlling drilling parameters such as rotation speed, torque, and pressure. This system ensures smooth operation of the drilling equipment and allows operators to adjust drilling parameters according to changing geological conditions.

 

Technical Date

Model	Hole dia(mm)	Weight (KG)	Closed dia.(mm)	Pilot dia.(mm)	Length(mm)	Case dia.(OD*ID)	Spline
MK-MEC90	125	16	90	100	360	114*102	MACH33,DHD3.5
MK-MEC115	155	30	115	125	510	139*127	DHD340,SD4.QL4
MK-MEC140	188	52	140	151	570	168*153	DHD350,SD5,QL5
MK-MEC165	215	95	166	178	690	194*181	DHD360,SD6,QL6
MK-MEC190	238	108	190	203	690	219*206	DHD360,SD6,QL6
MK-MEC215	276	140	215	236	720	254*240	DHD380,SD8,QL8
MK-MEC235	293	160	236	251	730	273*254	DHD380,SD8,QL8
MK-MEC240	293	168	241	256	730	273*260	DHD380,SD8,QL8

How to choose the suitable head face of the DTH drill bit?

1.  Concave:

Suitable for all kinds of formation, especially for deep well drilling, perpendicularity of the hole is wonderful.

1.  Convex: 

Suitable for the formation of moderate hardness stratum, drilling efficiency is good, borehole perpendicularity is moderate.

1.  Flat:        

Suitable for special hard formation stratum, especially for fracture, crack spacing and complex formation drilling effect is very good, has the good perpendicularity of the borehole.

Product Application

 

It is widely used in earth and stone engineering mining Wells drilling construction projects drilling Wells edge pillar support.

 

Company Profile

 

 

Wuhan Kingdrilling Diamond CO., LTD, one of the most professional private manufacturer specialized in researching and producing Overburden casing drilling system, DTH hammer, DTH drill bits, Core bits, Thread bits, Taper bits, Shank adapter, Drilling rods, Coal mining picks and related rock drilling tools.

Relying on the university resources and talent advantages in High-tech region, combining with multiple laboratories in universities, we have more power focused on developing the newest products system.

Our DTH drilling tools are produced with advanced technology from Britain. The company is equipped with advanced production facilities including electron-hydraulic forging hammer, multipurpose furnace heat treatment production line, high performance CNC machines, from raw materials prepared, forging, heat treatment, mechanical processing, a completed manufacturing system is finished in the factory. Strict quality control standards make sure stable quality. 

Whatever in construction, engineering, piling, water well drilling, tunneling, mining, quarrying or horizontal drilling industry, KINGDRILLING will do the best to satisfy your demands. "Kingdrilling, Keep On Striving", we'll always be in this line to serve our customers the most reliable products and the best support.

 

 

Our Advantages

1. High quality: We are the partners with a lot of big factories in China. We can provide the best quality products to you. 
2. Competitive price: Competitive price because of direct factory price. 
3. Fast delivery time: It usually takes 20 days for production.only 3 or 5 days if we have stock of your request size.
4. Best quality control: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.
5. Problems solve ability: This ability comes from rich experiences of drill bits industry and reliable sales..
6. OEM,ODM service: Your own request about product will be served well.
7. Best after service: We will go to your place to check and solve the problems if you need.

After Sales Service

1.Pre-sale service:

Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments .
1.Select equipment model;
2.Design and manufacture products according to client's special requirement ;
3.Train technical personnel for clients .

2.Services during the sale:

1.Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .

3.After-sale services:

Provide considerate services to minimize clients' worries.
1.Complete After-sales service,professional engineers available to service machinery at home or oversea.
2. 24 hours technical support by e-mail.
3.Other essential technological service.

Packaging & Shipping

Packed by Carton or Wooden cases.
Delivery:

1. Goods in stock can be delivered within 5 days.
2. DTH Bits production time is about 15 days.
3. DTH Hammer product time is about 30 days.

Transprotation: By air, By Express or By sea / By train , according to your requests.

FAQ

1. How to order the products?

A: Please send the inquiry with detail item description or with Model number.

2. Can I expect a quality products?

A: Yes. mature production technology ensuring the quality satisfy international request.

3. How to check the product are the exact one you want?

A: If possible, please attach one reference picture to avoid any misunderstanding or any links from ourwebsite for a better understanding.

4. How to make sure the quality?

A: More than 40 Years engineer to make sure the quality, 100% inspection.

5. What is the general delivery time?

A: 15 working days for DTH bits.

20-25 working days for DTH hammer

3-5 working days for ex stock items.

6. Methods of Payment

A: T/T (Telegraphic Transfer) or Western Union.
 

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