API Standard Drilling Tools 8 Inch Drag Drill Bits For Water Well Drilling

API Standard Drilling Tools 8 Inch Drag Drill Bits For Water Well Drilling

Application

The drag bit is the oldest rotary tool still used by the drilling industry. These bits are currently manufactured in several different designs with various cutler blade quantities and shapes. The cutting blades arc integrally made with the bit body or are fixed to it and rotate as a unit with the drillstem. This bit is used primarily in soft and gummy formations. Optimum performance is attained by arranging the hydraulic equipment and selecting nozzle sizes so maximum available hydraulic horsepower is expended at the bit.

Chevron Drag Bit
Drill more abrasive formations, like soft sandstones and shales, with a chevron drag bit.
The cutting structure is more durable than the step drag bit but will also penetrate more slowly.
For best drilling results, maintain rotary table speeds between 50 and 60 rpm with light to medium weight on bit (WOB). Harder formations require more WOB.

Characteristics

All sizes are generally 3 wings and standard design;

Any size of 4 wings or chevron type is upon customer’s request;

All sizes connection type are AROD,NROD or standard API thread;

Any special size and design is upon customer’s request.

Drag bits diameter:76mm to 445mm;
Step Drag Drill Bits thread sizes: :2 3/8” API Reg, 3 1/2” API Reg, 4 1/2” API Reg, 6 5/8” API Reg, etc;

Specification

Packing& Delivery

FAQ
1. Shipping time for an order
We have many stock. As usual, we can delivery the goods as soon as we get the full payment.
2. Quality Control
Strict inspection and testing for every order before shipping out .
3. How can we trust your company?
We support Alibaba trade insurance. Protect products quality, shipment on time and your covered amount.
4. After Sales Service
Free replacement will provide once the failure confirmed caused by our product quality.

Beijing Jincheng Mining Technology Co.,Ltd(JCDRILL) located in Beijing,China, for more than 20 years we have specilized in research, development and produce of rock blasting drilling rig, water well drilling rig, diamond core drilling rig, anchor drilling rig, and relative accessories & drilling services. constantly provide professional drilling solutions for all customers with our advanced technology, excellent equipment, strict testing means and perfect service network, which establish our brand “JCdrill” a good image of market, now, JC products account for 50% of domestic market and have been export to more than 40 countries, and we awarded ISO9001: 2000 in November, 2002.

Now, our factories for rock blasting drilling rig, water well drilling rig, diamond core drilling rig, anchor drilling rig, and relative accessories occupy an area of 9625 square meters with more than 500 employees, including twenty six engineers from Ingersoll Rand and former Xuanhua Mining Machinery company, with excellent technology and solid market service capabilities, we have both a sound marketing system and excellent service support system, which help us win confidence of customers both at home and abroad. Meanwhile, we are agent of movable double screw air compressor of Atlas Copco,Sullair, Liutech,by which ,we can provide drilling rig users with high quality professional air compressor solution and relative after-sales service also.

JCdrill will always focus on the strategic conception of “Survival by quality, Development by credit’’, to provide users with high quality drilling solutions.In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.

We provide "one equipment & one case, endless service, namely the after sales service begin from the order confirmation, last for the working life of the equipment.