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

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

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

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

Product Details:

Place of Origin: Hebei,China
Brand Name: JCDRILL
Certification: ISO,CE
Model Number: 5-17 inch

Payment & Shipping Terms:

Minimum Order Quantity: 1
Price: Negotiable
Packaging Details: Standard Export Packaging
Delivery Time: 5-7 days
Payment Terms: T/T, Western Union, MoneyGram, L/C
Supply Ability: 100000 pcs/year
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Detailed Product Description
Material: Carbon Steel Product Name: Drag Bit
Processing Type: Forging Application: Water Well Drilling
Production Time: 5-7days Diameter: 150-445mm
High Light:

water well drilling parts

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drill bit connector

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.

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

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

No. Bit Diameter Bit Design Type Part No
  inch mm Step / Chevron  
1 2 1/2〞 64 S/C DB212S/DB212C
2 2 3/4〞 70 S/C DB234S/DB234C
3 2 15/16〞 75 S/C DB21516S/DB21516C
4 3〞 76 S/C DB3S/DB3C
5 3 1/8〞 79 S/C DB318S/DB318C
6 3 1/4〞 83 S/C DB314S/DB314C
7 3 1/2〞 89 S/C DB312S/DB312C
8 3 5/8〞 92 S/C DB358S/DB358C
9 3 3/4〞 95 S/C DB334S/DB334C
10 3 7/8〞 98 S/C DB378S/DB378C
11 4〞 102 S/C DB4S/DB4C
12 4 1/8〞 105 S/C DB418S/DB418C
13 4 1/4〞 108 S/C DB414S/DB414C
14 4 1/2〞 114 S/C DB412S/DB412C
15 4 5/8〞 117 S/C DB458S/DB458C
16 4 3/4〞 121 S/C DB434S/DB434C
17 4 7/8〞 124 S/C DB478S/DB478C
18 5〞 127 S/C DB5S/DB5C
19 5 1/8〞 130 S/C DB518S/DB518C
20 5 1/4〞 133 S/C DB514S/DB514C
21 5 1/2〞 140 S/C DB512S/DB512C
22 5 5/8〞 143 S/C DB558S/DB558C
23 5 3/4〞 146 S/C DB534S/DB534C
24 5 7/8〞 149 S/C DB578S/DB578C
25 6〞 152 S/C DB6S/DB6C
26 6 1/8〞 156 S DB618S
27 6 1/4〞 159 S DB614S
28 6 1/2〞 165 S DB612S
29 6 5/8〞 168 S DB658S
30 6 3/4〞 171 S DB634S
31 6 7/8〞 175 S DB678S
32 7〞 178 S DB7S
33 7 1/8〞 181 S DB718S
34 7 1/4〞 184 S DB714S
35 7 1/2〞 191 S DB712S
36 7 5/8〞 194 S DB758S
37 7 3/4〞 197 S DB734S
38 7 7/8〞 200 S DB778S
39 8〞 203 S DB8S
40 8 1/8〞 206 S DB818S
41 8 1/4〞 210 S DB814S
42 8 1/2〞 216 S DB812S
43 8 5/8〞 219 S DB858S
44 8 3/4〞 222 S DB834S
45 8 7/8〞 225 S DB878S
46 9〞 229 S DB9S
47 9 1/8〞 232 S DB918S
48 9 1/4〞 235 S DB914S
49 9 1/2〞 241 S DB912S
50 9 5/8〞 244 S DB958S
51 9 3/4〞 248 S DB934S
52 9 7/8〞 251 S DB978
53 10〞 254 S DB10S
54 12〞 305 S DB12S
55 12 1/4〞 311 S DB1214S
56 15〞 381 S DB15S
57 17 1/2〞 445

S

DB1712S
 

 

Packing& Delivery

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

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 .
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4. After Sales Service
Free replacement will provide once the failure confirmed caused by our product quality.

Contact Details
Beijing Jincheng Mining Technology Co., Ltd.

Contact Person: Sean Zhao

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