Oil-Field Drilling Spiral Drill Collar
Oil-Field Drilling Spiral Drill Collar
Z01 Series Z02 Series

Summary
- Drill collar is the basic component in the BHA which provides weight on the bit for drilling and keeps the drillsting in tension.
- Drill collar has been approved by the NS-1 certification, it is manufactured from 4145H modified quenched and tempered steel, strict metallurgical specifications are followed to insure that full length heat treating produces a consistent maximum depth of hardness.
Features and Benefits
- A hardness range of 285 to 341 BHN and a charpy impact value of 40 ft-lbs are guaranteed at evently distributed 16 points in any sections at room temperature;
- Connections are completed (phosphate coated) to protect them from the elements after machining and to help prevent galling upon initial make-up;
- Thread roots are cold rolled on API and H-90 connections;
- Pressed steel thread protectors are supplied for all drill collar that are equipped with standard connections.
When Ordering Please Specify:
- Drill collar O.D. and I.D.
- Overall length;
- Connections required (size and type);
- Special features desired, for example: Slick or Spiral; Stress Relief Features; Slip and/or Elevator Recess; Hardbanding.
Specifications -- Drill Collar
|
Number and Connection Table |
Product Code |
Outside Diameter |
Inside Diameter |
Length |
Bevel Diameter |
Bending Strength Ratio |
||
mm |
in |
mm |
in |
mm |
mm |
|||
NC23-31 |
Z01/Z02-01000 |
79.4 |
3 1/8 |
31.8 |
1 1/4 |
9150 |
76.2 |
2.57:1 |
NC26-35(2 3/8 IF) |
Z01/Z02-02000 |
88.9 |
3 1/2 |
38.1 |
1 1/2 |
9150 |
84.5 |
2.42:1 |
NC31-41(2 7/8 IF) |
Z01/Z02-04000 |
104.8 |
4 1/8 |
50.8 |
2 |
9150 |
101.6 |
2.43:1 |
NC35-47 |
Z01/Z02-06000 |
120.6 |
4 3/4 |
50.8 |
2 |
9150 |
114.7 |
2.58:1 |
NC38-50(31/2IF) |
Z01/Z02-07000 |
127 |
5 |
57.2 |
2 1/4 |
9150 |
121 |
2.38:1 |
NC44-60 |
Z01/Z02-23000 |
152.4 |
6 |
57.2 |
2 1/4 |
9150 or 9450 |
144.5 |
2.49:1 |
NC44-60 |
Z01/Z02-23100 |
152.4 |
6 |
71.4 |
2 13/16 |
9150 or 9450 |
144.5 |
2.84:1 |
NC44-62 |
Z01/Z02-08000 |
158.8 |
6 1/4 |
57.2 |
2 1/4 |
9150 or 9450 |
149.2 |
2.91:1 |
NC46-62(4IF) |
Z01/Z02-08100 |
158.8 |
6 1/4 |
71.4 |
2 13/16 |
9150 or 9450 |
150 |
2.63:1 |
NC46-65(4IF) |
Z01/Z02-09000 |
165.1 |
6 1/2 |
57.2 |
2 1/4 |
9150 or 9450 |
154.8 |
2.76:1 |
NC46-65(4IF) |
Z01/Z02-09100 |
165.1 |
6 1/2 |
71.4 |
2 13/16 |
9150 or 9450 |
154.8 |
3.05:1 |
NC46-67(4IF) |
Z01/Z02-11000 |
171.4 |
6 3/4 |
57.2 |
2 1/4 |
9150 or 9450 |
159.5 |
3.18:1 |
NC50-67(41/2IF) |
Z01/Z02-11100 |
171.4 |
6 3/4 |
71.4 |
2 13/16 |
9150 or 9450 |
159.5 |
2.37:1 |
NC50-70(41/2IF) |
Z01/Z02-12000 |
177.8 |
7 |
57.2 |
2 1/4 |
9150 or 9450 |
164.7 |
2.54:1 |
NC50-70(41/2IF) |
Z01/Z02-12100 |
177.8 |
7 |
71.4 |
2 13/16 |
9150 or 9450 |
164.7 |
2.73:1 |
NC50-72(41/2IF) |
Z01/Z02-24000 |
184.2 |
7 1/4 |
71.4 |
2 13/16 |
9150 or 9450 |
169.5 |
3.12:1 |
NC56-77 |
Z01/Z02-13000 |
196.8 |
7 3/4 |
71.4 |
2 13/16 |
9150 or 9450 |
185.3 |
2.70:1 |
NC56-80 |
Z01/Z02-14000 |
203.2 |
8 |
71.4 |
2 13/16 |
9150 or 9450 |
190.1 |
3.02:1 |
6 5/8 REG |
Z01/Z02-15000 |
209.6 |
8 1/4 |
71.4 |
2 13/16 |
9150 or 9450 |
195.7 |
2.93:1 |
NC61-90 |
Z01/Z02-16000 |
228.6 |
9 |
71.4 |
2 13/16 |
9150 or 9450 |
212.7 |
3.17:1 |
7 5/8 REG |
Z01/Z02-17000 |
241.3 |
9 1/2 |
76.2 |
3 |
9150 or 9450 |
223.8 |
2.81:1 |
NC70-97 |
Z01/Z02-25000 |
247.6 |
9 3/4 |
76.2 |
3 |
9150 or 9450 |
232.6 |
2.57:1 |
NC70-100 |
Z01-Z02-18000 |
254 |
10 |
76.2 |
3 |
9150 or 9450 |
237.3 |
2.81:1 |
8 5/8 REG |
Z01/Z02-19000 |
279.4 |
11 |
76.2 |
3 |
9150 or 9450 |
266.7 |
2.84:1 |
Notes:Slips and elevator grooves can be produced upon the customers' requirement.
In our factory, we can produce special-use machine tools for oil-field, Including CNC or Non-CNC Oil Country Lathe(Pipe Thread Lathe), CNC or Non-CNC Deep Hole Boring and Drilling Machine, CNC Deep Hole Honing Machine, etc.
Oil Pipe Thread Lathe
Deep Hole Machine
Send Inquiry to This Supplier
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