Place of Origin:
China
Brand Name:
XI'AN RIG
Certification:
API
Model Number:
NC23-31
Product Introduction
The non-magnetic drill collar adopts self-developed low-carbon stainless steel, implements API specification and SY/T5144 standard, can carry out cold rolling treatment on threads, and can process double shoulder threads and other special threads.
Dimensions of non-magnetic collar
| Sel. | OD (mm) | OD (in) | ID (mm) | ID (in) | mm Length | Df mm | Bending strength ration |
|---|---|---|---|---|---|---|---|
| NC23-31 | 79.4 | 3 1/8 | 31.8 | 1 1/4 | 9150 | 76.2 | 2.57:1 |
| NC26-35 | 88.9 | 3 1/2 | 38.1 | 1 1/2 | 9150 | 82.9 | 2.42:1 |
| NC31-41 | 104.8 | 4 1/8 | 50.8 | 2 | 9150 / 9450 | 100.4 | 2.43:1 |
| NC35-47 | 120.7 | 4 3/4 | 50.8 | 2 | 9150 / 9450 | 114.7 | 2.58:1 |
| NC38-50 | 127.0 | 5 | 57.2 | 2 1/4 | 9150 / 9450 | 121.0 | 2.38:1 |
| NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150 / 9450 | 144.5 | 2.49:1 |
| NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 9150 / 9450 | 144.5 | 2.84:1 |
| NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 | 9150 / 9450 | 149.2 | 2.91:1 |
| NC46-62 | 158.8 | 6 1/4 | 71.4 | 2 13/16 | 9150 / 9450 | 150.0 | 2.63:1 |
| NC46-65 | 165.1 | 6 1/2 | 57.2 | 2 1/4 | 9150 / 9450 | 154.8 | 2.76:1 |
| NC46-65 | 165.1 | 6 1/2 | 71.4 | 2 13/16 | 9150 / 9450 | 154.8 | 3.05:1 |
| NC46-47 | 171.4 | 6 3/4 | 57.2 | 2 1/4 | 9150 / 9450 | 159.5 | 3.18:1 |
| NC50-67 | 171.4 | 6 3/4 | 71.4 | 2 13/16 | 9150 / 9450 | 159.5 | 2.37:1 |
| NC50-70 | 177.8 | 7 | 57.2 | 2 1/4 | 9150 / 9450 | 164.7 | 2.54:1 |
| NC50-70 | 177.8 | 7 | 71.4 | 2 13/16 | 9150 / 9450 | 164.7 | 2.73:1 |
| NC50-72 | 184.2 | 7 1/4 | 71.4 | 2 13/16 | 9150 / 9450 | 169.5 | 3.12:1 |
| NC56-77 | 196.8 | 7 3/4 | 71.4 | 2 13/16 | 9150 / 9450 | 185.3 | 2.70:1 |
| NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9150 / 9450 | 190.1 | 3.02:1 |
| 65/8REG | 208.6 | 8 1/4 | 71.4 | 2 13/16 | 9150 / 9450 | 195.7 | 2.93:1 |
| NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 9150 / 9450 | 212.7 | 3.17:1 |
| 75/8REG | 241.3 | 9 1/2 | 76.2 | 3 | 9150 / 9450 | 223.8 | 2.81:1 |
| NC70-97 | 247.6 | 9 3/4 | 76.2 | 3 | 9150 / 9450 | 232.6 | 2.57:1 |
| NC70-100 | 254.0 | 10 | 76.2 | 3 | 9150 / 9450 | 237.3 | 2.81:1 |
| 85/8REG | 279.4 | 11 | 76.2 | 3 | 9150 / 9450 | 266.7 | 2.84:1 |
Main Tolerance Dimensions of Non-Magnetic Drill Collars
| OD (mm) | OD (in) | OD | ID | Length | Df / Bending strength ratio |
|---|---|---|---|---|---|
| ≤88.9 | ≤3 1/2 | +1.2
|
+1.6
|
+152.4 | ±0.4 |
| >88.9~114.3 | >3 1/2 - 4 1/2 | +1.6
|
+1.6
|
+152.4 | ±0.4 |
| >114.3~139.7 | >4 1/2 - 5 1/2 | +2.0
|
+1.6
|
+152.4 | ±0.4 |
| >139.7~165.1 | >5 1/2 - 6 1/2 | +3.2
|
+1.6
|
+152.4 | ±0.4 |
| >165.1~215.9 | >6 1/2 - 8 1/2 | +4.0
|
+1.6
|
+152.4 | ±0.4 |
| >215.9~241.3 | >8 1/2 - 9 1/2 | +4.8
|
+1.6
|
+152.4 | ±0.4 |
| >241.3 | >9 1/2 | +6.4
|
+1.6
|
+152.4 | ±0.4 |
Mechanical properties of non-magnetic drill collars
| OD (mm) | OD (in) |
Yield strength
Mpa
|
Tensile strength Mpa |
Elongation
|
|---|---|---|---|---|
| 88.9-174.6 | 3 1/8~6 3/4 | ≥758 | ≥827 | ≥18 |
| 177.8-279.4 | 7-11 | ≥689 | ≥758 | ≥20 |
non-magnetic drill collar
magnetic properties
(Magnetic field = 1x105/4biA/m)
1. Relative permeability μr<1.010
2. Magnetic field gradient: △B≤ 0.05μT
Send your inquiry directly to us
english
français
Deutsch
Italiano
Русский
Español
português
Nederlandse
ελληνικά
日本語
한국
العربية
हिन्दी
Türkçe
indonesia
tiếng Việt
ไทย
বাংলা
فارسی
polski
