drill collar
Product Details:
| Type | Drill Collar |
|---|---|
| Certification | API SPEC 7-1 |
| Use | Well Drilling |
| Processing Type | Other |
| Material | AISI4145H chrome-molybdenum |
| Machine Type | Drilling Tool |
| colour | green |
| Place of Origin | Shanxi, China (Mainland) |
| Brand Name | Weigao |
| Model Number |
3 1/8", 3 1/2",4 1/8",4 3/4",6 1/4",6 1/2&quo... |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1 Piece/Pieces per order |
|---|---|
| Price: | FOB from Tianjin Port to any port USD 1500~4500 |
| Packaging Details: | Usually we pack them with steel protecting caps, pack them in bundles if needed, or according to customs' needs |
| Delivery Time: | 10~30days |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 100 Piece/Pieces per Week |
Detailed Product Description
Drill Collar
| Specifications of drill collar | |||||||
| D | d | Lmm | DFmm | ||||
| Thread Type | Outside Diameter | Inside Diameter | Length (mm) | Shoulder Bevel Diameter | Reference Bending Strength Ratio | ||
| mm | in | mm | in | ||||
| NC23-31 | 79.4 | 3 1/8 | 31.8 | 1 1/4 | 9150 | 76.2 | 2.57:1 |
| NC26-35(2 3/8IF) | 88.9 | 3 1/2 | 38.1 | 1 1/2 | 9150 | 82.9 | 2.42:1 |
| NC31-41(2 7/8IF) | 104.8 | 4 1/8 | 50.8 | 2 | 9150 | 100.4 | 2.43:1 |
| NC35-47 | 120.7 | 4 3/4 | 50.8 | 2 | 9150 | 114.7 | 2.58:1 |
| NC3850(3 1/2IF) | 127 | 5 | 57.2 | 2 1/4 | 9150 | 121 | 2.38:1 |
| NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150/9450 | 144.5 | 2.49:1 |
| NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 | 9150/9450 | 149.2 | 2.91:1 |
| NC46-62(4IF) | 158.8 | 6 1/4 | 71.4 | 2 13/16 | 9150/9450 | 150 | 2.63:1 |
| NC46-65(4IF) | 165.1 | 6 1/2 | 57.2 | 2 1/4 | 9150/9450 | 154.8 | 2.76:1 |
| NC46-65(4IF) | 165.1 | 6 1/2 | 71.4 | 2 13/16 | 9150/9450 | 154.8 | 3.05:1 |
| NC46-67(4IF) | 171.4 | 6 3/4 | 57.2 | 2 1/4 | 9150/9450 | 159.5 | 3.18:1 |
| NC50-67(4 1/2IF) | 171.4 | 6 3/4 | 71.4 | 2 13/16 | 9150/9450 | 159.5 | 2.37:1 |
| NC50-70(4 1/2IF) | 177.8 | 7 | 57.2 | 2 1/4 | 9150/9450 | 164.7 | 2.54:1 |
| NC50-70(4 1/2IF) | 177.8 | 7 | 71.4 | 2 13/16 | 9150/9450 | 164.7 | 2.73:1 |
| NC50-72(4 1/2IF) | 184.2 | 7 1/4 | 71.4 | 2 13/16 | 9150/9450 | 169.5 | 3.12:1 |
| NC50-77 | 196.8 | 7 3/4 | 71.4 | 2 13/16 | 9150/9450 | 185.3 | 2.70:1 |
| NC50-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9150/9450 | 190.1 | 3.02:1 |
| 6 5/8REG | 209.6 | 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 |
| 7 5/8REG | 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 | 10 | 76.2 | 3 | 9150/9450 | 237.3 | 2.81:1 |
| 8 5/8REG | 279.4 | 11 | 76.2 | 3 | 9150/9450 | 266.7 | 2.84:1 |
Spiral sizes of Spiral Drill Collar
D Outside Diameter | A Depth of Cut mm | ±25.4 Spiral pitch mm | B Depth of Cut mm | |
mm | in | |||
98.4 | 37/8 | 4.0±0.79 | 914 | |
101.6~111.1 | 4~43/8 | 4.8±0.79 | 914 | |
114.3~146.1 | 41/251/8 | 5.6±0.79 | 965 | |
133.4146.1 | 51/4~53/4 | 6.4±0.79 | 1067 | |
149.2~161.9 | 57/8~63/8 | 7.1±1.59 | 1067 | |
165.1~177.8 | 61/2~7 | 7.9±1.59 | 1168 | |
181.0~200.0 | 71/8~77/8 | 8.7±1.59 | 1626 | 5.6±0.79 |
203.2~225.4 | 8~87/8 | 9.5±1.59 | 1727 | 6.4±0.79 |
228.6~250.8 | 9~97/8 | 10.3±2.37 | 1829 | 7.1±1.59 |
254.0~276.2 | 10~107/8 | 11.1±2.37 | 1930 | 7.9±1.59 |
279.4 | 11 | 11.9±2.37 | 2032 | 8.7±1.59 |
Note: spiral drill collar has three spiral grooves, right hand, well distributed | ||||
Technical Specification of Non-magnetic Drill Collar
| Mechanical Property (non-magnetic) | ||||
| OD | σ0.2 | σb | δ4% | |
| Outside Diameter | Yield Strength | Tensile Strength | Elongation | |
| mm | in | |||
| 79.4171.4 | 3 1/86 3/4 | ≥758 | ≥827 | ≥18 |
| 177.8279.4 | 711 | ≥689 | ≥758 | ≥20 |
Magnetic permeability (MPS=1×105/4πNm)
max:1.010
field gradient (hot spots)
max: B ≤ 0.05
drill collar
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Company Info
Shanxi Weigao Petroleum Drilling Tools Manufacturing Co., Ltd.
[China (Mainland)]
[Verified Member]
City: Taiyuan
Province/State: Shanxi
Country/Region : China (Mainland)
Business Type:Manufacturer
Online Postings: Products