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Product Details:
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| Steel Grade: | 4145H | Thread Type: | NC , REG |
|---|---|---|---|
| Material: | Alloy Steel | OD: | 79.4-279.4 Mm |
| High Light: | Spiral Non Magnetic Drill Collar,Oilfield Non Magnetic Drill Collar,API Non Magnetic Drill Collar |
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API 7-1 Oilfield Sprial Drill Collar and Non-Magnetic Drill Collar
Product Descrption
Spiral drill collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from diffirential pressure. The drill collars are manufactired strictly according to API Spec7-1 and Standard SY5144. The drill collars are made of modified AISI 4145H chromium molybdenum alloy steel.
There are different kinds of drill collars, including round drill collar,spiral drill collar, non-magnetic drill collar, square drill collar and so on. Ordinary drill collar is the circular cross section, the center has a water hole,the wall thickness is larger,the nozzle is smaller, the weight of per unit length is greater than the size of drill pipe almost 4- 5 times .The majority of drill collar is thread processing directly on the pipe body , but some of them also use the replaced joint.
Main Specifications of Our Drill Collar
| Type | OD(mm) | ID(mm) | L(m) ±152.4mm d |
DF(mm) ±0.4 |
NC23-31 |
79.4 | 31.8 | 9.14 | 76.2 |
| NC26-35 | 88.9 | 38.1 | 9.14 | 82.9 |
| NC31-41 | 104.8 | 50.8 | 9.14or9.45 | 100.4 |
| NC35-47 | 120.6 | 50.8 | 9.14or9.45 | 114.7 |
| NC38-50 | 127 | 57.2 | 9.14or9.45 | 121 |
| NC44-60 | 152.4 | 57.2 | 9.14or9.45 | 144.5 |
| NC44-60 | 152.4 | 71.4 | 9.14or9.45 | 144.5 |
| NC46-62 | 158.8 | 57.2 | 9.14or9.45 | 149.2 |
| NC46-62 | 158.8 | 71.4 | 9.14or9.45 | 150 |
| NC46-65 | 165.1 | 57.2 | 9.14or9.45 | 154.8 |
| NC46-65 | 165.1 | 71.4 | 9.14or9.45 | 154.8 |
| NC46-67 | 171.4 | 57.2 | 9.14or9.45 | 159.5 |
| NC50-70 | 177.8 | 57.2 | 9.14or9.45 | 164.7 |
| NC50-70 | 177.8 | 71.4 | 9.14or9.45 | 164.7 |
| NC50-72 | 184.2 | 71.4 | 9.14or9.45 | 169.5 |
| NC56-77 | 196.8 | 71.4 | 9.14or9.45 | 185.3 |
| NC56-80 | 203.2 | 71.4 | 9.14or9.45 | 190.1 |
| 6-5/8REG | 209.6 | 71.4 | 9.14or9.45 | 195.6 |
| NC61-90 | 228.6 | 71.4 | 9.14or9.45 | 212.7 |
| 7-5/8REG | 241.3 | 76.2 | 9.14or9.45 | 223.8 |
| NC70-97 | 247.6 | 76.2 | 9.14or9.45 | 232.6 |
| NC70-100 | 254 | 76.2 | 9.14or9.45 | 237.3 |
| 8-5/8REG | 279.4 | 76.2 | 9.14or9.45 | 266.7 |
| NC50-67 | 171.5 | 71.4 | 9.14or9.45 | 159.5 |
Mechanical Property Of TR Drill Collar
OD Size |
Yield Strength σ0.2 Mpa(psi) |
Tensile Strength σb Mpa(psi) |
Elongation δ4% |
Reduction of area % |
Reduction of area % |
3-1/8~6-3/4 |
≥758 -110,000 |
≥827 -120,000 |
≥18 |
50 | ≥50 |
| 7~10 | ≥689 -100,000 |
≥758 -110,000 |
≥20 |
Xi'an TianRui Petroleum Machinery Equipment Company Limited is a professional manufacturer and supplier of all types of petroleum equipment. The company is located in Xi'an city of China. And we have many years of history in the petroleum equipment industry. Our main products include solid control equipment, oil production equipment, wellhead equipment, well control equipment, downhole tools, OCTG pipe, vavle & pipe fitting and oilfield tools.
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time.
3. Flexible payment terms.
4. Timely after-sale service.
5. Most of our equipment can be replaceable with international brands.
6. Our products have been exported to Argentina, Egypt, US, Australia, Romania, Pakistan, Dubai, Abu Dhabi, Iran, India, Indonesia, Vietnam, Malaysia and many other countries.
Contact Person: Ms. Sunny Lee
Tel: +86 13186019379
Fax: 86-29-8633-2919
