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Place Of Origin: China
Status: New
Warranty Period: 1 Year
Service System: No Overseas Service Provided
Applicable Industry: Energy &Amp; Mining
Out-of-warranty Service: Video Technical Support, Online Support, Spare Parts
Where To Provide Local Services (in Which Countries Are There Overseas Service Outlets): None
Showroom Location (in Which Countries Are There Sample Rooms Overseas): None
Video Factory Inspection: Provided
Mechanical Test Report: Provided
Marketing Type: Ordinary Product
Core Component Warranty Period: 1 Year
Packaging: Export Packing
Transportation: Ocean,Land,Air
Place of Origin: China
Certificate: API 7-1
Port: Tianjin,Shanghai,Qingdao
Payment Type: T/T
Incoterm: FOB,CFR,CIF,EXW
There are different kinds of drill collars, including slick drill collar, Spiral Drill Collar, non-magnetic drill collar, square drill collar and so on. 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.
● Features
1. Eccentric-weight drill collar is an effective anti-deviation drilling tool with high drill pressure used in oblique areas, rectifying oblique as well.
2. When drilling directional wells eccentric-weight drill collar is an effective tool to reduce oblique or straighten the well hole using high drilling pressure.
3. Eccentric-weight drill collar has the advantages of simple structure, convenient use, connected directly to common drill collar without centralizers, greatly convenient for sinking in, fishing and milling operations.
4. Eccentric-weight drill collar runs downhole safely, danger of leakage or bit freezing hard to appear.
5. Pay much attention to avoid mud balling and prevent effect of anti-deviation .
Drill Collar Specification | ||||||||
Thread Type | O.D. | I.D. | Length | Diameter of shoulder guide Angle | Reference bending strength ratio | |||
mm | inch | mm | inch | mm | inch | |||
NC23-31 | 79.4 | 3 1/8 | 31.8 | 1 1/4 | 9150 | 30ft | 76.2 | 2.57:1 |
NC26-35(23/8IF) | 88.9 | 3 1/2 | 38.1 | 1 1/2 | 82.9 | 2.42:1 | ||
NC31-41(27/8IF) | 104.8 | 4 1/8 | 50.8 | 2 | 100.4 | 2.43:1 | ||
NC35-47 | 120.7 | 4 3/4 | 50.8 | 2 | 114.7 | 2.58:1 | ||
NC38-50(31/2IF) | 127 | 5 | 57.2 | 2 1/4 | 121 | 2.38:1 | ||
NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150 or 9450 | 30ft or 31ft | 144.5 | 2.49:1 |
NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 144.5 | 2.84:1 | ||
NC44-62 | 158.8 | Apr-61 | 57.2 | 2 1/4 | 149.2 | 2.91:1 | ||
NC46-62(4IF) | 158.8 | Apr-61 | 71.4 | 2 13/16 | 150 | 2.63:1 | ||
NC46-65(4IF) | 165.1 | Feb-61 | 57.2 | 2 1/4 | 154.8 | 2.76:1 | ||
NC46-65(4IF) | 165.1 | Feb-61 | 71.4 | 2 13/16 | 154.8 | 3.05:1 | ||
NC46-67(4IF) | 171.4 | Apr-63 | 57.2 | 2 1/4 | 159.5 | 3.18:1 | ||
NC50-67(41/2IF) | 171.4 | Apr-63 | 71.4 | 2 13/16 | 159.5 | 2.37:1 | ||
NC50-70(41/2IF) | 177.8 | 7 | 57.2 | 2 1/4 | 164.7 | 2.54:1 | ||
NC50-70(41/2IF) | 177.8 | 7 | 71.4 | 2 13/16 | 164.7 | 2.37:1 | ||
NC50-72(41/2IF) | 184.2 | Apr-71 | 71.4 | 2 13/16 | 169.5 | 3.12:1 | ||
NC56-77 | 196.8 | Apr-73 | 71.4 | 2 13/16 | 185.3 | 2.70:1 | ||
NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 190.1 | 3.02:1 | ||
65/8REG | 209.6 | Apr-81 | 71.4 | 2 13/16 | 195.7 | 2.93:1 | ||
NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 212.7 | 3.17:1 | ||
75/8REG | 241.3 | Feb-91 | 76.2 | 3 | 223.8 | 2.81:1 | ||
NC70-97 | 247.6 | Apr-93 | 76.2 | 3 | 232.6 | 2.57:1 | ||
NC70-100 | 254 | 10 | 76.2 | 3 | 237.3 | 2.81:1 | ||
85/8REG | 279.4 | 11 | 76.2 | 3 | 266.7 | 2.84:1 | ||
Note: 1.Drill collar thread type: NC-Digital IF-Internal flat type REG-Normal type | ||||||||
2.Bending strength ratio: the ratio of the modulus of the cross section and the modulus of the cross section of the cross section of the dangerous section of the inner thread | ||||||||
In addition, our company can produce the drill collar and spiral drill collar, which can also produce the special specifications of the drill collar and the high efficiency and wear-resisting lengthening drill collar |
Product Categories : Drilling Tubular > Drill Collar
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.