API 7-1 Spiral Non-Magnetic Drill Collar
| Min. Order: | 1 ea |
|---|---|
| Trade Term: | FOB,CFR,CIF,CPT,FCA |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 10000ea |
| Place of Origin: | Shaanxi |
Company Profile
| Location: | Xi'an, Shaanxi, China (Mainland) |
|---|---|
| Business Type: | Manufacturer, Trading Company, Service |
Product Detail
| Model No.: | 3-1/8" Drill collar |
|---|---|
| Means of Transport: | Ocean, Air, Land |
| Production Capacity: | 10000ea |
| Packing: | Standard export packing |
| Delivery Date: | 45days |
Product Description
Description:
Drill collars are heavy, stiff steel tubulars. They are used at the bottom of a BHA to provide weight on bit and rigidity.The primary function of the drill collars is to provide sufficient WOB (Weight on bit). The weight of the collars also ensures that the drill pipe is kept in tension to prevent buckling.
Standard: API 7-1, GOST, NS-1
Material: AISI 4145H, AISI 4145 H MOD, Non-mag material
Size:2-7"~11"
Technical Parameter:
Drill collar | ||||||||||
Products Range | 2-7/8"~11 | |||||||||
Material | AISII 4145HM, Non-Mag | |||||||||
Type of end finish | Slick, spiral | |||||||||
Drill collar No. | OD | Bore Dia | B.S.R | L, ft ±6in | Tensile strength | Impact Value | Hardness | |||
Y.S. | T.S. | Elongation | ||||||||
D Inch (mm) | d Inch (mm) | Round No. | Ft | Impact value | Brinel | |||||
NC23-31 | 3-1/8 (79.4) | 1-1/4 (31.8) | 2.57:1 | 30 | Min.110000psi (≥758Mpa) | Min.140000psi (≥965Mpa) | Min.13% | Min.59ft.lb (≥80j) | 285~341 | |
NC26-35 (2-3/8 IF) | 3-12 (88.9) | 1-1/2 (38.1) | 2.42:1 | 30 | ||||||
NC31-41 (2-7/8 IF) | 4-1/4 (104.8) | 2(50.8) | 2.43:1 | 30/31 | ||||||
NC35-47 | 4-3/4 (120.7) | 2(50.8) | 2.58:1 | 30/31 | ||||||
NC38-50 (3-1/2 IF) | 5(127.0) | 2-1/4 (57.2) | 2.38:1 | 30/31 | ||||||
NC44-60 | 6(152.4) | 2-1/4 (57.2) | 2.49:1 | 30/31 | ||||||
NC44-60 | 6(152.4) | 2-13/16 (71.4) | 2.84:1 | 30/31 | ||||||
NC44-62 | 6-1/4 (158.8) | 2-1/4 (57.2) | 2.91:1 | 30/31 | ||||||
NC46-62 (4 IF) | 6-1/4 (158.8) | 2-13/16 (71.4) | 2.63:1 | 30/31 | ||||||
NC46-65 (4 IF) | 6-1/2 (165.1) | 2-1/4 (57.2) | 2.76:1 | 30/31 | ||||||
NC46-65 (4 IF) | 6-1/2 (165.1) | 2-13/16 (71.4) | 3.05:1 | 30/31 | ||||||
NC46-67 (4 IF) | 6-3/4 (171.5) | 2-1/4 (57.2) | 3.18:1 | 30/31 | ||||||
NC50-67 (4-1/2 IF) | 6-3/4 (171.5) | 2-13/16 (71.4) | 2.37:1 | 30/31 | ||||||
NC50-70 (4-1/2 IF) | 7(177.8) | 2-1/4 (57.2) | 2.54:1 | 30/31 | Min.100000psi (≥758Mpa) | Min.135000psi (≥965Mpa) | Min.13% | Min.59ft.lb (≥80j) | 285~341 | |
NC50-70 (4-1/2 IF) | 7(177.8) | 2-13/16 (71.4) | 2.73:1 | 30/31 | ||||||
NC50-72 (4-1/2 IF) | 7-1/4 (184.2) | 2-13/16 (71.4) | 3.12:1 | 30/31 | ||||||
NC56-77 | 7-3/4 (196.9) | 2-13/16 (71.4) | 2.70:1 | 30/31 | ||||||
NC56-80 | 8(203.2) | 2-13/16 (71.4) | 3.02:1 | 30/31 | ||||||
6-5/8 REG | 8-1/4 (209.6) | 2-13/16 (71.4) | 2.93:1 | 30/31 | ||||||
NC61-90 | 9(228.6) | 2-13/16 (71.4) | 3.17:1 | 30/31 | ||||||
7-5/8 REG | 9-1/2 (241.3) | 3(76.2) | 2.81:1 | 30/31 | ||||||
NC70-97 | 9-3/4 (247.7) | 3(76.2) | 2.57:1 | 30/31 | ||||||
NC70-100 | 10(254.0) | 3(76.2) | 2.81:1 | 30/31 | ||||||
8-5/8 REG | 11(279.4) | 3(76.2) | 2.84:1 | 30/31 | ||||||