Place of Origin:
China
Brand Name:
xi'an rig
Certification:
API 5DP
Model Number:
3
A Comprehensive Introduction to Oil Drilling Equipment
Oil drilling equipment is the core complete-set machinery for oil and gas exploration and development — a large-scale, heavy-duty industrial equipment cluster integrating mechanical, hydraulic, electrical, automation and fluid-control technologies. Its core function is to drill wellbores into the formation, penetrating different geological strata to locate underground oil and gas reservoirs and build production channels for oil and gas extraction. It is widely applied across various oil and gas operation scenarios, including onshore, desert, swamp and offshore environments. The drilling equipment system as a whole is structurally complex, with clearly divided functions and coordinated operation. By function, it can be divided into five major sections: the eight core systems, the downhole drill-string assembly, well-control safety equipment, solids-control supporting equipment and auxiliary support equipment. All equipment is precisely matched and operates in synergy, ensuring that drilling operations are carried out efficiently, safely and continuously.
| Nom Size (in) | Standard O.D.(in) | Bottom Connection‑Hex. O.D.(in) | I.D.(in) | Drive Section(in) | ||||
|---|---|---|---|---|---|---|---|---|
| Standard O.D.(in) | Optional O.D.(in) | Square O.D.(in) | Hex. O.D.(in) | Square | Hex. | A | B | |
| 2 1/2 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC26 3 3/8 | 1 1/4 | 3 1/4 | |||
| 3 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC31 4 1/8 | NC26 3 3/8 | 1 3/4 | 1 1/4 | 3 3/8 | 3 3/8 |
| 3 1/2 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC38 4 3/4 | NC31 4 1/8 | 2 1/4 | 1 3/4 | 4 7/16 | 3 15/16 |
| 4 1/4 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC46 6 1/4 | NC38 4 3/4 | 2 13/16 | 2 1/4 | 5 1/2 | 4 25/32 |
| 4 1/4 | 6 5/8 REG LH 7 3/4 | 4 1/2 REG LH 5 3/4 | NC50 6 3/8 | NC38 4 3/4 | 2 13/16 | 2 1/4 | 5 1/2 | 4 25/32 |
| 5 1/4 | 6 5/8 REG LH 7 3/4 | 5 1/2 FH 7 | NC46 6 1/4 | 3 1/4 | 3 | 6 3/4 | 5 29/32 | |
| 5 1/4 | 6 5/8 REG LH 7 3/4 | NC56 7 | NC50 6 3/8 | 3 1/4 | 3 1/4 | 6 3/4 | 5 29/32 | |
| 6 | 6 5/8 REG LH 7 3/4 | 5 1/2 FH 7 | 3 1/2 | 6 13/16 | ||||
| 6 | 6 5/8 REG LH 7 3/4 | NC56 7 | 3 1/2 | 6 13/16 | ||||
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