2 3/8" – 5 1/2" // API Spec 5D
API Spec 5D Heavy Duty Drill Pipes
High-Tensile Alloy Steel, Friction-Welded Tool Joints for Deep Boreholes
Engineering Overview & Purpose
KD Sondaj supplies certified API Spec 5D rotary drill pipes from 2 3/8" to 5 1/2" OD in steel grades E-75 through S-135, engineered for high torsional resistance and tensile strength in deep water well, geothermal, and petroleum drilling.
Field Applications
- ✓ Deep rotary water well drilling strings
- ✓ High-temperature geothermal drilling operations
- ✓ Oil, gas and deep mineral coring exploration
Geological Stratum Compatibility:
All abrasive and deep rock formations requiring high rotary torque and pull-back capacity.
Technical Specifications Table
| Engineering Parameter | Certified Rating / Metric |
|---|---|
| API Şartnamesi | API Spec 5D & API Spec 7-1 |
| Dış Çap Ölçüleri | 2 3/8", 2 7/8", 3 1/2", 4", 4 1/2", 5", 5 1/2" |
| Çelik Kalite Sınıfları | Grade E-75, X-95, G-105, S-135 High Tensile Alloy |
| Boy Aralıkları | Range 1 (6.10 m) & Range 2 (9.60 m) |
| Et Kalınlığı | 0.254" (6.45 mm) to 0.415" (10.54 mm) |
| Manşon / Takım Bağlantısı | Friction Welded Heat-Treated High-Torque Tool Joints |
Engineering Q&A Direct Answers
Q: How to select drill pipe sizes and grades for deep water wells?
A: For depths beyond 1000m, 3 1/2" to 5" Range 2 (9.60m) drill pipes in Grade G-105 or S-135 are selected to balance fluid flow velocity, hydraulic friction losses, and hook-load safety margins.