HEAVY WEIGHT DRILL PIPE
Command Tubular Services Ltd. heavy weight drill pipe is the industry standard for an intermediate weight drill stem member, and is available in standard or spiral designs, making it useful in a number of applications. It shares its dimensions with standard drill pipe for easier handling. Our heavy weight drill pipe carries a unique center upset or wear pad to increase tube life while reducing hole drag and differential sticking problems.
All tool joints exceed API requirements, and all threading is performed in accordance with API Spec 7. Our hardbanding is applied based on our customers specifications and requirements. Tungsten carbide and casing-friendly hardbanding options are also available upon request.
Features and Options
- API Stress Relief Features (SRF)
The pin stress relief groove and box boreback features increase connection flexibility and reduce stress concentration, thereby reducing the frequency of fatigue failures.
- Phosphate Coating
All drill pipe connections are coated with a durable phosphate coating that inhibits corrosion resistance, and prevents shoulder and thread galling.
- Internal Plastic Coating
An internal plastic coating option is available upon request.
Various optional hardbanding materials are available and applied either flush or raised to the tool joint surface to meet your individual needs.
Heavy Weight Drill Pipe Specifications
|Nom. Size||Tube||Mechanical Properties Tube Section||Tool Joint||Approx. Overall Length|
|Nom. Tube Dimensions||Center Upset OD||Elevator Upset OD||Tensile Yield||Torsional Yield||Conn. Size and Type||OD||ID||Tensile Yield||Torsional Yield||Make-up Torque||Approx. Overall Length Pin/Box|
|3-1/2||2-7/16||.625||5.645||4||3-5/8||310,475||18,460||NC 38 (3-1/2 IF)||5||2-7/16||675,045||17,575||10,000||30 / 27||31|
|4||2-9/16||.719||7.410||4-1/2||4-1/8||407,550||27,635||NC 40 (4 FH)||5-1/4||2-9/16||711,475||23,525||13,3000||30 / 27||31|
|4-1/2||2-13/16||.875||9.965||5||4-5/8||548,075||40,715||NC 46 (4 IF)||6-3/8||2-13/16||1,024,500||38,800||21,800||30 / 27||31|
|5||3||1.000||12.566||5-1/2||5-1/8||691,185||56,495||NC 50 (4-1/2 IF)||6-5/8||3||1,266,000||51,375||29,200||30 / 27||31|
|5-1/2||3-1/4||1.063||14.812||6||5-5/8||814,660||74,140||5-1/2 FH||7-1/4||3-1/4||1,349,365||53,080||32,800||30 / 27||31|
|6-5/8||4-1/2||1.063||18.567||7-1/8||6-3/4||1,021,185||118,845||6-5/8 FH||8-1/4||4-1/2||1,490,495||73,215||45,800||30 / 27||31|