Technical Data:

Grades and Applications:

1. E75: Standard grade for medium-depth wells.
2. X95: Enhanced tensile strength for more demanding conditions.
3. G105: Used in wells requiring higher tensile strength and resistance to sour gas (H₂S).
4. S135: Ultra-high strength for deep and high-torque drilling operations.

Features:

• API SPEC 5DP Compliant: Manufactured to meet or exceed the specifications set by the American Petroleum Institute (API).
• Heat Treatment: All pipes undergo heat treatment to enhance toughness, flexibility, and overall performance in harsh conditions.
• Thread Connections: API NC and REG threaded tool joints provide high reliability for secure connection under extreme forces.
• High Durability: Engineered for long service life with fatigue-resistant properties that prevent early wear and failure.
• Corrosion Resistance: Optional external coatings provide additional protection against corrosion from drilling fluids and environments.

More Details:

• Tool Joints: Drill pipes are equipped with tool joints that meet API requirements. Options include NC38, NC40, NC46, NC50, and REG types.
• End Protection: Each pipe comes with metal or plastic thread protectors to maintain the integrity of the threads during transport and storage.
• Testing and Inspection: Each pipe is subjected to rigorous testing, including nondestructive testing (NDT), hardness testing, tensile strength testing, and impact testing to ensure they meet the required standards.
• Customizable Options: Lengths can be customized, and pipes can be adapted for different environments, including high-pressure wells, deep wells, and directional drilling.

Applications:

• Onshore and Offshore Drilling: Suitable for a wide range of drilling environments, from shallow onshore wells to deep offshore applications.
• Directional Drilling: With superior flexibility and strength, these drill pipes are ideal for directional and horizontal drilling operations.
• High-Pressure Wells: The high tensile strength of G105 and S135 grades make them perfect for deep, high-pressure drilling operations.
• Sour Gas Wells: G105 grade is specially treated to resist the corrosive effects of sour gas (H₂S), making it suitable for sour gas drilling applications.

API Drill Pipe Manufacturing Process

Our API Drill Pipes undergo a meticulous and comprehensive manufacturing process to ensure they meet the highest industry standards. The process includes multiple stages, each focusing on enhancing the durability, strength, and precision of the pipes to meet the requirements of demanding oil and gas drilling environments.

1. Raw Material Selection:

• Steel Grade: High-grade alloy steel (e.g., AISI 4130, AISI 4140) is selected based on the specific application requirements.
• Quality Control: Each batch of steel undergoes chemical composition analysis and mechanical property testing to ensure it meets the API standards for tensile strength, yield strength, and ductility.

2. Heat Treatment:

• Quenching and Tempering: The drill pipe body is subjected to quenching and tempering to improve toughness and flexibility. This process optimizes the pipe’s resistance to fatigue, impact, and wear, making it ideal for high-pressure and high-torque drilling operations.
• Uniform Microstructure: The heat treatment process ensures a consistent and uniform microstructure, which is essential for achieving high-performance characteristics such as strength, elasticity, and hardness.

3. Pipe Body Formation:

• Seamless Pipe Rolling: The seamless pipe is manufactured through hot-rolling processes, where the steel billet is heated and passed through rolling mills to form the drill pipe body with the required diameter and wall thickness.
• Precision Machining: After forming, the pipe is subjected to precision machining to ensure that the outer diameter and internal dimensions are within the required tolerances.

4. Tool Joint Manufacturing:

• Threading: Tool joints are machined separately and precisely threaded to ensure proper engagement and secure connections during drilling operations.
• Phosphatization and Copper Plating: The threads undergo phosphatization or copper plating to improve corrosion resistance and prevent thread galling (seizing or sticking during makeup).
• Welding and Hardening: The tool joints are welded to the drill pipe body and subjected to hardening processes to enhance their wear resistance.

5. Nondestructive Testing (NDT):

• Ultrasonic Testing: Each pipe undergoes ultrasonic testing to detect any internal flaws such as cracks or inclusions that may affect its performance during drilling.
• Magnetic Particle Testing: This is used to inspect the surface of the pipe for cracks, pits, and other surface discontinuities.
• Hardness Testing: Hardness is checked to ensure that the pipe material meets the required specifications for toughness and durability.

6. Performance Testing:

• Tensile and Yield Strength Testing: The pipe is subjected to tensile strength tests to confirm its ability to handle the forces encountered during drilling.
• Pressure Testing: Pipes are tested under high pressure to ensure they can withstand the maximum working pressures encountered in the field.
• Fatigue Testing: Pipes are subjected to cyclic loading to simulate real drilling conditions and to verify their fatigue resistance.