The CDC is a specialized threaded joint designed for use in coiled-tube drilling, featuring a coupling-type design. It maintains the structural integrity and sealing integrity of the joint even under complex loads such as tension, compression, internal pressure, external pressure, and bending. It is suitable for use in surface, vertical, and general inclined wells. The joint’s connection strength, crushing pressure, internal yield pressure, and other performance characteristics meet the standards of similar tank bodies.
Product Specifications: 5-1/2″ to 13-3/8″
Steel grades: J55, K55, N80, P110
It simultaneously meets the requirements of both drilling and completion operations. It can withstand drilling loads such as rotational torque, vibration, impact, and bending, while also ensuring high gas tightness in cementing and production. The structural characteristics differ significantly from those of conventional pipes and gas-tight pipes, primarily in terms of high torsional resistance, high connection strength, rapid clamping, and composite sealing.
Capable of withstanding high torque from drilling operations, preventing overloading of threads and sticking together.
Excellent thread connection performance and resistance to adhesion.
This makes it easier to fasten and reduces the risk of the fastener sticking, as well as the time required for fastening, thereby significantly increasing the speed at which the tubing can be lowered into the well.
The sealing surfaces remain in perfect contact even during rotation and bending, ensuring no leaks.
Significantly enhances the compression resistance and torsional resistance of threaded joints.
It maintains excellent sealing performance even when subjected to tensile, compressive, and bending loads.
The thread profile design is sound, offering excellent connection strength and resistance to adhesion.
After the coupling nut is tightened onto the pipe body, the inner hole becomes smooth, eliminating the occurrence of turbulent flow within the pipe.
The torsional resistance of the threaded joint has been significantly enhanced, reaching more than twice that of API’s standard trapezoidal threaded joints.
Special thread design to prevent slipping and failure under tensile loads. Ensures that the threads for loading and unloading, as well as the sealing surfaces, do not become stuck.
Our team of professional technical service experts is available 24/7 to provide on-site technical support for pipe installation work, helping to ensure the long-term efficient operation of equipment.
