What Are the Production Steps for Casing and Tubing Pup Joints?
Casing and tubing pup joints are essential components in oil and gas drilling operations. They serve as connectors between different sections of casing or tubing, ensuring a secure and reliable connection. The production process involves several key steps to ensure quality, durability, and performance. Here’s an overview of the main stages involved:
Upsetting
Upset forging is a critical step where a plain end blank is heated and then forged at both ends to increase the cross-sectional area. This strengthens the joint and improves its load-bearing capacity. At our facility, we have introduced automation into the handling process, which enhances safety and precision. Our automated handling table allows us to produce pup joints with consistent dimensions and high accuracy, ensuring that every product meets strict quality standards.
Hydro Testing
After upsetting, each pup joint undergoes hydrostatic testing. This non-destructive test involves filling the joint with water under pressure to detect any potential leaks. Our modern hydro testing equipment is designed to handle various lengths and pressures, complying with API standards and customer specifications. This step ensures that all products are leak-free and capable of withstanding the demanding conditions of oil and gas environments.
Full Body Ultrasonic Inspection
We use a custom-built, fully automated ultrasonic inspection system to examine the entire length of our tubing pup joints. This advanced method is highly effective in detecting internal and external flaws, including longitudinal and transverse cracks. As one of the first companies in the industry to implement this technology, we can identify even the smallest defects that other methods might miss. The high penetration power and sensitivity of ultrasonic testing make it one of the most reliable quality control procedures available.
Profiling
Some of our pup joints are manufactured using heavy-wall mechanical tubing. The profiling process takes place on a high-precision CNC machine, allowing us to achieve tight dimensional tolerances and excellent surface finishes. This ensures that each joint fits perfectly with the rest of the string, reducing the risk of failure during installation or operation.
Special End Area Inspection
To further ensure quality, we perform wet magnetic particle testing on the end areas of the pup joints. This non-destructive technique is used to detect surface and near-surface defects such as cracks or porosity. The inspection is conducted for both longitudinal and transverse flaws, giving us confidence in the structural integrity of each component before it leaves the factory.
Heat Treatment
Each pup joint goes through a customized heat treatment process to enhance its mechanical properties. Our dedicated heat treatment line is flexible and can be adjusted for different lengths and material types. After heat treatment, the joints are re-straightened to maintain their shape and alignment. This step ensures that the final product is strong, durable, and ready for use in the field.
By following these meticulous production steps, we guarantee that our casing and tubing pup joints meet the highest industry standards, providing our customers with reliable and long-lasting solutions for their critical applications.
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Chongqing Yitumei New Materials Co., Ltd. , https://www.cqettume.com