GB/T 34204 CT55; CT60; CT70; CT80; CT90 Coiled Tubing Seamless Low Carbon Alloy Steel Tube For Petroleum

Material

The GB/T 34204 standard specifies the requirements for seamless low carbon alloy steel tubes used in coiled tubing applications in the petroleum industry. These tubes are designed to withstand high pressures and temperatures, making them suitable for various oil and gas extraction processes.

Specification

The standard outlines the specifications for different grades of coiled tubing, including CT55, CT60, CT70, CT80, and CT90. Each grade has specific mechanical properties and chemical compositions tailored for various operational requirements.

Chemical Composition

The chemical composition of the low carbon alloy steel tubes is critical for ensuring their performance in demanding environments. Below is a table summarizing the chemical composition for each grade:

Mechanical Properties

The mechanical properties of the coiled tubing are essential for ensuring their durability and performance under operational conditions. The following table presents the mechanical properties for each grade:

Application

The seamless low carbon alloy steel tubes specified in GB/T 34204 are primarily used in the petroleum industry for various applications, including:

• Coiled Tubing Operations: Used for drilling, completion, and workover operations in oil and gas wells.
• Well Intervention: Facilitating the repair and maintenance of existing wells.
• Hydraulic Fracturing: Serving as a conduit for injecting fluids into the wellbore to enhance oil and gas recovery.
• Production Tubing: Used in the production phase to transport hydrocarbons from the reservoir to the surface.