What is API 5CT

The API standard is the abbreviation of the American Petroleum Institute. It is a standard forcasing pipeissued by the American Petroleum Institute. It is also one of the production standards for casing pipe. API5CT can be used for oil or natural gas drilling and transportation. It is used in the natural gas industry or petroleum. Standard steel pipe specification for casing and tubing. According to the data, the latest versions of Casing and Tubing API standards have been put into use because the technical updates provided by these new versions have been agreed upon within the Tubular Goods Promotion Program Subcommittee.

Standard coverage of API 5CT

The standard stipulates the technical delivery conditions for casing pipe (casings, oil pipes and pup joints), coupling blanks, coupling materials and accessory materials, and establishes product specification levels (PSL-1, PSL-2 and PSL-3) requirements. The requirements of PSL-1 are the basis of the standard. Specifies the standard technical requirements for PSL-2 and PSL3 product specification grades for all steel grades except H40, L809Cr and C110 steel grades. Upon negotiation between the purchaser and the manufacturer, this standard may also be applied to plain-end pipes of other specifications and wall thicknesses.

Casing and Tubing

Casing is the main structural part of oil and gas wells and plays a vital role in the safe fixation of the well wall or wellbore. It includes surface casing, technical casing and reservoir casing. It prevents wellbore collapse by installing steel pipes and consolidating them. The installation of the bracket can maintain the stability of the wellbore, prevent water and sand pollution, separate formation water, and control the well pressure during oil well drilling, production and operation.

Tubing refers to pipelines running inside casing as a production channel for oil and natural gas. It must be strong enough to resist the loads and deformations associated with production and processing, and need to be sized to support expected oil and gas production. APT5CT specifies the requirements for casing and tubing used in oil and gas production. Materials with sufficient strength and functionality must be selected for filling. Casing and tubing are the main components of drilling construction. They are selected based on the specific conditions of each well. The expected production flow and economics determine the tubing size, and ensure that the tubing size and setting depth, as well as the well wall thickness and material grade are suitable for the expected load.

Processing plants and pipe mills also have strict requirements for the production of casing and tubing.

Processing plants should have heat treatment equipment to heat treat pipe and coupling blanks, as well as pipe weighing and marking equipment. The pipe manufacturer shall be equipped with pipe making equipment, pipe weighing and marking equipment, and shall be able to conduct all required tests and inspections. When subcontractors conduct tests or inspections, they must be carried out under the supervision of the processing plant or pipe manufacturer and in accordance with documented procedures to ensure compliance with the relevant standards.

In general, the importance of casing and tubing in oil and gas production cannot be ignored. Their quality and safety directly affect the stability of the wellbore and the smooth progress of production. Processing plants and pipe making plants must strictly abide by relevant standards and regulations to ensure product quality and safety.