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OCTG Casing Pipe
OCTG Casing Pipe
OCTG Casing Pipe
OCTG Casing Pipe
OCTG Casing Pipe
OCTG Casing Pipe
OCTG Casing Pipe
OCTG Casing Pipe

OCTG Casing Pipe

Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion.
standard:ASTM
Surface :1. Galvanized 2. Black and Color Painting
introduction
Technical Data
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introduction
Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. Each well uses several layers of casing based on different drilling depths and geological conditions.
After the casing is lowered into the well, cement must be used to fix the casing. Unlike oil pipes and drill pipes, it cannot be reused and is a one-time consumable material. Therefore, the consumption of casing accounts for more than 70% of all oil well pipes.
Casing can be divided into: conduit, surface casing, technical casing and oil layer casing according to usage.
Steel grades of oil casing: H40, J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. Casing end processing forms: short round thread, long round thread, partial trapezoidal thread, special buckle, etc. Used in oil well drilling, it is mainly used to support the well wall during the drilling process and after well completion to ensure the drilling process and the normal operation of the entire oil well after completion.
Technical Data

Weight calculation
[(Outer diameter-wall thickness)*wall thickness]*0.02466=kg/meter (weight per meter)
chemical composition
(1) According to the provisions of SY/T6194-96. The casing and its couplings are of the same steel grade. Sulfur content <0.045%, phosphorus content <0.045%;

OCTG Casing and Tubing
 

Anti-corrosion countermeasures for oil casing
1. First, ensure that water quality meets standards and strictly monitor and manage water quality. Implement separate cleaning and injection, strengthen the cleaning work of main water pipelines, ensure that the water quality in the station and at the bottom of the well meets the standards, and reduce the introduction of corrosion sources into the annular space.
2. For water injection wells that have been newly put into production, use annular protection fluid mainly for sterilization, and form a system to add it regularly.
3. In view of the acceleration effect of mechanical scratches on the corrosion of oil casing, it is recommended to add a rubber ring to the coupling of the oil pipe or a centralizer to the severe deviation of the well to prevent the oil pipe from scratching the casing and during the water injection process. One side contacts the casing.
4. In view of the serious bacterial corrosion under the scale and the slow growth and killing of SRB at high temperatures, high-temperature water or water vapor of 100 degrees Celsius can be regularly injected into the annulus to kill the SRB under the scale.
5. Before the corrosion in the water injection well casing is effectively controlled, it is not recommended to promote the use of cathodic protection and coated casing.

company advantage
Gnee has an ISO9001-2000 quality management system and an ISO14001 environmental protection system. At the same time, it actively develops diversification and has formed mainly carbon steel and stainless steel, covering pipes, profiles, plates and other products. Exported to more than 60 countries and regions including Russia, Canada, India, Brazil, and Southeast Asia.

FAQ
What is the size of casing?
Generally, casing sizes can range from 4.5 inches to 36 inches in diameter.
Can we visit your factory?
Warmly welcome, we will pick you up once we have your schedule.
How can I get a quotation from you?
You can leave us message, and we will reply every message in time. Or we may talk on line.







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