JT-PETRO can provide nomarl and many types of special casings and tubings including anticorrosion casing and tubing, high collopse casing, high temperature casing, premium connection casing and tubing have been successively developed some of which have reached the level of world class.
Application
- Casing for oil and gas well drilling
- Tubing for oil and gas extraction
Product Type
- Seamless casing and coupling
- ERW casing
- Seamless tubing and coupling
- Anticorrosion casing and tubing
- High collapse casing
- High temperature casing
- Premium thread connection casing and tubing
- Pup-joint of casing and tubing
- Crossover of casing and tubing
Features
- High precision in size and shape
- Good corrosion resistance
- High collapse strength
- Excellent comprehensive mechanical properties
- High connection strength and sealability
- Constant mechanical properties at high temperature
- Specifications
- API Spec 5CT Specification for Casing and Tubing
- API Spec 5B Specification for Threading, Gauging, and thread Inspection of Casing, Tubing, and Line Pipe Thread
- Other manufactures’ specifications higher than API Spec
Process Flowchart of Casing and Tubing
Process Flowchart of Coupling
High Collapse Casing
Featuring uniform,fine microstructure and optimized chemical composition,these casings can sustain higher external pressure and axial load,suitable for offshore oil wells and those wells with complicated geological conditions.
Sour Service Casing
Featuring excellent anti-H2S corrosion properties,these casings are suitable for medium and deep oil well applications in H2S environment.
Heavy Oil Recovery Casing
Featuring good thermal stability, high collapse strength and good ductility,excellent sealing property in high temperture. These casing are especially used for thermal production well,having high strength and ductility,suitable for steam injection at 350℃-400℃,and injection pressure 15-26 Mpa at the perforation section of wells.
Special Thread Casing and Tubing
We can provide special thread casing and tubing, these special thread has very good gas sealing performance, according to customer’s request，such as below TPCO special thread.
Internal Coating for Casing & Tubing
Generally, the internal coating for casing and tubing is made of optimized epoxy phenolic resin. It has high impact and temperature resistance, perfect edge coverage, extremely high glossiness and flexibility, and excellent adhesion and abrasion resistance. The combination of epoxy and phenolic formulations provides the superior molecular interlinkage, and also the same bend resistance and torque resistance as metal. The internal coating for casing and tubing is suitable for extremely corrosive or high temperature environment, such as chemical treatment wells, high temperature and high pressure corrosive wells. What’s more, it can provide the capability of resistance to scale, pitch and paraffin so as to promote flow efficiency.
Product Type
- Liquid modified epoxy phenolic resin
- Epoxy phenolic resin powder
Features
- Smooth surface
- Excellent adhesion
- Excellent flexibility
- High acid & alkali proof
- Coating thickness: 125-250 μm
- Visual inspection: no run/pin holes/drops/bubbles
- High temperature resistance: up to 204 ℃ (400 ˚F)
Application
- Casing and tubing of Injection water wells and wasted water wells
- Tubing and line pipe for acidizing
- Strengthened exploitation system and brine treatment system
Process Flowchart of Internal Coating for Casing and tubing
