Tubing provides the conduit that allow oil and gas to travel from the producing reservoir to the surface facilities. It must be strong enough to resist the production loads and deformations associated with the workovers. Tubing must also be sized correctly to support the required rate of production of the oil and gas.
Zephyr Oilfield Services helps our clients identify the best solutions for each individual's needs. Our extensive tubing inventory allow us to offer the best solutions and accessories for each customer’s particular well conditions. We will help you locate hard to find tubing sizes and grades to accommodate your requirements.
Tubing products are used for a variety of applications including oil and gas well drilling, extracting oil and gas from reservoirs. It is extremely important to select products that match the specifications and requirements of the individual well. Choosing tubing that is too small will restrict production levels and decrease the economic returns of the well. By selecting products that are too large, production levels can't match the economic cost of the tubing and casing string. Always make sure you have accurate information about the well’s flow rate and productivity over time when selecting tubing.
Eight Tubing Design Factors
- Tension - It must withstand its own weight in the running environment. Tubing must stand additional loads when pulling out or setting packers and forces due to temperature and pressure changes
- Burst - Tubing must maintain integrity with high internal pressures and little to no annular pressure support.
- Collapse - Proper tubing must maintain integrity with high annulus pressures with little to not internal pressure support.
- Compression - The tube must stand compressive loads when setting some packers and in highly deviated wells or "dog legs."
- Couplings - Should be free from leaks, maintain ID clearance, strength through bend areas and in compression and tension loads.
- Corrosion - Tube must be designed to counter corrosion reactions with flowing fluids over its lifetime (EX: CO2, H2S, acid, cracking).
- Abrasion/Erosion - Equipment must withstand abrasion and erosion loads over lifetime.
- Stimulation Loads - The tubular must withstand loads from acids, fracturing or other stimulation.
Tubing Size Considerations
When making tubing selection, consider if the size you are choosing is appropriate to:
- Prevent Deposits
- Prevent Liquid Abrasion
- Prevent Particulate Erosion
- For Optimum Lift (IRC and TPC curves)