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Coiled Tubing
ASME SA269 316L Stainless Steel Coiled Downhole Tubing
Meilong is a supplier of welded and redrawn, seamless and redrawn downhole tubing which are made from corrosion-resistant austenitic stainless steel 316L. We have been specializing in manufacturing coiled tubing used in the oil and gas industry.
Our tubing is characterized with integrity and quality to be specially used in subsea conditions in the industries of downhole oil and gas extraction.
Meilong is a supplier of welded and redrawn, seamless and redrawn downhole tubing which are made from corrosion-resistant austenitic, duplex, super duplex stainless steels and nickel alloy grades. We have been specializing in manufacturing coiled tubing used in the oil and gas industry.
316L Coiled Downhole Tubing for Control Line
A direct hydraulic control umbilical provides direct hydraulic control of each valve on a subsea christmas tree, through a bundle of tubes from the topsides hydraulic power unit (HPU) to the subsea tree. No electrical power or signal is required. Actuation of valves is by the supply of hydraulic power to the relevant tube. This is accomplished by opening the relevant valve on the manifold located on the topsided HPU. This type of umbilical is limited to subsea production systems with short offsets to the host and few trees.
Thanks to the experience and expertise gained in the production and inspection, the tubes supplied by Meilong fully meet stringent quality requirements of the oil & gas industries. The tubing deployed in the umbilicals used in aggressive subsea and downhole conditions.
316L Coiled Downhole Tubing for Chemical Injection
One of the main challenges in the upstream processes of the oil and gas industry is to protect pipeline and process equipment against waxes, scaling and asphalthane deposits. The engineering disciplines involved in flow assurance play an essential part in mapping the requirements that reduce or prevent loss of production due to pipeline or process equipment blockage. Steel tubing from Meilong is applied to umbilicals and chemical injection systems play an effective role in chemical storage and delivery at an optimizing flow assurance.
Our tubing is characterized with integrity and quality to be specially used in subsea conditions in the industries of oil and gas extraction.
Available Alloy Grades for Coiled Downhole Tubing
|
Austenitic: |
316L |
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Duplex: |
S31803/S32205 S32750 |
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Nickel alloy: |
N08825 N06625 |
316L Stainless Steel Downhole Tubing Features
Close dimensional tolerances
Enhanced mechanical properties
Superior surface finish
High cleanness of inside surface
Controlled ovality, eccentricity
316L Stainless Steel Tube Norms
ASTM A269 / ASME SA269
ASTM A632 / ASME SA632
EN10216-5
Coiled Tubing Process
TIG welded and cold drawn
Seamless and cold drawn
Coiled Tubing Dimension
Outside Diameter: 1/8’’ – 1/2’’ (3.175 mm – 12.7 mm)
Coiled tubing length: up to 32,808 feet (10,000 m)
Tubing with minimum orbital welds reduces the risk of leakages when connecting tubes, and suitable for delivery for customers need.
Single coiled tubing is available
The tubes are delivered with plastic caps for protection from potential contamination during storage.
Delivery condition
Cold worked
Bright annealed
Annealed and polished
Packing
Coiled tubing is level wound on the spool/reel
metal reels and marking can be specified by the customer
Application
Control line
Chemical injection line
Electrical line
Multi-line flat pack
Hydraulic line
Tubing encapsulated conductor
Intelligent well completions
Capillary tubing
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