Master Tech Company (MTC) has started to use Polyvinylidene fluoride (PVDF) and Polyamide (PA12) in High Temperature Thermoplastic Pipe for Oil and Gas Transport.   

RTP pipes using PVDF and PA12 demonstrate outstanding resistance to complex multiphase oil and gas mixtures up to 130°C.
Key Features of PVDF in RTP Pipe applications:

• Excellent chemical resistance to aliphatic/ aromatic hydrocarbons, CO2 and H2S
• Resistant to long term dynamic loads
• Excellent permeation resistance (low CH4 emission)
• Similar processing to PE
• No scaling or erosion

Key Features of PA12 in RTP Pipe applications:

• Low density.
• Highly resistant to chemicals and solvents.
• Lower permeation of gases
• Very low swelling in hydrocarbons
• No loss of mechanical strength in hydrocarbons
• Excellent impact strength at low temperatures.
• Improved collapse resistance

Successful evaluations were performed by MTC for 4-inch MTC Pipes between 90 to 100°C design temperatures at high pressures using PVDF materials from Solvay and Arkema and hence qualified these grades to be used for the supply of RTP Pipes for extremely high temperature requirements and multiphase oil gas mixtures.
At the same time, the same material qualifications was performed for Polyamide PA12 material from Evonik.

Material qualifications was performed as per the requirement of API Specification 15S for qualifying polymer materials for RTP Pipes.
Series of testings were performed for both polymer materials and extruded pipes to check the compatibility of the selected grades for use in MTC RTP Pipes.
The qualified grade of PVDF material from Arkema was initially used for the supply of 15kms of 4-inch RTP pipes for Jurassic Production Facilities of Off-Plot Works at North Kuwait Areas in year 2018, a project awarded to MTC