CPC F16L 9/147 (2013.01) [B29C 48/022 (2019.02); B29C 48/09 (2019.02); B29C 48/21 (2019.02); B32B 1/08 (2013.01); B32B 15/08 (2013.01); B32B 15/18 (2013.01); B32B 27/06 (2013.01); B32B 27/12 (2013.01); B32B 27/288 (2013.01); C08G 2/16 (2013.01); F16L 9/04 (2013.01); F16L 58/00 (2013.01); B29K 2096/00 (2013.01); B29L 2023/22 (2013.01); B32B 2597/00 (2013.01)] | 20 Claims |
1. A non-metallic spoolable composite pipe for oil and gas flowlines, comprising:
an inner extruded tubular liner configured to be in direct contact with a fluid comprising hydrocarbons flowing through the spoolable composite pipe;
a polymer reinforcement layer surrounding the inner extruded tubular liner; and
an outer extruded tubular cover surrounding the reinforcement layer;
where the inner extruded tubular liner comprises an aliphatic polyketone having the formula (I)
[[—CH2CHR1(C═O)—]n[—CH2CHR2(C═O)—]m]p, (I)
where R1 and R2 are independently from one another the same or different,
where R1 is selected from the group consisting of hydrogen and an alkyl group, and
where R2 is an alkyl group, and
where n is less than 0.5 and n+m=1,
where p is an integer between 500 and 5000,
where structural units [—CH2CHR1(C═O)—] and [—CH2CHR2(C═O)—], are randomly distributed, blocked or both, and
where the spoolable composite pipe is configured to operate at temperatures of up to about 110° C. and to carry hydrocarbons having an aromatic content of up to about 35% by volume based on the total hydrocarbons content.
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