ASTM D8436-23 pdf free download – Standard Specification For Fluoropolymer-Based Materials For Use For Encapsulation Of Downhole Cable.
1.1 This specification covers thermoplastic fluoropolymer-based materials intended for use as an encapsulation material for downhole cables during well completion by the petroleum and natural gas industries.
1.1.1 The fluoropolymer-based materials to be used for this purpose must be virgin materials and may contain up to 25% by weight of reprocessed material (regrind) of the same fluoropolymer generic material type. When reprocessed material is included, it must be thoroughly mixed with virgin material.
1.2 The fluoropolymers covered by this specification include, but are not limited to, ethylene tetrafluoroethylene (ETFE), polyethylene chlorotetrafluoroethylene (ECTFE), fluorinated ethylene propylene (FEP), polyvinylidene fluoride (PVDF), copolymers of PVDF, polychlorotrifluoroethylene (PCTFE), polytetrafluoroethylene (PTFE), and perfluoroalkoxy alkane (PFA).
1.3 This specification establishes common temperature ratings for the encapsulation materials and also describes requirements for alternative temperature ratings.
1.4 The applications for the encapsulation materials covered by this specification are all related to downhole cables used during well completion, including control lines (CL), tubing encased conductors (TEC), tubing encased fiber cables (TEF), and tubing encased power cables (TEPC). Other downhole cable products such as surface-controlled sub-surface safety valves (SCSSV or SSSV) and chemical injection lines/chemical injection tubes (CIL/CIT) are also covered by this specification.
1.5 Values stated in SI units are considered standard; values given in parentheses after SI units are provided for informational purposes only and are not considered standard.
