Standard Specification for Fluoropolymer-based Materials for Use for Encapsulation of Downhole Cable
Standard Specification for Fluoropolymer-based Materials for Use for Encapsulation of Downhole Cable
SCOPE 1.1 This specification covers thermoplastic fluoropolymer-based materials, intended for use as an encapsulation material for downhole cables used during well completion by the petroleum and natural gas industries. 1.1.1 The fluoropolymer-based materials to be used for this purpose shall be virgin materials and shall be permitted to contain up to 25 %, by weight, of reprocessed material (regrind) of the same fluoropolymer generic material type. When reprocessed material is included, it shall be thoroughly mixed with virgin material. 1.2 The fluoropolymers covered by this specification include but are not limited to the following: 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 associated with downhole cables used during well completion. Such applications include, but are not limited to, the following: 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 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D8436-23 is the standard specification for thermoplastic fluoropolymer-based materials used for encapsulating downhole cables, primarily within the petroleum and natural gas industries during well completion operations. This specification defines the requirements for the quality and performance of fluoropolymer encapsulation materials, ensuring dependable protection and longevity of downhole cables subject to harsh underground environments. Complying with ASTM D8436-23 ensures materials are fit for service, especially in applications where resistance to chemicals, high temperatures, and mechanical stress is crucial.
ASTM D8436-23 is applied to a range of downhole cable types and related products used in oil and gas well completion, providing essential protection against the extreme conditions encountered underground. Key applications include:
Другие стандарты ASTM
The strict requirements for chemical resistance, mechanical durability, and thermal stability make the encapsulation materials specified in ASTM D8436-23 well-suited for high-stakes, long-term operations in demanding oilfield environments.
ASTM D8436-23 references and aligns with several other standards important for the evaluation and use of fluoropolymer encapsulation materials:
By adhering to ASTM D8436-23 and these related standards, manufacturers and users can ensure the reliability and safety of encapsulated downhole cables in critical petroleum and natural gas industry applications.
Keywords: downhole cable encapsulation, fluoropolymer materials, well completion, oil and gas cable protection, ASTM D8436-23, thermoplastic fluoropolymers, chemical resistance, thermal durability, cable insulation standards.