This part of SY/T 6952 specifies the specifications, structural types, technical requirements, test and inspection methods and quality assurance for threaded connections of production casing and technical casing for thermal recovery wells. This section applies to the design, inspection and selection of threaded connections for production casing and technical casing used in thermal recovery wells based on strain design.
SY/T 6952.4-2014 history
2014SY/T 6952.4-2014 Thermal casing string for strain based design.Part 4: Casing connection