Experimental Study on Sealing Failure Mechanism of Injection-Production String in Underground Gas Storage under Cyclic Loading

Table 11

Remaining service performance of P110 13Cr B type tubing.

Type		Tensile strength (kN)	Internal pressure strength (MPa)	Collapse strength (MPa)
Reference values		1877	85.53	73.74
Residual value		1595	72.7	65.94
Axial loading	Tension (near the wellhead) max 984.74 kN	—	39	41.19
	Tension (near the packer) 676.68 kN	—	51.65	52.2
	Compression (near the wellhead) max 743.08 kN	—	72.53	83.46
	Compression (near the packer) 528.68 kN	—	71.49	81.69