Research Article

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

Table 6

P110 13Cr B type tubing loading point of gas seal test under high tensile condition.

Loading stepsLoading pointInternal pressure (MPa)Axial mechanical load (kN)Total axial load (kN)Test temperature (°C)Holding time (min)

11018461846Ambient temperature1
2275.8412451846Ambient temperature10