The invention discloses a clustered perforating and staged fracturing combined process which comprises the following processes: a, determining the perforated interval clustering according to the requirements of
well logging interpretation results and staged fracturing or volume fracturing processes; b, lowering a completion
pipe string, lowering a completion tool, and sealing a packer according to the design requirements, and filling with a completion fluid; c, completing the first-stage perforating operation by adopting an under-pressure cable conveying oil passing
pipe clustered perforating technology; d, performing fracturing construction; e, after the first-stage fracturing is completed, throwing degradable
fiber temporary plugging balls to plug perforating holes, repeating the second-stage clustered perforating and fracturing till the perforating and fracturing construction operation of a whole well is completed. The requirement of ultrahigh-temperature ultrahigh-pressure ultra-deep well one-trip
pipe string separated layer fracturing can be met, the high-efficient development of the well is realized, the ultrahigh-temperature ultrahigh-pressure perforating and fracturing completion practice is simplified, the operation
ageing is improved greatly, the fracturing operation effect is improved, and the
oil and gas production layer protection is beneficial to be improved, and the single well productivity is improved.