The special jetting tool can generate high-speed fluid to shot through the casings and rocks to form oriented perforations, and the bottom parts of the perforations are cracked and formed gaps depending on the increasing the annular fluid infusion pressure after exceeding the formation fracture pressure. The selective oriented perforating can be realized in a horizontal well. It has a self-sealing effect and is capable of realizing multi-section perforation fracturing interaction.

The single stage ejector can only perforate a place once while going down, but can perforate more than once by dragging the string. When the string support is used, it is matched with the safety joint, the packer, the check valve and others to drag the string to perform perforation fracturing operation.

During the perforation fracturing, the steel ball is located in the check valve connected below the ejector, the diameter of the oil pipe at the lower end of the ejector is sealed, the throttle is generated by the operation of the ground pumping procedure of the field construction when the high pressure fracturing fluid passes through the ejector, and the oil layer is transmitted by an alloy nozzle for perforating and fracturing operation.