1. Bridge plug perforation staged fracturing system: it mainly includes toe-end opening tool-toe-end valve or toe-end sliding sleeve, which is mainly used to open the first section and establish a liquid channel for bridge plug feeding; Bridge plug slicing tool, which separates the fracturing section from the fracturing preparation section and contains soluble balls; Perforation tools-establish fracturing channels.
2. Open hole sliding sleeve staged fracturing system: differential pressure sliding sleeve-used to establish liquid channel at toe end, providing conditions for pitching and opening sliding sleeve; Sliding sleeve-opening and establishing a fracturing channel leading to the formation, containing corresponding soluble balls; Packer-separate each fracturing section section by section; Hanger-Generally, when running the fracturing string, run it in with drilling tools, and then hang it to trip out. Now, it has developed into a cementing system, and it is not necessary to run the packer.
Of course, there are also some niche staged fracturing tools, such as full-bore cementing switchable sliding sleeve system, multi-cluster cementing ball staged fracturing system and so on.