MULTI-STAGE MULTI-CLUSTER FRACTURING INTELLIGENT SLIDING SLEEVE SYSTEM AND METHOD BASED ON INTELLIGENT KEY TAG

A multi-stage multi-cluster fracturing intelligent sliding sleeve system based on an intelligent key tag. The system comprises at least one multi-cluster sliding sleeve correspondingly placed in each fracturing stage, an end sliding sleeve placed at the end of each fracturing stage, and an intelligent tag pumped to a target fracturing stage by means of a pump. Further disclosed is a method for the multi-stage multi-cluster fracturing intelligent sliding sleeve system based on the intelligent key tag, which comprises: step one, utilizing a stage-by-stage means of fracturing from a first stage to a final stage, placing an intelligent key tag in a wellhead, and pumping the intelligent key tag to a target fracturing stage; step two, opening in a one-by-one fashion each multi-cluster sliding sleeve of a current fracturing stage by the intelligent key tag, and ultimately blocking said tag in an end sliding sleeve, thereby completing opening of all of the multi-cluster sliding sleeves and the end sliding sleeve of t