关键词: 连续油管, 分段压裂, 喷砂射孔, 临兴区块, 致密气

Abstract: Based on the analysis of the fracture mode of open-hole packer sliding sleeve which is used in horizontal wells， it is believed that this operation mode restricts the operation of horizontal wells in the later stage. Thus，the operation mode of using coiled tubing to drag fracturing was put forward. Through fracturing string design， fracture parameter optimization，and displacement optimization，the operation of positioning and setting，perforation，and fracturing of a single string was realized，which greatly improved the efficiency of field operation. The successful implementation of this new process in the six horizontal wells in the Linxing field illustrates that the coiled tubing jet perforation separated fracturing through annulus technology is applicable to tight gas reservoirs，providing a new and effective mean for the field.

Key words: coiled tubing, separated fracturing, sand jet perforation, Linxing field, tight gas