Coal Layer Fracturing Packer
The mechanism of coal seam pressure fracturing is to drive the liquid flow through high pressure, squeezing the liquid flow into the existing and fractured cracks in the coal seam, making these cracks wider and longer, and then generating more secondary cracks and fractures in the coal to increase the permeability of the coal seam.
A new type of coal rock deep hole fracturing packer includes a connecting steel pipe, a driving shell, a protective shell, a driving mechanism, a rotating mechanism, a packer body and a guiding shell. The driving shell and guiding shell are respectively located on both sides of the connecting steel pipe, the driving mechanism is located inside the driving shell, the protective shell is located at both ends of the connecting steel pipe, the rotating mechanism is located inside the protective shell, the rotating mechanism is connected to the driving mechanism, the rotating mechanism is rotationally connected to the connecting steel pipe, the packer body is connected to the rotating mechanism, and the packer body includes an upper packer body and a lower packer body. The upper and lower packer bodies are respectively connected to two sets of rotating mechanisms inside the two sets of protective shells. This utility model relates to the field of coal seam hydraulic fracturing technology. A new type of coal rock deep hole fracturing packer is provided, which can conveniently adjust the distance between the upper and lower packer bodies to meet the needs of different thickness coal seams
Trial aperture: 50mm 75mm 91mm 95mm 110m Design pressure 70mpa
