Suspension packer for open hole well completion

The invention relates to the technical field of oil and gas filed open hole horizontal well multilayer fracturing, in particular to suspension packer for open hole well completion. The suspension packer comprises a central pipe, an upper guide ring, a tightening pin, an upper slip, an upper cone, a cutting pin, an outer back ring, an inner back ring, an upper rubber sleeve retaining ring, a rubber sleeve bearing ring, a rubber sleeve, an upper rubber sleeve retaining ring, a lower cone, a lower slip, a locking ring, a locking ring sleeve, an upper piston, an 'O'-shaped ring, a split ring sleeve, a split ring, a lower piston, an upper setting sleeve, a lower setting sleeve, a lower guide ring and a lower connector. The suspension packer is mainly applicable to open hole horizontal well multilayer fracturing, is reliable in anchoring performance, high-temperature-resistant and high-pressure-resistant, large-size sleeves can be sealed reliably, and the maximal inner through diameter can guarantee passing of 20 f