Design and performance experiment of staged fracturing degradable bridge plug for horizontal well

With the gradual transformation of oil and gas exploration and development objects to low-permeability and low-grade resources, horizontal well staged fracturing technology has become an important means for reservoir reconstruction and effective improvement of single well production. As an important downhole layered plugging tool for staged fracturing of horizontal wells, bridge plugs are increasingly widely used. In this paper, firstly, the structure of the degradable bridge plug is designed according to the design principles and working conditions, and the technical parameters of the main body of the bridge plug are determined. Secondly, the performance of the sealing and anchoring structure is analysed, as well as the hydrodynamic performance analysis of the influence of the water flow on the bridge plug. Thirdly, a test prototype of the degradable bridge plug is manufactured according to the engineering drawings and material selection requirements. Finally, the pressure-bearing performance of the designed degradable bridge plug is tested by the prototype test, which provides a theoretical basis for future field applications.