Analysis of the Testing Law of Temporary Blocking and Turning Pressure Boosting in the Seam

Temporary plugging and fracturing technology is an efficient fracturing technology for reservoir transformation in recent years. There is a lack of support in determining the width of the main fracture near the wellbore, matching the sealing pressure and fracture width with different temporary plugging materials, and optimizing the construction parameters for temporary plugging turning, which is blind and lacks specificity, and the effectiveness of temporary plugging turning is poor. Considering the sealing performance and compatibility of temporary blocking materials, quantitative analysis was conducted through experimental instruments. The results showed that: (1) the combination of temporary blocking fibers and temporary blocking particles has a better sealing pressure effect than a single temporary blocking material. (2) Select 40-120 mesh small particle temporary blocking material, $7-40 \mathrm{~mm}$ large particle temporary blocking material, and $6-12 \mathrm{~mm}$ temporary blocking fiber. The combination of $0.5 \%$ fiber material, $7.5 \%$ large particle temporary blocking material, and 2.5% small particle temporary blocking material has the strongest pressure bearing capacity, and can withstand pressures of up to 19 MPa.