Sand Blocking Mechanisms and Productivity Analysis of Slant Well in Siltstone Reservoirs

Figure 4

Permeability testing equipment for sand control system in casing. 1—diaphragm pump, 2—safety valve, 3—flow meter, 4—inlet pressure sensor, 5—simulated wellbore, 6—outlet pressure sensor, 7—vibrating screen, 8—collection tank, 9—sand mixing system, 10—servo system, 11—computer data acquisition system, 12—stratum sand, 13—annular space, 14—sealing rubber gasket, 15—diversion net, 16—screen, and 17—support frame.