Device and method for detecting sanding critical flow velocity of gas well
A critical flow velocity and gas well technology, applied in the direction of measuring fluid velocity by using pressure difference, measuring device, using swirl flowmeter to measure fluid velocity, etc., can solve the problem of no filter device at the outlet, reaching the critical flow velocity of sand production, and poor representation. question
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[0023] 1) According to figure 1 As shown in the schematic diagram, connect the axial pressurization system, gas supply system, simulation system, measurement and collection system, sand treatment system, and check the tightness of each component and pipeline;
[0024] 2) Place the first rubber gasket 307 on the end face of the full-diameter rock core 308 without holes, and then use the self-adhesive sealing tape 306 to seal the upper pressure head of the full-diameter rock core 308, the first rubber gasket 307 and the core holder 305; The end face of the opening of the rock core 308 is placed with a second rubber gasket 310 with holes. The hole diameter of the second rubber gasket 310 is equal to or slightly larger than that of the hole 309 in the rock core. Afterwards, the self-adhesive sealing tape 306 is used to seal the full-diameter rock core 308 and the second rubber seal. The pad 310 and the core holder 305 press the head; the following table 1 shows the full-diameter c...
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