Automatic lifting dry-wet screening device and method for polymeric proppants

Abstract

The invention belongs to the technical field of oil extraction engineering, and discloses an automatic lifting dry-wet screening device for polymeric proppants. The device comprises a shell, a supporting frame, vibrating screens, water spraying belts, a lifting assembly, a water supply assembly, a drying assembly and a control system, wherein the supporting frame is arranged in the shell through an elastic assembly, a vibrator is arranged on the supporting frame, a spraying head is arranged at the top of the supporting frame, a plurality of sets of vibrating screens are arranged in the supporting frame in a stacked mode, the screen mesh hole diameters of the plurality of sets of vibrating screens are sequentially decreased from top to bottom, a water spraying belt is arranged between everytwo adjacent vibrating screens, the water supply assembly is used for supplying water to the spraying head and the water spraying belts, and the drying assembly is used for drying the screened proppants. The invention further discloses an automatic lifting dry-wet screening method for the polymeric proppants. According to the device, the particle size distribution of the particles with the strongelectrostatic reaction can be accurately measured, and screening evaluation experiment research can be carried out on the particles with the strong electrostatic reaction.

Description

technical field [0001] The invention belongs to the technical field of oil recovery engineering, and in particular relates to an automatic lifting dry-wet screening device and method for polymer proppant. Background technique [0002] In the field of oilfield fracturing, in order to ensure the effect of fracturing, it is necessary to conduct screening analysis and evaluation experiments on proppant or polymeric proppant for fracturing. Polymerized proppants are spherical particles with smooth appearance formed by polystyrene through polymerization reaction. In a dry environment, they will have a strong electrostatic reaction with the metal surface and adhere to the metal surface. The instruments currently inquired are all dry sieves. The extension machine, and the screen mesh is made of stainless steel metal, so it is impossible to accurately characterize the overall sieve analysis distribution of the polymeric proppant. Contents of the invention [0003] The purpose of t...

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Problems solved by technology

Polymerized proppants are spherical particles with smooth appearance formed by polystyrene through polymerization reaction. In a dry environment, they will have a strong electrostatic reaction with the metal surface and adhere to the metal surface. The instruments currently inquired are all dry sieves. extension, and the screen is made of stainless steel, so it is impossible to accurately characterize the overall sieve analysis distribution of polymeric proppants

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