Desanding device for shale gas exploitation

Abstract

The invention discloses a desanding device for shale gas exploitation. The desanding device comprises a bearing box, a desanding box, a motor carrier disc, a feeding pipe and a sand filtering mechanism; the bearing box and the desanding box are both constructed to be cylindrical; the bearing box and the desanding box are matched in an inserted connection mode; and a set of reverse butt joint conical hoppers coaxial with the bearing box are constructed in the bearing box; the bearing box is divided into an upper drainage bin and a lower sand discharging bin through the reverse butt joint conical hoppers; the desanding box is installed above the bearing box; a feeding bin is formed above the desanding box; a funnel-shaped separation bin is formed below the desanding box; and the funnel-shaped separation bin is communicated with the feeding bin and the drainage bin of the bearing box; the motor carrier disc is installed on the top of the desanding box and seals the feeding bin; a set of grooves for installation of a first driving motor is formed in the upper end of the motor carrier disc; and a set of auger feeding rods are arranged at the bottom end of the first driving motor. The desanding device for shale gas exploitation is reasonable in structure, easily achieves desanding work of fracturing fluid, reduces the workload of follow-up equipment and is recommended to be widely used.

Description

technical field [0001] The invention belongs to the technical field of mining equipment, and in particular relates to a sand removal device for shale gas development. Background technique [0002] Shale gas refers to organic matter-rich, mature dark mud shale or high-carbon mud shale, which has a certain commercial value due to the adsorption of organic matter or the existence of fractures and matrix pores in the rock, so that it is stored and preserved. , pyrolysis and natural gas of mixed origin. Shale gas is unconventional natural gas that occurs in reservoir rock series dominated by organic-rich shale. It is a continuously generated biochemical gas, thermogenic gas or a mixture of the two. It can exist in natural cracks and pores in a free state, exist in kerogen and clay particle surfaces in an adsorbed state, and store a very small amount in cheese in a dissolved state. In roots and asphaltene, the proportion of free gas is generally 20% to 85%. Shale gas drilling a...

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Problems solved by technology

[0003] Shale gas mining generally adopts hydraulic fracturing, and the shale gas extracted from the well site generally includes three phases of gas, liquid and sand, and the solid impurities in it cannot be effectively and completely removed by the desander in the existing technology center , and then make the solid impurities contained in the shale gas settle in the separator, cause the clogging of the separator drainage pipeline, and cause serious erosion to the valve, thus causing potential safety hazards. Therefore, there is an urgent need in this field for a A separation device that solves the above-mentioned problems

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