Single-well desanding device and sand discharging technology thereof

Abstract

The invention discloses a single-well desanding device and a sand discharging technology thereof.Due to the fact that a novel gas-liquid-sand three-phase separation device is provided, sand in the shale gas discharging and mining process can be effectively collected, and maintenance is convenient; by means of the sand discharging technology of the device, opening and closing of different main roads and branch roads can be switched by switching valves, precise separation of gas and liquid can be achieved, and sand discharging and desanding can be conducted without shutdown.By means of the single-well desanding device and the sand discharging technology thereof, the discharging and mining efficiency of shale gas is effectively improved, energy consumed by the sand discharging process is reduced, and great economic benefit is brought.

Description

technical field [0001] The invention relates to a production device of a cluster well station for shale gas exploitation, in particular to a cluster well desanding device and a desanding process thereof. Background technique [0002] Shale gas refers to a very important unconventional natural gas resource that exists in organic-rich mud shale and its interlayers in the state of adsorption or free. Due to the characteristics of low output and rapid pressure decline in the later period, a large amount of sediment will be generated during the extraction and drainage of shale gas. Although the gas-liquid-sand three-phase separation of the shale gas produced through the separator will be required However, during the long-term production and drainage process, for example, a large amount of sand will accumulate in the three-phase separator. When there is too much sand, there may be sand mixed in the liquid, which will cause pipeline blockage and cause Economic loss, and if shale g...

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Problems solved by technology

[0002] Shale gas refers to a very important unconventional natural gas resource that exists in organic-rich mud shale and its interlayers in the state of adsorption or free. Due to the characteristics of low output and rapid pressure decline in the later period, a large amount of sediment will be generated during the extraction and drainage of shale gas. Although the gas-liquid-sand three-phase separation of the shale gas produced through the separator will be required However, during the long-term production and drainage process, for example, a large amount of sand will accumulate in the three-phase separator. When there is too much sand, there may be sand mixed in the liquid, which will cause pipeline blockage and cause Economic loss, and if shale gas is mixed in the sand discharge process, it will also cause safety hazards

However, manual sand cleaning requires downtime for maintenance, which not only wastes a lot of manpower and material resources, but also shuts down production and production, causing a lot of losses

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