Sand-containing gas sand collecting device in gas well sand production and sand control simulation experiment

Abstract

The invention relates to a sand-containing gas sand collecting device in a gas well sand production and sand control simulation experiment. The sand collecting device can reasonably catch and collect a sand sample in sand-containing gas in an experiment process and can directly sort in accordance with meshes as required and measure gas flow simultaneously; the sand collecting device is characterized in that the upper part of the sand collecting device is of a cylindrical structure and the lower part of the sand collecting device is in the shape of an inverted conical body; from top to bottom, the sand collecting device is sequentially provided with a flow meter, an upper-bottom gland, an atomizing nozzle, a gas inlet, an inspection window and a multi-stage sand sample sorting device; the flow meter comprises a filter element and is capable of monitoring gas flow after sand is removed from gas; the upper-bottom gland is fixedly connected to the sidewall of the sand collecting device by virtue of a bolt and is provided with a seal gasket; the atomizing nozzle is arranged above the gas inlet; by virtue of water mist sprayed from the atomizing nozzle, residual sand in the gas can be caught; the inspection window can be used for monitoring change in water level in real time; and the multi-stage sand sample sorting device is located at the lowest side of a tank body and is used for immediately sorting the sand sample according to a requirement on meshes, so as to save time.

Description

technical field [0001] The patent of the invention belongs to the field of oil and natural gas sand control, and specifically relates to a sand collection device for sand-containing gas in a gas well sand control simulation experiment. Background technique [0002] Sand production in oil and gas wells is one of the important problems encountered in oil exploitation, especially in gas wells. If the sand damage is not controlled, the sand production of gas wells will become more and more serious, resulting in the failure of effective development of sand production gas wells. The hazards of sand production are mainly manifested in three aspects: production reduction or shutdown operations, surface and downhole equipment abrasion, casing damage and oil well scrapping. The sand control of gas wells is particularly important. Mechanical sand control is currently the most commonly used sand control method, and the key to mechanical sand control is to choose a reasonable sand contr...

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Problems solved by technology

[0003] (1) Although a part of the sand body can be collected, the gas will generate bubbles and be discharged after entering the water body, resulting in the small-grained sand body being discharged with the bubbles and unable to be absorbed and cap

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