FIELD: oil and gas industry.
SUBSTANCE: proposed device includes pressure differentiator and sand trap, which are arranged above borehole pump. Sand trap is installed on tie-rod hanger under pressure differentiator. Sand trap has outer diameter of smaller size of inner surface of receiving column and bigger size of diameter of pressure differentiator. Zone of decreased pressure is created with the pressure differentiator at the pump operation, and sand particles are deposited in the trap.
EFFECT: improving operating reliability of the device due to its simplification, and increasing periods between repairs of well with reliable cleaning of formation fluid from sand.
1 dwg
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