FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil industry and can be used for fluid production from the boreholes equipped with sucker-rod pumps. According to method sand leakage process from payout bed is estimated depending on bottomhole zone and casing annulus pressure. According to the invention constant velocity of formation fluid inflow is provided due to levelling pressure of sucker-rod pump, transmitted to bottomhole zone through borehole liquid. The device includes receiving column mounted under sucker-rod pump suction, by length of which blisters are installed. Each blister is formed by internal surface of receiving column and bridge with pass. Blisters accommodate elastic sealed gas-expanded containers.
EFFECT: reduction of sand leakage process from payout bed to the borehole without applying auxiliary filters, permeable barriers and sand blisters.
2 cl, 1 dwg
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