APPARATUS FOR SEPARATING OF SAND FROM DEPOSIT FLUID IN PRODUCING WELL

FIELD: operation of special-purpose wells, in particular, sandy oil wells and removal of sand from deposit fluid. ^ SUBSTANCE: apparatus has feeding column arranged under deep-well pump or lifting column. Sand pockets are disposed lengthwise of feeding column. Each of sand pockets is defined by inner surface of feeding column, outer surface of bushing arranged inside feeding column, and tie-plate rigidly coupling lower part of bushing outer surface with inner surface of feeding column. Length of each bushing is 0.3-0.75 the distance between tie-plates. Through channel of each bushing is greater than admission channel of deep-well pump, and makes 0.2-0.8 the inner diameter of feeding column. Deposit fluid flow vorticity imparting device is positioned in through channel of each bushing. ^ EFFECT: enhanced reliability in operation of apparatus owing to simplified construction, uniform filling of sand pockets, reduced well non-productive time owing to reduced repair works and reliable cleaning of deposit fluid from sand. ^ 20 cl, 1 dwg