DEVICE FOR CLEANING OF WELLS FILLED WITH FLUID

摘要

FIELD: devices for cleaning of oil and gas wells from various deposits. SUBSTANCE: device has working chamber with supporting bushing, stepped piston, means for freeing of stepped piston and movable sleeve. Working chamber is suspended from rope through geophysical cap and located on body other end. Stepped piston is located inside chamber lower part. Device has limiting bushing, hinged plug and diffuser. Stepped piston has clearance with working chamber body and plug. Movable sleeve rests on limiting bushing. Hinged plug is located in movable sleeve. Means for freeing of stepped piston is made in form of diffuser, stop nut and deformed washer which holds stepped piston with respect to working chamber. EFFECT: higher efficiency of well cleaning simplified design of device. 2 dwg