DEVICE FOR PROCESSING BEDS IN A WELL Russian patent published in 2006 - IPC E21B33/12 

FIELD: oil and gas industry, namely, engineering of devices for dividing beds in well during separate injection of various reagents into them.

SUBSTANCE: device contains packer, including connecting body and elastic collar, divider, including shaft provided with radial channels, valve, installed in shaft and connected to it by shear elements. Valve is equipped with saddle on top for ball, dropped into device prior to processing of second bed and conical groove, made in lower part of shaft. Device at a distance above the packer, exceeding thickness of upper bed, is provided with additional packer, consisting of additional elastic collar, positioned between stop of divider at lower part and cylinder at upper part. Shaft of divider is provided with piston on top, which is telescopically mounted with possible axial movement upwards into cylinder, forming a hollow together with piston, connected hydraulically to internal space of tubing pipes column by through apertures, which are hermetically sealed by valve before drop of ball. Cylinder is made with possible interaction with additional elastic collar.

EFFECT: it is possible to process two beds during one run of equipment into well without risking violation of operation column integrity.

3 dwg