METHOD AND DEVICE FOR PRODUCING WAVE ACTION ON A PRODUCTION STRATUM

摘要

The inventive method for producing a wave action on a productive stratum consists in performing a vibro-seismic action on a bottom-hole zone by a hydraulic shock. Said shock is produced by dropping a column of well fluid (2) to the bottom (9) of a chamber (10) which is fixed to the lower part (3) of a flow string (4) and interacts with the bottom (1) of well. During dropping, the well fluid is accelerated along the length of the chamber (10). The inventive device for producing wave action on a productive stratum comprises a pumping unit, a flow string (4) provided with a perforated expanded section (3), a chamber (10) fixed to the lower end of the flow string (4), a plunger (7) arranged in the chamber (10) in such away that it can move axially and exit therefrom when it is in the top position thereof. Said plunger is connected to the pumping unit with the aid of a rod (8). A channel (11) is embodied in said plunger (7) in such a way that it exits at the end surfaces thereof. The channel is provided with an inverted valve which enables the fluid to flow from the chamber (10) to the perforated expanded section (3) of the flow string (4).