DEVICE OF VIBROSEIS IMPACT ON OIL-AND-GAS DEPOSIT Russian patent published in 2011 - IPC E21B28/00 E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry, and namely to devices for vibroseis impact on oil deposits. Formation is opened with wells and formation fluid is developed with production wells. Device of vibroseis impact on oil formation is installed in the section of oil deposit. Device includes installation of waveguide device in excitation well from the existing fund or specially drilled one, and its conjugation with ground vibration source of vibrating type with controlled value of vibration frequency and amplitude of pushing force. Device includes ground vibration source of vibrating type, which consists of drive, includes piston, piston-rod, crankshaft, flywheel, asynchronous electric motor and vibration exciter rigidly connected to supporting pipe, centred relative to well head the radiating element of which is connected through attached mass to elastic waveguide connected to quarter-wave radiator by means of lower edge installed on rigid connection device with casing pipe walls. When vibration source is actuated, drive has the possibility of controlling the fluid flows supplied to vibration exciter and bringing its radiating element into vibratory motion. Radiating element transmits vibrations to attached mass, which provides wave propagation through waveguide to quarter-wave radiator rigidly connected to casing pipe walls, and then to oil formation.

EFFECT: improving final oil recovery owing to recovery of movability of trapped oil and enlarging the coverage zone of vibroseis impact at optimisation of its modes.

7 cl, 1 dwg