METHOD AND DEVICE TO APPLY VIBRATOR SEISMIC ACTION TO OIL POOL Russian patent published in 2005 - IPC

FIELD: oil production, particularly vibration generating arrangements for boreholes or wells for stimulating production.

SUBSTANCE: method involves applying impacts to oil reservoir by falling bottomhole tool simultaneously with oil recovery from stimulating well. Bottomhole tool lifting is performed when recovered product flow pressure in area between lifting device and anvil is less than bubble-point pressure. Gas-and liquid mixture is extracted after lifting device by immersed pump with gas separator or by immersed pump-ejector system including immersed pump, gas separator and jet device with check valve installed at inlet thereof or by water-jet pump with check valve at inlet thereof or by gas-lift assembly.

EFFECT: increased efficiency due to increased speed of bottomhole tool falling, increased frequency and power of impacts applied to oil reservoir.

15 cl, 6 dwg