TEST BENCH FOR EVALUATION OF OIL AND GAS YIELD OF ROCK SAMPLES Russian patent published in 2010 - IPC E21B49/00 E21C39/00 G01N15/08 

FIELD: oil and gas production.

SUBSTANCE: test bench consists of rigid frame including vertical rods attached to upper and lower cross bars, of case for core sample holder equipped with upper and lower covers, of upper and lower puncheons, ends of which have channels for flow of fluid in axial and radial directions, and of vibration exciter of non-harmonic electro-magnetic oscillations (EMO) of different pulses in each two neighbour time half-period. A working cylinder with a piston is installed inside one of the cross bars. A stop installed between the upper movable puncheon and the piston, a model of analysed oil reservoir (MSOR) and the lower stationary puncheon function as a wave conductor of EMO. The wave conductor is electrically disconnected from the case of the core sample holder. Also the case of the core sample holder includes a circular cavity enveloping the MSOR. A hollow polyhedron is positioned inside the circular cavity on a lower cover of the core sample holder; electric dipoles inserted one into another are arranged on each of internal facets of the polyhedron parallel to vertical axis of the MSOR. The dipoles are connected with an EMO mode unit via electric inputs installed in the lower cover of the core sample holder.

EFFECT: increased oil and gas yield due to generation of additional factor effecting oil ions constituting residual oil in analysed samples.

4 cl, 6 dwg