ELECTROHYDRAULIC IMPULSE DEVICE (VARIANTS) Russian patent published in 2006 - IPC E21B43/25 

FIELD: oil production, particularly methods for stimulating production, namely current pulse generators for electrohydraulic impact shaping devices used in different industries.

SUBSTANCE: device comprises electric accumulator, triggering means and discharge chamber provided with electrodes. Discharge chamber interior is isolated from ambient space so that one wall thereof is opened in hydraulic medium to be treated. At least one electrode is arranged near wall opposite to opened wall. The second electrode is spaced short distance from the first one or discharge chamber wall or hydraulic medium are used as the second electrode. Vertical inner dimension of discharge chamber is selected to prevent direct contact between electrode and hydraulic medium to be treated. Inner discharge chamber volume is small enough to provide cumulative effect of electrodischarge pulse.

EFFECT: improves efficiency of oil-bearing formation treatment due to increased energy generated between discharge device electrodes, decreased environment parameters influence on discharge mode along with simplified electrohydraulic impulse devices usage.

4 cl, 12 dwg, 1 tbl