METHOD FOR FULL EXTRACTION OF PRODUCTIVE FORMATIONS OF OIL AND GAS DEPOSITS Russian patent published in 2007 - IPC E21B43/20 E21B43/26 

FIELD: oil formation physics, and also hydro-mechanics and experimental physics, possible use during research of movement of multi-phase and multi-component liquids through porous substances.

SUBSTANCE: method includes hydro-disruption of formation and production of productive isolines. Wells are constructed with cementation of their annulus intervals, performing of pickup profile and influx research cycles in force and product wells in original product isolines. When water front of first productive isolines reaches perforation interval zone of one of product wells as a result of measurements of differential and integration profiles of pickups and influxes, geometric parameters of final unproductive section are determined. The latter is cemented to produce new section of first productive isolines with further operations of research and cementation performed until full extraction of formation. In accordance to invention, after launch of deposit firstly determined are amounts and lengths of direct and crossed inter-well isolines in linear filtration mode. When water front reaches half of inter-well distances, geometric parameters of unproductive sections are determined in straight direction. When water front arrives at productive well zones, research and cementation of unproductive sections are performed near their perforation zones under heightened pressures. With isolation of sections in reverse direction, pressures of their research and cementation are decreased. Time intervals of tracking marks of various origins are determined with their consumption. First sections of first isolines are isolated under pressure close to hydro-disruption pressure, while remaining ones - in discontinuous proportions of decreasing pressures, approaching the maximum of pressure of operation of beds and/or seams.

EFFECT: increased precision and expanded functional capabilities of disclosed object, and therefore, more full extraction of oil and gas deposits.

1 ex, 3 dwg