METHOD FOR OPTIMIZING OIL EXTRACTION Russian patent published in 2004 - IPC

FIELD: oil layer physics.

SUBSTANCE: method includes hydraulic fracturing of layer in direction from force-pumping to extracting wells and forming of productive isolines. Wells construction and equipment installation are performed with cementation of their behind-column ranges, completion of research cycles of both acceleration profiles and influx in force-pumping and extracting wells. This is performed with determination of critical values of water cutting and of values of current conductivities in starting productive isolines. According to invention in case of reaching front of water cutting of first productive isoline up to area of perforation range area of one of extracting wells as a result of measurements of differential and integral profiles of influx and accelerations, geometric parameters of end exhausted portion are determined. Its cementation for forming new portion of first productive isoline is performed. Geometric parameters of another exhausted portion are examined in opposite direction from extracting to force-pumping wells. Cementation of exhausted portions is continued up to full extraction of first isolines and forming of second productive isolines. Extraction and cementation of different productive isolines is continued up to full exhaustion of layer.

EFFECT: higher precision and wider functional capabilities of the method.

6 cl, 1 ex, 3 dwg