DEVELOPMENT METHOD OF OIL DEPOSIT WITH HORIZONTAL WELLS Russian patent published in 2013 - IPC E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: method involves construction of horizontal production wells enclosing the deposit and horizontal injection wells, injection of displacement agent through injection wells and product extraction with production wells. According to the invention, horizontal production wells are arranged parallel to each other. Uprising branches to the formation roof are subsequently drilled from horizontal sections to opposite sides in more permeable sections. Horizontal injection well, the injection in which is started from the face, is arranged between horizontal sections and parallel to horizontal sections. When intake capacity of manifolds is decreased at the mine face of horizontal injection well to maximum profitable level, non-operating section of horizontal shaft is isolated in series in the direction from the mine face to the beginning of horizontal shaft of injection well.

EFFECT: increasing oil extraction; enlarging the application of horizontal wells with uprising branches under various deposit development conditions.

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