METHOD FOR EXPLOITING OIL DEPOSITS Russian patent published in 2004 - IPC

FIELD: oil extracting industry. SUBSTANCE: method includes drilling deposit with extracting and force-pump wells and perforation of productive layer in extracting wells during two main steps. First step is pumping water through force-pump wells, second step is extracting oil from through extracting wells. In accordance with a table of extracting wells locations location of extracting wells pit-faces is determined in the area of local domical rise or local valley. During first step in case of extracting well pit-face located in local valley area perforation of extracting well is performed in range of sole portion of productive layer. In case of extracting well pit-face located in local valley area perforation of extracting well is performed at whole range of productive layer thickness. During second step, perforation of roof portion of productive layer is performed in extracting wells in the area of local valley in case of water amount of 50% and higher. In extracting wells located in the area of local domical rise, sole portion of productive layer is isolated. EFFECT: increased period of waterless oil extraction and increased current coefficient of oil extraction. 1 ex, 1 dwg