METHOD OF OIL-POOL DEVELOPMENT Russian patent published in 2008 - IPC E21B43/18 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry and can be used at development of an oil-pool operated under a natural reservoir drive. Increased efficiency of implementation of this method is achieved due to a generation of residual reserves of oil in an oil-pool. The essence of the invention is as follows: the method includes withdrawal of oil via producing, branched in a horizontal plane, curvilinear wells on a natural drive. At that oil withdrawal is carried out with cyclic shut down and engagement of all producing wells. When wells are engaged oil withdrawal is performed up to a reduction of the current bed pressure to 60-80% from the initial, and shut down is carried out till recovery of the current bed pressure reaches 70-90% from the initial. In the process of oil-pool generation producing wells which do not recover the current bed pressure to 70% from the initial are successively transferred into pressure wells operating under cyclic mode. At that the time of fluid pumping into a pressure well constitutes a medium duration of oil withdrawal out of the nearest to it producing wells, while the duration of a pressure well operation is equal to a medium time of shut down of the nearest to it producing wells.

EFFECT: upgraded efficiency of oil well development.

1 ex, 2 dwg