METHOD OF DEVELOPING OIL DEPOSIT DEVELOPMENT, WITH UNDERLYING WATER Russian patent published in 2016 - IPC E21B43/20 E21B43/32 E21B43/11 

FIELD: oil and gas industry.

SUBSTANCE: invention can be used in construction and operation of horizontal producers at oil deposits with bottom water. Method involves pumping a working agent through injection wells. Formation product is extracted through production wells. Method comprises construction of horizontal bores of oil well in one vertical plane and extraction of product through horizontal boreholes. Construction of first horizontal bore is made in oil-saturated formation near oil-water contact. Second horizontal bore is constructed in upper part of oil-saturated formation with length, smaller than length of first horizontal bore. First horizontal bore is perforated in horizontal plane. Method includes pumping into first horizontal bore a water-insulating material with density greater than density of oil and less than density of formation water and creating a barrier for formation water flow in contact with formation water. Method includes simultaneously injecting into second horizontal bore of oil with same pressure and flow rate at which water-insulating material is injected before setting of water-insulating material. Pumping is stopped and process exposure is performed. Oil is extracted through second horizontal wellhole.

EFFECT: reducing volume of produced associated water, reducing water cut of extracted products.

1 cl, 3 ex