METHOD OF WELL DEVELOPMENT OF OIL RESERVOIR AREA Russian patent published in 2016 - IPC E21B43/20 E21B7/04 

FIELD: oil industry.

SUBSTANCE: invention relates to development of oil reservoirs by means of oil producing and injection wells. Method can be used at oil deposits, where oil production from reservoirs is carried out by oil displacement by uploaded agent, in particular - water. According to the method, a well is built, in which horizontal part of casing string is located directly in the area of oil formation with uniform properties. C-like shape of the well is provided. First and third area of the well casing string have equal length, the required density of perforation holes and parallel to each other arrangement. Second area connects the above sections in single casing string. Space between casing string of the second area and rock of the reservoir is filled with cement mortar. Tubing string or coiled tubing is lowered into the well to the boundary of the second and third areas of casing string. Annular space in boundary zone between the casing string and this string is sealed by packer. Plane-parallel filtration of displacement agent and crude oil is organized by pumping of displacement agent to the reservoir by means of the tubing string or coiled tubing pipes through perforation holes of the end-third of horizontal area of casing string in the area of oil reservoir. Oil extraction from the reservoir is performed through perforation holes of the first horizontal area of casing string with the help of fountain or powered well operation. Oil lifting to the mouth is performed along the ring-annular space of well. For organization of monitoring in real time for pumping of displacement agent and crude oil extraction, the well is equipped with pressure and temperature sensors in zones of the first and third areas of casing string.

EFFECT: technical result is increase of the efficiency of development due to arrangement of plane-parallel filtration of reservoir fluid by means of one well with exclusion of possibility of formation of stagnant zones in the limited area of formation.

1 cl, 1 dwg