METHOD FOR INTENSIFYING THE PRODUCTION OF RESERVOIR PRODUCTS WITH BOTTOM WATER (OPTIONS) Russian patent published in 2022 - IPC E21B43/16 

FIELD: intensifying methods.

SUBSTANCE: invention relates to methods for intensifying the production of formation products with bottom water. The method for intensifying the production of formation production with bottom water includes the construction of a well with casing string cementing. Conduct a secondary opening of the casing against the productive zone in the upper part, followed by determination of reservoir pressures. An opening of the lower part is carried out opposite the aquifer of the formation. The perforation intervals of the productive and aquifer zones are separated by installing a packer in the production string. The tubing strings are lowered with a pump located above the packer. An additional string of pipes is lowered until its lower part is hermetically fixed in the packer. Formation fluids inflow is called and oil is produced by a pump through a column of lift pipes from a well at drawdown on the productive zone of the formation. Process fluid is pumped into the aquifer through an additional pipe string. A well in a productive formation is built inclined, descending to the bottom, with a zenith angle of the well, providing a distance between openings in the upper and lower parts, which excludes the flow of process fluid between them. As a process fluid, a displacing agent is chosen that is chemically neutral to water and formation products, which eliminates formation clogging. The volume of the displacing agent and the modes of its injection are determined from the condition of maintaining reservoir pressure, which ensures maximum oil recovery from the reservoir.

EFFECT: intensification of production of bottom water reservoir products, including reservoirs with thicknesses less than 50 meters.

3 cl, 2 dwg