METHOD FOR DEVELOPING OIL TIGHT DEPOSITS Russian patent published in 2022 - IPC E21B43/26 

FIELD: oil industry.

SUBSTANCE: invention relates to a method for the development of low-permeability oil deposits. The directions of the initial maximum horizontal stresses of the formation are determined. Drilling of horizontal injection and production wells is carried out with in-line placement in parallel through one and the orientation of the shafts in the direction of the maximum horizontal stresses of the formation. Separation of behind-the-casing intervals in production wells is carried out. Hydraulic fracturing is carried out in all injection wells. Injection wells are put into operation with fluid injection at a pressure exceeding the closure pressure of hydraulic fracturing fractures. In producing horizontal wells, the annular intervals are isolated by cementing the liners. Based on the calculation of the stress-strain state in the area of production horizontal wells, the required injection time is estimated from the moment the horizontal injection wells are launched into injection. After reaching the conditions for changing the stress-strain state of the formation in the area of producing horizontal wells, their cemented liners are perforated, hydraulic fracturing is performed, followed by putting them into operation.

EFFECT: reducing the rate of decline in oil production and increasing the final oil recovery factor.

1 cl, 4 dwg