METHOD FOR EXTRACTION OF HYDROCARBON RAW MATERIALS FROM MULTI-LAYER FIELDS Russian patent published in 2021 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the field of the oil and gas industry and can be used in the development of multi-layer hydrocarbon fields. The method for developing multi-layer gas fields includes the construction of well clusters of several vertical, inclined-directional and horizontal wells for different layers of the field. At the same time, wells operating different layers of development have a different spatial profile, gas flow control devices are installed at the wellheads, wells are connected to a single pipeline network and field development begins with the exploitation of lower gas reservoirs with a higher initial reservoir pressure. Upstream reservoirs are included in the development when the current wellhead pressure of wells draining the lower reservoirs decreases to the initial wellhead pressure, and if necessary, by increasing the flow section in the control devices, the gas flow in the wells of formations with higher reservoir pressure is increased without a long wait for a decrease in reservoir pressure in these formations.

EFFECT: invention allows increasing the recovery coefficient of reserves and increasing gas production while simultaneously operating wells with a lower reservoir pressure of formations.

1 cl, 2 dwg