Substantiation of the layout of downhole and wellhead equipment with simultaneously separate production and gas injection to enhance oil recovery of low-permeability reservoirs
UDC: [622.276.5 + 628.112.2]"72"
DOI: 10.33285/0207-2351-2022-4(640)-31-36
Authors:
PYATIBRATOV PETR V.
1,
IGREVSKY LEONID V.1
1 National University of Oil and Gas "Gubkin University", Moscow, Russia
Keywords: enhanced oil recovery, gas methods, associated petroleum gas, simultaneously separate production and injection, oil well, gas well, low-permeability reservoir, Achimov deposits
Annotation:
The use of effective methods of enhanced oil recovery for deep-seated low-permeability reservoirs, such as gas, is associated with high capital expenses for gas compression, drilling of gas injection wells and additional surface constructions. For the case of the development of an oil reservoir that intersects in plan with a gas or gas condensate reservoir, these costs can be significantly reduced by using the gas of the overlying gas reservoir as an injected agent. A proposed solution is using the layout of downhole and wellhead equipment, which provides the possibility of oil production during the development of the underlying oil reservoir in a natural mode with simultaneously separate gas production from the overlying gas reservoir and its injection into the oil reservoir to displace oil and maintain reservoir pressure.
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