WELL INJECTION AND PRODUCTION METHOD AND SYSTEM

摘要

A method and system for enhancing petroleum production are provided, in which petroleum is displaced from a fractured formation by selectively injecting fluid into selected fractures in the formation without injecting into the other non-selected fractures. The injected fluid flows out into the fractured formation and enhances recovery from the non-selected fractures. Petroleum is selectively collected from the non-selected fractures.

主权项

1. A method for petroleum production from a well having a well section with a wellbore inner surface in communication with a plurality of fractures in a formation containing reservoir fluid, the method comprising:
creating a first set and a second set of zones in the well section, each zone for communicating with at least one of the plurality of fractures, and the first set of zones being fluidly sealed from the second set of zones in the well section; and selectively injecting injection fluid into the formation via at least one zone in the first set of zones.