Ncs Multistage Inc.

Petroleum Recovery Institute

Jerry Chin Shaw

Conrad Ayasse

Warren Foster Peter MacPhail

Raymond Tsuen

Warren Foster Macphail

Warren Foster Peter Macphail

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.

Well injection and production method and system

The process involves a well stimulation treatment of a hydrocarbon reservoir containing solid pyrobitumen. A strong oxidant, preferably sodium hypochlorite, is injected into the reservoir as an aqueous solution containing 5 wt. % or higher concentration of the oxidant. The oxidant is retained in contact with the formation for a predetermined retention period and the well is then backflowed or pumped to remove oxidation products. The permeability of the reservoir is improved, apparently by conversion of the solid pyrobitumen to removable gaseous and liquid products.

Process for chemically treating reservoir pyrobitumen to improve

Growing community of inventors

Calgary, Canada

Jerry Chin Shaw