초록 ▼

The present invention provides a system and method for producing an effluent contained in a geological formation forming a reservoir for said effluent or producing formation, including a central well, at least one subhorizontal drain as well as a displacing or displacement agent, the displacement ag

The present invention provides a system and method for producing an effluent contained in a geological formation forming a reservoir for said effluent or producing formation, including a central well, at least one subhorizontal drain as well as a displacing or displacement agent, the displacement agent being injected into the formation either from the central well or from the subhorizontal drain and the displacement agent causes migration of the effluent to be produced.

대표청구항 ▼

A method for producing a viscous oil effluent contained in a geological formation providing a producing formation and forming a reservoir for said effluent, said geological formation overlying another geological formation at least substantially impermeable to said effluent to define an interface bet

A method for producing a viscous oil effluent contained in a geological formation providing a producing formation and forming a reservoir for said effluent, said geological formation overlying another geological formation at least substantially impermeable to said effluent to define an interface between said geological formations, the interface between the geological formations comprising a wall of the reservoir, which comprises: providing a central well extending from the surface into said producing formation; drilling at least one subhorizontal well from the surface to pass through said producing formation and into said impermeable formation; joining an end portion of said at least one subhorizontal well to said central well; and injecting a displacement agent into said producing formation via said at least one subhorizontal well serving as a production simulation well; said displacement agent causing migration of the effluent from the producing formation into said central well. A system for producing an effluent contained in a geological formation including a central well and subhorizontal wells, said central well having a perforated zone at a level of said geological formation, an injection pipe connecting said perforated zone to a source for injecting a displacement agent into said perforated zone; said subhorizontal wells each extending from the surface into and through said geological formation, and each of said subhorizontal wells having a length so as to enter the geological formation at a distance far from an axis of said central well and terminate at a distance near the axis of said central well, a portion of each subhorizontal well within the geological formation having a perforated zone whereby said displacement agent causes migration of the effluent from the geological formation into said subhorizontal wells.