Patent ID: 8978755
Filing Date: 2015-03-17
Classification: E21B

Abstract:
1. A method of producing hydrocarbon from a subsurface formation comprising: a) forming a gravity drainage production well pair within a formation comprising an injection well and a production well; b) beginning a pre-soaking stage by soaking at least one of the wells of the well pair with an added solvent to generate at least one soaked well, wherein the added solvent does not include water; c) beginning a pre-heating stage by heating said at least one soaked well with a radio frequency device, capable of emitting radio frequencies (RF), to produce a solvent vapor, wherein the radio frequencies emitted from the radio frequency device are optimized to heat the solvent; d) beginning a squeezing stage by continuing to heat with RF until vapor pressure increases sufficiently to squeeze said at least one soaked well to introduce convection heating to the formation; and e) beginning a gravity drainage production of a hydrocarbon.