Patent ID: 11927084
Assignee: CENOVUS ENERGY INC.
Field: Civil engineering (Other fields)
Classification: CPC E  C | IPC C  E

Claim 0:
1. A method for producing hydrocarbons from a subterranean reservoir, the method comprising:
penetrating the subterranean reservoir with a plurality of well pairs laterally displaced across a well pad in an array, the plurality of well pairs comprising at least one steam-dominant well pair and at least one solvent-dominant well pair;
operating the at least one steam-dominant well pair and the at least one solvent-dominant well pair under a first set of conditions that induce a localized solvent-concentration gradient in proximity to the at least one solvent-dominant well pair and a localized temperature gradient in proximity to the at least one steam-dominant well pair, within the subterranean reservoir by injecting a steam-dominant injectant through the at least one steam-dominant well pair and a solvent-dominant injectant through the at least one solvent-dominant well pair;
determining at least one additional well pair of the plurality of well pairs that is heat-depleted and/or solvent-lean; and
subsequently operating the at least one steam-dominant well pair when the at least one additional well pair is heat-depleted and/or the at least one solvent-dominant well pair when the at least one additional well pair is solvent-lean under a second set of conditions that delocalizes the solvent-concentration gradient from the at least one solvent-dominant well pair and/or the temperature gradient from the at least one steam-dominant well pair, as the case may be, toward the at least one additional well pair by modifying inter-well pressure differentials between the at least one additional well pair and the at least one steam-dominant well pair and/or the at least one solvent-dominant well pair to enhance hydrocarbon production at the at least one additional well pair.