INTEGRATED APPROACH TO ENHANCE THE PERFORMANCE OF GRAVITY DRAINAGE PROCESSES

摘要

Methods of recovering bitumen from a reservoir are provided herein. The methods include operating a first injector-first producer well pair under a first gravity drainage process to form a first gravity drainage chamber and operating a second injector-second producer well pair under a second gravity drainage process to form a second gravity drainage chamber. An infill well is provided in an unswept region formed between the first gravity drainage chamber and the second gravity drainage chamber and the infill well is operated under a cyclic process utilizing a mobilizing fluid to form a mobilized region of the infill well. The infill well is then operated under a flooding process utilizing a driving fluid to displace bitumen in the mobilized region towards the first and second producer wells of the first injector-first producer well pair and the second injector-second producer well pair. The bitumen is then recovered.