E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/39
E21B 43/24 (2006.01) E21B 43/30 (2006.01)
Patent
CA 1304287
"STEAMING PROCESS, INVOLVING A PAIR OF HORIZONTAL WELLS, FOR USE IN HEAVY OIL RESERVOIR" ABSTRACT OF THE DISCLOSURE A pair of horizontal parallel co-extensive wells, one spaced closely above the other, are completed so that they extend through a heavy oil reservoir in close proximity to its base. The upper well is referred to as the injector and the lower a the producer. Each well has a screened liner and an inner tubing string extending the length of the well. Steam is circulated separately through each of the wells to heat by conduction the span of formation extending between the wells and establish fluid communication between them. The circulation is conducted in through the tubing and out through the annulus at an elevated pressure that is less than fracture pressure. The rate of production of effluent from each well is controlled to maintain its temperature just below saturated steam temperature. Once communication is established, steam circulation in the producer is discontinued and the well is produced through the tubing. Steam is then injected through both the annulus and tubing of the injector. Condensate and oil are produced through the lower well. Steam-assisted gravity drainage is the mechanism thereafter used to heat the reservoir and produce the oil. Production rate is controlled to maintain the temperature and pressure of the produced fluid just below saturated steam conditions.
604268
Cordell Gilbert M.
Edmunds Neil Roger
Haston John A.
Alberta Science And Research Authority
Johnson Ernest Peter
LandOfFree
Steaming process, involving a pair of horizontal wells, for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steaming process, involving a pair of horizontal wells, for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steaming process, involving a pair of horizontal wells, for... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1218520