Wells – Processes – With indicating – testing – measuring or locating
Patent
1978-05-10
1979-11-27
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166263, 166272, 166273, E21B 4322, E21B 4323
Patent
active
041756185
ABSTRACT:
Thermal oil recovery processes employing the injection of steam and/or hot water for mobilizing viscous petroleum sweep only a small fraction of the formation between the wells because of override, underride, or channeling resulting in poor vertical conformance, as well as poor horizontal conformance of the swept portion of the formation. Both vertical and horizontal conformance are improved significantly if steam is injected into a formation until channeling has begun, after which steam injection is terminated and an aqueous fluid is injected into the formation, which has a viscosity essentially the same as water and contains an emulsifying agent capable of forming a viscous emulsion in the portions of the formation where override, underride or channeling has occurred. After a small slug of emulsifying fluid has been injected, steam injection is resumed and as a consequence of the emulsion plug, moves into portions of the formation from which oil would not be recovered if the emulsion had not been injected. Multiple cycles of steam and emulsion injection may be applied to a formation to more completely sweep the full volume of the pattern. Surfactants suitable for use include organic sulfonates such as petroleum sulfonate, and solubilizing co-surfactants such as alkyl or alkylarylpolyethoxyalkylene sulfonates.
REFERENCES:
patent: 3208517 (1965-09-01), Binder, Jr. et al.
patent: 3279538 (1966-10-01), Doscher
patent: 3490532 (1970-01-01), Carlin
patent: 3508612 (1970-04-01), Reisberg et al.
patent: 3637018 (1972-01-01), Kelly et al.
patent: 3690376 (1972-09-01), Zwicky et al.
patent: 3731741 (1973-05-01), Palmer et al.
patent: 3811504 (1974-05-01), Flournoy et al.
patent: 3854531 (1974-12-01), Carlin
patent: 4058467 (1977-11-01), Sias
patent: 4077471 (1978-03-01), Shupe et al.
Doscher, "After 10 Years, What's the Score on Use of Steam in Oil Production?", The Oil and Gas Journal, Nov. 22, 1965, pp. 58-61.
Brown Alfred
Hall Wilbur L.
Shupe Russell D.
Wu Ching H.
Novosad Stephen J.
Park Jack H.
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
LandOfFree
High vertical and horizontal conformance thermal oil recovery pr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High vertical and horizontal conformance thermal oil recovery pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High vertical and horizontal conformance thermal oil recovery pr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-798482