1974
DOI: 10.2118/3777-pa
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Evaluation of COFCAW as a Tertiary Recovery Method, Sloss Field, Nebraska

Abstract: In this 960-acre project, more than a million barrels of oil was displaced from a previously waterflooded reservoir. Producing rates were as high as 550 BOPD and injected air/water ratios were low. Although COFCAW poses many problems, most of them can be handled, and its great advantage is that the injecting media are the cheapest to be found: air and water. Introduction Purpose Purpose Several years ago Amoco Production Co. began field testing a new oil reco… Show more

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Cited by 24 publications
(13 citation statements)
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“…HPAI has recovered incremental oil in waterflooded fields such as the Sloss field (9) , which shows that HPAI reduces the residual oil saturation below that of water injection. Nevertheless, some people usually argue that the "extra" recovery is due to the flue gases sweeping areas not contacted by the water injected (i.e.…”
Section: Field Evidencementioning
confidence: 93%
See 1 more Smart Citation
“…HPAI has recovered incremental oil in waterflooded fields such as the Sloss field (9) , which shows that HPAI reduces the residual oil saturation below that of water injection. Nevertheless, some people usually argue that the "extra" recovery is due to the flue gases sweeping areas not contacted by the water injected (i.e.…”
Section: Field Evidencementioning
confidence: 93%
“…A number of successful high-pressure air injection projects in light oil reservoirs have been documented in the literature (8)(9)(10) . Most of these projects have been operating for many years, attesting to their technical and economic success.…”
Section: Introductionmentioning
confidence: 99%
“…The first extended field test of HPAI began in 1963 on the Sloss field in Nebraska (Parrish et al 1974a(Parrish et al , 1974b, where Amoco's Combination of Forward Combustion and Waterflooding (COFCAW) process was applied as a tertiary-recovery process to a deep (6,200 ft), thin (11 ft), light-oil (38.8°API), watered-out reservoir. This COFCAW pilot recovered 83,992 bbl of oil, which is equivalent to 43% of the oil left in the five-spot pattern after waterflood.…”
Section: Introductionmentioning
confidence: 99%
“…It is applied as the secondary oil recovery method after the natural drive regime mainly in the carbonate low permeable oil wetting well stratified rocks, where the water flooding for some reasons is inefficient [1][2][3][4][5], as well as the ternary recovery method for highly watered deposits [6,7]. There are a number of successful applications of the in-situ combustion in the light oil bearing formations described in the literature.…”
Section: Introduction the Physical Basismentioning
confidence: 99%
“…The first large project of the air injection into the light oil formation has been realized at the Sloss oil field [8]. One of the largest oil fields, where the HPAI technology is applied, is located in the South Dakota, USA [1][2][3][4][5][9][10].…”
Section: Introduction the Physical Basismentioning
confidence: 99%