CO2 injection in Buracica — Long-term performance assessment

Estublier, Audrey; Dino, Rodolfo; Schinelli, Marco; Barroux, C.; Beltran, Alvaro Munoz

doi:10.1016/j.egypro.2011.02.344

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…The samples of production water were collected at an onshore oil field located in the western part of the Reco ˆncavo Basin (Bahia, Brazil) [15]. This field is composed of three main tilted blocks, separated by faults.…”

Section: Oil Field Water Samplingmentioning

confidence: 99%

“…The reservoir has an average porosity of about 22 % and an average initial water saturation of about 24 %, and its permeability ranges from 150 to 900 millidarcies. The reservoir temperature is on average 44 °C, the initial pressure is 55 bar, the oil gravity is 358API, and the oil viscosity ranges from 2 to 10 centipoises for the usual range of pressure in reservoir conditions [15]. The population of sulfate-reducing bacteria was previously isolated from this field.…”

Section: Oil Field Water Samplingmentioning

confidence: 99%

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A kinetic study on bacterial sulfate reduction

Bernardez

Lima

Jesus

et al. 2013

Bioprocess Biosyst Eng

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The activity of anaerobic sulfate reduction was studied using sulfate-reducing bacteria isolated from the water produced from a Brazilian oil reservoir. The effects of the initial sulfate concentration on the anaerobic sulfate reduction and sulfide generation kinetics were investigated. The redox potential, the biomass solution content, and the sulfate and the sulfide solution content were measured. The results indicate that the sulfate conversion and the sulfide generation are both first-order processes for the initial sulfate concentration of 823, 1,282, and 1,790 mg/L. The results for the kinetic constants for the sulfate conversion indicate an inhibition with the enhancement of the initial sulfate solution content. The kinetic constants for the sulfide generation indicate that this reaction is almost independent of the initial sulfate solution content due to the presence of at least two in-series processes that are faster than the microbial conversion of the sulfate. The kinetic test using the water from an onshore oil field, with an initial sulfide content of 228 mg/L and sulfate content of 947 mg/L, shows a sulfate conversion of 50 % in 528 h. The kinetic modeling for the net content of sulfate and sulfide indicates that the sulfate conversion is slower for this water than for the deionized water tests; however, the sulfide formation has almost the same conversion velocity. The reactions are first order in both cases.

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Section: Oil Field Water Samplingmentioning

confidence: 99%

Section: Oil Field Water Samplingmentioning

confidence: 99%