The Economic Contribution of CO2 Enhanced Oil Recovery in Wyoming 2010-2012

Cook, Benjamin

doi:10.2139/ssrn.2411868

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…The produced gas injection scenario uses the produced gas collected on the well site, so no transportation costs would occur. The CO 2 cost is $1.0/Mcf with a $0.50/Mcf transportation charge (Cook 2013), while the cost associated with waterflooding is $6/barrel. The NPV for each scenario is shown in Table 4.…”

Section: Resultsmentioning

confidence: 99%

Enhancing recovery and sensitivity studies in an unconventional tight gas condensate reservoir

2018

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The recovery factor from tight gas reservoirs is typically less than 15%, even with multistage hydraulic fracturing stimulation. Such low recovery is exacerbated in tight gas condensate reservoirs, where the depletion of gas leaves the valuable condensate behind. In this paper, three enhanced gas recovery (EGR) methods including produced gas injection, CO 2 injection and water injection are investigated to increase the well productivity for a tight gas condensate reservoir in the Montney Formation, Canada. The production performance of the three EGR methods is compared and their economic feasibility is evaluated. Sensitivity analysis of the key factors such as primary production duration, bottom-hole pressures, and fracture conductivity is conducted and their effects on the well production performance are analyzed. Results show that, compared with the simple depletion method, both the cumulative gas and condensate production increase with fluids injected. Produced gas injection leads to both a higher gas and condensate production compared with those of the CO 2 injection, while waterflooding suffers from injection difficulty and the corresponding low sweep efficiency. Meanwhile, the injection cost is lower for the produced gas injection due to the on-site available gas source and minimal transport costs, gaining more economic benefits than the other EGR methods.

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Section: Resultsmentioning

confidence: 99%

Enhancing recovery and sensitivity studies in an unconventional tight gas condensate reservoir

2018

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“…3 For example, in Wasson Field (Denver, USA), a total recovery of about 19.5% was achieved using carbon dioxide (CO 2 ) injection for the oilfield with an estimated original-oil-in-place (OOIP) of about 2 billion barrels. 4 Gas injection in general and CO 2 −EOR in particular, has gained prominence in petroleum industry mainly because of (i) the cheap price of CO 2 compared to other gases, 5,6 (ii) its availability, 7 and more importantly, (iii) its ability to develop a high solubility in various types of crudes. 8−10 Moreover, at its supercritical state, CO 2 exhibits singular properties (low viscosity and high diffusivity), which were revealed useful for oil extraction.…”

Section: ■ Introductionmentioning

confidence: 99%

“…For example, in Wasson Field (Denver, USA), a total recovery of about 19.5% was achieved using carbon dioxide (CO 2 ) injection for the oilfield with an estimated original-oil-in-place (OOIP) of about 2 billion barrels . Gas injection in general and CO 2 –EOR in particular, has gained prominence in petroleum industry mainly because of (i) the cheap price of CO 2 compared to other gases, , (ii) its availability, and more importantly, (iii) its ability to develop a high solubility in various types of crudes. − Moreover, at its supercritical state, CO 2 exhibits singular properties (low viscosity and high diffusivity), which were revealed useful for oil extraction. , Using a dead oil (density of 0.8573 kg/L) into which super critical CO 2 was injected, Rudyk et al were able to achieve a total oil recovery ranging from 44–77%. However, they found that by adding a low molecular weight solvent to the advancing gas, the extraction of heavier fractions of the oil could be improved .…”

Section: Introductionmentioning

confidence: 99%

Asphaltene Aggregation in Crude Oils during Supercritical Gas Injection

et al. 2016

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This paper presents the aggregation of asphaltenic materials in three dead crude oils, including two heavy samples from Hokkaido (Japan) and an extra heavy sample from Canada. In this study, a modified ASTM D3279 method and PVT test were used to estimate the amount of precipitated asphaltene and the experimental bubble-point pressures of the samples, respectively. Upon which, a crude oil characterization was performed following pseudocomponent approach with the use of molecular weight and specific gravity of single carbon number from oil assay data as distribution variables. A simplified thermodynamic model, derived from the solubility model, was used to correlate the maximum asphaltene soluble with the aggregated amount. This study has highlighted that oil precipitation, during its titration, occurs as a function of both the molecular weight of the titrant and the carbon-to-hydrogen ratio in the asphaltene phase. Furthermore, the kinetics and the stability of intermolecular forces, developed during the miscibility process, are believed to alter oil polarity and gas solubility. More specifically, pressurization of the system [oil-supercritical gas] decreases the solubility parameters of the asphaltene fraction and increases the solvating strength of gas. Both effects were found to occur concurrently. This study has also demonstrated that asphaltenes are less soluble in impure gases compared to the pure one. At/near the bubble-point pressure, the supercritical gas, in contact with the oil, develops a potential as either a flocculant or coagulant. The increase in pseudo equilibrium temperature attained after gas injection was found also to alter asphaltene aggregation.

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Pegging input prices to output prices—A special price adjustment clause in long-term CO2 sales contracts

Gao

Veld

2021

Energy Economics

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The Economic Contribution of CO2 Enhanced Oil Recovery in Wyoming 2010-2012

Cited by 4 publications

References 9 publications

Enhancing recovery and sensitivity studies in an unconventional tight gas condensate reservoir

Enhancing recovery and sensitivity studies in an unconventional tight gas condensate reservoir

Asphaltene Aggregation in Crude Oils during Supercritical Gas Injection

Pegging input prices to output prices—A special price adjustment clause in long-term CO2 sales contracts

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