Impact of Compositional Differences in Chalk and Water Content on Advanced Water Flooding: A Microcalorimetrical Assessment

Cobos, Jacquelin E.; Søgaard, Erik Gydesen

doi:10.1021/acs.energyfuels.0c02108

Cited by 5 publications

(3 citation statements)

References 44 publications

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“…Those particles were used for the ITC experiments and elemental composition testing by a Rigaku supermini 200 X-ray fluorescence (XRF) machine. Table 3 displays the results from the XRF analysis [17]. The Austin cores were washed gently with tap water to remove loose particles before the spontaneous imbibition experiments.…”

Section: Rock Materialsmentioning

confidence: 99%

“…One-hundred milligrams of Austin chalk was placed in an ampule. Then, 200 µL of EFB and 200 µL of crude oil were added to the rock particles to resemble an oil reservoir [13,[16][17][18]. The ampule was lowered into the TA microcalorimeter until it reached its final measuring position.…”

Section: Microcalorimetry Proceduresmentioning

confidence: 99%

“…The degree of accuracy of this technique is higher than those of alternatives (e.g., Van 't Hoff equation) because the enthalpy is determined from measurements [16]. In our previous works, microcalorimetry was proven to be useful for the understanding of complex rock-fluid and fluid-fluid interactions for both enhanced oil recovery and geothermal energy production [2,13,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Microcalorimetric Study of Carbonating Produced Water as a Promising CO2 Storage and Enhanced Oil Recovery Method

et al. 2022

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Carbonated produced water injection (CPWI) might be considered an efficient alternative to handle the largest waste stream while enhancing the oil recovery and storing carbon dioxide (CO2) underground. This study was an attempt to get a deeper understanding of the oil recovery process through synergy between spontaneous imbibition and isothermal titration calorimetry (ITC) experiments. The results from the spontaneous imbibition experiments showed 7% to 11% additional oil recovery in comparison with plain produced water. Rock–fluid and fluid–fluid interactions, evaluated by isothermal titration calorimetry (ITC) experiments, confirmed that the CPW interactions with oil+EFB+chalk and oil+EFB systems are much more exothermic than those with plain PW in those systems. The synergy between spontaneous imbibition and ITC experiments provides an improved understanding of carbonated water injection in carbonate reservoirs.

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Section: Rock Materialsmentioning

confidence: 99%

Section: Microcalorimetry Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microcalorimetric Study of Carbonating Produced Water as a Promising CO2 Storage and Enhanced Oil Recovery Method

et al. 2022

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Physical simulation of residual oil displacement production in offshore strong bottom water reservoir

Tan¹,

Cai²,

Li³

et al. 2021

J Petrol Explor Prod Technol

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The C oilfield is located in the Bohai Bay Basin, a typical strong bottom water reservoir. Oilfield reservoir and oil–water distribution are complex. At present, the C oilfield has entered the high water cut development stage, and it is challenging to stabilize oil and control water. The reservoir with an imperfect well pattern has dominant bottom water ridge channels, uneven oil–water interface uplift, limited water drive sweep range, and low inter-well reservoir production degree. The oil layer between the horizontal section of the production well and the top of the reservoir cannot be effectively developed, and the remaining oil is enriched. Therefore, it is urgent to explore new energy supplement methods to improve inter-well and vertical remaining oil production in the C oilfield. In this study, the displacement medium is optimized through indoor experimental simulation. From the experimental results, the remaining oil between the sand bodies can be used in heavy oil reservoirs, and the residual oil between wells can be significantly utilized in the alternate displacement of gas and foam, and the recovery degree of the reservoir is increased by 12.44%. The remaining oil at the top of the reservoir can be used in the upper reservoir to increase the remaining oil in the top of the reservoir by injecting gas and foam alternately in the new reservoir. The final recovery of the reservoir is increased by 6.00%. This experimental study guides tapping the potential of the remaining oil in the offshore strong bottom water reservoir.

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Microscopic and macroscopic assessment of carbonate dissolution for geologic $${{\hbox {CO}}_{2}}$$ storage

Cobos,

Folkvord,

Søgaard

et al. 2023

Discov Energy

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Carbon capture and storage in underground formations might be considered as a relevant technology to curb anthropogenic climate gas emissions. However, carbon dioxide ($${{\hbox {CO}}_{2}}$$ CO 2 ) injection can lead to severe rock-fluid interactions depending on the thermodynamic conditions, rock and fluids composition. The progressive dissolution of $${{\hbox {CO}}_{2}}$$ CO 2 in the formation brine results in mineral dissolution/precipitation processes that may drastically change the properties of the reservoir. This study is an attempt to get a deeper understanding of the dissolution/precipitation processes in a heterogeneous limestone at microscopic and macroscopic levels by a synergy between Isothermal Titration Calorimetry (ITC) and core flooding experiments with in-situ imaging to quantify uneven displacement fronts and understand the influence of reactions on a larger scale. Rock-fluid and fluid-fluid interactions, evaluated by ITC experiments, indicate that the carbonate dissolution is unfavorable with respect to enthalpy change but thermodynamically favorable with respect to entropy change (cations and hydrogen carbonate increase in the brine). Core flooding experiments with in-situ imaging by PET/CT show that complex pore structures cause a variation in the availability and ratio of the reactive fluid throughout the porous medium, hence, non-uniform dissolution was confirmed at core scale. The synergy between microcalorimetry and core flooding provides relevant insights into the dissolution of heterogeneous carbonate rocks at both microscopic and macroscopic scales.

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Impact of Compositional Differences in Chalk and Water Content on Advanced Water Flooding: A Microcalorimetrical Assessment

Cited by 5 publications

References 44 publications

Microcalorimetric Study of Carbonating Produced Water as a Promising CO2 Storage and Enhanced Oil Recovery Method

Microcalorimetric Study of Carbonating Produced Water as a Promising CO2 Storage and Enhanced Oil Recovery Method

Physical simulation of residual oil displacement production in offshore strong bottom water reservoir

Microscopic and macroscopic assessment of carbonate dissolution for geologic $${{\hbox {CO}}_{2}}$$ storage

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