Static and dynamic reservoir modeling for geological CO2 sequestration at Cranfield, Mississippi, U.S.A.

Hosseini, Seyyed A.; Lashgari, Hamidreza; Choi, Jong Won; Nicot, Jean‐Philippe; Lu, Jiemin; Hovorka, Susan

doi:10.1016/j.ijggc.2012.11.009

Cited by 118 publications

(130 citation statements)

References 31 publications

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“…Field-scale scCO 2 plumes often exhibit channelized scCO 2 distributions in high-permeability zones and by-passing of low-permeability zones at multiple scales, as observed at the Shenhua storage site (Chang et al, 2013;Zhang et al, 2016), the Frio pilot test site (Xu et al, 2010), and the Cranfield large-scale demonstration site (Hosseini et al, 2013) among others. Because of slow diffusion into the scCO 2 -free low-permeability zones, scCO 2 dissolution and mass transfer in heterogeneous aquifers may have a significantly smaller role in solubility trapping than in homogeneous formations.…”

Section: Discussionmentioning

confidence: 96%

Pore-scale supercritical CO2 dissolution and mass transfer under drainage conditions

Chang

Zhou

Oostrom

et al. 2017

Advances in Water Resources

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Abstract:Recently, both core-and pore-scale imbibition experiments have shown nonequilibrium dissolution of supercritical CO 2 (scCO 2 ) and a prolonged depletion of residual scCO 2 . In this study, pore-scale scCO 2 dissolution and mass transfer under drainage conditions were investigated using a two-dimensional heterogeneous micromodel and a novel fluorescent water dye with a sensitive pH range between 3.7 and 6.5. Drainage experiments were conducted at 9 MPa and 40 °C by injecting scCO 2 into the sandstone-analogue pore network initially saturated by water without dissolved CO 2 (dsCO 2 ). During the experiments, time-lapse images of dye intensity, reflecting water pH, were obtained. These images show non-uniform pH in individual pores and pore clusters, with average pH levels gradually decreasing with time.Further analysis on selected pores and pore clusters shows that (1) rate-limited mass transfer prevails with slowly decreasing pH over time when the scCO 2 -water interface area is low with respect to the volume of water-filled pores and pore clusters, (2) fast scCO 2 dissolution and phase equilibrium occurs when scCO 2 bubbles invade into water-filled pores, significantly enhancing the area-to-volume ratio, and (3) a transition from rate-limited to diffusion-limited mass transfer occurs in a single pore when a medium area-to-volume ratio is prevalent. The analysis also shows that two fundamental processes -scCO 2 dissolution at phase interfaces and diffusion of dsCO 2 at the pore scale (10-100 µm), observed after scCO 2 bubble invasion into water-filled pores without pore throat constraints, are relatively fast. The overall slow dissolution of scCO 2 in the millimeter-scale micromodel can be attributed to the small area-to-volume ratios that represent pore-throat configurations and characteristics of phase interfaces. This finding is applicable for the behavior of dissolution at pore, core, and field scales when water-filled pores and pore clusters of varying size are surrounded by scCO 2 at narrow pore throats.

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Section: Discussionmentioning

confidence: 96%

Pore-scale supercritical CO2 dissolution and mass transfer under drainage conditions

Chang

Zhou

Oostrom

et al. 2017

Advances in Water Resources

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“…The reservoir consists of six layers with various thicknesses and properties based on well logs from injection well F1 (Hosseini et al, 2013) (e). The reservoir is sandwiched between a low-permeability underlying layer of 30 m thickness and an overlying formation of 3173.6 m thickness.…”

Section: Reservoirmentioning

confidence: 99%

How to sustain a CO2-thermosiphon in a partially saturated geothermal reservoir: Lessons learned from field experiment and numerical modeling

2018

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“…Located 12 miles east of Natchez, MS, the 25m-thick amalgamated fluvial sandstone reservoir is located in the Upper Cretaceous Lower Tuscaloosa Formation at a depth that varies from 3178m to 3207m, with a dip angle of about 2 o (Delshad et al, 2013;Hosseini et al, 2013;Kordi, 2013;Lu et al, 2011). One injection well (CFU 31F-1) and two observatory wells (CFU 31F-2 and CFU 31F-3) are drilled within a spacing of 100m as shown in …”

Section: Geology Of Cranfield Fieldmentioning

confidence: 99%

Investigating the Geochemical Alterations in an Aquifer Due to Long-Term Sequestration of CO2 Using Time-Lapse Seismic Information

Han

Srinivasan

2015

All Days

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The effects of chemical interaction between injected CO2, brine, and formation rocks are often ignored in sequestration studies because chemical reactions are assumed to be localized to carbonate rocks that make up only a small proportion of the potential reservoirs. It is conjectured in this work that long-term exposure of certain types of clays and cement material to CO2-brine mixtures can induce chemical reactions and subsequent alteration of rock properties that can be subsequently detected in time-lapse seismic surveys. This is demonstrated using a case-study structured after the Cranfield field injection site. Geochemical alterations of the reservoir rock are quantified by performing reactive transport simulations and subsequently rock physics models are used to translate the altered petrophysical properties into seismic responses. The study quantifies the long-term geochemical effects of CO2 injection on the seismic response and conversely, presents an approach to infer the reservoir regions contacted by the CO2-saturated brine based on the observed seismic response and a unique model selection algorithm. Time-lapse or passive seismic monitoring is an effective method for mapping the progress of the CO2 plume through the subsurface. But, because of the lack of resolution of the seismic information, it is necessary to use the seismic information together with prior geologic knowledge about the surface in order to identify if there is any migration of CO2 into regions that might be deemed sensitive e.g. overlying aquifers or faults. Because of uncertainties in the prior geologic description of the reservoir, the feasibility of implementing a model selection process is explored in this work. The model selection procedure utilizes the observed well data and reference seismic map to select a subset of models that represent the posterior geologic uncertainty. The flow simulation of CO2 injection and forward seismic modeling were repeated on the posterior models, and the seismic responses were compared for the reaction and non-reaction cases. The study showed that the effects of geochemical reactions and the resultant impact on petrophysical properties and fluid saturation distribution were visible in the seismic response. Major differences in seismic responses were detected in regions of the reservoir where significant amount of minerals were dissolved and precipitated. These regions were at the top of the reservoir due to the reactions caused by the buoyant CO2 plume. The presence of carbonate facies, even in small proportion, plays an important role in geochemical reactions and their effect is manifested at the seismic scale. The results of this time-lapse study can provide new interpretation of events observed in time-lapse seismic data that might lead to a better assessment of leakage pathways and other risks.

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Static and dynamic reservoir modeling for geological CO2 sequestration at Cranfield, Mississippi, U.S.A.

Cited by 118 publications

References 31 publications

Pore-scale supercritical CO2 dissolution and mass transfer under drainage conditions

Pore-scale supercritical CO2 dissolution and mass transfer under drainage conditions

How to sustain a CO2-thermosiphon in a partially saturated geothermal reservoir: Lessons learned from field experiment and numerical modeling

Investigating the Geochemical Alterations in an Aquifer Due to Long-Term Sequestration of CO2 Using Time-Lapse Seismic Information

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