Effect of CO2 on Rock Properties: Frio Crosswell Case Study

Al-Hosni, M.; Vialle, Stéphanie; Gurevich, Boris; Daley, T.

doi:10.3997/2214-4609.201414393

Cited by 4 publications

(6 citation statements)

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“…Rock types investigated include silicate‐rich sandstone (Hangx et al, ; Rathnaweera et al, ; Rinehart, Dewers, et al, ), quartz‐ and feldspar‐bearing sandstones (Hangx et al, ; Rinehart, Dewers, et al, ; Zheng et al, ), calcite‐cemented sandstone (Hangx et al, ; Lamy‐Chappuis et al, ; Rathnaweera et al, ; Rinehart, Dewers, et al, ), chlorite‐cemented sandstone (Rinehart, Dewers, et al, ), and anhydrite‐cemented sandstone (Hangx et al, ). Laboratory experiments on fluid‐rock interaction in CO 2 environments found that the mechanical behavior of sandstone could be weakened by cement mineral dissolution (Lamy‐Chappuis et al, ; Le Guen et al, ; Al Hosni et al, ; Rathnaweera et al, , ; Rinehart, Dewers, et al, ; Vanorio et al, ; Vialle & Vanorio, ; Zheng et al, ). Research has noted decreases in P and S wave velocities following CO 2 injection into rock (Al Hosni et al, ; Rinehart, Dewers, et al, ; Vanorio et al, ; Vialle & Vanorio, ), which was reported as the reduction in elastic, bulk, and shear moduli and compressive strength (Raza et al, ; Rinehart, Dewers, et al, ; Zheng et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Laboratory experiments on fluid‐rock interaction in CO 2 environments found that the mechanical behavior of sandstone could be weakened by cement mineral dissolution (Lamy‐Chappuis et al, ; Le Guen et al, ; Al Hosni et al, ; Rathnaweera et al, , ; Rinehart, Dewers, et al, ; Vanorio et al, ; Vialle & Vanorio, ; Zheng et al, ). Research has noted decreases in P and S wave velocities following CO 2 injection into rock (Al Hosni et al, ; Rinehart, Dewers, et al, ; Vanorio et al, ; Vialle & Vanorio, ), which was reported as the reduction in elastic, bulk, and shear moduli and compressive strength (Raza et al, ; Rinehart, Dewers, et al, ; Zheng et al, ). Combined with image analysis (scanning electron microscope and thin section), previous studies have shown that the magnitude of these changes is strongly dependent on the initial pore structure and the microstructural relationship between cement and framework grains by affecting the reactive surface area under similar reservoir conditions (Hangx et al, ; Rinehart, Dewers, et al, ; Vanorio et al, ; Vialle & Vanorio, ).…”

Section: Introductionmentioning

confidence: 99%

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Chemo‐mechanical Alterations Induced From CO₂ Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Luhmann

Rinehart

et al. 2020

JGR Solid Earth

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Carbon capture, utilization, and storage may lead to mechanical degradation of the subsurface reservoir from fluid‐rock interaction, which could lead to wellbore instability or reservoir compaction. To better understand potential relationship between mechanical degradation with various carbonate cement textures and compositions in sandstone reservoirs, six flow‐through experiments were conducted. Formation water (TDS = 5,390 mg/L) enriched with CO2 flowed through two types of Pennsylvanian Morrow B Sandstone: an ankerite‐siderite‐cemented sandstone (disseminated cement texture) and a calcite‐cemented sandstone (poikilotopic cement texture). The experiments produced little change in permeability in the ankerite‐siderite‐cemented sandstone, but permeability increased up to more than 1 order of magnitude in the calcite‐cemented sandstone. Ultrasonic measurements and cylinder‐splitting tests (also known as Brazilian tests) suggested negligible mechanical degradation of the ankerite‐siderite‐cemented sandstone. Variable changes, with significant mechanical degradation in the static moduli, were observed in the calcite‐cemented sandstone. Thus, dissolution of the disseminated ankerite‐siderite cement (0.28–0.30%) had minimal impact on modifying the flow network and the mechanical integrity of the sandstone, whereas dissolution of the poikilotopic calcite cement (0.89–1.13%, quantified with fluid chemistry and visualized with X‐ray microcomputed tomography) impacted the mechanical strength of the sandstone by disconnecting framework grains. With the high water‐to‐rock mass ratios (7.3–8.2) and number of pore volumes (147–675) employed in these experiments, potential risks are most relevant to regions near injection wells. Ultimately, the chemo‐mechanical effects induced by CO2 injection are strongly influenced by the cement texture and composition and the burial history of the reservoir rock.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemo‐mechanical Alterations Induced From CO₂ Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Luhmann

Rinehart

et al. 2020

JGR Solid Earth

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“…However, recently, Al‐Hosni et al . () modelled poorly cemented Frio‐ C sandstones (Texas) with a constant‐cement model and estimated that the reservoir has a grain contact‐cement volume of 0.1%. They conclude that one order of magnitude decrease in contact‐cement volume in rocks with small cement can lead to significant changes (∼40%) in elastic moduli.…”

Section: Discussionmentioning

confidence: 99%

“…In another study, Al‐Hosni et al . () show that, at the Frio CO 2 injection site (USA), rock frame (cement) dissolution is thought to explain time‐lapse P‐ and S‐wave velocity changes observed in cross‐well seismic data. Saul and Lumley () also show that the grain contact cement can be geomechanically altered due to fluid injection, changing the rock frame and therefore influencing time‐lapse signatures.…”

Section: Introductionmentioning

confidence: 99%

“…A recent study in Ketzin (Germany) has shown that timelapse seismic changes could be attributed to fluid saturation, pressure change, and mineral dissolution of the rock in a sandstone reservoir (Ivandic et al 2015). In another study, Al-Hosni et al (2015) show that, at the Frio CO 2 injection site (USA), rock frame (cement) dissolution is thought to explain time-lapse P-and S-wave velocity changes observed in cross-well seismic data. Saul and Lumley (2015) also show that the grain contact cement can be geomechanically altered due to fluid injection, changing the rock frame and therefore influencing time-lapse signatures.…”

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confidence: 97%

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Are changes in time‐lapse seismic data due to fluid substitution or rock dissolution? A CO₂ sequestration feasibility study at the Pohokura Field, New Zealand

Sim

Adam²

2016

Geophysical Prospecting

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Seismic methods are commonly used to monitor the subsurface when carbon dioxide (CO2) is injected into a reservoir. Besides fluid saturation and pressure changes, CO2–water mixtures may cause rock alteration. In this petrophysical study, we compare the elastic property changes due to fluid replacement and those due to mineral dissolution for carbonate‐cemented sandstones at the Pohokura Field, New Zealand. We quantify the effects of fluid substitution from fully brine to fully supercritical CO2 saturation and carbonate cement dissolution on the seismic signatures of the reservoir rocks by combining laboratory results, petrographic analyses, and geophysical well log data. We conclude that elastic property changes due to mineral dissolution are significantly greater than those due to fluid substitution alone. The northern part of the Pohokura Field has coarser‐grained sandstones, which experience the largest changes in wave speeds. Our hypothesis is that these changes result from carbonate cement dissolution in the presence of CO2–water–sandstone reactions. If time‐lapse seismic data were to be acquired in this field, the northern area could show P‐wave velocity reductions of up to 20% and a 131.7% increase in seismic amplitude from a brine‐saturated rock to an altered, fully CO2‐saturated rock. In comparison, the southern part of the field, where sandstones are mostly fine‐grained, we expect a P‐wave velocity decrease of 6% if such dissolution process took place. Finally, we show that the elastic properties of the reservoir rocks can be described with the constant‐cement model. The model is used to predict that the dissolution process reduces the volume of grain contact cement, on average, from 2.5% to 1.75% of the total rock mineral volume. Our analysis suggests that changes to the rock frame, which includes carbonate minerals, cannot be ignored for a CO2 injection scenario.

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CO2 rock physics modeling for reliable monitoring of geologic carbon storage

Creasy,

Huang,

Gasperikova

et al. 2024

Commun Earth Environ

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Monitoring, verification, and accounting (MVA) are crucial to ensure safe and long-term geologic carbon storage. Seismic monitoring is a key MVA technique that utilizes seismic data to infer elastic properties of CO2-saturated rocks. Reliable accounting of CO2 in subsurface storage reservoirs and potential leakage zones requires an accurate rock physics model. However, the widely used CO2 rock physics model based on the conventional Biot-Gassmann equation can substantially underestimate the influence of CO2 saturation on seismic waves, leading to inaccurate accounting. We develop an accurate CO2 rock physics model by accounting for both effects of the stress dependence of seismic velocities in porous rocks and CO2 weakening on the rock framework. We validate our CO2 rock physics model using the Kimberlina-1.2 model (a previously proposed geologic carbon storage site in California) and create time-lapse elastic property models with our new rock physics method. We compare the results with those obtained using the conventional Biot-Gassmann equation. Our innovative approach produces larger changes in elastic properties than the Biot-Gassmann results. Using our CO2 rock physics model can replicate shear-wave speed reductions observed in the laboratory. Our rock physics model enhances the accuracy of time-lapse elastic-wave modeling and enables reliable CO2 accounting using seismic monitoring.

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Effect of CO2 on Rock Properties: Frio Crosswell Case Study

Cited by 4 publications

References 0 publications

Chemo‐mechanical Alterations Induced From CO₂ Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Chemo‐mechanical Alterations Induced From CO₂ Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Are changes in time‐lapse seismic data due to fluid substitution or rock dissolution? A CO₂ sequestration feasibility study at the Pohokura Field, New Zealand

CO2 rock physics modeling for reliable monitoring of geologic carbon storage

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Effect of CO2 on Rock Properties: Frio Crosswell Case Study

Cited by 4 publications

References 0 publications

Chemo‐mechanical Alterations Induced From CO2 Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Chemo‐mechanical Alterations Induced From CO2 Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Are changes in time‐lapse seismic data due to fluid substitution or rock dissolution? A CO2 sequestration feasibility study at the Pohokura Field, New Zealand

CO2 rock physics modeling for reliable monitoring of geologic carbon storage

Contact Info

Product

Resources

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Chemo‐mechanical Alterations Induced From CO₂ Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Chemo‐mechanical Alterations Induced From CO₂ Injection in Carbonate‐Cemented Sandstone: An Experimental Study at 71 °C and 29 MPa

Are changes in time‐lapse seismic data due to fluid substitution or rock dissolution? A CO₂ sequestration feasibility study at the Pohokura Field, New Zealand