What does this research mean for the field?

Sequential injection of dry supercritical CO2 and CO2-saturated brine into carbonate formations increases porosity and permeability, improving injectivity, but simultaneously reduces the mechanical integrity of the rock framework. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research explores how injecting dry supercritical CO2 and CO2-saturated brine affects the properties of carbonate formations.

July 12, 2026Energy & Fuels

Impact of Sequential Injection of Dry scCO 2 and CO 2 –Saturated Brine on the Petrophysical and Mechanical Properties of Carbonate Formations

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Authors

OAOMER ALKHEIR AIAhmed Farid Ibrahim MAMurtada Saleh Aljawad

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Overview

Randomized trial investigates CO2 injection effects on carbonate rock properties, suggesting implications for storage security.

Key Points

This research explores how injecting dry supercritical CO2 and CO2-saturated brine affects the properties of carbonate formations.
Evaluated porosity (20.18% to 23.76%) and permeability (26.14 mD to 427.21 mD) of rock samples.
Simulated CO2 storage conditions with injections at 3500 psi and 60 °C.
Used advanced techniques including NMR imaging and micro-CT to analyze structural changes.
Porosity increased by up to 11%, with permeability increasing by 45% in one core and nearly doubling due to wormhole formation in another.
Dynamic Young's modulus decreased while Poisson's ratio increased, indicating mechanical weakening.
Sequential injections altered pore structure, improving local injectivity but posing potential storage-security risks.

Cite This Study

ALKHEIR et al. (2026) studied this question.

synapsesocial.com/papers/6a532e624f7abc118adecc56 https://doi.org/10.1021/acs.energyfuels.6c02152

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July 12, 2026Energy & Fuels

Impact of Sequential Injection of Dry scCO 2 and CO 2 –Saturated Brine on the Petrophysical and Mechanical Properties of Carbonate Formations

View Full Paper

Ask AI

Bookmark

Authors

OAOMER ALKHEIR AIAhmed Farid Ibrahim MAMurtada Saleh Aljawad

Discussion

Member takes

Overview

Randomized trial investigates CO2 injection effects on carbonate rock properties, suggesting implications for storage security.

Key Points

This research explores how injecting dry supercritical CO2 and CO2-saturated brine affects the properties of carbonate formations.
Evaluated porosity (20.18% to 23.76%) and permeability (26.14 mD to 427.21 mD) of rock samples.
Simulated CO2 storage conditions with injections at 3500 psi and 60 °C.
Used advanced techniques including NMR imaging and micro-CT to analyze structural changes.
Porosity increased by up to 11%, with permeability increasing by 45% in one core and nearly doubling due to wormhole formation in another.
Dynamic Young's modulus decreased while Poisson's ratio increased, indicating mechanical weakening.
Sequential injections altered pore structure, improving local injectivity but posing potential storage-security risks.

Cite This Study

ALKHEIR et al. (2026) studied this question.

synapsesocial.com/papers/6a532e624f7abc118adecc56 https://doi.org/10.1021/acs.energyfuels.6c02152

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