Estimates of lithium mass yields from produced water sourced from the Devonian-aged Marcellus Shale.

Decarbonatization initiatives have rapidly increased the demand for lithium. This study uses public waste compliance reports and Monte Carlo approaches to estimate total lithium mass yields from produced water (PW) sourced from the Marcellus Shale in Pennsylvania (PA). Statewide, Marcellus Shale PW has substantial extractable lithium, however, concentrations, production volumes and extraction efficiencies vary between the northeast and southwest operating zones.

Dataset documenting reaction-induced changes to five fractured foamed wellbore cement cores during CO fluid flow.

The integrity of wellbore cement is vital for the long-term success of applications such as enhanced oil recovery and carbon storage. Intact cemented well casings are crucial to preventing leakage and fluid migration, as well as maintaining safety of operations. To investigate the changes to fractures in foamed wellbore cement in a carbon storage scenario, four cores were fractured lengthwise and injected with deionized water at equilibrium with CO.

Alteration of Fractured Foamed Cement Exposed to CO-Saturated Water: Implications for Well Integrity.

Geologic CO storage (GCS) is a method to mitigate the adverse impact of global climate change. Potential leakage of CO from fractured cement at the wellbore poses a risk to the feasibility of GCS. Foamed cement is widely applied in deepwater wells where fragile geologic formations cannot support the weight of conventional cement.

Shale pore alteration: Potential implications for hydrocarbon extraction and CO storage.

Shale unconventional reservoirs are currently and expected to remain substantial fossil fuel resources in the future. As CO is being considered to enhance oil recovery and for storage purposes in unconventional reservoirs, it is unclear how the shale matrix and fractures will react with CO and water during these efforts. Here, we examined the Utica Shale and its reactivity with CO and water using scanning electron microscopy, N and CO sorption isotherms, mercury intrusion porosimetry, and X-ray scattering methods.

CO2 reaction with hydrated class H well cement under geologic sequestration conditions: effects of flyash admixtures.

The rate and mechanism of reaction of pozzolan-amended Class H cement exposed to both supercritical CO2 and CO2-saturated brine were determined under geologic sequestration conditions to assess the potential impact of cement degradation in existing, wells on CO2 storage integrity. The pozzolan additive chosen, Type F flyash, is the most common additive used in cements for well sealing in oil-gas field operations. The 35:65 and 65:35 (v/v) pozzolan-cement blends were exposed to supercritical CO2 and CO2-saturated brine and underwent cement carbonation.

Rate of CO2 attack on hydrated Class H well cement under geologic sequestration conditions.

Experiments were conducted to study the degradation of hardened cement paste due to exposure to CO2 and brine under geologic sequestration conditions (T = 50 degrees C and 30.3 MPa). The goal was to determine the rate of reaction of hydrated cement exposed to supercritical CO2 and to CO2-saturated brine to assess the potential impact of degradation in existing wells on CO2 storage integrity.

Degradation of well cement by CO2 under geologic sequestration conditions.

Experiments were conducted to assess the durability of cements in wells penetrating candidate formations for geologic sequestration of CO2. These experiments showed a significant variation in the initial degradation (9 days of exposure) based on the curing conditions. The high-temperature (50 degrees C) and high-pressure (30.