Abstract The low recovery and high oil volume remaining in shale reservoirs are a strong motivation to investigate the application of enhanced methods these reservoirs. This paper presents potential applying cyclic CO2 injection improve factors Cyclic could be an effective technique this type for several reasons. It is single-well process; well-to-well connectivity not required, hydraulic natural fractures provide large contact area injected gas penetrate diffuse into low-permeability...

Carbon capture and storage (CCS) has been recognized as a pivotal technology for mitigating climate change by reducing CO2 emissions. Storing in deep saline aquifers requires preserving the water-wet nature of formation throughout period, which is crucial maintaining rock integrity efficiency. However, wettability formations can upon exposure to supercritical (scCO2), potentially compromising Despite extensive studies on various factors influencing alteration, significant research gap...

Abstract Cyclic gas injection is considered as an effective and quick responding recovery process that has been widely used in the worldwide. Studies showed cyclic combined with modern technologies such horizontal well drilling hydraulic fracturing achieved promising results low permeability formation. technique was introduced our earlier publication for improving oil stimulated fractured shale reservoirs. In this paper, we focus on effect of injected composition fracture properties...

Abstract Ensuring wellbore integrity is crucial for the long-term success of carbon capture and storage (CCS) projects. Cement durability under various environmental conditions plays a pivotal role in maintaining wells acts as main barrier to leakage. This study investigates mechanical behaviour different formulations well cement, focusing on effects supercritical CO2 exposure cement's porosity, permeability properties. The tested this are neat Class H C high porosity lightweight field...

Summary Since the 1950s, United Nations (UN) has designated days (e.g., World Wetland Day), years Year of Gorilla) and decades Decade on Biodiversity) with a commonly stated goal to raise awareness funding for conservation-oriented initiatives, these Days, Years Decades ‘…’ (hereafter ‘DYDOs’) continue. However, effectiveness initiatives achieve their objectives contribute positive conservation outcomes is unclear. Here we used binary analysis change model evaluate UN DYDOs observed between...

Abstract The is wide consensus that combustion of fossil fuels and rising greenhouse gas emissions in the atmosphere are accelerating global warming. To avoid dilemma need for to provide energy supply reduce fuel related emissions, it critical promote renewable as a viable option satisfy world's requirements. However, employing renewables generate power necessitates use bulk storage accommodate discrepancies where when produced versus needed. Underground hydrogen has potential support...

Summary Produced water (PW) is an undesirable byproduct generated from oil and natural gas production. Due to the large volume produced, managing its disposal challenging. Generally, PW used internally for operations while different types of means dispose remaining volumes. Recently, there has been a need repurpose customarily disposed other industries’ applications. This presents potential opportunity reduce excessive freshwater usage in depletion industries, thus aiding conservation as one...

The subsurface confinement of anthropogenic carbon dioxide (CO2) demands robust risk assessment methodologies to identify potential leakage pathways. Legacy wells within the Area Review (AoR) represent one pathway. Robust require enormous amounts data, which are not available for many old legacy wells. This study strategically categorizes 4386 AoR a CO2 storage site in Illinois basin and identifies high-risk by leveraging publicly data—reports well logs submitted state regulatory agencies....

Summary Produced water (PW) is the most significant waste product in oil and gas exploitation, numerous challenges are associated with its treatment. For over half a century, PW treatment handling have evolved from to reusable stream for petroleum industry. reused recycled hydrocarbon recovery processes, well completion, stimulation, drilling, etc. Despite this usage, enormous volumes still required be disposed of subsurface aquifers or surface bodies after Challenges related mainly widely...

Abstract One of the main challenges underground hydrogen storage in porous media (UHSP) is ensuring efficient extraction after long periods. Unconventional shale resources have contributed towards 65% US crude oil production 2021. Thus, if we are to explore possibility UHSP depleted oil-producing reservoirs, should ascertain interaction with residual oil, throughout period, leads recovering undesirable amounts during extraction. Cyclic injection can be indicative recovery The process...

Abstract Objectives/Scope: Graduate and undergraduate petroleum engineering degrees enrollments are presented. Causes effects of huge changes in enrollment granted over the past sixty years discussed. The impacts on future industry’s available new engineers sources these talents Methods, Procedures, Process: United States since 1950’s have been collected from AIME (SPE’s mother institution) sources, SPE’s annual reports, more recently surveys department heads. Additional input standing...

Abstract In the present study, spontaneous imbibition experiments, steady-state permeability measurements, and numerical simulation are integrated to quantify changes in effective water permeability, capillary pressure relative curves due polymer adsorption of spontaneously imbibed fracturing fluid. The effect surfactant core bedding plane on fluid volumes were also investigated. researchers considered a 0.1 wt% friction reducer into low-permeability sand samples extracted from Scioto, Crab...

ABSTRACT Encouraging the use of renewable energy is crucial for meeting our needs, but it requires bulk storage to be practical. One potential solution underground hydrogen storage, which could provide a consistent supply clean world. Depleted hydrocarbon reservoirs may viable option this purpose, given their existing infrastructure. However, ensuring wellbore integrity major challenge when storing in such reservoirs. To test feasibility approach, core holder replicate conditions having 12"...