Experimental investigation of microscopic CO₂ injection for enhanced oil recovery in tight reservoirs

Oil exploitation of tight reservoirs has gained significant importance lately. Some researchers have defined tight reservoirs as those characterized with permeability lower than 0.1 mD. However, permeability is an absolute value, and tight reservoirs have complex pore systems that require a detailed geological and petrophysical rock...

The Power of Characterizing Pore-Fluid Distribution for Microscopic CO2 Injection Studies in Tight Sandstones

The microscopic structure of low-permeability tight reservoirs is complicated due to diagenetic processes that impact the pore-fluid distribution and hydraulic properties of tight rocks. As part of an ongoing study of carbon dioxide-enhanced oil and gas recovery (CO2-EOR/EGR) and CO2 sequestration, this research article adopts an integrated...

Microscopic CO₂ Injection in Tight Rocks: Implications for Enhanced Oil Recovery and Carbon Geo-Storage

Carbon dioxide (CO₂) injection has been widely used in conventional reservoirs for enhanced oil recovery and CO₂ sequestration. Nevertheless, the effectiveness of CO₂ injection in tight reservoirs is limited due to diagenetic processes that impact displacement efficiency. This research work assesses the...

Impact of clay mineralogy on the petrophysical properties of tight sandstones

A full petrographic and petrophysical characterization of tight sandstones has been conducted as part of ongoing study of Carbon Dioxide Enhanced Oil and Gas Recovery (CO₂-EOR/EGR) and CO₂sequestration. The main purpose of this study is to give novel perception into the interplay of the rock characteristics and fluid...

A Characterization of Tight Sandstone: Effect of Clay Mineralogy on Pore-Framework

Macro-, meso-, micro-pore systems combined with clay content are critical for fluid flow behavior in tight sandstone formations. This study investigates the impact of clay mineralogy on pore systems in tight rocks. Three outcrop samples were selected based on their comparative petrophysical parameters (Bandera, Kentucky, and Scioto). Our...