Abstract The sandstone units of the Early Cretaceous Lower Goru Formation are significant reservoir for gas, oil, and condensates in Indus Basin Pakistan. Even though these sandstones rocks hydrocarbon exploration, diagenetic controls on properties poorly documented. For effective production, appraisal a promising reservoir, diagenesis must be comprehensively analyzed first. this study, core sa...

Geological storage of CO2 in saline aquifers and depleted oil gas reservoirs can help mitigate emissions. However, leakage over a long period represents potential concern. Therefore, it is critical to establish good understanding the interactions between CO2–brine cement–caprock/reservoir rock ascertain for leakage. Accordingly, this work, we prepared unique set composite samples resemble cemen...

a study of the diagenetic evolution of sandstones from panyu low-uplift in the pearl river mouth basin was carried out to unravel the controls on shelf margin sandstone reservoir quality. the reservoir rocks, oligocene volcanic clastic sandstones of the zhuhai formation, have a burial depth of 2765 to 3440 m. 70 samples were studied using the granulometric analyses, x-ray diffraction (xrd) anal...

Abstract Pore structures determine reservoir storage capacity, control rock transportation characteristics and represent microscopic properties of the rock. Therefore, characterization quantification pore tight oil gas are primary importance for quality evaluation successful production these unconventional resources. In this study, we obtained X-CT images with two resolutions same sandstone stu...

This project aims to demonstrate techniques for quantitatively predicting the combined seismic signatures of CO2 saturation, chemical changes to the rock frame, and pore pressure. This will be accomplished (i) by providing a better understanding the reaction kinetics of CO2-bearing reactive fluids with rock-forming minerals, and (ii) by quantifying how the resulting long-term, CO2-injection-ind...

Cap rocks are dams which can prevent the upward movement of hydrocarbons. They have disparities and weaknesses including discontinuities, crushed areas, and faults. Gas injection is an effective mechanism for oil recovery and pore pressure. With increasing pore pressure, normal stress is reduced, and the integrity of impermeable boundaries (cap rock, fault, etc.) becomes instable. A successful ...

The degree of salinity in the hydraulic fracturing rejection fluid Shaximiao reservoir central Sichuan Basin is high, and underlying mechanism causing this not clearly understood. We evaluated rock structure tight sandstone, including composition, pore structure, ion diffusion, adsorption behavior, to determine how influences sandstone’s interaction with fluid. X-ray diffraction revealed that m...

Water quality along the Waratah Rivulet in the Woronora Lake Catchment, New South Wales (NSW), Australia, has been monitored during the last three years by the Sydney Catchment Authority. Water quality data shows changes in chemical composition due to cracking of streambeds and rockbars, and diversion of surface water into subsurface routes in the Hawkesbury Sandstone aquifer. Water quality ups...

Fluid injection into rocks is increasingly used for energy extraction and for fluid wastes disposal, and can trigger/induce small- to medium-scale seismicity. Fluctuations in pore fluid pressure may also be associated with natural seismicity. The energy release in anthropogenically induced seismicity is sensitive to amount and pressure of fluid injected, through the way that seismic moment rele...

—The study objective was to investigate the response of salmonid populations to disturbance in Oregon Coast Range streams in two rock types, basalt and sandstone. Salmonid abundance was estimated in a total of 30 km of channel in 10 Oregon Coast Range streams with similar basin areas (14–20 km2). These basins had a range of disturbance caused by timber harvest, fire, and salvage logging. Mean c...