Each year surface mining in Appalachia disrupts large areas of forested land. The Surface Mining Control and Reclamation Act requires coal mine operators to establish a permanent vegetative cover after mining, and current practice emphasizes soil compaction and planting of competitive forage grasses to stabilize the site and control erosion. These practices hinder recolonization of native hardw...

Abstract Critical salt concentration (CSC) is the minimum of injected water used for different oil recovery operations, below which fines migration initiates within sandstone reservoirs having clay contents and could be one potential causes formation damage. This paper estimated CSC Berea sandstone-NaCl brine system experimentally by using DLVO modeling based on Van der Waals electric double la...

An image processing workflow is presented for the characterization of pore and grain size distributions in porous geological samples from X-ray microcomputed tomography (μCT) scanning electron microscopy (SEM) images. The five sandstone including Berea, Buff Nugget, Castlegate, Bentheimer, one carbonate sample, Indiana limestone, are extracted using proposed workflow. Two-dimensional acquired S...

Abstract The study of the pore space structure a porous medium has been very much improved with aid microtomographic imaging and its analysis through image processing. In this paper, technique to identify predominant direction (PPD) in is introduced according that can be partition as vertical (V), horizontal (H) or diagonal (D). PPD developed for 2D 3D spaces based on microCT images used both, ...

We demonstrate a pore-to-reservoir simulation methodology that does not pre-suppose the functional form of the upscaled transport equations and which automatically accounts for uncertainty in the reservoir description. Single-phase transport is modeled as a continuous time random walk. Particles make a series of hops between nodes with a probability wðtÞdt that a particle will first arrive at a...

Quantitatively assessing seismic attenuation caused by fluid pressure diffusion (FPD) in partially saturated rocks is challenging because of its sensitivity to the spatial distribution. To address this challenge we performed depressurization experiments induce exsolution carbon dioxide from water a Berea sandstone sample. In first set used medical X-ray computed tomography (CT) characterize At ...

Wettability and NMR surface relaxation are related to each other. Wettability controls the fluid distribution in porous media. NMR surface relaxation dictates that the fluid in contact with the mineral surface has a relaxation time shorter than its bulk value. In this study, first, the nature of wettability effect on NMR responses was demonstrated by a parameter ρ2, eff, the effective surface r...