Understanding the role of brine ionic composition on oil recovery by assessment of wettability from colloidal forces

MJ Alshakhs, AR Kovscek - Advances in colloid and interface science, 2016 - Elsevier
The impact of injection brine salinity and ionic composition on oil recovery has been an
active area of research for the past 25 years. Evidence from laboratory studies and field tests …

Estimation of dynamic relative permeability and capillary pressure from countercurrent imbibition experiments

JM Schembre, AR Kovscek - Transport in porous media, 2006 - Springer
Direct laboratory measurements of in situ water-phase saturation history are used to
estimate relative permeability and capillary pressure functions. The magnitude of so-called …

Spontaneous imbibition and wettability characteristics of Powder River Basin coal

T Chaturvedi, JM Schembre, AR Kovscek - International Journal of Coal …, 2009 - Elsevier
The wettability of coal is studied at scales that range from the microscopic to the core. While
contact-angle measurements define wettability at microscopic (pore) and core scales …

Interrelationship of temperature and wettability on the relative permeability of heavy oil in diatomaceous rocks

JM Schembre, GQ Tang, AR Kovscek - SPE Reservoir Evaluation & …, 2006 - onepetro.org
The evaluation of thermal-recovery processes requires relative permeability functions, as
well as information about the effects of temperature on these functions. There are significant …

An experimental study of the impact of injection water composition on oil recovery from carbonate rocks

MJ Alshakhs, AR Kovscek - SPE Annual Technical Conference and …, 2015 - onepetro.org
An experimental investigation is presented that shows oil recovery and wettability changes
accompanying alteration of injection water salinity. The study aims to provide a better …

A comprehensive insight on the impact of individual ions on Engineered Waterflood: With already strongly water-wet sandstone

X Wang, W Liu, L Shi, Z Zou, Z Ye, H Wang… - Journal of Petroleum …, 2021 - Elsevier
Engineered Waterflood (EWF) has drawn increasing attention as an emerging economic-
friendly technique. However, the underlying mechanisms still remain ambiguous. Wettability …

Effect of temperature on relative permeability for heavy-oil diatomite reservoirs

JM Schembre, GQ Tang, AR Kovscek - SPE Western Regional …, 2005 - onepetro.org
Thermal recovery is the most utilized enhanced oil recovery method. The modeling of
thermal recovery processes not only requires relative permeability functions, but also …

Fines migration and compaction in diatomaceous rocks

JRP Lagasca, AR Kovscek - Journal of Petroleum Science and Engineering, 2014 - Elsevier
Reservoir rocks typically have clay and other fine material attached to pore surfaces. Fines
mobilization is advantageous in that the removal of fines from pore walls exposes water-wet …

Steady-state relative permeability measurements, temperature dependency and a reservoir diatomite core sample evolution

B Vega, AR Kovscek - SPE Annual Technical Conference and …, 2014 - onepetro.org
Abstract Evaluation of thermal-recovery processes requires relative permeability functions,
how such functions change with temperature, as well as the evolution of rock permeability …

A Mathematical Analysis of the Mechanism of Ultrasonic Induced Fluid Percolation in Porous Media: Part I

I Najafi - SPE Annual Technical Conference and Exhibition?, 2010 - onepetro.org
This work concerns with experimentally and analytically investigation of free gravity
drainage process in porous media under the influence of ultrasonic wave radiation. Glass …