Abstract Two-phase oil/water relative permeability measurements were conducted at ambient and high temperatures in two different rock-fluid systems; one using a clean Poly-Alpha-Olefin (PAO) oil the other with Athabasca bitumen. The tests performed sand-pack confining pressure of 800 psi, deionized water as aqueous phase. Both JBN method history match approach utilized to obtain from results isothermal displacement tests. contact angle IFT carried out assess any possible wettability...

Summary The expanding solvent-steam-assisted gravity drainage (ES-SAGD) is a newly proposed thermal recovery technique showing promising efficiency in terms of smaller steam-to-oil ratio and greater production rate to recover heavy oils bitumen from oil-bearing formations, where solvent coinjected with the steam SAGD process. Numerical simulation ES-SAGD process requires reliable relative permeability data. number reported measurements involving systems limited literature, mostly because...

Thermal recovery processes for heavy oil exploitation involve three-phase flow at elevated temperatures. The mathematical modeling of such necessitates the account changes in rock–fluid system’s behavior as temperature rises. To this end, numerous studies on effects relative permeabilities have been reported literature. Compared to oil/water-relative permeabilities, (and hence, data) gas/oil-relative are limited. However, role both gas/oil and has a topic much discussion, contradiction...

The steam-assisted gravity drainage (SAGD) process is among the most applicable thermal enhanced oil recovery (TEOR) methods in North American heavy reservoirs. In addition to improving mobility through viscosity reduction, high-temperature condition that a TEOR method causes may significantly alter fluid flow performance and behavior, as manifested by relative permeability fluids reservoir. Therefore, SAGD cyclic steam stimulation (CSS), permeabilities can change within temperature-gradient...

Low-salinity water (LSW) flooding is one of the newest EOR techniques which has more advantageous over other techniques. This research employed a heterogeneous synthetic three-dimensional reservoir to model LSW for two-phase system including brine (high salinity low salinity) and oil. The obtained results show that exact determination threshold its wettability alteration coefficients are very important since they affect maximum value oil recovery. recovery been varied between 55.79 60.34%...

Abstract Gas is stored in tight reservoirs both as a free gas occupying the pores, and an adsorbed on rock matrix. Adsorbed exhibits liquid-like densities resulting significantly more being surface. This research aims to highlight effects of competitive adsorption during Huff-n-Puff enhanced recovery (EGR) activated carbon achieve maximum recovery. Pure methane was initially by sample four simple pure component stages. The then produced primary production stage, allowing some desorb from...

Summary The wetting condition of the reservoir rock is key to success any EOR technique and ultimate oil recovery. Wettability dictated by surface chemistry related interactions between fluids which determines stability water film phase. Streaming potential measurement one electrokinetic techniques used determine average zeta porous can provide reliable information on fluid-rock interaction wettability state surface. has recently been introduced in reservoirs applications there are still...

The aim of this study is to apply the regular solution theory with a liquid-liquid equilibrium model asphaltene precipitation and estimate onset point for four Canadian bitumens diluted by n-heptane using fourparameter equation state.The heavy oil/bitumen characterized in terms SARA fractions divided into different pseudo-components as Saturates, Aromatics, Resins, Asphaltenes.To calculate values solubility parameters, molar volume density each fractions, four-parameter state developed...

Abstract Vapor Extraction (VAPEX) is one of the most promising solvent-based methods to tackle issues associated with SAGD. Asphaltene precipitation due solvent injection and its in-situ upgrading plays an essential role in VAPEX. As VAPEX chamber expands laterally vertically, speed front movement angle boundary varies. This research investigates rate asphaltene deposition using different solvents. In this research, three experiments are carried out a physical model bitumen solvents...

Abstract CO2 dissolution in water/brine at various operating conditions is of essential interest for environmental and geochemical applications such as sequestration brine-bearing aquifers. Solubility/swelling CO2-brine systems can be determined by experimental data or the available correlations modelling packages. However, models only used limited situations, therefore, may not applicable a wide range conditions, particularly different salinities. In addition, solubility swelling literature...