... process involves the use of surfactant and gas to achieve the mobility control required to displace the micro-emulsions and the crude oil. The optimal formulation of surfactants is identified to obtain good oil/water microemulsion phase behavior and desirable high optimum salinity. The latter feature...

... volume [ml] 311 252 1008 Permeability (brine) [mD] 1500 90 21 Liquids Crude oil from two different fields with different formation brine compositions and reservoir temperatures were used in the experiments (see Table 2 ). The experiments in the short cores used the conditions...

... waterflooding concentration enhanced recovery Austad experiment acid Upstream Oil & Gas brine concentration oil emulsion formation brine solution interaction acid participation fraction Oil Recovery emulsion formation composition crude oil participation final oil...

... the reservoirs range suitable to carry out MEOR. enhanced recovery Upstream Oil & Gas indigenous microorganism Acta Petrolei Sinica alet al microorganism microbial method oil field viscosity crude oil enhanced oil recovery field test reservoir permeability microbe flooding microbial...

... polymer viscosifying power, enabling a reduction in required chemical volumes, as well as (3) a lower risk of achieving over-optimum salinity conditions in the field. This paper presents a series of core-flood experiments using light crude oil with a low Total Acid Number (TAN) and two different sandstone...

... Abstract The oil/water interfacial tension (IFT) is a key index of the properties of chemical enhanced oil recovery (EOR) displacement systems with surfactant. The studies showed that different oil and water often required different surfactant formulations to reduce IFT. The crude oil...

...Crude Oil Cores Indiana Limestone outcrop cores were purchased from Kocurek Industries. The length and diameter of the cores were 12 inches and 1.5 inches, respectively. The cores were cut to the desired length before the experiments. The permeability for these cores were typically between...

... pressure and also drives the crude oil to the producer well. At the end of the secondary oil recovery phase, capillary and viscous forces keep a substantial amount of residual crude oil trapped in the reservoir rock. The ratio between these forces is described by the capillary number Nc: N c...

...Effects of the dissolution oil/brine and oil/gas relative permeability curves Experiment description The target reservoir belongs to light black oil with high paraffin content. The reservoir temperature is 97.53°C, and the formation pressure is 22.64MPa. The viscosity of crude oil...

... Abstract Laboratory simulation experiments of air injection with low temperature (65°C, 17 MPa) for a low permeability (4.5 mD) reservoir was conducted by using crude oil from the Dagang Oilfield, Northern China. The initial oil density and viscosity are 12 API and 74.5 mPa.s, respectively...

... mapping of the structures in solution. The experiments have been conducted using two different methodologies involving cryogenic-SEM and cryogenic-TEM. In addition, different fluids as crude oil, seawater and smartwater are observed at interfaces. Results from this study revealed for the first time...

... in field applications, including early gas breakthrough, corrosion, CO2 availability and high costs. immiscible co 2 oil reservoir field application immiscible flooding enhanced recovery oilfield heavy oil recovery crude oil Upstream Oil & Gas concentration co 2 heavy oil reservoir...

... conventional polymer when prepared with formation water. Amphoteric surfactant AS-13 and anion-nonionic surfactant SPS1708 were selected and ultra-low interfacial tension between crude oil and formation water can be obtained in alkali-surfactant-polymer (ASP) and alkali free surfactant-polymer (SP) systems...

... & Gas Efficiency experiment waterflooding concentration increment variation coefficient crude oil enhanced recovery injection pressure co 2 carbon dioxide generation technology viscosity gas generating efficiency Injection Rate carbon dioxide generation in-situ carbon dioxide generation...

...% crude oil and 80% formation water was treated with indigenous microbes for 21 days under anaerobic condition using molasses (5%) as nutrients. The microbially treated and the un-treated oils were analysed geochemically by using Gas Chromatography-Mass Spectrometer (GC-MS). The oil density, viscosity...

... (extracted from a Middle East crude oil) and natural surfactant (stearic acid, SA). The effects of water injection rates were also investigatd to address the oil recovery efficiency in the cores and assess the water/oil/rock interaction as a function of injection rates. Imbibition process with various water...

... result machine learning neural network interpretation result template asp flooding crude oil enhanced recovery chromatographic fingerprint technique oil production chromatographic fingerprint data connectivity chromatographic fingerprint reservoir interpretation template fingerprint...

... Abstract A series of laboratory investigation on factors affecting Enhanced Oil and Gas Recovery and CO<sub>2</sub> geo-sequestration were conducted. The coreflooding experiments were done using a relatively heavy crude oil (18& API), a number of brines of 0.18%-2.5% NaCl...

... concentration inhibitor PPM viscosity demulsifier experiment flow rate stability Production Chemistry polymer emulsion scale inhibitor bottle test formulation shear rate spe 165310 polymer solution crude oil synthetic water Background. Enhanced oil recovery (EOR) aided by chemicals has...

... of this study is to investigate the potential of MEOR method in UAE carbonate reservoirs. Two Bacillus strains were incubated at temperatures from 35 to 55°C, and their effects on crude oil properties and recovery were tested. It was discovered that neither strain could effectively reduce crude oil viscosity...