... reduction concentration diffusion resistance ift permeability experiment microemulsion solubilization Three screw-top test tubes containing equal volumes of imbibition fluids and tetradecane were tightly sealed and inverted several times to ensure thorough mixing of the oil and water phases...

... of measured temperature of rock samples, gas flow rate, and concentration of hydrogen and other generated gases are monitored. Deuterium oxide, or the so-called heavy water (D 2 O), is used to track the sources of hydrogen from methene and water. A rapid temperature increase is identified for the sandstone...

... analysis and production data analysis, aiming to find the correlation between fluids leak-off rate, flow-back salt concentration, fracture height, fracture complexity and the number of BPs. Results showed that fracture propagation is a competition controlled by stresses and rock BPs. Fracture propagation...

... discussed briefly. There is ample data to show that the CO2 concentration in the atmosphere is unrelentingly increasing, and the annual global CCS is about 0.1% of the 40 billion tonnes emitted. As much as 30% of the carbon dioxide captured is injected/re-injected into oil reservoirs for oil production...

... conducted at high temperature and lower concentrations to observe change in behavior and performance. Lactic acid performance was analyzed by comparing pore volumes to breakthrough (PV bt ) with previous HCl experiments. Lactic acid was found to be more efficient than HCl at injection rates below optimum...

... fluid dynamics geology sedimentary rock upstream oil & gas geologist united states government carbonate reservoir subsurface storage co 2 surfactant foam flooding injection np2 flow in porous media chemical flooding methods stability experiment concentration complex...

... corefloods evaluating the effects of foam quality, injection velocity, surfactant type and concentration on foam generation and strength at reservoir conditions. We also aim to reveal real-time foam displacement mechanisms with combined positron emission tomography (PET) and computed X-ray tomography (CT...

... change concentration complex reservoir rock type sandstone chemical flooding methods geological subdiscipline fracture subsurface storage modeling & simulation production monitoring reservoir characterization injection dolomite reservoir scenario 1 brine precipitation scenario 2...

... chemistry petroleum engineer mod concentration geological subdiscipline strength optimization zamora middle east petroleum engineering ppg Introduction Many techniques are used to solve the lost circulation problems. For instance, the cost of drilling a well is doubled in carbonate...

... concentrations. In this paper, we summarize a case study where enhancement of foam stability utilizing degradable fiber showed some improvement in proppant placement performance. Degradable polymer fiber with novel polymer rearrangement was utilized to enhance the performance stability and used with the base...

... by using the oscillating-drop-profile method. The interfacial elastic and viscous moduli were studied at pressures from ambient pressure up to 26.7 MPa, temperatures of 298 K and 348 K, SDS concentrations below the CMC (0.05 mass% and 0.15 mass%) and above the CMC (0.50 mass%) and oscillating frequencies...

.... Measurement and Comparison of Static Settling Velocity Dependence on FR concentration Abstract This paper presents a novel method for quantitatively measuring the static proppant-settling velocity in hydraulic fracturing fluids through digital image analysis. The method developed is reliable...

...-circulating well, where the monitoring and accurate prediction of pressure changes in the well are essential. This study investigates the distribution of gas influx and Interfacial Area Concentration (IAC) during gas migration through full-scale experiments and numerical simulations. Downhole gas influxes...

... pilot was introduced as a primary recovery method with continuous polymer injection at ~25 cP (~2000 ppm polymer concentration). Injection rates varied from 30 to 50 m 3 /d/well, based on the target injection volume of 5 to 10% of effective pore volume (PV) per year. As a result, field water cut has...

... Discrete Element Method (CFD-DEM) model to simulate the fiber-laden fluid flow process in millimeter-wide fractures. The effect of fiber concentration, fracture roughness, and fiber stiffness on plugging capability is evaluated. It is found that, although fibers are known to create net-like structures...

... concentration leak metec methane methane concentration methane leak methane emission plume operator colorado state university upstream oil & gas artificial intelligence detection leak detection information figure inversion algorithm methane emission technology evaluation center...

... core flooding with maximum Incremental Oil Recovery of 28 % after water flooding. geology upstream oil & gas asia government mineral geologist waterflooding enhanced oil recovery nanofluid united states government india government enhanced recovery nanoparticle concentration...

... temperatures, concentrations of monovalent and divalent salts, and a synthetic formation brine. Then, bulk foam stability investigations were carried out under ambient and thermobaric conditions. The morphology and texture of the foam were assessed using microscopic examinations. The ideal nano-augmented...

... under influence of gravity in short time, creation of bio demulsifiers based on chosen sources of bio surfactants like for example soapwort, coconut betaine and lauryl glucoside, and mixed with brine (around 30 % of NaCl), choosing optimal concentration of source of surfactant which would allow to break...

... 18.9 - 20.4 ppg to 11,107 ft. - 15,550 ft. targeting new formations with many anticipated challenges like high pressure 10,900 - 14,500 psi, high temperature 220 - 260 degree F, and ultra-sour reservoir fluid with H 2 S concentration up to 40%, super saturated saline water with water cut up-to 100...