... Abstract The improved oil recovery techniques, such as customized ionic composition waterflood or "smart-water" flood, are being developed to increment crude oil production. Counter-current spontaneous imbibition of brine into oil-saturated rock is a critical mechanism of recovery of the crude...

... models (CRIM, Bimodal, and SMD) were evaluated. Properties having major influence on these models are brine salinity, brine saturation, and Archie parameters m and n. Effects of these properties on the dielectric data interpretation models were studied systematically, by comparing the models’ outputs...

... recovery reservoir upstream oil & gas enhanced recovery ift efficiency surfactant concentration surfactant concentration united states government superactive surfactant summarize seawater brine chemical flooding methods experiment tensiometer enhanced oil recovery spectrum reduction...

..., efficient and low-cost method to screen many variables like flooding brine composition, reservoir temperature and aging history. We addressed this potential for the waterflooding of carbonate rocks. Using thermostated glass micro- models with rock-inspired ‘dual depth’ pore geometries as a basis, we...

.... Matching your injected water chemistry to formation water chemistry is very important, especially in high TDS geothermal brines. Incompatible total dissolved solids (TDS) concentrations will alter the ion carrying capacity, disturb the natural reservoir equilibrium and can lead to formation damage...

...), CO 2 , and brine under different operating conditions. To gain higher accuracy of the machine learning models, a sufficient dataset was utilized that was recorded by conducting a large number of laboratory experiments under a realistic pressure range, 0 – 25 MPa and the temperatures range, 298 – 343...

..., the viscosity decreased, while the oil-water interfacial activity increased. The viscosity of PolyS was higher than 10mPa∙s, and interfacial tension (IFT) was lower than 3×10 -2 mN/m at 2500 mg/L PolyS in the brine with a salinity of 66560 mg/L at 72°C. The middle phase emulsion was formed when mixing crude...

... of dissolved salts in the brine as well as the pH of the brine. Chemical reactions that may occur with the rock minerals (Kaolinite, Anorthite and Calcite) when adding the CO2 are prescribed as input into the simulator. Simulations also include effects of hysteresis and diffusion processes. Study shows...

... permeability in low permeability reservoirs. In acidizing operations, HCl reacts with and dissolves carbonate minerals to form high density calcium and magnesium brines. The post-stimulation fluid recovery of high-density brines can be difficult due to higher density, higher capillary pressures, unfavorable...

... hours. The dissolution rate of the dissolvable rubber sealing element was tested at 90 °C or 80 °C in brine. It was found that the tensile strength of the dissolvable rubber at high temperature was in the range of 800-3000 psi and the elongation of the dissolvable rubber at high temperature was higher...

... the temporary clay stabilization properties of 1-molar brines and is presented in Fig. 2 . Since 6% NaCl and 7% KCl brines are equivalent fluids from a temporary clay stabilization viewpoint, other issues such as environmental impact, application fluid performance, availability, and cost can be considered...

... dosed at a desired dosage rate before 250 ml of test fluids were added. For mixed phase (oil/brine 70/30) experiments, the brine was pre-sparged with CO 2 . In the mixed phase and hydrocarbon experiments, the crude was sparged with a mixed gas containing 1% H 2 S and 99% N 2 . The desired amount...

... achieve the high quality of isotope analysis. equilibrium Upstream Oil & Gas oxygen isotope TDS isotope co 2 strategic planning and management Brine salinity Petroleum Compound society of petroleum engineers isotopic characterization petroleum formation water background hand o...

... tests were performed, such as inhibitor compatibility with the formation brine and inhibitor efficiency compared to the scale using dynamic tube blocking. Laboratory test procedures are presented in the following sections. Abstract A strategy combining fracturing and downhole scale inhibitor...

... After aging in the crude oil for 65 days, the cores were flooded with the fresh D 2 O brine to residual oil saturations at 75°C and were cooled to ambient temperature while the D 2 O was injected. A final T 2 scan was performed. Mass balance had been monitored by weighing the cores throughout...

... that influence CO 2 solubility, detailed information about X field gas and aquifer brine compositions are well determined prior to the solubility measurement. Utilizing lab facilities at Heriot-Watt University (HWU), measurements were conducted at T=423.15 K and pressure at 36.0 MPa to mimic the X field aquifer...

... experiment application flow in porous media Brine gpt gas flow base case interfacial tension surfactant microemulsion reduction KCl permeability formulation surface tension Introduction Hydraulic fracturing has always been associated with significant volumes of fracturing fluid invading...

... formulation was developed and blended in a pilot plant. The efficacy of the scavenger was evaluated in sour brine, crude oil and mixed production fluids from different sources. Sulfide concentrations before and after reactions in headspace were measured by using Dräger gas detection tubes (ASTM D5705...

... a thin and ultra-low permeable filter cake. The versatility of the developed polymer allows the new system to be formulated at a wide range of densities using most conventional oilfield brines including monovalent and divalent halide and formate brines. The clay-free high temperature drilling fluid has...

... to determine the porosity and calibrated with RCA to ensure the reliability of digital core analysis results. After scanning, both plugs were saturated with synthetic brine with similar composition as the fields' formation brine and aged with supercritical CO 2 at reservoir temperature and pressure for 45...