... of shale samples from various reservoirs were measured as a function of saturation (vacuum dried and partially brine saturated) and as a function of salinity at frequencies between 1 MHz and 250 MHz. The samples were measured dry and then allowed to imbibe brine until an equilibrium saturation was reached...

... energy economics upstream oil & gas complex reservoir shale gas formulation clastic rock rock type drilling fluid management & disposal synthetic brine spontaneous imbibition surfactant no-ionic surfactant nano sizer outcrop unconventional resource technology conference micelle nano...

... spectroscopy (EDS) was used to determine spatial mineralogy prior to CO 2 exposure. Samples were then saturated with brine solutions and exposed to supercritical CO 2 at a pressure of 3000 psi and temperature of 65 °C for up to 3 weeks. Samples were then re-imaged in the same areas imaged prior to CO 2...

... Abstract The utilization of Carbon Dioxide (CO 2 ) has been recognized as a viable technique for EOR and carbon storage applications, particularly in unconventional reservoirs such as the Bakken Formation. The chemical reactivity of the supercritical CO 2 -brine-minerals system is a crucial...

... through the center to create a smooth fracture and the second is fractured along the calcite-filled fracture to generate a rough fracture. The topography and mineral distribution of the fracture surface is analyzed before a reactive core-flood with an equilibrated acidic brine is conducted. The effluent...

... imbibition is the main mechanism by which fracture fluid enters the rock. Herein we study the spontaneous imbibition of brine to determine the flow mechanism and uptake capability of fracturing fluid in unconventional source rocks. We used NMR spectroscopy and imaging methods to track the spatial...

... from the Marcellus formation represent different mineralogies and structural features. In flow-through experiments, lab-generated brine and HCl-based fracture fluid (pH=2) were injected sequentially under effective stress (up to 500 psi) at reservoir temperature (80°C). SEM-EDS results confirmed...

... produced water when it is reused for fracturing and EOR. In this paper, we treated sodium chloride (NaCl) solution using an electro-oxidation (EO) treatment process and evaluated how the treatment changes brine properties and how the wetting characteristics change with treated brine. The brine properties...

... fluids. To measure total tortuosity, a pair of companion plugs, from either Berea SS or the Wolfcamp, were hydrostatically pressurized to 100% saturation, separately with dodecane and 2.5wt% KCl brine (both fluids have NMR Hydrogen Index - HI of 1). Each saturated specimen was then imbibed with its...

... organic-shale since porosity is typically low. A new method is developed to estimate permeability through the combination of porosity measurements, tortuosity estimation and MICP pore-throat size measurements. Water-saturated cores are submerged in D 2 O (i.e. heavy water) brine and the decay in NMR...

... In this section, we discuss the details pertaining the sample preparation methodology, gas/ brine/ rock/ chemical systems, experimental setup and procedures used in this work. Rock and Fluid Characterization Reservoir core samples from Lower and Upper Eagle Ford gas window were used for core characterization...

... that have micro-cracks or artifacts that may impact the measurements. Once samples have been qualified, as-received NMR scans on samples are performed to establish as received fluid saturations. These samples are then saturated with liquid hydrocarbons, and/or brines through a combination of vacuum-assisted...

...-wet systems. The process consisted of saturating as-received twin identical plugs with brine and crude, or triplets with brine, crude and decane and monitoring weight gain over time. When the weights were stabilized in a given liquid, the relative saturation of different fluids is measured using 2D...

... fracturing treatments result in localized changes in fluid saturation near wellbores and fractures. enhanced recovery upstream oil & gas spontaneous imbibition test reservoir simulation brine flow in porous media fluid dynamics complex reservoir corey exponent relative permeability...

... bitumen lsp flooding enhanced recovery upstream oil & gas lsw flooding hsp flooding residual oil saturation oil sand complex reservoir brine viscosity polymer flooding incremental oil recovery polymer solution hsw flooding oil recovery chemical flooding methods waterflooding...

... or micro emulsion. fracturing materials complex reservoir drag reduction enhanced recovery proppant fluid dynamics flow in porous media fracturing fluid experiment liang urtec 2899 wettability application liquid nanofluid brine imbibition surfactant lnf hydraulic fracturing...

... drilling fluid selection and formulation reservoir characterization drilling fluid chemistry drilling fluid management & disposal drilling fluids and materials structural geology brine shale marine shale tuscaloosa marine shale stability stabilization drilling fluid property...

... considered, in resistivity models, to be distributed in laminated or dispersed forms. Additionally, conventional resistivity models do not incorporate conductive components other than brine. Such assumptions can lead to uncertainty in fluid saturation assessment in organic-rich mudrocks. Hence, we introduce...

... mechanism log analysis Brine Pore Fluid relaxation correlation time kausik porosity shale formation frequency organic matter investigation kerogen magnetic resonance bulk n-dodecane relaxation time core sample NMR map research study URTeC: 203 A High Frequency NMR Investigation of Eagle...

... known as osmotic pressure acting on the matrix that also creates an imbalance in the stress state. The native formation fluid with salinity of 60,000 ppm NaCl has been used while 1,000 ppm NaCl brine is utilized to simulate the low salinity injection fluid under triaxial stress conditions in this phase...