berea sandstone cores

A Novel In

The new insitu-generated acid treatment was applied to stimulate two types of sandstone cores (Grey Berea and Bandera). X-Ray Diffraction (XRD) was performed on the sandstone cores to analyze their carbonate and clay content. Coreflood studies were conducted to investigate the impact of the treatment fluid on the permeability of outcrop and Get price

Effect of Sterilization DryHeat Autoclaving Bacterial

Municipal Landfill. BCI-1NS was isolated from a Berea sandstone core (Cleveland Quarries, Amherst, Ohio). Both isolates are morphologically similar to cells of the genus Bacillus (7). The growth medium (medium E with 0.1% [wt/vol] NaNO3 and 0.05% [wt/vol] yeast extract) and cultivation Get price

Copyright by Archawin Aroonsri 2014

4.1.2.2 Experiments in fractured Boise sandstone cores ..84 4.1.2.3 Experiments in fractured and unfractured Berea sandstone cores (~200 mD) ..87 4.1.2.4 Experiments in Indiana limestone cores (7 mD)..93 4.1.3 Foam Generation Experiments with Supercritical CO 2 Get price

CO2 Wettability of Sandstones: Addressing Conflicting

Benson (2013) performed core‐ﬂooding experiments on Berea sandstone rock cores that all showed pre-dictable water‐wet capillary scaling behavior indicating no changes of the water‐wet conditions in the presence of scCO 2. Recent work by Al‐Menhali et al. (2015) investigated the Get price

Sodium

Tertiary oil recoveries were compared for water-wet and oil-wet Berea sandstone cores (300-500 md permeability, 20-22 percent porosity). A coating of Dri-Film 104 (a polysiloxane polymer) was used in Berea cores to obtain the oil-wetting cores. The surfactant solution contained petroleum sulfonate (average equivalent weight 390 to 440 Get price

Effect of seawater ionic composition modified by

Sep 01, 2017The Berea sandstone has a quartz-based composition, and about 6% of this composition is basically kaolinite, . Aluminum is also found in montmorillonite clays . However, in the investigated Berea sandstone sample, peaks characteristics of montmorillonite (2θ 10, ) were not found. Peaks of other clay minerals were not noticeable either. Get price

Nanomaterials

Berea Sandstone outcrop cores obtained from Koucurek Industries Inc., Caldwell, TX, USA were used as the porous media for performing injection experiments. Zetasizer Nano ZSP from Malvern Instruments (Malvern, Worcestershire, UK) was used to measure the average particle size and zeta potential of the NPs and the zeta potential of the Berea Get price

Special Section: Scaling in Soil Diﬀ usivity and Sorp vity

involving water imbibition into initially dry Berea sandstone cores. Berea sandstone is naturally occurring sedimentary rock used extensively as a standard porous medium for petrophysical investi-gations in the geology and petroleum engineering fi elds (Churcher et al., 1991). It is a medium- to fi ne-grained terrestrial sandstone Get price

Alkaline

This is the first report of application of Alkali-Biosurfactant-Biopolymer from Oman, showing additional oil from both native cores (from the Omani oil field) and Berea sandstone cores. AB - In present paper we ereport the evaluation and the application of Alkaline-Biosurfactant-Biopolymer (ABsBp) applications for enhancing oil recovery. Get price

DESIGN, SET

Extensive preliminary experiments were carried out on core samples of both Berea sandstone and Cream Chalk carbonate to evaluate the effect of rock heterogeneities and treatment conditions on acidizing mechanisms. iv The results obtained from the experiments showed that the temperature activates the reaction rate of HF-HCl acid mixtures in Get price

Efficiency of low salinity polymer flooding in sandstone cores

Several coreflood experiments were conducted to study the efficiency of low salinity water flooding and low salinity polymer flooding in mixed-wet Berea sandstone cores. All the core samples were aged with a crude oil at 90oC for 30-60 days before the tests. All the polymer floods were conducted in Get price

Scale Formation Due to Water Injection in Berea Sandstone

This study was conducted to investigate the permeability reduction caused by deposition of calcium, strontium and barium sulfates in Berea sandstone cores from mixing of injected Malaysian sea waters (Angsi and Barton) and formation water that contained high concentration of calcium, barium and strontium ions at various temperatures (60-90C) and differential pressures (75-100 psig). Get price

The Mechanism of Improved Oil Recovery by Sequential

sandstone cores at T d= 60oC at 6 PV of seawater injection Limestone. Bentheim Sandstone. Berea Sandstone (BS) Reservoir. Confirmation of Reduction in Residual Oil Saturation by Sequential Waterflooding a mixed-wet Berea core • T a = 75 o C • t a = 14 days • T d = 60 o C • WP Crude Oil / Get price

DRILLING SPECIALTIES COMPANY TECHNICAL SERVICES

Deflocculant on the return oil permeability of Berea sandstone cores. Filtrates were used because it is well known that clay and barite in water based drilling fluids can cause significant damage to pay zones. Therefore, there is little that can be done to avoid damage from mud solids other than running low-solids Get price

Novel Approach for Sandstone Acidizing Using in Situ

Core flooding experiments were performed using Gray Berea sandstone cores (6 in. length and 1.5 in. diameter). A preflush stage of 5 PV of 7 wt % HCl was injected to remove any calcite content in the core. The main chemicals were then flushed for 3 successive cycles of 1 PV each. Get price

THE DEVELOPMENT AND IMPROVEMENT OF INSTRUCTIONS

on sandstone cores featured by different mineralogy with dimensions of 1.5 in. 6 in. were also conducted at a flow rate of 5 cm3/min. Formic or acetic acids were used in preflush stage to remove the carbonates. A series of formic-HF acid mixtures with different ratios and concentrations were tested, and temperature varied from 77 to 350 Get price

Novel Approach for Sandstone Acidizing Using in Situ

Core ﬂooding experiments were performed using Gray Berea sandstone cores (6 in. length and 1.5 in. diameter). A preﬂush stage of 5 PV of 7 wt % HCl was injected to remove any calcite content in the core. The main chemicals were then ﬂushed for 3 successive cycles of 1 PV each. To assure core integrity, scratch tests and NMR scans Get price

Calculating Effective Elastic Properties of Berea

The average CT numbers of such regions are paired to the pseudotarget densities to create a CT number‐to‐density conversion function. After density‐to‐porosity and porosity‐to‐elastic properties conversion, we simulate wave propagation on two Berea sandstone cores to estimate effective P and S wave velocities. To assess uncertainty Get price

Magnetic

Summary. Fines migration is a phenomenon of practical importance in the petroleum-production and drilling industry. The movement of clay particles, induced by incompatible aqueous-phase chemistry or high flow rate, obstructs pore throats downstream of the fluid flow, leading to permeability reductions that can be as large as two orders of magnitude. Get price

Evaluation of mechanical rock properties using a Schmidt

the following sizes: NX size (54 mm diameter) cores for Maresha chalk, Cordoba-Cream limestone, Berea sandstone, Gevanim syenite and Mt Scott granite; a 40 mm thick slab of Carrara marble and a 100 mm thick block of Indiana limestone. Each sample was inspected for macroscopic defects to avoid testing near fractures or material inhomogeneities. Get price

Alkaline

This is the first report of application of Alkali-Biosurfactant-Biopolymer from Oman, showing additional oil from both native cores (from the Omani oil field) and Berea sandstone cores. AB - In present paper we ereport the evaluation and the application of Alkaline-Biosurfactant-Biopolymer (ABsBp) applications for enhancing oil recovery. Get price

CORE

The relationship of penetration time to the square of the length of the core suggested that cells penetrated high-permeability cores as a band and low-permeability cores in a diffuse fashion. The motile Enterobacter aerogenes strain penetrated Berea sandstone cores three to eight times faster than did the nonmotile Klebsiella pneumoniae strain Get price

Berea Sandstone Cores

Berea Sandstone™ Petroleum Cores For the past 30 years, Berea Sandstone™ core samples have been widely recognized by the petroleum industry as the best stone for testing the efficiency of chemical surfactants Berea Sandstone™ is a sedimentary rock whose grains are predominantly sand-sized and are composed of quartz held together by silica. Get price

Fluids, Cores, and Flooding Procedures

The Berea core (specifically, the "first Berea core" discussed in Refs. 1-3) had a permeability of 0.47 darcys and a porosity of 22%. The polyethylene core had a permeability of 8.8 darcys and a porosity of 40%. Each core was initially saturated with wetting fluid (brine for Berea, oil for polyethylene). Get price

FORMATION DAMAGE IN SANDSTONES CAUSED BY CLAY

of Berea sandstone was not only strongly dependent on the ion in solution, but also on the sequence or order of flooding from one liquid to another. For example, a sodium-saturated core was sensitive to fresh water but if sodium chloride brine was first displaced with a calcium chloride brine the core was Get price

Porosity and permeability for the Berea sandstone

The core is a Berea sandstone and it has the shape of cylinder. The core is put into a sleeve for permeability measurement where the conﬁning pressure is 20.0 bar with respect to helium so helium injection required. The ﬂow rate Qis 10ml per minute. The sleeve also uses ﬂuids water or Exxsol D60 oil for the absolute permeability measurement. Get price

Digital rock physics: numerical prediction of pressure

Cylindrical samples of 25.4 mm in diameter were cored from a 10 3 cm 3 cube of homogeneous Berea sandstone for the acoustic measurements. These samples were cut to about 40 mm in length, and the end faces were ground flat and parallel with 5 μm precision. The cores Get price

Magnetic

Summary. Fines migration is a phenomenon of practical importance in the petroleum-production and drilling industry. The movement of clay particles, induced by incompatible aqueous-phase chemistry or high flow rate, obstructs pore throats downstream of the fluid flow, leading to permeability reductions that can be as large as two orders of magnitude. Get price

Berea Sandstone Core

A Berea sandstone core of 5.308 cm length and 3.874 cm diameter was used. The porosity was 19.01% and the nitrogen permeability was about 200 mD. This core plug was repeatedly used for tests at different temperatures and for gas and nitrogen. After each test, the core was cleaned by a Soxhlet extractor for the next test. Wolfcamp crude oil was used. Get price