Simulating Core Floods in Heterogeneous Sandstone and Carbonate …
The Bentheimer sandstone exhibits a simple porosity heterogeneity orientated as a single layer parallel to the flow direction. The Bunter sandstone exhibits characteristics of early diagenetic processes (Brook et al., 2003). As such, our sample features noticeable heterogeneity in porosity, which can be grouped into layers …
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Impure CO2 storage reactions of sandstone, …
Impure CO 2 storage reactions of sandstone, mudstone and carbonate cemented cores: Experimental CO 2 SO 2 NO X O 2 reaction metal mobilisation and fate
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Open Access proceedings Journal of Physics: Conference …
on Berea sandstone cores and dolomite samples with dimensions of 1.5 in × 3 in were conducted at a flow rate of 1 cc/min under 150oF temperature. ... used as an alternative to HCl acid in carbonate and sandstone acidizing. [13, 14] performed experimental study with different acid combinations, replacing conventional mud acid. …
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Thin section analysis
Conventional cores are most desirable because samples can be collected from specific intervals of interest determined by a combination of direct observation of physical ... (point counting) is recommended for both carbonate and sandstone reservoir rocks. In addition, quantitative estimation of textural parameters (grain size and ...
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Digital core analysis: Improved connectivity and permeability
Core plug A: laminated sandstone. Core plug A represents the reservoir sandstone in well X-4. 3-D visualization of core plug A in Fig. 10 shows that carbonate minerals make up 16% of core plug total volume. However, mini plug A, which we extracted from the sandstone regions of core plug A, does not sample any of the carbonate …
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Adsorption of Crude Oil Components onto Carbonate …
The sandstone outcrop cores of unknown origin were provided by TotalE&P,France,andcontainedapproximately10wt%clayminerals (mostly illite) and 30 wt % feldspar minerals in the form of albite (Na-feldspar). The sandstone mineralogy was obtained by X-ray diffraction measured on a rock piece sampled nearby the core T15 …
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carbonate and sandstone cores suppliers
21-12-2020 Carbonate And Sandstone Core Supplier. Berea sandstone oil cores in the past 30 years, Berea sandstone core samples have been widely recognized by the petroleum industry as the best rock to test the efficiency of chemical surfactants. Berea sandstone is a kind of sedimentary rock, its grain is mainly sand grain, which is …
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Porosity and Permeability Changes in Sandstones and
Abstract. The porosity and permeability of carbonate and sandstone cores were measured using a CMS-300 permeameter under a variety of stresses. Stress-permeability correlations showed significant variations with rock type. Porosity decay was similar between the rock types. The difference in the stress-permeability behaviors is …
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Sandstone matrix stimulation
The solution did not cause any silica precipitates and increased the core permeability. The acid combination also showed lower corrosivity compared to conventional mud acid. Mahmoud et al. [59] compared the efficiency of HEDTA and GLDA and 15 wt.% HCl in removing the carbonate content of illitic sandstone cores at 300°F. Results …
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Leading Provider of Sandstone and Petroleum …
We provide core samples to meet specific porosity and permeability criteria. Why Choose Us? We can cut both carbonate and sandstone cores and …
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(PDF) Impure CO2 storage reactions of sandstone, mudstone and carbonate
For carbonate cemented upper Precipice Sandstone or Moolayember Formation core strong dissolution of calcite and ankerite, with corrosion of siderite, Fe-rich chlorite, and sulphides or monazite ...
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High-Temperature Laboratory Testing of Illitic Sandstone Outcrop Cores
Mahmoud et al. (2015) showed that HCl is incompatible with sandstone cores containing 1-18% illite at 300 • F and recommended the use of 20% GLDA when the damage is mainly carbonate based ...
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(PDF) Impure CO2 storage reactions of sandstone, …
Impure CO2 storage reactions of sandstone, mudstone and carbonate cemented cores: Experimental CO2 SO2 NOX O2 reaction metal mobilisation and fate …
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A novel hybrid nano-smart water with soluble chlorides and …
Core flooding tests conducted on sandstone and limestone samples showed a secondary oil recovery rate of 50.4% and 43.5% with seawater injection and a tertiary oil recovery of around 10% and 11% of the OOIP using a hybrid nano-smart water solution with 1000/1000 ppm of K 2 SO 4 +MgCl 2 and 1000 ppm of NC and 10,000 ppm of MgSO 4 …
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Wettability Alteration of Carbonate Cores by Alumina …
of carbonate and sandstone rock. Their results demonstrated wettability altera-tion from liquid-wet to gas-wet, decreasing water and condensate imbibition for ... Thin sections of carbonate cores were washed by toluene vapor using the Soxhlet and distilled water and dried at 70 °C for 48 hr. Then, they were placed in oil for 6000 A-22-b 4000
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Adsorption of Crude Oil Components onto Carbonate and Sandstone …
It is believed that the adsorption increases as the relative amount of the more reactive species (R 3 NH +) increases in the crude oil because of a decrease in the brine pH occurring when the crude oil is injected into the sandstone core. Carbonate brine pH is alkaline and buffered by the carbonate system, and thus, the relative amount of the ...
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Novel environmentally friendly fluids to remove carbonate …
At pH value of 4, GLDA gave the best results in Berea and Bandera sandstone cores. AB - Carbonate minerals are present in sandstone formations. These minerals are either introduced to the formation during drilling/completion operations or naturally present in the rock. There is a need to remove these carbonates to enhance well performance.
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Application of emulsified acids on sandstone formation at …
Then, the stable emulsified acid samples are developed and their impact on the properties of Berea sandstone core samples, including porosity, pore-size distribution, permeability and wettability, are investigated. The core samples have undergone pre-flush (10% HCl:5% CH 3 COOH) before the main flush (emulsified acid). The emulsified acids …
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Cores & Core Samples for Research in Texas at Kocurek …
Kocurek Industries provides a variety of core samples utilizing various types of rock formations, including sandstone. Sandstone is considered a classic sedimentary rock
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Frontiers | Experimental investigation of the …
The tight sandstone cores from the Jinqiu Gas field in the Sichuan Basin were used in an experimental investigation on the interaction mechanism between supercritical CO 2 and tight sandstone to examine …
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Inverse modelling of core flood experiments for predictive …
In contrast to the sandstone rocks, modelling of the carbonate rocks w as significantly impro ved 274 relative to W enck et al. [2021]. The Edwards Brown - from the Upper Cretaceous in T exas ...
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(PDF) An Experimental Investigation of WAG Injection
The results show that about 39.12 % (IOIP %) and 12.37 % (IOIP %) of additional oil was recovered by the alternation of water and gas injection in the sandstone and carbonate cores, respectively.
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Effect of temperature on sandstone rock wettability
In the current study, the sandstone cores were flooded with low-salinity brine at elevated temperatures for five Barail sandstone cores. ... of wettability alteration-inducing ions to injection water at the appropriate concentration improves oil recovery from sandstone and carbonate reservoirs in a commercially feasible and environmentally ...
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Experimental investigation of the influence of carbonated …
1. Introduction. Carbon dioxide (CO 2) storage and injection into depleted carbonate or tight sandstone reservoirs is a promising method to decrease its emissions.The value of carbon capture and storage (CCS) would be offset by the benefit of enhanced oil recovery (EOR). CO 2-EOR is a process of injecting CO 2 into subsurface …
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(PDF) Green Enhanced Oil Recovery for Carbonate …
Total oil production from the carbonate core after the brine, acetone, and SP blend, followed by a post-flood with brine. Figures - available via license: Creative Commons Attribution 4.0 ...
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Applied Sciences | Free Full-Text | Impact of …
Coreflooding experiments were conducted at high-pressure high-temperature (HPHT) conditions using carbonate and sandstone cores. The used samples had porosity values of 15–18%, and …
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Fluoro-chemical injection for wettability alteration of sandstone …
The sandstone (core II) and carbonate (core IV) core plug samples were selected in section 3.5.1 for the injection experiments by which the strength in porous media ( apparent viscosity) was examined. The other sandstone (core I) and carbonate (core III) cores were used for the fluoro-chemical treatment tests and …
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carbonate and sandstone cores suppliers
The performances of the microsphere in both carbonate and sandstone rocks were evaluated by the coreflooding tests. The sandstone core plugs were homogenous outcrops from China. The carbonate core plugs were nature cores from Middle East oil reservoir. Because the nature cores were short, two carbonate core plugs formed a carbonate …
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Mineralogy analysis of Gray Berea sandstone cores.
The elemental composition of the Gray Berea sandstone cores using the X-ray fluorescence (XRF) analysis is listed in Table 2, while the mineralogy analysis of the core is shown in Figure 3. As ...
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Investigation of the Coupled Effect of IFT Reduction and …
Greater than 50% OOIP can be recovered from oil-wet carbonate cores by spontaneous imbibition of 0.05 wt% anionic surfactant solns. in the lab. scale. ... (HPHT) conditions using carbonate and sandstone cores. The used samples had porosity values of 15-18%, and permeability values were between 10 and 75 mD. Seawater was injected …
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