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What is used to neutralize acidic industrial wastewater

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What is used to neutralize acidic industrial wastewater
Original Research Analysis of Chemical and Toxicological ...
Original Research Analysis of Chemical and Toxicological ...

proved in American research, the amount of the ,fluid, obtained in shale gas ,fracturing, is lower than in the case of a tight oilfield: 40-60% for a vertical well and 10-30% for a horizontal well [11, 12]. The majority of ,flowback, water outflow takes place during the first hours to …

Produced and Flowback Water Recycling and Reuse ...
Produced and Flowback Water Recycling and Reuse ...

The fracturing fluid used in slickwater operations typically comprises about 98% water and sand (as a proppant), with additives (e.g., friction reducer, biocide, surfactant, scale inhibitor, breaker, and clay stabilizer) comprising 2% (Ketter et al. 2006). Polyacrylamide polymers are used to reduce the tubular friction pressure (friction reducers).

Study on Fluid-Rock Interaction and Reuse of Flowback ...
Study on Fluid-Rock Interaction and Reuse of Flowback ...

1/1/2018, · The formulation for synthesizing the ,fracturing fluid, with the recycled ,flowback fluid, was optimized by evaluating (1) the gelation and cross-linking properties of gel, (2) the shear resistance of gel under the reservoir temperature, and (3) permeability damage due to gel residuals through coreflood tests. 2. Materials 2.1. ,Flowback Fluid,.

Fracture Characterization Using Flowback Water Transients ...
Fracture Characterization Using Flowback Water Transients ...

Main hydraulic fracture (1) where ρ l stands for ,fracturing, fluid density (g/cm 3), φ F represents the porosity of F (nondimensional), S l F represents the water/gas saturation in F (nondimensional), q l FW represents the fluid ,flowback, rate from F to the horizontal wellbore (g/cm 3 ·s), and ν l F represents the water/gas transport velocity (cm/s), which can be defined as (2) where k F stands for the permeability …

Optimization of Fracturing Fluid Flowback Based on Fluid ...
Optimization of Fracturing Fluid Flowback Based on Fluid ...

Results show that the wellhead pressure and fluid flowback volume calculated by the model are consistent with the field data. The sand production ratio of the three wells during the flowback process is, lower than 1%, indicating that the optimized parameters achieve the purpose of flowback operations and reduce the flowback volume of the proppant.

Original Research Analysis of Chemical and Toxicological ...
Original Research Analysis of Chemical and Toxicological ...

proved in American research, the amount of the fluid obtained in shale gas fracturing is lower than in the case of a tight oilfield: 40-60% for a vertical well and 10-30% for a horizontal well [11, 12]. The majority of flowback water outflow takes place during the, first hours to a dozen, or so days. During contact with the deposit, the fracturing fluid

REFINING THE HYDROCAVITATION TECHNOLOGY FOR …
REFINING THE HYDROCAVITATION TECHNOLOGY FOR …

(Armstrong et al., 1995)This technology is based on injecting a special hydraulic ,fracturing, . ,fluid, under pressure into the well pay horizon, which is sufficient for creating an elongated fracture in the rock. The HF ,fluid, is a suspension, in which specially prepared ,sand, …

Study on Fluid-Rock Interaction and Reuse of Flowback ...
Study on Fluid-Rock Interaction and Reuse of Flowback ...

Comparing to the original ,fracturing fluid, whose density was 1.30 g/cc, the density of the ,flowback fluid, decreased with time, indicating the loss of weighting agent into the formation. When the ,flowback fluid, is reused, additional weighting agent might be needed depending on the ,fracturing, job; however, the dosage can be less than the case using the fresh water.

Settling and Mobilization of Sand‐Fiber Proppants in a ...
Settling and Mobilization of Sand‐Fiber Proppants in a ...

As σn increased from 0 to 88.5 kPa, the fracture aperture decreased by up to 85% and caused the sand‐fiber clumps to act like pillars that supported the applied stress and prevented full fracture closure. At the end of the settling experiments, we simulated flowback by injecting solids‐free carrier fluid while maintaining σn =88.5 kPa.

Fracture Characterization Using Flowback Water Transients ...
Fracture Characterization Using Flowback Water Transients ...

Main hydraulic fracture (1) where ρ l stands for ,fracturing fluid, density (g/cm 3), φ F represents the porosity of F (nondimensional), S l F represents the water/gas saturation in F (nondimensional), q l FW represents the ,fluid flowback, rate from F to the horizontal wellbore (g/cm 3 ·s), and ν l F represents the water/gas transport velocity (cm/s), which can be defined as (2) where k F stands for the permeability …

Water Management for Hydraulic Fracturing in ...
Water Management for Hydraulic Fracturing in ...

Whereas a conventional HF may unload from 200 to 500 bbl of water per well, an unconventional HF may unload from 10,000 to 50,000 bbl of water per well. Conventional HF ,flowback, typically contains emulsified oil, and often contains other stimulation fluids, such as aromatic solvent and/or spent acid.

Gas Lift - Artificial Lift - Completions | Schlumberger
Gas Lift - Artificial Lift - Completions | Schlumberger

Gas lift, installations manage abrasive materials, such as ,sand,, and can be used in low-productivity, high-gas/oil ,ratio,-wells or deviated wellbores. With our ,gas lift, products, slickline-retrievable ,gas lift, valves can be pulled and replaced without disturbing tubing if designs or system performance must be changed.

Optimization of Fracturing Fluid Flowback Based on Fluid ...
Optimization of Fracturing Fluid Flowback Based on Fluid ...

Results show that the wellhead pressure and fluid flowback volume calculated by the model are consistent with the field data. The sand production ratio of the three wells during the flowback process is lower than 1% indicating that the optimized parameters achieve the purpose of flowback operations and reduce the flowback volume of the proppant.

(PDF) DEM-CFD Modeling of Proppant Pillar Deformation and ...
(PDF) DEM-CFD Modeling of Proppant Pillar Deformation and ...

PDF | In this study, proppant pillar deformation and stability during the ,fracturing fluid flowback, of channel ,fracturing, was simulated with DEM-CFD-... | Find, read and cite all the research you ...

Study on Fluid-Rock Interaction and Reuse of Flowback ...
Study on Fluid-Rock Interaction and Reuse of Flowback ...

Comparing to the original ,fracturing, fluid whose density was 1.30 g/cc, the density of the ,flowback, fluid decreased with time, indicating the loss of weighting agent into the formation. When the ,flowback, fluid is reused, additional weighting agent might be needed depending on the ,fracturing, job; however, the dosage can be less than the case using the fresh water.

Stable Dispersion of Coal Fines during Hydraulic ...
Stable Dispersion of Coal Fines during Hydraulic ...

Furthermore, fines suspension with DI water, 0.268 M KCl, and 0.2 M NaCl was reported, which, however, is only circa half of average seawater salinity, while hydraulic ,fracturing fluid, is usually saline (nearly 0.6 M NaCl or 0.44 M KCl), and the pH is usually moderately alkaline (8.5) to be chemically compatible with the formation water.

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