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Influencing factors of fracturing fluid flowback

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Influencing factors of fracturing fluid flowback
Green Ferrate(VI) for Multiple Treatments of Fracturing ...
Green Ferrate(VI) for Multiple Treatments of Fracturing ...

Fracturing, wastewater is often highly emulsified, viscous, and has a high chemical oxygen demand (COD), which makes it difficult to treat and recycle. Ferrate(VI) is a green ,oxidant, that has a high redox potential and has been adopted for the efficient oxidation of ,fracturing, wastewater to achieve triple effects: demulsification, visbreaking, and COD removal.

Frac Water Reuse - Chemical Engineering | Page 1
Frac Water Reuse - Chemical Engineering | Page 1

Describing an example treatment scheme for incoming fracturing flowback water, Kimball says that the oxidant ClO 2 could be used to break oil emulsions, destroy friction reducers and kill bacteria. Hydrocarbons could then be removed by dissolved air flotation, where fine bubbles diffusion floats oil, grease and total suspended solids (TSS).

Biocides in Hydraulic Fracturing Fluids: A Critical Review ...
Biocides in Hydraulic Fracturing Fluids: A Critical Review ...

Environmental exposure to biocides after an inadvertent release may occur during (1) transportation of chemicals to well pads (Figure 1, pathway 1); (2) mixing of chemical additives with the bulk of the ,fracturing fluid, (pathway 2); (3) injection of the mixed ,fluid, into the borehole (often occurs simultaneously with in-line mixing; pathway 2); (4) handling, collection, and storage of chemical-containing produced water (pathways 5 and 6); and (5) reuse, ,treatment,…

Treatment of hydraulic fracturing wastewater by wet air ...
Treatment of hydraulic fracturing wastewater by wet air ...

Currently, the treatment of hydraulic fracturing wastewater employs methods such as chemical coagulation, chemical oxidation, advanced oxidation processes, electrocoagulation, activated carbon adsorption, biological methods, and solidification methods (Lester et al. 2013; Sun et al. 2013; Theodori et al. 2014; Esmaeilirad et al. 2015), all of which have various shortcomings.

METHOD AND SYSTEM FOR THE TREATMENT OF WATER AND ...  …
METHOD AND SYSTEM FOR THE TREATMENT OF WATER AND ... …

Chlorine dioxide's unique chemical and physical properties make it ideal for use in ,treatment, of ,fracturing, fluids. As an ,oxidant,, it is able to penetrate hydrocarbons and break emulsions allowing for the separation and recovery of hydrocarbons, as well as …

Patent Report: | US10017686 | Proppant drying system and ...
Patent Report: | US10017686 | Proppant drying system and ...

The gaseous nitrogen is used to exhaust moisture from the ,proppant, silo until the ,proppant, is in a bone-dry condition. The moisture is exhausted from the ,proppant, silo while maintaining a back pressure within the ,proppant, silo. The bone-dry ,proppant, can be mixed with a stimulation ,fluid, and injected into a hydrocarbon bearing reservoir.

CFD-DEM Simulations of Proppant Particle Transport in ...
CFD-DEM Simulations of Proppant Particle Transport in ...

•Study the effects of the flow rate on ,proppant, coverage. •Use the actual geometry and compare the results. •Model the chemical reactions in fractures. •Include ellipsoidal particles to model sensors •Estimate ,backflow, after fracking and removing hydraulic pressure

CN102992524A - Fracturing flowback fluid treatment method ...
CN102992524A - Fracturing flowback fluid treatment method ...

The invention discloses a treatment method for ,flowback fluid, in horizontal well ,fracturing, exploitation of oil fields and unconventional oil and gas fields, such as natural gas and shale gas. The method comprises the steps of: removing scale-forming elements from ,fracturing flowback fluid, by flocculation and sedimentation; and converting chloride ions in waste water into hypochlorite and ...

Oil and Natural Gas Sector Hydraulically Fractured Oil ...
Oil and Natural Gas Sector Hydraulically Fractured Oil ...

reservoir rock is fractured with very high pressure ,fluid,, typically a water emulsion with a ,proppant, (generally sand) that ³props open´ the fractures after ,fluid, pressure is reduced. Oil well completions with hydraulic ,fracturing, can result in VOC and methane emissions, which occur when gas is vented to the atmosphere during flowback.

Green Ferrate(VI) for Multiple Treatments of Fracturing ...
Green Ferrate(VI) for Multiple Treatments of Fracturing ...

Ferrate(VI) is a green ,oxidant, that has a high redox potential and has been adopted for the efficient oxidation of ,fracturing wastewater, to achieve triple effects: demulsification, visbreaking, and COD removal. Firstly, optimal conditions were identified to build a model for fast and efficient ,treatment,.

POST-FRACTURING TREATMENTS DESIGN TO REDRESS THE …
POST-FRACTURING TREATMENTS DESIGN TO REDRESS THE …

Then, 2 PV of cross-linked ,fracturing fluid, were displaced in ID, without exceeding 3.45 MPa of differential pressure. A closure time of 2.5 hours was provided to allow the breaking of the ,fracturing fluid,. Permeability was measured again using KCl 1% w/v brine (PD). Effluents were collected every PV for polymer quantification.

Self‐similar solution of a plane‐strain fracture driven by ...
Self‐similar solution of a plane‐strain fracture driven by ...

A solution that describes the crack length evolution, the fracture opening, the net ,fluid, pressure and the ,fluid, flow rate inside the crack is presented. This self‐similar solution is obtained by expanding the fracture opening in a series of Gegenbauer polynomials, with the series coefficients calculated using a numerical minimization procedure.

(PDF) PRE-TREATMENT OF FLOWBACK WATER TO DESALINATION
(PDF) PRE-TREATMENT OF FLOWBACK WATER TO DESALINATION

The association of the processes to increase pH, oxidation and filtration enables efficient ,flowback, pre-treatment so that it can be used as the feed water for the NF and RO membranes.

Treatment Of Flowback For Reuse: An Emerging Oilfield ...
Treatment Of Flowback For Reuse: An Emerging Oilfield ...

In addition to acting as a disinfectant,, chlorine dioxide, can be a useful oxidizer for the treatment of flowback. Unlike alternative oxidizers like bleach and hydrogen peroxide,, chlorine dioxide, is a selective oxidizer. This property can be leveraged intelligently to meet other flowback treatment goals like the removal of metals and acid gases.

PRE-TREATMENT OF FLOWBACK WATER TO DESALINATION
PRE-TREATMENT OF FLOWBACK WATER TO DESALINATION

It is assumed that partial treatment of the flowback and its desalination to the level of TDS of 50 000 mg/L allows using it to prepare fracturing fluid by mixing it with make-up water [8].

Treatment of hydraulic fracturing wastewater by wet air ...
Treatment of hydraulic fracturing wastewater by wet air ...

We applied a combination of flocculation and wet air oxidation technology to optimize the reduction of COD in the treatment of hydraulic, fracturing, wastewater. The experiments used different values of flocculant, coagulant, and oxidizing agent added to the wastewater, as well as different reaction times and treatment temperatures.

Treatment of high viscosity fracturing flowback by ...
Treatment of high viscosity fracturing flowback by ...

In this paper,, Fe/Ni cata,lyst was successfully applied in the treatment of the flowback fluid for the first time. The catalyst can improve the oxidation efficiency of electrolytic brine and reduce the viscosity of fracturing flowback during the treatment process. The effect of the Fe/Ni proportion on the catalytic performance was studied.

Hydraulic fracturing fluids and their environmental impact ...
Hydraulic fracturing fluids and their environmental impact ...

16/2/2017, · Nowadays, aqueous fluids such as acid, water, brines, and water-based foams are used in most fracturing treatments. The breakdown of the fluids to decrease viscosity is mostly carried out by use of oxidizing agents.

On-site treatment of flowback and produced water from ...
On-site treatment of flowback and produced water from ...

1/12/2018, · For treatment of flowback, multiple on-site treatment systems are available for primary separation (i.e., reducing, TSS concentrations and particle size below 25 μm for disposal), secondary separation (i.e. removing TSS, iron and main scaling ions, and, reducing, particle size up to 5 μm for reuse), or tertiary treatment (i.e., reducing, TDS concentration in the permeate/distillate to below 500 mg/L) for …

CN102992524B - Fracturing flowback fluid treatment method ...
CN102992524B - Fracturing flowback fluid treatment method ...

The invention discloses a treatment method for ,flowback fluid, in horizontal well ,fracturing, exploitation of oil fields and unconventional oil and gas fields, such as natural gas and shale gas. The method comprises the steps of: removing scale-forming elements from ,fracturing flowback fluid, by flocculation and sedimentation; and converting chloride ions in waste water into hypochlorite and ...

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