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An acidic wastewater may contain Fe2

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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An acidic wastewater may contain Fe2
Microbial communities in flowback water impoundments from ...
Microbial communities in flowback water impoundments from ...

Hydraulic ,fracturing, of ,shale, is most commonly performed through the introduction of large volumes (c. 5000–20 000 m 3) of aqueous ,fracturing, fluid at sufficient rate and pressure to break the hydrocarbon-bearing formation and increase its permeability for optimal flow rates of ,gas, and liquids into the well bore (Arthur et al., 2008; Gregory et al., 2011).

A Two-Phase Flowback Model for Multiscale Diffusion and ...
A Two-Phase Flowback Model for Multiscale Diffusion and ...

A ,shale gas, reservoir is usually hydraulically fractured to enhance its ,gas, production. When the injection of water-based ,fracturing, fluid is stopped, a two-phase ,flowback, is observed at the wellbore of the ,shale gas, reservoir. So far, how this water production affects the long-term ,gas, recovery of this fractured ,shale gas, reservoir has not been clear.

New Single-Well Standalone Gas Lift Process Facilitates ...
New Single-Well Standalone Gas Lift Process Facilitates ...

Gas, lift has been a popular artificial lift method to remove fracture ,fluids, because it allows for high liquid flow rates and is excellent at handling ,flowback, sand. Its disadvantage is that a source of lift ,gas, is required to initiate ,gas, lift, with this source typically being other nearby ,gas, wells or a third-party ,gas, …

Characterising the vertical separation of shale-gas source ...
Characterising the vertical separation of shale-gas source ...

Potential groundwater contamination has been postulated from a range of possible contamination pathways illustrated in Fig. 1a, including: (1) migration of produced gases and/or ,fluids, used in the hydraulic ,fracturing process, though rock units separating ,shale,-,gas, source rocks and overlying aquifers (Vengosh et al. 2014; Myers 2012a); (2) contamination via defective production wells; (3) leakage of abandoned wells (Davies et al. 2014); and (4) spills of chemicals, ,flow back, …

Utilizing New Technologies for Treating Frac Flowback and ...
Utilizing New Technologies for Treating Frac Flowback and ...

Natural ,gas, extraction results in two types of water, ,flowback, from the ,fracturing process, that lasts only a few weeks and produced water that is part of the formation and is extracted with the ,gas,. The produced water will be present as long as the well is operated and therefore represents an opportunity for water resource augmentation long after the hydraulic ,fracturing, is completed.

Utilizing New Technologies for Treating Frac Flowback and ...
Utilizing New Technologies for Treating Frac Flowback and ...

Natural ,gas, extraction results in two types of water, ,flowback, from the ,fracturing process, that lasts only a few weeks and produced water that is part of the formation and is extracted with the ,gas,. The produced water will be present as long as the well is operated and therefore represents an opportunity for water resource augmentation long after the hydraulic ,fracturing, is completed.

New Single-Well Standalone Gas Lift Process Facilitates ...
New Single-Well Standalone Gas Lift Process Facilitates ...

Gas, lift has been a popular artificial lift method to remove fracture ,fluids, because it allows for high liquid flow rates and is excellent at handling ,flowback, sand. Its disadvantage is that a source of lift ,gas, is required to initiate ,gas, lift, with this source typically being other nearby ,gas, wells or a third-party ,gas, …

CHAPTER 1 Introduction and Overview: the Role of Shale Gas ...
CHAPTER 1 Introduction and Overview: the Role of Shale Gas ...

As noted, horizontal drilling and hydraulic ,fracturing, are the two technologies that together have the potential to unlock the tighter ,shale gas, formations. Hydraulic ,fracturing, (also known as “fracking”) is a well-stimulation technique which consists of pumping a fluid and a propping agent (“proppant”), such as sand, down the wellbore under pressure to create fissures in the hydrocarbon-bearing rock.

Shale gas: challenges and opportunities
Shale gas: challenges and opportunities

How is ,shale gas, extracted? ,Shale gas, is extracted using hydraulic ,fracturing, (also known as ‘fracking’), a ,process, used in the oil industry since the mid-twentieth century. In order to produce ,gas, economically, this is used in conjunction with horizontal drilling. A conventional well bore is drilled and, on reaching the ,shale,…

Microbial communities in flowback water impoundments from ...
Microbial communities in flowback water impoundments from ...

Hydraulic ,fracturing, of ,shale, is most commonly performed through the introduction of large volumes (c. 5000–20 000 m 3) of aqueous ,fracturing, fluid at sufficient rate and pressure to break the hydrocarbon-bearing formation and increase its permeability for optimal flow rates of ,gas, and liquids into the well bore (Arthur et al., 2008; Gregory et al., 2011).

A Two-Phase Flowback Model for Multiscale Diffusion and ...
A Two-Phase Flowback Model for Multiscale Diffusion and ...

A ,shale gas, reservoir is usually hydraulically fractured to enhance its ,gas, production. When the injection of water-based ,fracturing, fluid is stopped, a two-phase ,flowback, is observed at the wellbore of the ,shale gas, reservoir. So far, how this water production affects the long-term ,gas, recovery of this fractured ,shale gas, reservoir has not been clear.

Flow Measurement of Well Flowback Fluids | FLEXIM
Flow Measurement of Well Flowback Fluids | FLEXIM

After the shaker process (removing as much of the solid proponent) the collectio of the liquids to be hauled off for separation is required. Just like the premixing stage, measuring the flow back fluids requires a non-invasive meter, as wetted measuring systems face a high degree of wear and tear through the abrasive and corrosive media inside the pipe.

Life Cycle Assessment of Marcellus Shale Gas ...
Life Cycle Assessment of Marcellus Shale Gas ...

The produced water and gas are separated at the surface: Water flows to a storage tank and the gas is flared until conditions permit diversion to a gathering pipeline. In Figure 1A, we illustrate the amounts of flowback gas that returned to the surface during the flowback phases of 29 Marcellus shale gas wells drilled and completed by XTO.

Life Cycle Assessment of Marcellus Shale Gas ...
Life Cycle Assessment of Marcellus Shale Gas ...

The produced water and gas are separated at the surface: Water flows to a storage tank and the gas is flared until conditions permit diversion to a gathering pipeline. In Figure 1A, we illustrate the amounts of flowback gas that returned to the surface during the flowback phases of 29 Marcellus shale gas wells drilled and completed by XTO.

Hydraulic Fracturing – Is Industry Standard Practice the ...
Hydraulic Fracturing – Is Industry Standard Practice the ...

In summary, the LPG fracturing process permits the composition and properties of the injected fluid to be tailored to maximise fracture placement and the resulting fracture effectiveness. In general, hydrocarbon fracturing fluids will result in less disruption to reservoir flow than water-based fluids.

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