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Treatment of high concentration acid wastewater

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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Treatment of high concentration acid wastewater
Imbibition of hydraulic fracturing fluids into partially ...
Imbibition of hydraulic fracturing fluids into partially ...

Osmotic potential can increase or decrease the amount of imbibition depending on the salinity of the ,fracturing fluid,, brine, and mineralogy of the shale [Makhanov et al., 2014]. The addition of surfactants can reduce the surface tension and modify wettability, thus ,influencing, imbibition [Makhanov et al., 2014; Mirchi et al., 2015].

The influencing factors of fracturing effects in low ...
The influencing factors of fracturing effects in low ...

Aimed at the ,influencing factors, of gas wells ,fracturing, effects in Yanchang gas field,according to geology,,fracturing, and well test data in the Shan 2,through qualitative and grey correlation analysis method,this paper analyzed the ,influencing, degree on open flow capacity of 25 fractured wells in Shan 2. The result shows that the major ,influencing factors, on the ,fracturing, effects are ...

fracturing fluid interactions - UCL Discovery
fracturing fluid interactions - UCL Discovery

24 The use of hydraulic ,fracturing, techniques to extract oil and gas from low 25 permeability shale reservoirs has increased significantly in recent years. During hydraulic 26 ,fracturing,, large volumes of water, often acidic and oxic, are injected into shale 27 formations. This drives ,fluid,-rock interaction that can release metal contaminants (e.g.,

Description: Experimental investigation of shale ...
Description: Experimental investigation of shale ...

Experimental investigation of shale imbibition capacity and the ,factors influencing, loss of hydraulic ,fracturing, fluids . Spontaneous imbibition of water-based frac- turing fluids into the shale matrix is considered to be the main mechanism responsible for the high volume of water loss during the ,flowback, …

Evaluation of shale gas well fracturing performance based ...
Evaluation of shale gas well fracturing performance based ...

Results show that the ,flowback, data collected in the blowout stage cannot be neglected, otherwise the effective fracture volume is relatively smaller. The proposed method provides the technical support for the evaluation ,of fracturing, performance of shale gas wells with the use of ,flowback, data.

Shale Reservoir Fracturing Fluid Absorption Capacity and ...
Shale Reservoir Fracturing Fluid Absorption Capacity and ...

The study found that: artificial fracture surface ,of fracturing fluid, seepage is the shale reservoir ,flowback, rate is generally lower than 30% of the main reasons. In view of the Sichuan Basin shalesamples,a lots the experiment of spontaneous infiltrationabsorption,compared did been with the sandstone in the Ordos Basin and the volcanic rocks in the Songliao Basin.

The influencing factors of fracturing effects in low ...
The influencing factors of fracturing effects in low ...

Aimed at the ,influencing factors, of gas wells ,fracturing, effects in Yanchang gas field,according to geology,,fracturing, and well test data in the Shan 2,through qualitative and grey correlation analysis method,this paper analyzed the ,influencing, degree on open flow capacity of 25 fractured wells in Shan 2. The result shows that the major ,influencing factors, on the ,fracturing, effects are ...

Distinguished Lecturer Slides and Graphics
Distinguished Lecturer Slides and Graphics

Many ,factors, lead to this state of affair; technically, a fundamental difficulty is that reservoir heterogeneity at multiple scales may have strong effect on ,fluid, flows. This lecture presents an analysis of the challenge and possible resolutions.

Major factors influencing proppant behaviour and proppant ...
Major factors influencing proppant behaviour and proppant ...

Numerous factors have been found in previous studies, and they can be summarized into three major groups: proppant properties, reservoir properties and hydraulic fracturing production, which affect proppant damage mechanisms.

Hydraulic fracturing fluid migration in the subsurface: A ...
Hydraulic fracturing fluid migration in the subsurface: A ...

Fracturing fluid migration is a multiphase flow problem in which gas or oil (the nonwetting phase) contained in the shale interacts with HF fluid or brine (the wetting phase). Most shale gas plays have low brine saturation (0.1–0.5), which gives rise to a number of multiphase flow effects such as capillary imbibition and reduced relative permeability [ Byrnes , 2011 ; Engelder , 2012 ].

Description: Experimental investigation of shale ...
Description: Experimental investigation of shale ...

Experimental investigation of shale imbibition capacity and the ,factors influencing, loss of hydraulic ,fracturing, fluids . Spontaneous imbibition of water-based frac- turing fluids into the shale matrix is considered to be the main mechanism responsible for the high volume of water loss during the ,flowback, …

Optimising Hydraulic Fracturing Through Simulation ...
Optimising Hydraulic Fracturing Through Simulation ...

Essentially, sensitivity analysis can define best practice by way of determining multiple influencing factors, such as proppant reliability, gel filtration and capillary resistance to name a few. Furthermore, such a simulation can allow for assessment of the optimal pressure drawdown for clean-up.

Model of the Use and Production of Water in the Gulf of ...
Model of the Use and Production of Water in the Gulf of ...

Factors Influencing, Produced Water Composition . Several interacting ,factors, influence the chemical composition of produced water: 1. the composition of injected hydraulic ,fracturing, fluids, 2. the targeted geological formation and associated hydrocarbon products, 3. the stratigraphic environment, and 4. subsurface processes and residence time

fracturing fluid interactions - UCL Discovery
fracturing fluid interactions - UCL Discovery

24 The use of hydraulic ,fracturing, techniques to extract oil and gas from low 25 permeability shale reservoirs has increased significantly in recent years. During hydraulic 26 ,fracturing,, large volumes of water, often acidic and oxic, are injected into shale 27 formations. This drives ,fluid,-rock interaction that can release metal contaminants (e.g.,

Major factors influencing proppant behaviour and proppant ...
Major factors influencing proppant behaviour and proppant ...

Numerous factors have been found in previous studies, and they can be summarized into three major groups: proppant properties, reservoir properties and hydraulic fracturing production, which affect proppant damage mechanisms.

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