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Wastewater discharge of coal mine enterprises

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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Wastewater discharge of coal mine enterprises
CROSSLINKED FLUID TREATMENT AND METHODS FOR FRACTURING …
CROSSLINKED FLUID TREATMENT AND METHODS FOR FRACTURING …

crosslinked ,fluid, treatment and methods for ,fracturing, underground formations based on ,flowback,, production water, seawater, fresh water, and mixtures of same 3178900 - EP15887389A1 - EPO Application Dec 16, 2015 - Publication Jun 14, 2017

CROSSLINKED FLUID TREATMENT AND METHODS FOR FRACTURING …
CROSSLINKED FLUID TREATMENT AND METHODS FOR FRACTURING …

crosslinked ,fluid, treatment and methods for ,fracturing, underground formations based on ,flowback,, production water, seawater, fresh water, and mixtures of same 3178900 - EP15887389A1 - EPO Application Dec 16, 2015 - Publication Jun 14, 2017

Evaluation of the relationship between fracture ...
Evaluation of the relationship between fracture ...

One of the reasons for this is that fracture lengths calculated after stimulation are often less than designed lengths. While actual fracture lengths may be shorter due to fracture growth out of zone, improper proppant settling, or proppant flowback, short calculated fracture lengths can also result from incorrect analysis techniques.

AADE-15-NTCE-35 Pump-in and Flow-back Tests for ...
AADE-15-NTCE-35 Pump-in and Flow-back Tests for ...

in phase is the result of fluid leak-off into the formation, which is highly dependent on permeability and threshold capillary entry pressure. In low-permeability formations like tight shale, leak-off may be too slow for the fracture to close within a reasonable amount of time. In this case, minimum

Proppant Flowback Control Additives | SPE Annual Technical ...
Proppant Flowback Control Additives | SPE Annual Technical ...

Proppant suspended in a viscosified ,fracturing fluid, is carried outwardly away from the wellbore within the fractures as they are created and extended with continued pumping. Upon release of pumping pressure, the proppant remains in the fractures holding the separated rock faces in an open position forming a conduit for flow of hydrocarbon, or formation fluids, back to the wellbore.

Engineering criteria for fracture flowback procedures ...
Engineering criteria for fracture flowback procedures ...

Simulation studies indicate that selection of a desirable flowback rate is very sensitive to crossflow effects resulting from induced fractures in multiplemore » This crossflow can result in significant overflushing of proppant in the lower stress zones, if not countered by properly applied flowback procedures. « less

Effect of fracturing fluids on the seepage properties of ...
Effect of fracturing fluids on the seepage properties of ...

Hydraulic ,fracturing, is a major stimulation measure for industrial exploitation of coalbed gas reservoirs.During the ,fracturing, of coalbed gas reservoirs occur serious lost circulation and ,low flowback rate,,which have a direct effect on the seepage properties of formation water and coalbed gas in the process of gas recovery by water drainage.In view of this,damage evaluation experiment of ,low, ...

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

The presence of the polymer increases the viscosity of the ,flowback fluid,. By itself, higher ,fluid, viscosity increases the potential for fouling of the water treating equipment because it promotes the tendency of other solids to stick to surfaces. Higher viscosity also reduces the settling ,rate, of …

Effect of fracturing fluids on the seepage properties of ...
Effect of fracturing fluids on the seepage properties of ...

Hydraulic ,fracturing, is a major stimulation measure for industrial exploitation of coalbed gas reservoirs.During the ,fracturing, of coalbed gas reservoirs occur serious lost circulation and ,low flowback rate,,which have a direct effect on the seepage properties of formation water and coalbed gas in the process of gas recovery by water drainage.In view of this,damage evaluation experiment of ,low, ...

Proppant Flowback Control Additives | SPE Annual Technical ...
Proppant Flowback Control Additives | SPE Annual Technical ...

Proppant suspended in a viscosified ,fracturing fluid, is carried outwardly away from the wellbore within the fractures as they are created and extended with continued pumping. Upon release of pumping pressure, the proppant remains in the fractures holding the separated rock faces in an open position forming a conduit for flow of hydrocarbon, or formation fluids, back to the wellbore.

Effect of fracturing fluids on the seepage properties of ...
Effect of fracturing fluids on the seepage properties of ...

Hydraulic ,fracturing, is a major stimulation measure for industrial exploitation of coalbed gas reservoirs.During the ,fracturing, of coalbed gas reservoirs occur serious lost circulation and ,low flowback rate,,which have a direct effect on the seepage properties of formation water and coalbed gas in the process of gas recovery by water drainage.In view of this,damage evaluation experiment of ,low, ...

Hydraulic Fracturing; Environmental Issue
Hydraulic Fracturing; Environmental Issue

A hydraulic fracture is formed by pumping the ,fracturing fluid, into the wellbore at a ,rate, sufficient to increase pressure downhole at the target zone (determined by the location of the well casing perforations) to exceed that of the fracture gradient (pressure gradient) of the rock.[40]

HYDRUS TECHNOLOGY FRACTURE STIMULATION FLOWBACK …
HYDRUS TECHNOLOGY FRACTURE STIMULATION FLOWBACK …

Hydraulic ,fracturing,, known as fracing, is commonly applied to wells for shale gas, tight gas, tight oil, and coal seam gas (CSG) to greatly increase the flow ,rate, in an otherwise ,low, permeability reservoir. ,Fracturing, is a well-stimulation technique in which large volumes of water are mixed with additives and

Experimental Study of Fracturing Fluid Retention in Rough ...
Experimental Study of Fracturing Fluid Retention in Rough ...

The engineering parameter that corresponds to the retention rate of fracturing fluid is the flowback rate in the field. A low postfracturing flowback rate for efficient and fracture-developed wells in tight reservoirs exist. Fracturing fluid entering the formation gradually diffuses into the deep part of the matrix.

HYDRUS TECHNOLOGY FRACTURE STIMULATION FLOWBACK …
HYDRUS TECHNOLOGY FRACTURE STIMULATION FLOWBACK …

Hydraulic ,fracturing,, known as fracing, is commonly applied to wells for shale gas, tight gas, tight oil, and coal seam gas (CSG) to greatly increase the flow ,rate, in an otherwise ,low, permeability reservoir. ,Fracturing, is a well-stimulation technique in which large volumes of water are mixed with additives and

CROSSLINKED FLUID TREATMENT AND METHODS FOR FRACTURING …
CROSSLINKED FLUID TREATMENT AND METHODS FOR FRACTURING …

crosslinked ,fluid, treatment and methods for ,fracturing, underground formations based on ,flowback,, production water, seawater, fresh water, and mixtures of same 3178900 - EP15887389A1 - EPO Application Dec 16, 2015 - Publication Jun 14, 2017

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.

Evaluation of the relationship between fracture ...
Evaluation of the relationship between fracture ...

One of the reasons for this is that fracture lengths calculated after stimulation are often less than designed lengths. While actual fracture lengths may be shorter due to fracture growth out of zone, improper proppant settling, or proppant flowback, short calculated fracture lengths can also result from incorrect analysis techniques.

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.

HYDRUS TECHNOLOGY FRACTURE STIMULATION FLOWBACK …
HYDRUS TECHNOLOGY FRACTURE STIMULATION FLOWBACK …

Hydraulic ,fracturing,, known as fracing, is commonly applied to wells for shale gas, tight gas, tight oil, and coal seam gas (CSG) to greatly increase the flow ,rate, in an otherwise ,low, permeability reservoir. ,Fracturing, is a well-stimulation technique in which large volumes of water are mixed with additives and

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