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Remote treatment of soil polluted by industrial 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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Remote treatment of soil polluted by industrial acid wastewater
Analysis of Cuttings’ Minerals for Multistage Hydraulic ...
Analysis of Cuttings’ Minerals for Multistage Hydraulic ...

The problem of partial ,fracturing, caused by the average ,fracturing, of horizontal wells is solved. According to the data provided by the cutting analysis technology, this well uses slickwater as the ,fracturing, construction ,fluid,, it reduces the damage to the formation, and solves the problem of construction ,fluid backflow,.

Optimization on fracturing fluid flowback model after ...
Optimization on fracturing fluid flowback model after ...

Sun and Xiu (2017) investigated the timing when ,fracturing fluid, flowback start is not only related to the time of ,fracturing fluid, gel breaking but also closely related to the physical properties of the reservoir, especially the mechanical parameters and stresses of the reservoir: for rigid formations, the gel break time should be chosen as the time of ,fracturing fluid, flowback; for loose formation, the fracture …

Case study Identifying proppant backflow zones enhances ...
Case study Identifying proppant backflow zones enhances ...

fracturing, which is a clear indication that the fracture was not working as per the design intent. Hence the hydraulic fracturing needed complete reassessment and re-design. Combining the assessment of solid particle flow intervals with the determination of the fluid inflow profile will …

DEM-CFD Modeling of Proppant Pillar Deformation and ...
DEM-CFD Modeling of Proppant Pillar Deformation and ...

After the hydraulic-fracturing operation, the fracturing fluid flows back to the wellbore which results in additional drag force to the proppant particles. Consequently, the proppant pillar might lose its stability due to the flow of proppant, resulting in sanding and significant decrease of fracture conductivity.

Analysis of Cuttings’ Minerals for Multistage Hydraulic ...
Analysis of Cuttings’ Minerals for Multistage Hydraulic ...

The problem of partial fracturing caused by the average fracturing of horizontal wells is solved. According to the data provided by the cutting analysis technology, this well uses slickwater as the fracturing construction fluid, it reduces the damage to the formation, and solves the …

Proppant backflow zones determination by spectral noise ...
Proppant backflow zones determination by spectral noise ...

The obtained data were compared with the ,profile, of ,fluid, inflow from the formation, obtained with the help of an extended logging complex. The developed technique of recognition of sand production intervals together with determination of the ,fluid, inflow ,profile, will allow to qualitatively improve the design of the subsequent hydrofracturings on a deposit.

The effects of fluid transport on the creation of a dense ...
The effects of fluid transport on the creation of a dense ...

The model is based on the following main assumptions: (i) natural fractures activate via a slippage mechanism following the Coulomb–Mohr criterion; (ii) stress perturbations due to the activation of neighbouring natural fractures are neglected; (iii) ,fluid, flow is mainly within the activated natural fractures and the growth of a tensile fracture is neglected; and (iv) the rock is saturated with a ,fluid, whose viscosity is much smaller than the viscosity of the injected ,fluid,.

Synthesis of erucic amide propyl betaine compound ...
Synthesis of erucic amide propyl betaine compound ...

5/10/2020, · The micelle-breaking performance of the ,fracturing fluid, was good, and the surface interface tension of the ,fracturing fluid, was very low, which was beneficial to the ,backflow, of the ,fracturing fluid,. In addition, the average permeability damage rate of the ,fracturing fluid, to the natural core of the reservoir in the target block was 6.07 %.

Proppant backflow zones determination by spectral noise ...
Proppant backflow zones determination by spectral noise ...

The obtained data were compared with the ,profile, of ,fluid, inflow from the formation, obtained with the help of an extended logging complex. The developed technique of recognition of sand production intervals together with determination of the ,fluid, inflow ,profile, will allow to qualitatively improve the design of the subsequent hydrofracturings on a deposit.

Elastic Relaxation of Fluid-Driven Cracks and the ...
Elastic Relaxation of Fluid-Driven Cracks and the ...

when the ,fluid, inlet is exposed to a lower pressure, the ,fluid, flows backwards (,backflow,) and the crack closes due to the elastic relaxation of the solid. Herewe study the dynamics of the crack closure during the ,backflow,. We find that the crack radius remains constant and the ,fluid, volume in …

PILOT TEST OF FIBER-LADEN FRACTURING TECHNOLOGY-- …
PILOT TEST OF FIBER-LADEN FRACTURING TECHNOLOGY-- …

The fiber technology is a new technique in hydraulic ,fracturing,,certain concentrations fiber immixed in the lately stage of fracture treatment can ,control, proppant ,backflow, and accelerate the rate of ,fluid backflow,.Proppant carrying by fiber in ,fracturing, treatment is the main action of fiber.It can decrease the damage of fracture,reduce polymer concentration and obtain optimization fracture ...

Diagnosis and evaluation of fracturing treatments (Journal ...
Diagnosis and evaluation of fracturing treatments (Journal ...

This paper introduces the pressure derivative in ,fracturing,-pressure analysis for oil wells. The derivative is shown to enhance the analysis capabilities significantly. The interpretation methodology is presented, and several field data sets and simulations are discussed to illustrate to technique.

PROPPANT MATERIAL AND FORMATION HYDRAULIC FRACTURING ...
PROPPANT MATERIAL AND FORMATION HYDRAULIC FRACTURING ...

In U.S. Pat. No. 5,330,005, a method of controlling proppant ,backflow, from an underground formation is disclosed wherein the addition of fiber materials to the mixture used for hydraulic ,fracturing, and to the well gravel-packed filter reduces proppant ,backflow, and/or the production of fine grained grit in the packing, thus stabilizing the packing and reducing the consumption of high polymer fluids.

The effects of fluid transport on the creation of a dense ...
The effects of fluid transport on the creation of a dense ...

The model is based on the following main assumptions: (i) natural fractures activate via a slippage mechanism following the Coulomb–Mohr criterion; (ii) stress perturbations due to the activation of neighbouring natural fractures are neglected; (iii) ,fluid, flow is mainly within the activated natural fractures and the growth of a tensile fracture is neglected; and (iv) the rock is saturated with a ,fluid, whose viscosity is much smaller than the viscosity of the injected ,fluid,.

Polymer-Enhanced Foams for Water Profile Control - OnePetro
Polymer-Enhanced Foams for Water Profile Control - OnePetro

Abstract Foam injection has been proven to be an efficient technique for EOR applications, stimulation operations and ,profile control,. However, foam is known to have low stability and poor oil tolerance but adding polymer is reported to be an efficient way to improve such foam stability.

PROPPANT MATERIAL AND FORMATION HYDRAULIC FRACTURING ...
PROPPANT MATERIAL AND FORMATION HYDRAULIC FRACTURING ...

In U.S. Pat. No. 5,330,005, a method of controlling proppant backflow from an underground formation is disclosed wherein the addition of fiber materials to the mixture used for hydraulic fracturing and to the well gravel-packed filter reduces proppant backflow and/or the production of fine grained grit in the packing, thus stabilizing the packing and reducing the consumption of high polymer fluids.

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