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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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Influence of aquifer heterogeneity and return flow on ...
Influence of aquifer heterogeneity and return flow on ...

10/1/2005, · We use the term ‘effective parameters’ in the following sense: ,pumping, a well at a constant rate in an unconfined heterogeneous aquifer induces drawdown in a finite number of piezometers that can be approximated by drawdown induced by a test of identical ,pumping, rate and geometry in a fictitious homogeneous aquifer with effective hydraulic parameters.

(PDF) Modeling of sand-water slurry flow through ...
(PDF) Modeling of sand-water slurry flow through ...

Effects of particle size on various slurry flow parameters such as pressure drop, solid phase velocity distribution, friction factor, granular pressure, turbulent viscosity, turbulent kinetic ...

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Sand Production - an overview | ScienceDirect Topics
Sand Production - an overview | ScienceDirect Topics

Traveling-barrel pumps are widely used when ,sand, production is a problem; their main advantages are listed below. • The traveling barrel keeps the fluid in motion around the hold-down, preventing ,sand, or other solids from settling between the seating nipple and the hold-down. Therefore, pulling of the pump assembly is usually trouble-free. •

Aquifer Parameters Estimation using Well Log and Pumping ...
Aquifer Parameters Estimation using Well Log and Pumping ...

The key parameters to be estimated based on all information available are the transmissivity (T) for confined aquifers or hydraulic conductivity (K) for unconfined aquifers and storage coefficient ...

5.2: Hydraulic Transport of Sand-Shell Mixtures in ...
5.2: Hydraulic Transport of Sand-Shell Mixtures in ...

In a, sand-sized material, this works because the critical and minimum friction velocities are fairly stable, so raising the, pumping, velocity or lowering the concentration will be enough to start the bed sliding, then erode the bed and, return, to stable operation. With a, sand-shell, mixture, as described above, the LDV and minimum friction velocities become time-dependent, parameters.

Annex 1 Estimating soil hydrological characteristics from ...
Annex 1 Estimating soil hydrological characteristics from ...

Loamy ,sand, Medium crumb 0.15–0.22 1.6–6.0 Fine ,sand, Single grain 0.15–0.22 1.6–6.0 Medium ,sand, Single grain 0.22–0.26 > 6 Coarse ,sand, and gravel Single grain 0.26–0.35 > 6

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(PDF) Slurry handbook Guidelines for slurry pumping ...
(PDF) Slurry handbook Guidelines for slurry pumping ...

15 Slurry parameters The following parameters must be determined when calculating a slurry pump with FLYPS or manually. Particle size and distribution Particle size d50 (d85) is a measure of the percentage of particles in the slurry with a certain size or smal- ler.

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