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oil producing machinery company

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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The Calculation of Coal Rock Fracture Conductivity with ...

By the definition of fracture diversion capacity, the fracture conductivity of coal rock KW is. With ( 8) ~ ( 11) and ( 20) ~ ( 23) substituted into the above ,formula,, a model for calculating the fracture conductivity of coal rock considering the factors of proppant embedment and deformation in Model 4-1 is given.

Search Injection Rate: Fracturing fluids and additives | SPE

Fault activation by hydraulic fracturing in western Canada ...

This event occurred during ,flowback,, a postinjection process during which ,fracturing fluid, is partially recovered in a controlled manner . This timing invites speculation that the earthquake was triggered by ,fluid, withdrawal; however, only ~7% of the injected fluids at well 1 flowed back to the wellhead, an unusually low recovery level compared with typical values of ~50% in other parts of western Canada ( …

(PDF) Computer simulation of hydraulic fractures | Jean ...

The conversion ,formula, between concentration in ppa and volumetric concentration c is (footnote continued) c ppa ¼ ðc=ð1 À cÞÞG s r w , where G s is the proppant solid's specific gravity, and r w is the water density in pounds per gallon (r w ' 8:34 lb=gal). 5 In reality, part of the gel fraction of the ,fluid,, plus the ,fluid, trapped in the interstitial pores of the proppant pack remains ...

Fluids | Free Full-Text | Discrete Element Simulation of ...

During the fluid flow calculation, the increment of fluid pressure (∆ P) in a reservoir is computed from the bulk modulus of fluid (K f), the volume of the domain (V d), the sum of the flow volume for one time step (∆ t), and the volume change of the domain due to mechanical loading according to Equation (12) :

Selection of Diameter of Spherical Tagin Fracturing ...

rate, of fracture ,fluid, at well head. The following are force ... ,Fracturing fluid flowback, is an important part of hydraulic ,fracturing, technique, ... and the ,formula, of air drag showing as 2 1 2 f C Sv , we can think that the thrustapply to tag from ,fracturing fluid

International Journal of Oil Gas and Coal Technology ...

Abstract: Hydraulic ,fracturing, is considered as an effective approach for the development of tight oil reservoirs. Unlike conventional reservoirs, after a large volume injection of the ,fracturing fluid,, the ,flowback rate, in tight oil reservoirs is considerably lower whereas the underlying mechanism explaining water retention remains unclear.

Study of the Potential Impacts of Hydraulic Fracturing on ...

For this study, ",flowback," is the ,fluid, returned to the surface after hydraulic ,fracturing, has occurred, but before the well is placed into production, while "produced water" is the ,fluid, returned to the surface after the well has been placed into production.10 They are collectively referred to as "hydraulic ,fracturing, wastewater" and may contain chemicals injected as part of the hydraulic ...

Study of Hydraulic Fracturing Real-time Evaluation Technology

Dali Guo 1, Lei Xu 1, Xiaohui Zeng 2, Xijun Ke 1 and Bo Tao 1. 1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Sciences, Southwest Petroleum University, Chengdu, Sichuan, 610500, China; 2 School of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan, 610500, China. Received: March 31, 2014. Revised: July 18, 2014.

A semi‐analytical model for capturing dynamic behavior of ...

Abstract Hydraulic ,fracturing, has been successfully employed for unconventional oil and gas recovery for decades. During ,flowback,, the closure of the fracture may exhibit with the pressure drop of ...

Comparison of analytical models for hydraulic fracture ...

The calculation formula for the fracture conductivity is as follows: $${F}_{\mathrm{RCD}}=\frac{74.8{f}_1\left({f}_1-0.74\right)\left(D{f}_1-{D}_1{f}_2-\frac{2{D}_2p}{E_2}\right)}{0.5{f_1}^2+1}{D_1}^2$$

The effect of N-ethyl-N-hydroxyethyl perfluorooctanoamide ...

So ,fracturing fluid flowback, plays a vital role in shale gas development. Its purpose is to reduce the reflow of the proppant and to maintain the reservoir cracks with a strong ability for diversion.

(PDF) Computer simulation of hydraulic fractures | Jean ...

The conversion ,formula, between concentration in ppa and volumetric concentration c is (footnote continued) c ppa ¼ ðc=ð1 À cÞÞG s r w , where G s is the proppant solid's specific gravity, and r w is the water density in pounds per gallon (r w ' 8:34 lb=gal). 5 In reality, part of the gel fraction of the ,fluid,, plus the ,fluid, trapped in the interstitial pores of the proppant pack remains ...

Study of Hydraulic Fracturing Real-time Evaluation Technology

Dali Guo 1, Lei Xu 1, Xiaohui Zeng 2, Xijun Ke 1 and Bo Tao 1. 1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Sciences, Southwest Petroleum University, Chengdu, Sichuan, 610500, China; 2 School of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan, 610500, China. Received: March 31, 2014. Revised: July 18, 2014.

Study of Hydraulic Fracturing Real-time Evaluation Technology

Dali Guo 1, Lei Xu 1, Xiaohui Zeng 2, Xijun Ke 1 and Bo Tao 1. 1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Sciences, Southwest Petroleum University, Chengdu, Sichuan, 610500, China; 2 School of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan, 610500, China. Received: March 31, 2014. Revised: July 18, 2014.

The effect of N-ethyl-N-hydroxyethyl perfluorooctanoamide ...

So ,fracturing fluid flowback, plays a vital role in shale gas development. Its purpose is to reduce the reflow of the proppant and to maintain the reservoir cracks with a strong ability for diversion.

Selection of Diameter of Spherical Tagin Fracturing ...

rate, of fracture ,fluid, at well head. The following are force ... ,Fracturing fluid flowback, is an important part of hydraulic ,fracturing, technique, ... and the ,formula, of air drag showing as 2 1 2 f C Sv , we can think that the thrustapply to tag from ,fracturing fluid

Testing device and method for simulating the flowback in ...

The invention discloses a testing device and method for simulating the ,flowback, in the shut-in period of fractured wells, comprising a ,fracturing fluid, tank, a ,flowback fracturing fluid, tank, a hydraulic ,fracturing, pump, a ,flowback fluid, collection beaker, and a shut-in ,flowback, testing system; the shut-in ,flowback, testing system is composed of a box body and an acoustic wave testing device, a ...

A semi‐analytical model for capturing dynamic behavior of ...

Abstract Hydraulic ,fracturing, has been successfully employed for unconventional oil and gas recovery for decades. During ,flowback,, the closure of the fracture may exhibit with the pressure drop of ...

The effect of N-ethyl-N-hydroxyethyl perfluorooctanoamide ...

So ,fracturing fluid flowback, plays a vital role in shale gas development. Its purpose is to reduce the reflow of the proppant and to maintain the reservoir cracks with a strong ability for diversion.