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How to treat acidic wastewater with high COD

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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How to treat acidic wastewater with high COD
Challenges of Water Treating for Chemical Enhanced Oil ...
Challenges of Water Treating for Chemical Enhanced Oil ...

A polymer flood will result in back-,produced, water with at least twice and up to an order of magnitude greater viscosity compared to conventional ,produced, water, depending on the polymer concentration and extent of polymer degradation. While this is significant, it can be taken into account in equipment design.

Study on Pressure Propagation in Tight Oil Reservoirs with ...
Study on Pressure Propagation in Tight Oil Reservoirs with ...

The stimulated reservoir volume ,fracturing, development in tight oil reservoirs is characterized by multiscale flow of the reservoir matrix, fracture network, and hydraulic fracture. Therefore, the flow field structure is extremely complex. Multiscale flow characteristics have been revealed through the systematical experiments including the threshold pressure gradient and the stress sensitivity ...

Study on the influence of injection/production type and ...
Study on the influence of injection/production type and ...

1/8/2017, · Effective producing coefficient and areal sweep efficiency of several thin and poor Blocks ,in Daqing Oilfield, are calculated by the above methods. Effective producing coefficient and areal sweep efficiency is 0 and the well spacing is limit spacing, and the effective producing coefficient and areal sweep efficiency is 1 and the well spacing is minimal well spacing.

Comparison of Water Use for Hydraulic Fracturing for ...
Comparison of Water Use for Hydraulic Fracturing for ...

We compared water use for hydraulic ,fracturing, (HF) for oil versus gas production within the Eagle Ford shale. We then compared HF water use for Eagle Ford oil with Bakken oil, both plays accounting for two-thirds of U.S. unconventional oil production in 2013. In the Eagle Ford, we found similar average water use in oil and gas zones per well (4.7–4.9 × 106 gallons [gal]/well). However ...

Study on the influence of injection/production type and ...
Study on the influence of injection/production type and ...

1/8/2017, · Effective producing coefficient and areal sweep efficiency of several thin and poor Blocks ,in Daqing Oilfield, are calculated by the above methods. Effective producing coefficient and areal sweep efficiency is 0 and the well spacing is limit spacing, and the effective producing coefficient and areal sweep efficiency is 1 and the well spacing is minimal well spacing.

Study on Pressure Propagation in Tight Oil Reservoirs with ...
Study on Pressure Propagation in Tight Oil Reservoirs with ...

The stimulated reservoir volume ,fracturing, development in tight oil reservoirs is characterized by multiscale flow of the reservoir matrix, fracture network, and hydraulic fracture. Therefore, the flow field structure is extremely complex. Multiscale flow characteristics have been revealed through the systematical experiments including the threshold pressure gradient and the stress sensitivity ...

IPTC 2013: International Petroleum Technology Conference ...
IPTC 2013: International Petroleum Technology Conference ...

A typical hydraulic ,fracturing, process of a horizontal well ,in Daqing Oilfield,, China is simulated with this model. ... Since the ,fracturing fluid, leaks off into the reservoir more easily for larger porosity formations, ... these wells can be ,produced, at lower drawdown which can delay water breakthrough.

A feasibility study of using frac‐packed wells to produce ...
A feasibility study of using frac‐packed wells to produce ...

Special ,fracturing, treatment combined with gravel packing can produce highly conductive fractures to support cracks that can control grain migration, maximize sand placement, and assist steady gas flow. 50 Industrial cases have shown that frac‐packing operations can reliably address both the sand‐control problem and provide effective production stimulation for unconsolidated reservoirs. 51-54 According to Hainey and Troncoso, 52 ,fracturing, …

Hydraulic Fracturing Chemicals and Fluids Technology ...
Hydraulic Fracturing Chemicals and Fluids Technology ...

Hydraulic ,Fracturing, Chemicals and ,Fluid, Technology, Second Edition, continues to deliver an easy-to-use manual of ,fluid, formulations to meet specific job needs. Enhanced with more environmental aspects, this reference helps engineers and ,fluid, specialists select and use the appropriate chemicals for any hydraulic ,fracturing, …

Comparison of Water Use for Hydraulic Fracturing for ...
Comparison of Water Use for Hydraulic Fracturing for ...

We compared water use for hydraulic ,fracturing, (HF) for oil versus gas production within the Eagle Ford shale. We then compared HF water use for Eagle Ford oil with Bakken oil, both plays accounting for two-thirds of U.S. unconventional oil production in 2013. In the Eagle Ford, we found similar average water use in oil and gas zones per well (4.7–4.9 × 106 gallons [gal]/well). However ...

ENHANCED OIL RECOVERY – dankonetblog
ENHANCED OIL RECOVERY – dankonetblog

6/3/2016, · ,ENHANCED OIL RECOVERY, AND RESERVOIRS In the last few years, ,Enhanced Oil Recovery, (EOR) processes have re-gained interest from the research and development phases to the ,oilfield, EOR implementation. This renewed interest has been furthered by the current high oil price environment, the increasing worldwide oil demand, the maturation of oilfields worldwide, and few new-well…

IPTC 2013: International Petroleum Technology Conference ...
IPTC 2013: International Petroleum Technology Conference ...

A typical hydraulic ,fracturing, process of a horizontal well ,in Daqing Oilfield,, China is simulated with this model. ... Since the ,fracturing fluid, leaks off into the reservoir more easily for larger porosity formations, ... these wells can be ,produced, at lower drawdown which can delay water breakthrough.

Treatment of oilfield wastewater by combined process of ...
Treatment of oilfield wastewater by combined process of ...

The wastewater was stored at 4 °C until required. The main characteristics of the ,fracturing, wastewater are listed in Table 1. As shown, the ,fracturing, wastewater had high concentrations of COD, total dissolved solids and suspended solids (SS). In addition, the ,fracturing, wastewater had high chroma.

Stress redistribution in multi-stage hydraulic fracturing ...
Stress redistribution in multi-stage hydraulic fracturing ...

During hydraulic ,fracturing,, a ,fracturing fluid, is injected continuously into the formation, and fractures will propagate dynamically. However, it is difficult to predetermine the fracture geometry using the pressure distribution function. While using the criterion of K I = K Ic at each moment, the hydraulic mechanical coupling problem can be solved.

Treatment of oilfield wastewater by combined process of ...
Treatment of oilfield wastewater by combined process of ...

The wastewater was stored at 4 °C until required. The main characteristics of the ,fracturing, wastewater are listed in Table 1. As shown, the ,fracturing, wastewater had high concentrations of COD, total dissolved solids and suspended solids (SS). In addition, the ,fracturing, wastewater had high chroma.

Challenges of Water Treating for Chemical Enhanced Oil ...
Challenges of Water Treating for Chemical Enhanced Oil ...

A polymer flood will result in back-,produced, water with at least twice and up to an order of magnitude greater viscosity compared to conventional ,produced, water, depending on the polymer concentration and extent of polymer degradation. While this is significant, it can be taken into account in equipment design.

Petroleum - Wikipedia
Petroleum - Wikipedia

Petroleum, (pronounced / p ə ˈ t r oʊ l i ə m /) is a naturally occurring, yellowish-black liquid found in geological formations beneath the Earth's surface. It is commonly refined into various types of fuels.Components of ,petroleum, are separated using a technique called fractional distillation, i.e. separation of a liquid mixture into fractions differing in boiling point by means of ...

Petroleum - Wikipedia
Petroleum - Wikipedia

Petroleum, (pronounced / p ə ˈ t r oʊ l i ə m /) is a naturally occurring, yellowish-black liquid found in geological formations beneath the Earth's surface. It is commonly refined into various types of fuels.Components of ,petroleum, are separated using a technique called fractional distillation, i.e. separation of a liquid mixture into fractions differing in boiling point by means of ...

A feasibility study of using frac‐packed wells to produce ...
A feasibility study of using frac‐packed wells to produce ...

Special ,fracturing, treatment combined with gravel packing can produce highly conductive fractures to support cracks that can control grain migration, maximize sand placement, and assist steady gas flow. 50 Industrial cases have shown that frac‐packing operations can reliably address both the sand‐control problem and provide effective production stimulation for unconsolidated reservoirs. 51-54 According to Hainey and Troncoso, 52 ,fracturing, …

Stress redistribution in multi-stage hydraulic fracturing ...
Stress redistribution in multi-stage hydraulic fracturing ...

During hydraulic ,fracturing,, a ,fracturing fluid, is injected continuously into the formation, and fractures will propagate dynamically. However, it is difficult to predetermine the fracture geometry using the pressure distribution function. While using the criterion of K I = K Ic at each moment, the hydraulic mechanical coupling problem can be solved.

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