Oil and gas drilling wastewater
Oil and gas drilling wastewater includes: drilling wastewater, fracturing flowback fluid, produced water, etc.
Characteristics of oil and gas field water: high hardness, high COD, colloidal content, significant fluctuations in water quality, etc.
In the oil and gas drilling wastewater treatment industry, Sotec Environmental is the first domestic company to carry out large-scale engineering applications of DTRO. It boasts engineering cases with different water quality in multiple blocks in China and mature engineering application experience.
Advantages of DTRO/WTRO-based treatment of oil and gas field water
Good anti-pollution performance: highly tolerant to COD, adaptable to fluctuations of water quality in a wide range, and producing water with stable quality
Effective treatment: effluent water quality meets the discharge standard of Table 1
Significant reduction of sewage: high concentration of high-salinity water, reducing post-treatment evaporated water
Highly integrated equipment: modular equipment, easy to move, allowing process combinations
Low equipment power: a single set of equipment has low operating power and is suitable for mobile
Typical application cases
Project |
Process |
Scale |
Time |
| Lvke central treating station of Sulige Gas Field in Inner Mongolia | Advanced oxidation +UF+DTRO+MVR | 400m3/d | 2016.06 |
| Operating services for Suining Botong treating station of PetroChina Chuanzhong Oil & Gas Field | Pretreatment + DTRO+(MVR) | 800m3/d | 2017.04 |
| Ruiyuan central treating station of fracturing flowback fluid from CNPC Sulige Gas Field in Inner Mongolia | Advanced oxidation +UF+DTRO | 600m3/d | 2019.12 |
| Operating services for Suining Moxi treating station of Petro China Chuanzhong Oil & Gas Field | Pretreatment +DTRO+MVR | 600m3/d | 2018.07 |
|
Emergency project of CNPC’s shale gas project in Dazu, Chongqing
|
Advanced oxidation + TMF+ high-pressure DTRO | 600m3/d | 2018.08 |
| CNOOC and Tianjin Bihai Environmental Protection emergency wastewater treatment project | Pretreatment + high-pressure DTRO | 600m3/d | 2019.02 |
| Sinopec Energy and Environmental shale gas produced water integrated equipment project |
Pretreatment + high-pressure DTRO+RO
|
50m3/d | 2019.04 |
| Trial project for Sinopec Southwest Oilfield Service’s project in Deyang | Pretreatment +high-pressure two-stage DTRO | 100m3/d | 2019.08 |
| Project of produced water membrane system equipment for Sinopec Fuling Shale Gas | DTRO+RO high-and-low-pressure system | 1600m3/d | 2019.10 |
| Project for treatment of natural gas produced water of Inner Mongolia Yuhongxin | Pretreatment + MBR+DTRO+MVR (salt separation) | 800m3/d | 2020.03 |
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