Abstract In recent years, China has requested to increase the development of shale gas resources. According to a report released by Accenture, a world-renowned management consulting firm, on the 29th, water resources play an important role in all stages of shale gas development. Therefore, China needs to make water resources vital in the development of shale gas...
In recent years, China has requested to increase the development of shale gas resources. According to a report released by Accenture, a world-renowned management consulting firm, on the 29th, water resources play an important role in all stages of shale gas development. Therefore, China needs to consider water resources as a vital factor in the development of shale gas. According to the report, large amounts of water resources are consumed during the development of shale gas, and a large amount of wastewater is generated during the operation. If improperly handled, it will cause certain environmental pollution. China has characteristics such as large population density, scarcity of water resources, uneven distribution, and seasonal water shortage. Therefore, water resources management needs to be considered as an important factor in the development of shale gas.
According to the research report released by Accenture on the 29th, "Water and Shale Gas Development", from the experience of the United States, the amount of water required for drilling and fracturing is generally about 5 million gallons (189.27 million liters), equivalent to 1,000 vehicles. The amount of water transported by the truck, where the water consumption in the fracturing stage is up to 90% of the total water consumption.
According to the report, the current hydraulic fracturing method is one of the core technologies for shale gas development. The water used in hydraulic fracturing mainly comes from surface water, groundwater and municipal water supply. In addition, in the fracturing process, in addition to a large amount of water and sand, a small amount of chemical substances are injected to provide lubrication and sterilization.
After fracturing, the previously injected fracturing fluid will flow back to the surface, in addition to containing the previously injected chemicals, with chemicals in the formation and natural radioactive materials to form wastewater. If the concentration of these substances is above a certain standard, the wastewater needs to be transported to a designated location for disposal.
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