Saturday, July 27, 2013

Alumina support fracturing agent less hazardous waste little long service life


Alumina support fracturing agent less hazardous waste little long service life


   Oil and gas deep mining, the high closure pressure low permeability deposits by fracturing treatment, the rock cracked hydrocarbon, oil and gas from the cracks formed in the channel pooling out. Alumina support material with a solution into the formation along with the high-pressure filling fissures in the rock, play a supporting fissure is closed not because of the role of stress release, thereby maintaining high conductivity, so that gas flow, increase production. Practice has proved that using alumina support fracturing agent wells can increase production by 30-50%, but also to extend the service life of oil and gas wells.
   As technology continues to improve the level of human solid waste generated has also increased, a large pile of solid waste posing a great threat for the survival of the environment. Solid waste generally refers to human beings in the production, processing, distribution, consumption and lifestyle destination accessible ingredients such processes discarded after solids and mud-like substance. According to management needs can be divided into three categories: namely, industrial solid waste, toxic and hazardous solid waste and municipal waste. Storage of these wastes not only take up a lot of land, and the resulting solid dust piled on the environment caused great harm.
   Red mud is generated during the production of alumina bauxite solid waste, it is estimated that the world produces about 60 million annually T red mud. Of red mud annually more than 400 million t, the national total of stacked 2,000,000,000 yellow t, but the comprehensive utilization rate is only about 15%. Red mud piled up a lot of land and farmland, consume more stacked construction and maintenance costs, and red mud fluoride, alkali and other pollutants in the immersion will be a lot lower dissolution and leaching, pollution of groundwater sources; solid powder will cause dust pollution affecting the ecological environment and human health. Red mud  Ceramic proppant  has been preparing related reports, Yin Guoxun such as the use of red mud as main raw material, supplemented by fly ash, coal gangue and other materials, add a small amount of additives, prepared a new ceramic.
   Comprehensive utilization of solid waste on the current development of China's circular economy has an important significance. For the preparation of oil fracturing proppant industrial waste refers to a higher content of alumina, silica and other useful components of industrial solid wastes such as red mud, fly ash, ceramic roller production wastes.
Preparation of the adoption of these solid waste oil  frac proppant  that can be salvaged, but also protect the environment, the development of oil fracturing proppant in one direction.

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