Dissolvable aluminum alloy structural materials applied to oil fields
[China Aluminum Network] reporter learned from the Institute of Metal Research, Chinese Academy of Sciences, a fracturing ball made of dissolvable aluminum alloy structural material has been applied in Daqing Oilfield, Changqing Oilfield and other places. This soluble aluminum alloy material can be quickly dissolved in pure water, and both the initial reaction temperature with water and the dissolution rate in water can be regulated.
In the synergetic mining technology of oil and gas fields, it is necessary to use plugging tools such as fracturing balls and bridge plugs to plug the construction columns of different working layers. If tools such as fracturing balls made of common alloys are retained in the well, the construction period will be prolonged and the construction cost will be increased. Foreign oil companies have developed soluble fracturing balls (resin, magnesium or aluminum composites), but tools such as dissolvable bridge plugs and ball seats have not been successfully developed. In the exploitation of oil and gas fields in China, related tools still rely on imports, which severely limits the efficiency of our country’s oil extraction.
The dissolvable aluminum alloy structural materials developed by the Institute of Metal Research of the Chinese Academy of Sciences are developed by adding low-melting-point metals and various alloying elements to develop soluble aluminum alloy materials that can be dissolved in pure water. The initial reaction temperature can be adjusted from room temperature to 85°C, and the dissolution rate of the alloy can also be adjusted according to different working conditions. According to reports, in addition to good dissolution properties, structural parts made of soluble aluminum alloys also have sufficient strength and certain plasticity. They can be smelted and cast by conventional techniques. They have low cost and are easy to reach high productivity. Large-scale application and promotion. (hao xiaoming)
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