In recent years,there have been some new developments in the research of materials for cement modification in heavy oil extraction.The main research method is to add silica materials and fibers to oil well cement.At the same time,it has been found that 200 mesh(0.074 mm)silicon powder has wide applicability,and a silicon powder content of about 35%is more suitable for oil well cement construction.Micro silicon and nano silica have some special properties due to their large specific surface area and small particle size.Cement stone can be added with single or mixed fibers,which can effectively improve the strength of cement stone.The addition of retarders effectively alleviates the problem of rapid hydration of cement at high temperatures.In addition,some scholars have studied unconventional cement modified materials.
关键词
油井水泥/耐高温/稠油开采/水泥改性材料
Key words
Oil well cement/High temperature resistance/Heavy oil recovery/Materials for cement modification
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