So corruption mechanism and law are researched, rational protective measures are probed, as has vital meaning for pledging productionlifeof oil well and raising oil recovery benefit.
Water is the fundamental substance for all lives on the earth as well as for the life and productionof human beings. It is also a valuable natural resource.
水是地球上一切生命赖以生存、人类生活和生产必不可少的基本物质，它是宝贵的自然资源。
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Special well drilling, productionwelllife and the long-term benefit of oilfield exploration and development are directly influenced by the quality of well cementing.