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Basic Knowledge
3.1 Cementing purpose
  • Detailed description
Cementing is not only a important role in the oil well construction, but also a system engineer link up the well drilling and oil recovery. Cementing is the basic mean to maintain borehole long-term and construct oil flow-road. Cementing operations can be divided into the casing cementing, drilling liner cementing, crowded cement cementing and cement plug cementing etc. The goal and requirements are totally different, but they are summed up and have the following three similar aspects. 1. Sealing the oil, gas and water, preventing formation fluid flow between mutual channeling, and protecting productive strata. 2. Sealing serious leakage zone or other complex stratus such as collapse 3.Support sleeve and prevent underground fluid to corrode the casing