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由于水比稠油容易泵送，处于一次采油阶段的稠油油田在采出少量油后通常就被水淹。一般是通过选择性封堵高渗透水层来达到防止井内水涌的目的。加拿大的研究人员研究出了一种降低渗透率的新方法：用细菌有效地沉淀碳酸钙，起到矿物封堵和胶给的作用。虽然化学交联聚合物能够用?
Because water is easier to pump than heavy oil, heavy oil fields in the primary recovery phase are often flooded with a small amount of oil. The purpose of preventing water inrush is generally achieved by selective sealing of the highly permeable aquifer. Researchers in Canada have developed a new method to reduce permeability: Bacteria effectively precipitate calcium carbonate, the role of mineral plug and glue. Although chemically cross-linked polymers can be used?