The agent suits non-selective water shutoff in sand formation.

该堵剂适用于砂岩地层油井非选择性堵水。

Comprehending those connotations of water shutoff and its technical keys can make water shutoff in oil wells as an important method for enhancing oil recovery.

应用这些内涵及技术关键，可使油井堵水成为提高采收率的重要措施。

Weather succeed or not in oil well water shutoff is affected by many facts.

油井堵水的成功与否受多因素控制。

Close both the hot and cold water shutoff valves upstream nearest to the intended installation.

关闭离计划安装位置最近的上游热水和冷水的关断阀.

Label the water shutoff valve, found where water enters the house, and main water shut-off valve, found with meter in a concrete box in the sidewalk or yard.

水表一般位于人行便道或庭院附近，找出水进房间的路径以及总止水阀的位置，明确标记出水阀的位置。

After the study of flooding and remaining oil distribution in block Huan17, the area of water plugging is fixed and water shutoff technique through composite slugs is applied.

通过对欢17块水淹状况、剩余油分布进行研究，确定了堵水实施区域，并应用了复合段塞堵水技术。

The successful pilots of profile control and water shutoff for offshore oil field show feasibility and broad application prospects of the water control technique for offshore oil field.

海上油田调剖堵水成功的矿场试验说明，海上油田控水技术具有可行性和广阔的应用前景。

Cross-linked polymer gel has unique structure and excellent performance, and due to this it has now most often been used in water shutoff and profile control in domestic and overseas oilfields.

交联聚合物冻胶（凝胶）因其独特的结构及优良的性能，而成为国内外油田堵水调剖作业中应用最广泛的堵剂。