As sand plug occurs, stop adding proppants and circulate them out.
出现砂堵，停止加砂，进行循环。
A new scroll spring is provided for cleaning the sand filtering passage to prevent sand plug.
通过新颖的防砂涡卷弹簧可在防砂的同时清洁滤砂通道，防止滤砂通道堵塞。
In the process of fracturing operation, sand plug will affect the effects of fracturing and cause serious economic loss.
气井压裂施工过程中产生砂堵在影响压裂效果的同时将会产生严重的经济损失。
While taking advantage of the internal gas nozzle powerful "negative pressure" to achieve the gas nozzle cleaning, sand plug solve the problem.
同时利用气嘴内部强大的“负压差”来实现气嘴清洗，解决砂堵问题。
After office study and field experiment, using suspend plug and high sand concentration with little ceramsite to control fracture, advanced fracturing success ratio.
通过室内研究和现场试验，采用“悬塞”控缝、高砂比小陶粒控缝等配套技术，有效地控制了微裂缝在压裂过程中的影响，提高了压裂成功率。
Therefore a new type of sand prevention and water plugging agent was studied in this paper. The new agent can prevent sand effectively, but also plug water with high selectivity.
研究将防砂堵水工艺合二为一的新型防砂堵水剂，既能有效防砂，又有选择性堵水效果。
Therefore a new type of sand prevention and water plugging agent was studied in this paper. The new agent can prevent sand effectively, but also plug water with high selectivity.
研究将防砂堵水工艺合二为一的新型防砂堵水剂，既能有效防砂，又有选择性堵水效果。
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