Because the inclined snap ring grooves are added, the screenpipe can enter and exit the well favorably and the operation is also convenient.
由于增加了斜形卡环槽，使得筛管出入井顺利，作业也方便。
2
Introduced concept and principle of heavy oil finite sand control technique, and also design principle of slotting screenpipe parameters were introduced.
介绍了稠油有限防砂技术的概念和原理及割缝筛管参数的设计原则，并对现场应用效果进行了分析。
3
On the basis of sieve analysis for the formation sand, through the simulation experiments of sand production, the sieve-opening sine of premium screenpipe for sand control was determined.