作为防砂管柱的一部分，主要用于配合密封模块形成密封。在坐封、验封隔离 封隔器和每一层砾石充填的过程中与4.75in密封件配合密封，实现整个作业流程。
SEAL BORE
INTRODUCTION
As part of the sand-control string, seal bore is used for sealing. During the process of setting, examining sealing and every-layer gravel pack, incorporated with 4.75" sealing elements, realizing the whole operation procedure.
Note: Other specification products are available.
