预填砾石衬管 PGPL
充填砾石 pack gravel
预填砾石滤器 pre-packed gravel sleeve
内部砾石充填 IGP
先期砾石充填 IGP
树脂涂敷砾石充填 resin-coated pack
稠化酸砾石充填 acid pack
新井砾石充填防砂 initial pack
砾石充填滑套 GP sliding sleeve ; gravel pack sliding sleeve
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针对水井修井和水平井成井填砾困难的特点，通过大量室内试验，研制了陶粒贴砾过滤器。
According to the difficulties of water well repairing and gravel-filling for horizontal well, porcelain granule pre-coated well screen was developed based on a lot of laboratory tests.
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