Glass connection, tubing constant pressure connection, single constant connection and tubing blanking plug are main tubing internal seal tool.
玻璃接头、油管定压接头、油管单向定压接头和油管堵塞器是目前各油气田使用较普遍的油管内密封工具。
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To learn more about how bees recognize their nests, Pitts-Singer's team cut the glass tubes into three sections, then replaced the outer section, the middle section, or both, with clean tubing.