Glass connection, tubing constant pressure connection, single constant connection and tubing blankingplug 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。
2
The procreative blankingplug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup.
型管柱中的生产堵塞器具有单流阀作用，可方便进行反循环洗井；
3
Then the flow characteristic of the constant flux blankingplug is simulated with the 20-SIM software, and it is verified by experiment on the test bench.