When an ice run flows to a frozen section, it can become blocked. If the blockage persists, water levels may rise and cause floods and dam bursts, threatening lives and property.
During the test of Ku1 well in Da Zhangtuo underground gas storage tank, MHS packer is blocked and set in stage collar of deviated section.
大张坨地下储气库库1井试油，MHS封隔器在斜井段分级箍时遇阻坐封。
3
A special unit is used for delivering the plug into pipeline, it is appropriate for temporarily blocked and pressure-released pipe section in pipeline repair operation.