Mechanical gas well blowout explosion jet flow unblocking device
A mechanical gas well blowout explosion jet flow unblocking device belongs to the technical field of oil extraction processes and comprises an oil pipe nitrogen vehicle, a sucker rod nitrogen vehicle, a four-way connector, a hose, a hollow sucker rod, an oil pipe, a nozzle, an expanding packer, a pa...
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Format: | Patent |
Sprache: | chi ; eng |
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