Well-killing method after gas drilling blowout
A gas drilling and well killing technology, which is applied in the fields of liquid/gas jet drilling, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems such as the difficulty of establishing a well killing fluid column, and achieve easy well killing steps and easy operation. Less demanding, the effect of applying wellhead back pressure
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[0029] Attached below figure 1 First, the connection structure of the components and equipment involved in the present invention will be described.
[0030] After drilling into a gas layer, first remove the air compressor and other equipment used in gas drilling to establish figure 1 The connection method shown. The first circulation process is: connect the conventional drilling pump 1 to the mud pool 16 and the wellhead drilling tool 7, and the drilling pump 1 pumps the drilling fluid in the mud pool 16 into the drilling tool 7, and then carries the formation gas into the ring after passing the bottom hole bit 9 Air 8, because the wellhead blowout preventer group 5 is closed, the gas-liquid two-phase flow in the annulus 8 enters the choke manifold 11 through the four-way 6, and the gas-liquid two-phase flow enters the gas-liquid separation after being throttled by the throttle valve 12 After the vibrating screen 14 and the vacuum deaerator 15 are processed, the drilling fluid ...
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