A kind of cone valve type automatic downhole blowout preventer device and using method
A blowout preventer, automatic technology, applied in wellbore/well valve device, earthwork drilling, flushing wellbore and other directions, can solve the problem that the plug-in valve cannot withstand high pressure, etc., and achieves a high degree of automation, high speed and stability high sex effect
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[0035] The present invention will be further described below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.
[0036] like figure 1 , figure 2 , image 3 , Figure 4 As shown in the figure, a cone valve type automatic downhole blowout preventer device and its use method are characterized in that it comprises an upper drill pipe casing (1), an inner pipe (2), a drilling fluid inflow hole (3), an annular piston (4). ), annular piston rod (5), drilling fluid outflow hole (6), guide ring fixing rod (7), rectangular guide ring (8), rectangular guide rod (9), lead screw (10), rubber barrel (11) , motor fixing rod (12), linear motor system (13), rubber cylinder positioning ring (14), conical valve core (15), lower drill pipe casing (16), drill pipe (17), wellbore (18) . The device is installed on the drill pipe (17), and is connected with the drill pipe (17) by the upper drill pipe casing (1) and th...
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