A kind of cone valve type automatic downhole blowout preventer device and using method
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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
Active Publication Date: 2021-09-28
SOUTHWEST PETROLEUM UNIV
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Its disadvantage is that there is no circulation channel above the isolation position, and the flapper valve cannot withstand high pressure
Method used
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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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Abstract
The invention relates to a cone valve type automatic downhole blowout preventer device and a using method. The device includes upper drill pipe casing, inner pipe, drilling fluid inflow hole, annular piston, annular piston rod, drilling fluid outflow hole, guide ring fixing rod, rectangular guide ring, rectangular section guide rod, lead screw, rubber tube, motor Fixed rod, linear motor system, rubber cartridge positioning ring, conical valve core, lower drill pipe casing, drill pipe, wellbore. The blowout preventer is controlled by the pressure sensor while drilling, the communication adopts the acoustic pulse signal transmitted by the drill pipe, and the signal receiver is installed inside the linear motor system. When the drill bit reaches the high-pressure layer, the pressure sensor detects the high pressure and sends a pulse signal to the linear motor system. After receiving the signal, the linear motor is started to drive the screw connected to the conical valve core to rise, and the drilling fluid outlet in the inner tube is closed. . Afterwards, the drilling fluid enters the piston cylinder to push the piston down, squeezes the rubber tube to expand it, and closes the annular space in the wellbore.
Description
technical field [0001] The invention relates to the technical field of well control equipment and oil and gas exploitation, and is a cone valve type automatic downhole blowout preventer device. Background technique [0002] The blowout preventer is the core equipment in the well control equipment. In the drilling operation, in the event of an emergency such as slug, well kick, blowout, etc., the blowout preventer should be quickly activated to shut down the well. BOP is one of the key equipments to ensure smooth drilling operation and personal safety. [0003] For example, the U.S. Patent No. US4712613A proposes a plug valve downhole blowout preventer. Its main features are that the control signal is transmitted by the mud pulse, the opening and closing of the flow channel is controlled by the electromagnetic valve, the drilling fluid is used as the power source, and the plug valve is used to isolate the drill. Columns and expandable packers seal the annulus. Its disadvant...
Claims
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Application Information
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