Blowout preventer assembly control cabinet and opening method
A control cabinet and blowout preventer technology, which is applied to instruments, time registers, individual input/output registers, etc., can solve problems such as instability of the control cabinet of the blowout preventer group, and improve the well shut-in stability. and reliability, reducing safety risks, and good light transmittance
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Embodiment 1
[0037] Such as figure 2 and image 3 The blowout preventer assembly control cabinet shown includes a cabinet body 1 with an open front, a control assembly located in the cabinet body 1, and a cabinet door 2 that matches the cabinet body 1. It is characterized in that the cabinet door 2 Locking is controlled by the electric control lock 3, which is connected to the controller signal, and the controller obtains the wellhead overflow in real time.
[0038] Among them, overflow volume = wellhead return displacement - mud pump output displacement.
[0039] In this embodiment, the cabinet door is automatically unlocked under the control of the control cabinet. The specific method is: set the overflow threshold and monitor the overflow in real time; during normal drilling and completion operations, use the electric control lock 3 to pair the cabinet door of the control cabinet body 1 2 for locking, wherein the cabinet door 2 is made of acrylic board; when the overflow is greater t...
Embodiment 2
[0043] Such as Figure 2 to Figure 5 In the blowout preventer assembly control cabinet shown, on the basis of Embodiment 1, the cabinet door 2 is made of acrylic board. A frame 4 is arranged in the cabinet body 1, and a first driver 5 for driving the frame 4 to move to the open end of the front side of the cabinet body 1; The controller is also used to control the first driving member 5 and the heating device 6. A circle of grooves 7 is arranged on the front of the frame 4 , and a metal sheet 8 and a second driving member 9 are arranged in the groove 7 , and the second driving member 9 is used to drive the metal sheet 8 to protrude out of the groove 7 . The heating device 6 is a heating resistance wire or a high-temperature electric heating film located outside the groove 7 . Wherein the metal sheet 8 is a hard alloy sheet with a thickness of 1-3mm.
[0044] When the electric control lock 3 cannot be unlocked due to well kick or blowout, the first driving member 5 drives th...
Embodiment 3
[0047] Such as Figure 6 The shown control cabinet of a blowout preventer assembly is different from Embodiment 2 in that the heating device 6 is a plurality of positive electrodes 10 and negative electrodes 11 arranged on opposite sides of the groove 7, and the positive electrodes 10 and The negative electrodes 11 are in one-to-one correspondence.
[0048] The melting method of the acrylic plate in this embodiment is as follows: the surface of the driving frame 4 of the first driving member 5 is attached to the inside of the cabinet door 2, and a discharge is carried out between some positive electrodes 10 and negative electrodes 11 on opposite sides of the groove 7, so that the metal The thin sheet 8 heats up rapidly when clicked, and at the same time, the second driving member 9 drives the metal sheet 8 to move toward the cabinet door 2 to split the acrylic board.
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