Blowout preventer control system and method for controlling a blowout preventer

Abstract

The present invention discloses a blowout preventer control system and a method for controlling a blowout preventer, including a blowout preventer control system, a blowout preventer body, and a remote control module. A right blowout preventer arm is vertically disposed on the right side of the blowout preventer body, and a sealing ring is provided in the middle of the blowout preventer body corresponding to the end of the right blowout preventer arm. A left blowout preventer arm is disposed on the left end of the blowout preventer body, and a buffer rod is slidably disposed on the inner wall of the left blowout preventer arm. A buffer assembly for reducing impact force is mounted on the end of the buffer rod. A control assembly for sending commands to the right and left blowout preventer arms is disposed on the left side of the buffer rod. The remote control module for remotely controlling the operation of the right and left blowout preventer arms is disposed in the middle section of the control assembly. The present invention not only improves the repair efficiency of damaged controller panels, but also has a multi-control operating system, reduces the occurrence of sudden accidents, and can also calibrate the data of the control system.

Description

Technical Field

[0001] The present invention relates to the technical field of blowout preventer control systems, in particular to a blowout preventer control system and a method for controlling a blowout preventer. Background Art

[0002] Blowout preventers (BOPs) are used as safety devices to close, isolate, and / or seal the wellbore during hydrocarbon drilling and production operations. A BOP is essentially a large valve connected to the wellhead and includes a closure member capable of sealing and closing the well in order to prevent the release of high-pressure gas or liquid from the well.

[0003] One type of blowout preventer widely used in both low-pressure and high-pressure applications is the ram-type blowout preventer. A ram-type blowout preventer uses two opposing closing members, or rams, disposed within a specially designed housing or body. The blowout preventer body has a bore aligned with the wellbore. The rams are equipped with sealing members that engage when the rams are closed to prevent flow through the bore. The rams may be pipe rams configured to close and seal an annulus around a pipe disposed within the bore, or they may be fully enclosed rams or fully enclosed shear rams configured to close and seal the entire bore. The closure of the rams is generally performed manually or remotely, with remote control utilizing a wired connection. Once the wire fails, manual control is limited to close range, significantly increasing the risk factor.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a blowout preventer control system and a method for controlling a blowout preventer are proposed. Summary of the Invention

[0005] An object of the present invention is to provide a blowout preventer control system and a method for controlling a blowout preventer to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a blowout preventer control system and a method for controlling a blowout preventer, the blowout preventer control system comprising a blowout preventer body and a remote control module, wherein a right blowout preventer arm is vertically arranged on the right side of the blowout preventer body, and a sealing ring is provided in the middle of the blowout preventer body corresponding to the end of the right blowout preventer arm, a left blowout preventer arm is provided at the left end of the blowout preventer body, and a buffer rod is slidably provided on the inner wall of the left blowout preventer arm, the buffer assembly for reducing impact force is installed at the end of the buffer rod, the left side of the buffer rod is provided with the control assembly for sending instructions to the right blowout preventer arm and the left blowout preventer arm, the remote control module for remotely controlling the operation of the right blowout preventer arm and the left blowout preventer arm is arranged in the middle section of the control assembly, the remote control module comprises a controller panel, a card slot, a card board and a power supply port, card slots are provided on both sides of the rear end of the controller panel, and a card board is installed on the inner wall of the card slot, and the front end of the middle part of the card board is electrically connected to the controller panel through the power supply port.

[0007] Furthermore, the control component includes a first sensor, a first controller and a main controller. The first sensor is connected to the bottom of the first controller, and the bottom end of the first controller is electrically connected to the main controller.

[0008] Furthermore, the control component also includes a second controller, a second sensor and a connecting line. The second controller is connected to the right side of the main controller, and the second sensor is electrically connected to the upper left side of the second controller. The right side of the second sensor is electrically connected to the connecting line.

[0009] Furthermore, the end of the connecting line is connected to an air charging and discharging pump, and the air charging and discharging pump is located on the left outer side of the right arm of the blowout preventer.

[0010] Furthermore, the air charging and discharging pump is electrically connected to a signal transceiver module, and the signal transceiver module transmits signals to the controller panel.

[0011] Furthermore, a buffer assembly for mitigating impact force is provided at the right end of the buffer rod, and the buffer assembly includes a support plate and a spring. A spring is fixedly mounted on the bottom of the support plate, and four springs are symmetrically arranged.

[0012] Furthermore, the buffer assembly also includes a damping rod and a base plate. The damping rod is inserted into the middle of the spring, and the base plate is fixedly mounted on the end of the damping rod.

[0013] Furthermore, a lag corrector is provided on the upper left side of the controller panel, and the top of the lag corrector is electrically connected to the lead corrector.

[0014] Furthermore, a pressure detector is fixedly installed on the bottom of the blowout preventer body, and the diameter of the pressure detector is larger than the diameter of the blowout preventer body.

[0015] Furthermore, a channel pipe is provided below the pressure detector, and the interior of the channel pipe is connected to the interior of the blowout preventer body.

[0016] The present invention provides a blowout preventer control system and a method for controlling a blowout preventer, which have the following beneficial effects: the blowout preventer control system and the method for controlling a blowout preventer can not only improve the repair efficiency of a damaged controller panel, but also have a multi-control operating system to prevent the occurrence of sudden accidents, and can also calibrate the data of the control system.

[0017] 1. The present invention uses the setting of the remote control module to enable the card slot opened at the rear end of the controller panel to be quickly detached from the card board provided with the power supply port. At the same time, the card board makes it easy to disassemble and maintain the controller panel, and at the same time, it enables the controller panel to be protected from damage to various components caused by various emergencies, thereby improving the emergency response after maintenance.

[0018] 2. The present invention configures a control component so that the main controller analyzes the signals transmitted by the first sensor and the second sensor, and controls the inflation and deflation air pumps through the first controller and the second controller to drive the right and left arms of the BOP to move relative to each other, thereby causing the right and left arms of the BOP to pressurize and close the sealing ring.

[0019] 3. The present invention provides a buffer assembly so that the sealing ring applies pressure to the base plate while applying pressure to the spring and the damping rod, so that the damping rod can buffer the impact force when the spring is reset, thereby preventing the right and left arms of the blowout preventer from breaking due to a sudden increase in oil pressure.

[0020] 4. The present invention combines a lag corrector with a lead corrector to create a lag phase characteristic. This correction device is called a lag corrector, also known as an integral corrector. Lag correction reduces high-frequency noise in the system, enhancing anti-interference capabilities. The high-frequency attenuation characteristics of the lag corrector's low-pass filtering lower the system's cutoff frequency, increasing the system's phase margin, reducing overshoot, and improving system stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of a blowout preventer control system and a method for controlling a blowout preventer according to the present invention;

[0022] Figure 2 Schematic diagram of the overall cross-sectional structure of a blowout preventer control system and a method for controlling a blowout preventer according to the present invention;

[0023] Figure 3 BOP control system and method for controlling BOP of the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0024] Figure 4 A schematic structural diagram of a blowout preventer control system and a method for controlling a blowout preventer according to the present invention;

[0025] Figure 5 A schematic diagram of the connection structure between a main controller and a controller panel system of a blowout preventer control system and a method for controlling a blowout preventer according to the present invention;

[0026] Figure 6 Schematic diagram of the remote control module structure of the blowout preventer control system and the method for controlling the blowout preventer of the present invention.

[0027] In the figure: 1. BOP body; 2. BOP right arm; 3. Sealing ring; 4. BOP left arm; 5. Buffer rod; 6. Buffer assembly; 601. Support plate; 602. Spring; 603. Damping rod; 604. Bottom plate; 7. Control assembly; 701. First sensor; 702. First controller; 703. Main controller; 704. Second controller; 705. Second sensor; 706. Connecting wire; 8. Inflating and deflating pump; 9. Signal transceiver module; 10. Remote control module; 1001. Controller panel; 1002. Card slot; 1003. Card board; 1004. Power supply port; 11. Lag corrector; 12. Lead corrector; 13. Pressure detector; 14. Borehole pipeline. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0029] See also Figures 1-6 The present invention provides a technical solution: a blowout preventer control system and a method for controlling a blowout preventer, comprising a blowout preventer body 1 and a remote control module 10, wherein a blowout preventer right arm 2 is vertically arranged on the right side of the blowout preventer body 1, and a sealing ring 3 is provided at the middle portion of the blowout preventer body 1 corresponding to the end of the blowout preventer right arm 2, a blowout preventer left arm 4 is arranged at the left end of the blowout preventer body 1, and a buffer rod 5 is slidingly arranged on the inner wall of the blowout preventer left arm 4, a buffer assembly 6 for reducing impact force is installed at the end of the buffer rod 5, and a buffer assembly 6 for reducing impact force is installed on the left side of the buffer rod 5 for the right arm 2 and the blowout preventer The control assembly 7 for sending instructions to the left arm 4 of the blowout preventer, and the remote control module 10 for remotely controlling the operation of the right arm 2 and the left arm 4 of the blowout preventer are arranged in the middle section of the control assembly 7. The remote control module 10 includes a controller panel 1001, a card slot 1002, a card board 1003 and a power supply port 1004. Card slots 1002 are opened on both sides of the rear end of the controller panel 1001, and the inner wall of the card slot 1002 is installed with a card board 1003. The front end of the middle part of the card board 1003 is electrically connected to the controller panel 1001 through the power supply port 1004.

[0030] See also Figures 1-4 The control component 7 includes a first sensor 701, a first controller 702, and a main controller 703. The first controller 702 is connected to the bottom of the first sensor 701, and the bottom end of the first controller 702 is electrically connected to the main controller 703. The control component 7 also includes a second controller 704, a second sensor 705, and a connecting line 706. The right side of the main controller 703 is connected to the second controller 704, and the upper left side of the second controller 704 is electrically connected to the second sensor 705. The right side of the second sensor 705 is electrically connected to the connecting line 706.

[0031] The specific operation is as follows: the main controller 703 analyzes the signals transmitted by the first sensor 701 and the second sensor 705, and controls the charging and discharging air pump 8 through the first controller 702 and the second controller 704 to drive the right arm 2 and the left arm 4 of the blowout preventer to move relative to each other, so that the right arm 2 and the left arm 4 of the blowout preventer apply pressure to the sealing ring 3 to close it;

[0032] See also Figure 1 and Figure 2 The end of the connecting line 706 is connected to the charging and discharging air pump 8, and the charging and discharging air pump 8 is located on the left outer side of the right arm 2 of the blowout preventer. The upper end of the charging and discharging air pump 8 is electrically connected to the signal transceiver module 9, and the signal transceiver module 9 transmits signals with the controller panel 1001. The right end of the buffer rod 5 is provided with a buffer assembly 6 for mitigating the impact force. The buffer assembly 6 includes a support plate 601 and a spring 602. The bottom of the support plate 601 is fixedly mounted with a spring 602, and four springs 602 are symmetrically arranged. The buffer assembly 6 also includes a damping rod 603 and a bottom plate 604. The middle part of the spring 602 is interspersed with a damping rod 603, and the end of the damping rod 603 is fixedly mounted with the bottom plate 604.

[0033] The specific operation is as follows: the sealing ring 3 applies pressure to the bottom plate 604 and at the same time applies pressure to the spring 602 and the damping rod 603, so that the damping rod 603 cushions the impact force when the spring 602 is reset, thereby preventing the right arm 2 and the left arm 4 of the blowout preventer from breaking due to the sudden increase in oil pressure;

[0034] See also Figure 5 A lag corrector 11 is provided on the upper left side of the controller panel 1001 , and the top of the lag corrector 11 is electrically connected to the lead corrector 12 .

[0035] The blowout preventer control system is characterized in that a pressure detector 13 is fixedly mounted on the bottom of the blowout preventer body 1, and the diameter of the pressure detector 13 is larger than the diameter of the blowout preventer body 1. A channel pipe 14 is provided below the pressure detector 13, and the interior of the channel pipe 14 is connected to the interior of the blowout preventer body 1;

[0036] The specific operation is as follows: the lag corrector 11 has a correction device with a lag phase characteristic, which is called a lag correction device, also known as an integral correction device. The lag correction has a weakening effect on the high-frequency noise in the system and enhances the anti-interference ability. The high-frequency attenuation characteristics caused by the low-pass filtering of the lag correction are used to reduce the cutoff frequency of the system and improve the phase margin of the system to reduce the overshoot of the system and improve the stability of the system.

[0037] In summary, the blowout preventer control system and the method for controlling the blowout preventer, when in use, first start the signal transceiver module 9 and the remote control module 10, so that the signal transceiver module 9 transmits the conditions inside the right arm 2 and the left arm 4 of the blowout preventer to the first controller 702 and the second controller 704 through the first sensor 701 and the second sensor 705, and then the first controller 702 and the second controller 704 transmit the conditions inside the main controller 703, and the main controller 703 transmits the signal into the controller panel 1001, so that the controller panel 1001 will transmit the signal to the signal transceiver module 9 in a remote wireless manner, and then the signal transceiver module 9 sends instructions to the charging and discharging air pump 8, so that the charging and discharging air pump 8 supplies air to the right arm 2 and the left arm 4 of the blowout preventer at the same time, drives the right arm 2 and the left arm 4 of the blowout preventer to move relative to each other, and performs work, so that The right arm 2 and the left arm 4 of the blowout preventer apply pressure to the sealing ring 3 to close it, and then the card slot 1002 opened at the rear end of the controller panel 1001 can be quickly detached from the card plate 1003 provided with the power supply port 1004. At the same time, the card plate 1003 makes it easy to disassemble and maintain the controller panel 1001, and at the same time, it enables the controller panel 1001 to be damaged by various components caused by various emergencies, thereby improving the emergency response after maintenance. Then, pressure is applied to the bottom plate 604 through the sealing ring 3, and pressure is applied to the spring 602 and the damping rod 603 at the same time, so that the damping rod 603 buffers the impact force when the spring 602 is reset, thereby preventing the right arm 2 and the left arm 4 of the blowout preventer from being broken due to the sudden increase in oil pressure. The correction device of the hysteresis corrector 11 with a hysteresis phase characteristic is called a hysteresis correction device, also known as an integral correction device. Hysteresis correction can weaken the high-frequency noise in the system and enhance the anti-interference ability. By utilizing the high-frequency attenuation characteristics caused by the low-pass filtering of hysteresis correction, the cutoff frequency of the system can be reduced and the phase margin of the system can be increased to reduce the overshoot of the system and improve the stability of the system.

[0038] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various implementations with various modifications as suited for specific applications.

Claims

1. BOP control system, characterized in that: The invention comprises a blowout preventer body (1) and a remote control module (10), wherein a blowout preventer right arm (2) is vertically arranged on the right side of the blowout preventer body (1), and a sealing ring (3) is provided in the middle of the blowout preventer body (1) corresponding to the end of the blowout preventer right arm (2), a blowout preventer left arm (4) is arranged on the left end of the blowout preventer body (1), and a buffer rod (5) is slidably arranged on the inner wall of the blowout preventer left arm (4), a buffer component (6) for reducing impact force is installed on the end of the buffer rod (5), a control component (7) for sending instructions to the blowout preventer right arm (2) and the blowout preventer left arm (4) is provided on the left side of the buffer rod (5), and the remote control module (10) for remotely controlling the operation of the blowout preventer right arm (2) and the blowout preventer left arm (4) is arranged on The middle section of the control component (7), the remote control module (10) includes a controller panel (1001), a card slot (1002), a card board (1003) and a power supply port (1004), the card slots (1002) are provided on both sides of the rear end of the controller panel (1001), and the card board (1003) is installed on the inner wall of the card slot (1002), the middle front end of the card board (1003) is electrically connected to the controller panel (1001) through the power supply port (1004), the control component (7) includes a first sensor (701), a first controller (702) and a main controller (703), the first sensor (701) is connected to the first controller (702) below, and the first controller (702) is connected to the main controller (703). ) is electrically connected to a main controller (703) at the bottom end thereof, the control assembly (7) further comprising a second controller (704), a second sensor (705) and a connecting line (706), the right side of the main controller (703) being connected to the second controller (704), and the upper left side of the second controller (704) being electrically connected to the second sensor (705), the right side of the second sensor (705) being electrically connected to a connecting line (706), the end of the connecting line (706) being connected to an air charge and discharge pump (8), and the air charge and discharge pump (8) being located on the left outer side of the right arm (2) of the blowout preventer, the upper portion of the air charge and discharge pump (8) being electrically connected to a signal transceiver module (9), and the signal transceiver module (9) being connected to the controller panel (10 01) for signal transmission, the right end of the buffer rod (5) is provided with a buffer assembly (6) for mitigating impact force, the buffer assembly (6) includes a support plate (601) and a spring (602), the bottom of the support plate (601) is fixedly mounted with a spring (602), and four springs (602) are symmetrically arranged, the buffer assembly (6) further includes a damping rod (603) and a bottom plate (604), the middle of the spring (602) is interspersed with a damping rod (603), and the end of the damping rod (603) is fixedly mounted with the bottom plate (604), a lag corrector (11) is provided on the upper left side of the controller panel (1001), and the top of the lag corrector (11) is electrically connected to the lead corrector (12).

2. The blowout preventer control system according to claim 1, characterized in that: A pressure detector (13) is fixedly mounted on the bottom of the blowout preventer body (1), and the diameter of the pressure detector (13) is larger than the diameter of the blowout preventer body (1). A channel pipe (14) is provided below the pressure detector (13), and the interior of the channel pipe (14) is connected to the interior of the blowout preventer body (1).

3. The method for controlling a blowout preventer using a blowout preventer control system according to claim 2, wherein: The method for controlling a blowout preventer comprises the following steps: S1, starting the signal transceiver module (9) and the remote control module (10), so that the signal transceiver module (9) transmits the internal conditions of the blowout preventer right arm (2) and the blowout preventer left arm (4) to the first controller (702) and the second controller (704) through the first sensor (701) and the second sensor (705); S2, the first controller (702) and the second controller (704) transmit the signal to the main controller (703), and the main controller (703) transmits the signal to the controller panel (1001), so that the controller panel (1001) transmits the signal to the signal transceiver module (9) via a remote wireless method; S3, the signal transceiver module (9) then sends a command to the air charging and discharging pump (8), so that the air charging and discharging pump (8) simultaneously supplies air to the right arm (2) and the left arm (4) of the blowout preventer, drives the right arm (2) and the left arm (4) of the blowout preventer to move relative to each other, and works so that the right arm (2) and the left arm (4) of the blowout preventer exert pressure on the sealing ring (3) to close; S4, the sealing ring (3) applies pressure to the bottom plate (604) and at the same time applies pressure to the spring (602) and the damping rod (603), so that the damping rod (603) cushions the impact force when the spring (602) is reset, thereby preventing the right arm (2) and the left arm (4) of the blowout preventer from being broken due to the sudden increase in oil pressure inside the blowout preventer body (1).

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