CN116641683A - Electrohydraulic central control system applied to unmanned platform - Google Patents

Abstract

The invention discloses an electrohydraulic central control system applied to an unmanned platform. Comprising the following steps: the electric control box of the wellhead control panel is connected with the central control unit through a cable, and an electric control knob of the wellhead control panel is arranged on the electric control box of the wellhead control panel; the wellhead control panel is electrically connected with the wellhead control panel electric control box, and a wellhead control panel hydraulic unit and a wellhead control panel electric control unit are respectively arranged in the wellhead control panel; and the hydraulic control valves in the disc brake hydraulic station unit, the drilling machine hydraulic station unit, the tool hydraulic station unit and the workover rig unit are respectively coupled with the wellhead control disc. The beneficial effects of the invention are as follows: the wellhead control panel is respectively coupled with hydraulic control valves in the panel brake hydraulic station unit, the drilling machine hydraulic station unit, the machine hydraulic station unit and the workover rig unit, so that hydraulic equipment electrohydraulic control of the unmanned platform is realized uniformly.

Description

An electro-hydraulic central control system applied to unmanned platform

technical field

The invention relates to the field of petrochemical technology, in particular to an electro-hydraulic central control system applied to an unmanned platform.

Background technique

The wellhead control panel is a high-precision integrated hydraulic device used to control the downhole safety valve and surface safety valve. The hydraulic oil in the oil tank is pressurized by the hydraulic pump, and the pressure is adjusted by the manual pressure regulating valve, and then output to the Christmas tree through the hydraulic pipeline. The safety valve controls the opening and closing of the safety valve of the Christmas tree.

The conventional wellhead control panel has two modes of local control and remote control. On the conventional mechanical logic wellhead control panel, after the remote shutdown, the local operation must be reset before the operation can continue. On the unmanned platform, most cases do not have The local reset condition requires remote and direct control of the wellhead switch. For this situation, the conventional wellhead control panel can no longer meet the needs of remote control, and an electro-hydraulic central control system applied to unmanned platforms is especially needed.

Moreover, the current wellhead control panel hydraulic system can only control part of the valves of the Christmas tree, and has independent relationships with hydraulic equipment such as the disc brake hydraulic station unit, drilling rig hydraulic station unit, implement hydraulic station unit, and workover rig unit. It is necessary to configure special personnel and special operation instructions, and the hydraulic valves and pressure level standards are also different, which makes management inconvenient.

Contents of the invention

The object of the present invention is to provide an electro-hydraulic central control system applied to an unmanned platform. The valve coupling realizes the electro-hydraulic control of the hydraulic equipment of the unmanned platform through the hydraulic unit of the wellhead control panel and the electronic control unit of the wellhead control panel arranged in the wellhead control panel.

Another object of the present invention is to provide an electro-hydraulic central control system applied to an unmanned platform. The electric control unit of the wellhead control panel is preset for production shut-off, well kill shut-off, first-level emergency stop shut-off, and second-level shut-off. The wellhead control panel shut-off logic sequence of emergency stop shutdown and three-stage emergency stop shutdown can realize the opening or closing of the hydraulic output of the wellhead control panel without local operation and reset, and then control the opening and closing of the safety valve of the Christmas tree.

To achieve the above object, the present invention adopts the following technical solutions, including:

The electrical control box of the wellhead control panel is connected to the central control unit through cables, and the electrical control knob of the wellhead control panel is arranged on the electrical control box of the wellhead control panel;

The wellhead control panel is electrically connected to the wellhead control panel electrical control box, and the wellhead control panel hydraulic unit and the wellhead control panel electric control unit are respectively arranged in the wellhead control panel; and

The hydraulic control valves inside the disc brake hydraulic station unit, the drilling rig hydraulic station unit, the implement hydraulic station unit, and the workover rig unit are respectively coupled with the wellhead control panel.

Preferably, the wellhead control panel hydraulic unit includes:

An oil tank, which is arranged in the wellhead control panel, is used to provide hydraulic oil;

an electric pump connected to the tank via a manifold for providing a source of hydraulic power; and

a pressure regulating valve connected to said electric pump through a manifold for providing pressure drop regulation;

An accumulator, which is connected to the pressure regulating valve through a manifold, is used for accumulating hydraulic pressure.

Preferably, it also includes:

a pressure gauge electrically connected to the accumulator for displaying pressure;

an indicator, which is electrically connected to the accumulator, and is used to display the pressure state of the hydraulic source;

A leakage protector is electrically connected to the accumulator and is used to detect whether there is leakage in the conductor inside the hydraulic unit of the wellhead control panel.

Preferably, it also includes:

A flame arrester, which is arranged in the fuel tank, is used for flame retardancy.

Preferably, it also includes:

A hydraulic balance bladder, which is connected to the oil tank through pipelines and steel cables, and is used for adjustment by expansion or contraction when the pressure of the hydraulic unit of the wellhead control panel is abnormally reduced or increased;

The anti-collision frame, which is covered outside the hydraulic balance bag, is placed under the platform pile foundation through steel wire ropes and fastening bolts, and is submerged 5-10 meters below the sea level.

Preferably, the electric control knob of the wellhead control panel is electrically connected with the electric control unit of the wellhead control panel, and the electro-hydraulic control logic of the electric control unit of the wellhead control panel can be controlled by PLC; Set up the wellhead control panel shutdown logic sequence of production shutdown, well killing shutdown, first-level emergency shutdown, second-level emergency shutdown, and third-level emergency shutdown to realize the opening or closing of the hydraulic output of the wellhead control panel, and then Control the switch of the safety valve of the Christmas tree.

Preferably, a panel button, a time-delay relay and a two-position three-way solenoid valve are also provided in the electric control unit of the wellhead control panel, the panel button is used to control the on-off of the time-delay relay coil, and the time-delay relay The contacts are used to control the power-on and power-off of the solenoid valve, and the two-position three-way solenoid valve is used to convert the electrical switch signal into hydraulic on-off control.

Preferably, the hydraulic control valves of the disc brake hydraulic station unit, the drilling rig hydraulic station unit, the implement hydraulic station unit, and the workover rig unit are in communication with the hydraulic control valves of the wellhead control panel hydraulic unit; the disc brake hydraulic station unit, The electrical signal receiving potentials of the drilling rig hydraulic station unit, the implement hydraulic station unit, and the workover rig unit are electrically connected to the output points of the electric control unit of the wellhead control panel.

Preferably, electronic pressure gauges are respectively provided at the joints of the hydraulic control valves of the disc brake hydraulic station unit, the drilling rig hydraulic station unit, the implement hydraulic station unit, the workover rig unit and the hydraulic control valve of the wellhead control panel hydraulic unit and a stroboscopic photographing device, the electrical pressure gauge and the stroboscopic photographing device are respectively electrically connected to the central control unit, and the electrical pressure gauge is used for real-time monitoring of the pressure at the connection position; the stroboscopic photographing device is used for electronic pressure When the meter reading is abnormal, take a strobe shot of the connected position, which is convenient for analyzing the cause of the abnormal pressure through the photo.

Preferably, a fence electric control switch is provided in the anti-collision frame, the fence electric control switch is electrically connected to the central control, and a rescue handle is provided above the hydraulic balance bag.

The beneficial effects of the present invention are: the wellhead control panel is respectively coupled with the hydraulic control valve inside the disc brake hydraulic station unit, the drilling rig hydraulic station unit, the equipment hydraulic station unit, and the workover rig unit, through the wellhead control panel arranged in the wellhead control panel The hydraulic unit and the electronic control unit of the wellhead control panel are unified to realize the electro-hydraulic control of the hydraulic equipment of the unmanned platform; the electronic control unit of the wellhead control panel is preset for production shutdown, well killing shutdown, first-level emergency stop shutdown, and second-level emergency stop Shutdown, three-level emergency stop and shutdown logic sequence of wellhead control panel shutdown, without local operation reset, can realize the hydraulic output of the wellhead control panel to open or close, and then control the switch of the safety valve of the Christmas tree.

Description of drawings

Figure 1 is a schematic diagram of the invention of an electro-hydraulic central control system applied to an unmanned platform.

Detailed ways

The invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

It should be understood that terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or other elements or combinations thereof.

As shown in Figure 1, a kind of realization form of the present invention, in order to realize above-mentioned object, the present invention adopts following technical scheme, comprises:

The electrical control box 110 of the wellhead control panel is connected with the central control unit 2 through the cable 120, and the electrical control knob 111 of the wellhead control panel is arranged on the electrical control box of the wellhead control panel. As a preference, the electric control knob 111 of the wellhead control panel is electrically connected with the electric control unit 140 of the wellhead control panel, and the electro-hydraulic control logic of the electric control unit 140 of the wellhead control panel can be controlled by PLC; Control unit 140 internally presets the wellhead control panel shutdown logic sequence of production shutdown, well killing shutdown, first-level emergency stop shutdown, second-level emergency stop shutdown, and third-level emergency stop shutdown to realize the hydraulic output of the wellhead control panel Open or close, and then control the switch of the Christmas tree safety valve.

The wellhead control panel 120 is electrically connected to the wellhead control panel electric control box 110 , and the wellhead control panel hydraulic unit 130 and the wellhead control panel electric control unit 140 are respectively arranged in the wellhead control panel 120 . As a preference, the wellhead control panel hydraulic unit 130 includes: an oil tank 131, which is arranged in the wellhead control panel, for providing hydraulic oil; an electric pump 132, which is connected to the oil tank through a manifold, for A hydraulic power source is provided; and a pressure regulating valve 133, which is connected to the electric pump through a manifold, is used to provide step-down regulation; an accumulator 134, which is connected to the pressure regulating valve through a manifold, is used to store hydraulic pressure pressure. As a further preference, it also includes: a pressure gauge 134a, which is electrically connected to the accumulator for displaying pressure; an indicator 134b, which is electrically connected to the accumulator, for displaying the pressure state of the hydraulic source; leakage protection A device 134c, which is electrically connected to the accumulator, is used to detect whether there is leakage in the conductor inside the hydraulic unit of the wellhead control panel. As a further preference, it also includes: a flame arrester 131a, which is arranged in the fuel tank and used for flame retardancy.

The disc brake hydraulic station unit 150, the drilling rig hydraulic station unit 160, the implement hydraulic station unit 170, and the workover rig unit 180 have internal hydraulic control valves respectively coupled with the wellhead control panel. As a preference, the hydraulic control valves of the disc brake hydraulic station unit 150, the drilling rig hydraulic station unit 160, the tool hydraulic station unit 170, and the workover rig unit 180 communicate with the hydraulic control valve of the wellhead control panel hydraulic unit 130; The electrical signal receiving potentials of the disc brake hydraulic station unit 150 , the drilling rig hydraulic station unit 160 , the implement hydraulic station unit 170 , and the workover unit 180 are electrically connected to the output points of the wellhead control panel electric control unit 140 . As a further preference, at the joints of the hydraulic control valves of the disc brake hydraulic station unit 150, the drilling rig hydraulic station unit 160, the tool hydraulic station unit 170, the workover unit 180 and the hydraulic control valve of the wellhead control panel hydraulic unit 130, respectively Electronic pressure gauge 151, electronic pressure gauge 161, electronic pressure gauge 171 and electronic pressure gauge 181 and stroboscopic photographing equipment 152, stroboscopic photographing equipment 162, stroboscopic photographing equipment 172 and stroboscopic photographing equipment 182 are provided. Gauge 151, electronic pressure gauge 161, electronic pressure gauge 171 and electronic pressure gauge 181 and stroboscopic camera equipment 152, stroboscopic camera equipment 162, stroboscopic camera equipment 172 and stroboscopic camera equipment 182 are respectively electrically connected to the central control unit, so The electronic pressure gauge 151, the electronic pressure gauge 161, the electronic pressure gauge 171 and the electronic pressure gauge 181 are used to monitor the pressure at the connection position in real time; The flash photography device 182 is used to perform stroboscopic photography of the connected position when the readings of the electronic pressure gauge 151, electronic pressure gauge 161, electronic pressure gauge 171 or electronic pressure gauge 181 are abnormal, so as to analyze the cause of abnormal pressure through photos.

During use, the hydraulic control valves of the disc brake hydraulic station unit 150, the drilling rig hydraulic station unit 160, the tool hydraulic station unit 170, and the workover unit 180 communicate with the hydraulic control valve of the wellhead control panel hydraulic unit 130; The electrical signal receiving potentials of the disc brake hydraulic station unit 150, the drilling rig hydraulic station unit 160, the implement hydraulic station unit 170, and the workover unit 180 are electrically connected to the output points of the wellhead control panel electric control unit 140. 130 and the electric control unit 140 of the wellhead control panel realize the electro-hydraulic control of the hydraulic equipment of the unmanned platform in a unified manner. Use the panel button 111 to replace the conventional wellhead control panel push-pull valve; through the preset production shutdown, well kill shutdown, first-level emergency stop shutdown, second-level emergency stop shutdown, third-level emergency stop shutdown, and fourth-level emergency stop shutdown The shut-off logic sequence of the wellhead control panel can avoid misoperation by personnel and improve the intelligence and reliability of the equipment. The electric control box 110 of the wellhead control panel is connected with the central control through the cable 112, and the command can be issued remotely through the central control, and the control signal is transmitted through the connection cable between the wellhead control panel 120 and the central control, and the hydraulic output of the wellhead control panel is remotely operated to open or close, thereby remotely Control the switch of the safety valve of the Christmas tree.

In another embodiment, the wellhead control panel hydraulic unit 130 includes: an oil tank 131, which is arranged in the wellhead control panel, for supplying hydraulic oil; an electric pump 132, which is connected to the oil tank through a manifold, Used to provide a hydraulic power source; and a pressure regulating valve 133, which is connected to the electric pump through a manifold, for providing pressure reduction regulation; an accumulator 134, which is connected to the pressure regulating valve through a manifold, for Accumulate hydraulic pressure.

In another embodiment, it also includes: a pressure gauge 134a, which is electrically connected to the accumulator, for displaying the pressure; an indicator 134b, which is electrically connected to the accumulator, and is used for displaying the pressure state of the hydraulic source ; Leakage protector 134c, which is electrically connected to the accumulator, and is used to detect whether there is leakage in the conductor inside the hydraulic unit of the wellhead control panel.

In another embodiment, it further includes: a flame arrester 131a, which is arranged in the fuel tank and used for flame retardancy.

In another embodiment, it also includes: a hydraulic balance bag 190, which is connected to the oil tank through a pipeline and a steel cable, and is used for expanding and or shrink to adjust; the anti-collision frame 191, its cover is located at the outside of the hydraulic balance bag, and is placed below the platform pile foundation by steel wire rope and fastening bolts, and sinks at 5-10 meters below the sea level.

In another embodiment, the electric control knob 111 of the wellhead control panel is electrically connected with the electric control unit 140 of the wellhead control panel, and the electro-hydraulic control logic of the electric control unit 140 of the wellhead control panel can be controlled by PLC; The panel electric control unit 140 presets the wellhead control panel shutdown logic sequence of production shutdown, well killing shutdown, first-level emergency stop shutdown, second-level emergency stop shutdown, and third-level emergency stop shutdown to realize wellhead control panel shutdown. The hydraulic output is turned on or off, thereby controlling the opening and closing of the safety valve of the Christmas tree.

In another embodiment, a panel button 141, a delay relay 142 and a two-position three-way solenoid valve 143 are also provided in the wellhead control panel electric control unit 140, wherein the panel button 141 is used to control the delay On and off of the relay coil, the contacts of the delay relay 142 are used to control the energization and de-energization of the solenoid valve, and the two-position three-way solenoid valve 143 is used to convert the electrical switch signal into hydraulic on-off control.

In another embodiment, the hydraulic control valves of the disc brake hydraulic station unit 150, the drilling rig hydraulic station unit 160, the implement hydraulic station unit 170, and the workover unit 180 communicate with the hydraulic control valve of the wellhead control panel hydraulic unit 130; The electrical signal reception potentials of the disc brake hydraulic station unit 150 , drilling rig hydraulic station unit 160 , implement hydraulic station unit 170 , and workover unit 180 are electrically connected to the output points of the wellhead control panel electric control unit 140 .

In another embodiment, the hydraulic control valves of the disc brake hydraulic station unit 150, the drilling rig hydraulic station unit 160, the implement hydraulic station unit 170, the workover rig unit 180 and the hydraulic control valve of the wellhead control panel hydraulic unit 130 Electronic pressure gauge 151, electronic pressure gauge 161, electronic pressure gauge 171 and electronic pressure gauge 181 and stroboscopic photographing device 152, stroboscopic photographing device 162, stroboscopic photographing device 172 and stroboscopic photographing device 182 are respectively provided at the junction, so The electronic pressure gauge 151, the electronic pressure gauge 161, the electronic pressure gauge 171 and the electronic pressure gauge 181 and the stroboscopic camera equipment 152, the stroboscopic camera equipment 162, the stroboscopic camera equipment 172 and the stroboscopic camera equipment 182 are respectively connected with the central control unit electronically connected, the electronic pressure gauge 151, electronic pressure gauge 161, electronic pressure gauge 171 and electronic pressure gauge 181 are used to monitor the pressure at the connection position in real time; 172 and stroboscopic photographing device 182, used to perform stroboscopic photography of connected positions when the readings of electronic pressure gauge 151, electronic pressure gauge 161, electronic pressure gauge 171 or electronic pressure gauge 181 are abnormal, so as to analyze the cause of abnormal pressure through photos .

In another embodiment, a fence electric control switch is provided in the anti-collision frame 191 , the fence electric control switch is electrically connected to the central control, and a rescue handle is provided above the hydraulic balance bag 190 . When a blowout occurs or an abnormal situation occurs on the platform, the anti-collision frame 191 can be unlocked through the central control to electrically control the switch fence, and the hydraulic balance bag 190 will float to the sea surface under the buoyancy of the seawater, and those who jump off the platform can grab the rescue handle and wait for the follow-up rescue.

In summary, the present invention is an electro-hydraulic central control system 1 applied to an unmanned platform. The wellhead control panel is respectively connected with the hydraulic control unit inside the disc brake hydraulic station unit, drilling rig hydraulic station unit, implement hydraulic station unit, and workover unit. Valve coupling, through the wellhead control panel hydraulic unit and the wellhead control panel electronic control unit set in the wellhead control panel, the electro-hydraulic control of the hydraulic equipment of the unmanned platform is realized; Shutdown, first-level emergency stop shutdown, second-level emergency stop shutdown, third-level emergency stop shutdown logic sequence of the wellhead control panel, without the need for local operation reset, the hydraulic output of the wellhead control panel can be turned on or off, and then Control the switch of the safety valve of the Christmas tree.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (10)

1. An electrohydraulic central control system for an unmanned platform, comprising:

the electric control box of the wellhead control panel is connected with the central control unit through a cable, and an electric control knob of the wellhead control panel is arranged on the electric control box of the wellhead control panel;

the wellhead control panel is electrically connected with the wellhead control panel electric control box, and a wellhead control panel hydraulic unit and a wellhead control panel electric control unit are respectively arranged in the wellhead control panel; and

the hydraulic control valves in the disc brake hydraulic station unit, the drilling machine hydraulic station unit, the tool hydraulic station unit and the workover rig unit are respectively coupled with the wellhead control disc.

2. The electro-hydraulic central control system for use with an unmanned platform according to claim 1, wherein the wellhead control disk hydraulic unit comprises:

the oil tank is arranged in the wellhead control disc and is used for providing hydraulic oil;

the electric pump is connected with the oil tank through a manifold and is used for providing a hydraulic power source; and

a pressure regulating valve connected to the electric pump through a manifold for providing pressure reducing regulation;

and the accumulator is connected with the pressure regulating valve through a manifold and used for accumulating hydraulic pressure.

3. The electro-hydraulic central control system for use with an unmanned platform as claimed in claim 2, further comprising:

a pressure gauge electrically connected to the accumulator for displaying pressure;

an indicator electrically connected to the accumulator for displaying a pressure state of the hydraulic source;

and the electric leakage protector is electrically connected with the energy accumulator and is used for detecting whether electric leakage exists in the inner conductor of the wellhead control disc hydraulic unit.

4. The electro-hydraulic central control system for use with an unmanned platform as claimed in claim 2, further comprising:

and the flame arrester is arranged in the oil tank and is used for flame retardance.

5. The electro-hydraulic central control system for use with an unmanned platform as claimed in claim 2, further comprising:

the hydraulic balance bag is connected with the oil tank through a pipeline and a steel cable and is used for adjusting through expansion and contraction when the pressure of the wellhead control disc hydraulic unit is abnormally reduced or increased;

and the anti-collision frame is covered outside the hydraulic balance bag, is arranged below the platform pile foundation through a steel wire rope and a fastening bolt and is sunk at a position 5-10 meters below the sea level.

6. Electro-hydraulic central control system for unmanned aerial vehicles according to claim 1 or 2, wherein: the electric control knob of the wellhead control panel is electrically connected with the electric control unit of the wellhead control panel and can control the electrohydraulic control logic of the electric control unit of the wellhead control panel through a PLC; and presetting a wellhead control panel shutdown logic sequence of production shutdown, well killing shutdown, primary scram shutdown, secondary scram shutdown and tertiary scram shutdown in the wellhead control panel electric control unit, so as to realize hydraulic output opening or closing of the wellhead control panel, and further control the opening and closing of the Christmas tree safety valve.

7. The electro-hydraulic central control system for an unmanned platform according to claim 6, wherein: the wellhead control panel electric control unit is internally provided with a panel button, a delay relay and a two-position three-way electromagnetic valve, wherein the panel button is used for controlling the on-off of a coil of the delay relay, a contact of the delay relay is used for controlling the power on and power off of the electromagnetic valve, and the two-position three-way electromagnetic valve is used for converting an electric switch signal into hydraulic on-off control.

8. The electro-hydraulic central control system for an unmanned platform according to claim 1, wherein: the hydraulic control valves of the disc brake hydraulic station unit, the drilling machine hydraulic station unit, the tool hydraulic station unit and the workover rig unit are communicated with the hydraulic control valve of the wellhead control disc hydraulic unit; and the electric signal receiving potentials of the disc brake hydraulic station unit, the drilling machine hydraulic station unit, the tool hydraulic station unit and the workover rig unit are electrically connected with the output point positions of the wellhead control disc electric control unit.

9. The electro-hydraulic central control system for an unmanned platform according to claim 8, wherein: the hydraulic control valves of the disc brake hydraulic station unit, the drilling machine hydraulic station unit, the tool hydraulic station unit and the workover rig unit are respectively provided with an electronic pressure gauge and a stroboscopic photographing device at the connection position of the hydraulic control valve of the wellhead control disc hydraulic unit, the electronic pressure gauge and the stroboscopic photographing device are respectively electrically connected with the central control unit, and the electronic pressure gauge is used for monitoring the pressure of the connection position in real time; the stroboscopic photographing equipment is used for stroboscopic photographing of the communication position when the reading of the electronic pressure gauge is abnormal, and analyzing the pressure abnormality cause through a photo.

10. The electro-hydraulic central control system for an unmanned platform according to claim 8, wherein: the anti-collision frame is internally provided with a fence electric control switch, the fence electric control switch is electrically connected with the central control, and a rescue handle is arranged above the hydraulic balance bag.