CN106150473B - Control system of wellhead - Google Patents
Control system of wellhead Download PDFInfo
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- CN106150473B CN106150473B CN201510198622.4A CN201510198622A CN106150473B CN 106150473 B CN106150473 B CN 106150473B CN 201510198622 A CN201510198622 A CN 201510198622A CN 106150473 B CN106150473 B CN 106150473B
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Abstract
The invention discloses a control system of a wellhead, which comprises: the actuating mechanism is used for controlling the opening/closing of the wellhead; a detection device for detecting the operating state parameter; the controller is used for controlling the actuating mechanism according to the operating instruction so as to complete the opening/closing of the wellhead; and the control center monitors the state of the wellhead according to the running state parameters of the actuating mechanism forwarded by the controller, and sends a corresponding operating instruction to the controller when the state of the wellhead is abnormal. The control system of the embodiment of the invention monitors the state of the wellhead according to the operating state parameters of the actuating mechanism, and controls the actuating mechanism according to the operating instruction when the state of the wellhead is abnormal so as to complete the opening/closing of the wellhead.
Description
Technical Field
The invention relates to the technical field of oil drilling, in particular to a control system of a wellhead.
Background
In the process of petroleum and natural gas exploration and development, when overflow, kick or blowout occurs at a well head, the well head of an oil and gas well needs to be closed by related personnel such as drillers operating independent controllers of various objects so as to avoid blowout accidents.
In general, a driller can close a well according to well closing programs of various working conditions in well control implementation rules. However, since each object is controlled by a plurality of sets of independent control devices, if an emergency situation occurs, once a driller is affected by psychological quality or other factors, the situation that the well shut-in operation cannot be performed according to the well shut-in procedure may be caused, the risk of economic loss and casualties exists, and the safety and reliability of the system cannot be ensured.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art described above.
Therefore, the invention aims to provide a wellhead control system which can quickly implement drilling emergency shut-in and improve the safety and reliability of the system.
In order to achieve the above object, an embodiment of the present invention provides a control system for a wellhead, including: the actuating mechanism is used for controlling the opening/closing of a wellhead and comprises a mud pump, a drilling disk/top drive and a blowout preventer; the detection device is used for detecting the running state parameters of the actuating mechanism; the controller is respectively connected with the executing mechanism and the detecting device and is used for controlling the executing mechanism according to an operating instruction so as to complete the opening/closing of the wellhead; and the control center is connected with the controller and used for monitoring the state of the wellhead according to the running state parameters of the executing mechanism forwarded by the controller and sending a corresponding operating instruction to the controller when the state of the wellhead is abnormal.
According to the control system of the wellhead, provided by the embodiment of the invention, the state of the wellhead is monitored according to the operating state parameters of the actuating mechanism, and the actuating mechanism is controlled according to the operating instruction when the state of the wellhead is abnormal so as to complete the opening/closing of the wellhead.
In addition, the control system of the wellhead according to the above embodiment of the invention may also have the following additional technical features:
further, in one embodiment of the present invention, the detection device includes: a pressure transmitter for detecting a pressure of the blowout preventer; the mud pump running state sensor is used for detecting the running state of the mud pump; and a drill plate/top drive running state sensor for detecting the running state of the drill plate/top drive.
Further, in one embodiment of the present invention, the controller includes: the analog-to-digital conversion module ADC is used for receiving and converting the running state parameters detected by the detection device; the digital quantity input module DI is connected with the analog-to-digital conversion module ADC and is used for sending the running state parameters to the controller; and the digital quantity output module DO is connected with the actuating mechanism and is used for sending a driving signal to the actuating mechanism so that the actuating mechanism completes the opening/closing of the wellhead.
Further, in one embodiment of the present invention, the controller is connected to the actuator through a control switch.
Further, in one embodiment of the present invention, the control switch includes a solenoid valve and a relay.
Further, in an embodiment of the present invention, the controller may be a single chip microcomputer.
Further, in one embodiment of the present invention, the control center is connected to the controller via an inteerbus bus.
Further, in one embodiment of the present invention, the control center includes a limited drill floor tablet and a push button drill console.
Further, in one embodiment of the invention, the blowout preventer may be an annular blowout preventer.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block diagram of a control system for a wellhead in accordance with one embodiment of the present invention;
FIG. 2 is a schematic block diagram of a control system of a wellhead in accordance with one embodiment of the present invention; and
fig. 3 is a schematic block diagram of a control system of a wellhead in accordance with another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
A control system of a wellhead according to an embodiment of the present invention is described below with reference to the accompanying drawings. Referring to fig. 1, the control system 10 includes: the actuator 100, the detection device 200, the controller 300 and the control center 400.
Wherein the actuator 100 is used for controlling the opening/closing of the wellhead, and the actuator 100 comprises a mud pump, a drilling disk/top drive and a blowout preventer. The detection device 200 is used to detect an operating state parameter of the actuator 100. The controller 300 is respectively connected with the actuator 100 and the detection device 200, and the controller 300 is used for controlling the actuator 100 according to an operation command so as to complete the opening/closing of the wellhead. The control center 400 is connected to the controller 300, and the control center 400 is configured to monitor a wellhead state according to the operation state parameters of the actuator 100 forwarded by the controller 300, and send a corresponding operation instruction to the controller 300 when the wellhead state is abnormal. When the control system provided by the embodiment of the invention encounters a dangerous situation under the working condition in drilling and cannot close the well according to a conventional well closing program, related operators such as drillers can operate with both hands to quickly close the well in drilling emergency, so that the closing of a mud pump, a rotary table/top drive and a blowout preventer is automatically realized according to steps.
Further, in one embodiment of the present invention, the controller 300 is connected to the actuator 100 through a control switch. Preferably, in one embodiment of the present invention, the control switch includes a solenoid valve and a relay.
Further, in an embodiment of the present invention, the controller 300 may be a single chip microcomputer. The Single chip microcomputer is an integrated circuit chip, and integrates functions (possibly including a display driving circuit, a pulse width modulation circuit, an analog multiplexer, an A/D converter and other circuits) of a central processing unit CPU, a random access memory RAM, a read only memory ROM, various I/O ports, an interrupt system, a timer/counter and the like with data processing capacity into a silicon chip by adopting a super large scale integrated circuit technology to form a small and perfect microcomputer system, and the Single chip microcomputer is widely applied to the field of industrial control.
Further, in one embodiment of the present invention, the control center 400 is connected to the controller 300 through an inteerbus bus.
Wherein, in one embodiment of the present invention, the control center 400 includes a wired drill floor tablet and a push-button drill floor. That is, the operator can see the state of the controlled object on the panel/screen of the control center 400, which is equivalent to monitoring the state of the wellhead according to the operation state parameters of the actuator 100 forwarded by the controller 300, and once the wellhead state is abnormal, a corresponding operation instruction is sent to the controller 300, so that when the driller encounters an emergency under the working conditions during drilling and cannot close the well according to the conventional well closing program, the driller can operate with both hands to quickly perform drilling emergency well closing. Automatically realizing the stop of a mud pump → the stop of a drilling disk/top drive → the close of a blowout preventer according to steps.
Further, in one embodiment of the present invention, the blowout preventer may be an annular blowout preventer. The annular blowout preventer is usually provided with a large gate of a ram type blowout preventer, a sealed annular space is formed between a pipe column and a shaft during operation, and well plugging can be independently completed under the condition that the pipe column is not arranged in a well.
Further, in an embodiment of the present invention, referring to fig. 2, the controller 300 includes: the digital-to-analog conversion module ADC, the digital input module DI and the digital output module DO.
The analog-to-digital conversion module ADC is configured to receive and convert the operating state parameter detected by the detecting device 200. The digital input module DI is connected to the analog-to-digital conversion module ADC, and the digital input module DI is used for sending the operation status parameters to the controller 300. The digital output module DO is connected to the actuator 100, and the digital output module DO sends a driving signal to the actuator 100, so that the actuator 100 completes opening/closing of the wellhead.
In one embodiment of the present invention, the control system 10 of an embodiment of the present invention is used to effect control of mud pump stop, drilling/top drive stop and blowout preventer shut-off. In an embodiment of the present invention, a PAC control system may be adopted, which is equivalent to the controller 300 being a PAC controller, and includes: an integrated annular control pressure acquisition analog-to-digital conversion module ADC (operative to receive and convert the operating condition parameters detected by the detection device 200), a digital quantity input DI (operative to send the operating condition parameters to the controller 300, which includes proximity switches and safety barriers) to the indicating input, and a digital quantity output module DO (operative to send a drive signal to the actuator 100) for controlling the output. The blowout preventer is preferably an annular blowout preventer, and the annular blowout preventer is controlled by a surface blowout preventer, and the rotary valve is driven by the electromagnetic valve to operate. The stop of the slurry pump and the stop of the rotary disc/top drive are controlled by a relay (normally closed).
In the embodiment of the present invention, the PAC controller combines the inherent reliability, robustness and distribution characteristics of the PLC and the advantages of the processor, memory and software of the PC, the PAC is continuously developed along with the development of the modern computer hardware and software technology, communication technology and control technology, and the PAC platform is an excellent combination of the modern information technology "3 c" (computer, communication and control).
Further, in an embodiment of the present invention, referring to fig. 2, the detecting device 200 includes: a pressure transmitter 201, a mud pump running status sensor 202 and a turntable/top drive running status sensor 203.
Wherein the pressure transmitter 201 is used to detect the pressure of the blowout preventer. The mud pump operating condition sensor 202 is used to detect the operating condition of the mud pump. The drill floor/top drive operational status sensor 203 is used to detect the operational status of the drill floor/top drive.
Specifically, in one embodiment of the present invention, referring to fig. 2, the control system 10 of the embodiment of the present invention comprises a pressure transmitter 201 (which is equivalent to detecting the pressure of a blowout preventer), a top drive/rotary table operating state sensor 203 (which is equivalent to detecting the operating state of a rotary table/top drive operating state sensor), a mud pump operating state sensor 202 (which is equivalent to detecting the operating state of a mud pump), the safety grid is connected with an analog-to-digital conversion module ADC and a digital quantity input module DI of the PAC controller through cables, transmitted to a console, i.e., a controller 300, through an inteerbus bus, the controller 300 collects a control command, i.e., an operation instruction, of an operator through a control center 400, the electromagnetic valve and the relay are controlled through the digital quantity output module DO, and finally the control purposes of stopping the slurry pump, stopping the drilling disk/top drive and closing the annular blowout preventer are achieved.
Further, in one embodiment of the present invention, all controls of the present embodiment are provided with control implementation feedback devices, such as valve in-place indicators, mud pump operational status indicators, and rotary table/top drive operational status indicators, to form a closed loop feedback regulation.
In one embodiment of the present invention, referring to fig. 3, a control system 10 of the embodiment of the present invention includes: the explosion-proof magnetic force starter comprises an explosion-proof main power supply control box 1, an explosion-proof motor 2, an explosion-proof magnetic force starter 3, an electronic pressure controller 4, a push-button driller control console 5, a wired driller console tablet personal computer 6, an electric cabinet 7, an explosion-proof audible and visual alarm 8, an electromagnetic valve box 9 and an explosion-proof junction box 11.
The explosion-proof main power control box 1 is mainly used for power supply access and power supply distribution. The explosion-proof motor 2 is mainly used for driving the three-cylinder plunger pump and providing power liquid for the system. The explosion-proof magnetic starter 3 is used for controlling the operation and stop of the motor. The electronic pressure controller 4 is mainly used for controlling the on/off of an alternating current contactor in the magnetic starter, such as starting the motor when the system pressure is ensured to be 18.9MPa, and stopping the motor when the system pressure is 21 MPa. The electric cabinet 7 is used for installing elements such as a controller, a relay, a safety barrier and the like. The explosion-proof audible and visual alarm 8 is mainly used for system alarm reminding. The solenoid valve box 9 is used for mounting a solenoid valve, a pressure transmitter and the like. The explosion-proof junction box 11 is mainly used for the access of pressure signals and position signals.
According to the control system of the wellhead, provided by the embodiment of the invention, the state of the wellhead is monitored according to the operating state parameters of the actuating mechanism, and the actuating mechanism is controlled according to the operating instruction when the state of the wellhead is abnormal so as to complete the opening/closing of the wellhead.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (7)
1. A control system for a wellhead, comprising:
the actuating mechanism is used for controlling the opening/closing of a wellhead and comprises a mud pump, a drilling disk/top drive and a blowout preventer;
a detection device for detecting an operating state parameter of the actuator, wherein the detection device comprises: a pressure transmitter for detecting a pressure of the blowout preventer; the mud pump running state sensor is used for detecting the running state of the mud pump; the drilling disc/top drive running state sensor is used for detecting the running state of the drilling disc/top drive;
the controller, the controller respectively with actuating mechanism with detection device links to each other, the controller is used for according to operating instruction to actuating mechanism controls to accomplish the open/close of well head, wherein, the controller includes: the analog-to-digital conversion module ADC is used for receiving and converting the running state parameters detected by the detection device; the digital quantity input module DI is connected with the analog-to-digital conversion module ADC and is used for sending the running state parameters to the controller; the digital quantity output module DO is connected with the actuating mechanism and is used for sending a driving signal to the actuating mechanism so that the actuating mechanism completes the opening/closing of the wellhead; and
the control center is connected with the controller and used for monitoring the state of the wellhead according to the running state parameters of the executing mechanism forwarded by the controller and sending a corresponding operating instruction to the controller when the state of the wellhead is abnormal; wherein the content of the first and second substances,
all controls are provided with control execution feedback devices to form closed loop feedback regulation, wherein the execution feedback devices are valve in-place indication, slurry pump running state indication and turntable/top drive running state indication.
2. A control system for a wellhead as claimed in claim 1 in which the controller is connected to the actuator by a control switch.
3. A control system of a wellhead as claimed in claim 2 in which the control switch comprises a solenoid valve and a relay.
4. A control system at a wellhead as claimed in claim 1 wherein the controller is a single chip.
5. A control system at a wellhead as claimed in claim 1 in which the control centre is connected to the controller by an inteerbus bus.
6. The control system of the wellhead according to claim 1, wherein the control center comprises a wired driller's stand industrial tablet and a push button driller's console.
7. A control system of a wellhead according to claim 1 characterised in that the blowout preventer is an annular blowout preventer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198622.4A CN106150473B (en) | 2015-04-23 | 2015-04-23 | Control system of wellhead |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198622.4A CN106150473B (en) | 2015-04-23 | 2015-04-23 | Control system of wellhead |
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| Publication Number | Publication Date |
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| CN106150473A CN106150473A (en) | 2016-11-23 |
| CN106150473B true CN106150473B (en) | 2020-01-10 |
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| CN201510198622.4A Active CN106150473B (en) | 2015-04-23 | 2015-04-23 | Control system of wellhead |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894778A (en) * | 2017-03-29 | 2017-06-27 | 西南石油大学 | A kind of kill-job operation choke valve automatic control system and its method based on feedback regulation |
| CN107355193A (en) * | 2017-08-30 | 2017-11-17 | 新疆双诚电气股份有限公司 | Oil well numerical control blowout hookup |
| CN107780919A (en) * | 2017-09-22 | 2018-03-09 | 中国石油集团西部钻探工程有限公司 | Long-range gas well switch board and its long-range control method |
| CN111636836B (en) * | 2020-05-13 | 2022-04-26 | 中石化石油工程技术服务有限公司 | Integrated control system of driller's platform |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3830306A (en) * | 1971-12-22 | 1974-08-20 | C Brown | Well control means |
| US7942081B2 (en) * | 2008-08-28 | 2011-05-17 | Hawk Industries, Inc. | Automatically adjustable power jaw |
| CN201363135Y (en) * | 2009-02-23 | 2009-12-16 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic automatic control device for protecting gas-oil wells |
| CN101482007A (en) * | 2009-02-23 | 2009-07-15 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic automatic controller used for oil gas well protection |
| CN204152474U (en) * | 2014-10-22 | 2015-02-11 | 连军 | A kind of for underground work automatic monitoring oil blowout hookup |
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