CN106020102B - A kind of subsea production tree intelligent control system and its control method - Google Patents
A kind of subsea production tree intelligent control system and its control method Download PDFInfo
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- CN106020102B CN106020102B CN201610574013.9A CN201610574013A CN106020102B CN 106020102 B CN106020102 B CN 106020102B CN 201610574013 A CN201610574013 A CN 201610574013A CN 106020102 B CN106020102 B CN 106020102B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14006—Safety, monitoring in general
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Abstract
The invention discloses a kind of subsea production tree intelligence control system and its control method, including water surface master station, umbilical cables, subsea control modules (SCM), subsea production tree；The main control station includes surface control station and water surface PLC control system；The data of subsea production tree are monitored by the sensor device being mounted on production tree；Water surface PLC control system carries out the data of monitoring the admission of data, analysis, each data are monitored in real time, then it sends out corresponding control instruction and is transmitted to subsea control modules through umbilical cables, and then subsea control modules are operated to complete control, the control method of water surface PLC control system mainly includes 5 parts：Production system, data processing, instrument dynamic monitoring, flow control, signal transmission；Production system includes normal production procedure, above repaiies flow, work flow and emergent flow.The present invention realizes the automation of subsea production tree control, control accuracy and reaction speed all greatly improve by adding water surface PLC controls system.
Description
Technical field
The present invention relates to a kind of subsea production tree control system and its control methods, belong to offshore oil machinery equipment neck
Domain.
Background technology
Subsea Production Control System plays the safety and steady flowing and raising exploitation of oil gas in production process most important
Effect, with marine oil and gas exploit from shallow sea to deep-sea develop, marine oil and gas exploitation control require also improve therewith, from mesh
Preceding semiautomatic control turns to digital automatic control direction and develops comprehensively.Subsea Production Control System mainly uses hydraulic control
System, including full hydraulic system, compound electrohydraulic system.The most common control system in deep-sea is compound electrohydraulic control system at present,
It is communicated by water surface master station with subsea control modules (SCM), and SCM receives the order of master station to each on production tree
Class valve carries out switch control and carries out aperture control, while monitor the letter of the sensor on subsea production tree to production oil nozzle
Number, signal is passed into water surface master station, when a failure occurs, alarm can only be sent out, it is impossible to automatically control, therefore it has
It is unidirectionally controlled, the shortcomings that digitized degree is low.
In view of the above-mentioned problems, there is scholar to carry out correlative study both at home and abroad, and certain achievement is obtained, as Harbin Institute of Engineering is big
Wang Junmin's《Test subsea production tree control module development》, China University Of Petroleum Beijing Zhu Gaolei et al.《Test is used
Subsea production tree control module development》, but above-mentioned academy's successes still fail comprehensively to solve the above problems, especially in safety
In terms of guarantee and automation, Shortcomings are gone back.
Invention content
For existing subsea production tree control system there are the problem of, the present invention proposes a kind of subsea production tree and intelligently controls
Method processed has carried out subsea control modules control program and has designed and developed, so as to fulfill by adding the water surface based on PLC point
Analysis performs processing module, to realize each valve opening of automatic braking production tree and closing；Automatic adjustment production oil nozzle, to control stream
The size of amount；The subsea production tree production pressure of comprehensive utilization monitoring, annular pressure, oil gas leakage monitoring, is recovered the oil at production temperature
Valve location, oil nozzle position, oil nozzle pressure difference, subsurface environment data are set, the security situation of automatic identification oil field development operation is gone forward side by side
Row is corresponding to be adjusted.
The present invention proposes following technical scheme：
A kind of subsea production tree intelligence control system, including water surface master station, umbilical cables, subsea control modules (SCM), water
Lower production tree；Storm valve, production main valve, production flutter valve, Annulus master valve, the annular space wing are installed on the subsea production tree
Valve, well workover valve, switching valve, methanol injection valve, preservative injection valve, paraffin remover injection valve, production channel regulating valve, and equipped with biography
Sensor arrangement；The water surface master station includes surface control station and water surface PLC control system, the connection of water surface PLC control system
Surface control station, surface control station connection subsea control modules, subsea control modules are connected respectively by the actuator of inside setting
It connects storm valve, production main valve, production flutter valve, Annulus master valve, annulus wing valve, well workover valve, switching valve, methanol injection valve, prevent
Rotten agent injection valve, paraffin remover injection valve, production channel regulating valve；By the sensor device that is mounted on production tree to adopting under water
Flow, the state of oil nozzle and aperture, major loop, annular space circuit, the valve of chemical agent infusion circuit, temperature, the pressure that oil is set
Data be monitored；Water surface PLC control system carries out the data of monitoring the admission of data, analysis, monitors each data in real time
It is whether normal, it then sends out corresponding control instruction and is transmitted to subsea control modules (SCM) through umbilical cables, by subsea control modules
Control operation storm valve, production main valve, production flutter valve, Annulus master valve, annulus wing valve, well workover valve, switching valve, methanol injection
Valve, preservative injection valve, paraffin remover injection valve, production channel regulating valve.
The production tree intelligentized control method assigns instruction from water surface PLC control system to surface control station, and then operates water
Lower control module is completed, and the control method of water surface PLC control system mainly includes 5 parts：Production system, data processing, instrument
Table dynamic monitoring, flow control, signal transmission；Production system includes normal production procedure, above repaiies flow, work flow and emergent
Flow.
Normal production procedure step is as follows：
Whether pressure, the temperature of detection production and annular space are normal；Open the regulating valve of major loop, paraffin valve, methanol injection
Valve, preservative injection valve produce main valve；Production oil nozzle is opened, starts paraffin remover injection device, methanol dosing system, preservative
Injection device, and set the aperture of paraffin remover injection valve, methanol injection valve and preservative injection valve；During production in real time
Whether the temperature, pressure of monitoring production and annular space is normal, when abnormal and failure cannot exclude or produce stopping, pressing
Stop button terminates to produce, and closes each injection device and each valve successively.
On to repair process step as follows：
Whether network analysis needs well workover, presses well workover button, stops production, will produce main valve, produces flutter valve, the annular space wing
Valve, switching valve are closed, and Annulus master valve and well workover valve are opened, workover rig is allow to be connected with the annular space of production tree, thus into
Row well workover.
Workflow steps are as follows：
Work flow includes three kinds of wax removal, water filling and gas injection work flows；Wax removal flow is along chemical agent by paraffin remover
What is set on injection pipeline to production tree is electric-hydraulic combined through device, and the electric-hydraulic combined device that runs through is by production tree ontology and production tree
On boll-weevil hanger perforation, paraffin remover enters oil pipe by production tree ontology and hanger, so as to carry out wax removal operation；Water filling
It is to open production main valve and production channel regulating valve with gas injection flow, closes Annulus master valve, annulus wing valve, well workover valve and conversion
Valve starts injection pump and is injected into oil pipe along pipeline, is re-introduced among stratum.
Emergent flow includes：
The data of monitoring are monitored in real time, such as encounter monitoring numerical value more than dangerous values, the feelings for the pump that builds the pressure, suppresses
Condition, and adjust failure, then close storm valve, cut-out production runner；Switching valve is opened to carry out pressure release or open Annulus master valve
Pressure release is carried out with annulus wing valve, stops pressure release after pressure recovery to regime values.
Data processing flow includes：
Data processing is that the data of monitoring and data are carried out intelligent comparison analysis, when monitoring data are not in normal range (NR)
It is interior, adjust instruction is sent out by PLC control system, underground actuator is adjusted, and measuring instrument carries out data monitoring after adjustment
With acquisition, the data of acquisition are passed to ground PLC system along umbilical cables, are compared again with database, recycled with this past
It is multiple.
Instrument dynamic monitoring flow includes：
Instrument dynamic monitoring is mainly monitored into trip temperature, pressure and each instrumented data with adopting using underwater sensor and instrument
Collection, the state of valve and the monitoring of position, the measurement of electric current, voltage carry out the adjusting of valve opening using actuator.
Flow control flow includes：
The control of flow is that flow is monitored first, and the adjusting of flow is carried out according to the condition of production, right after adjusting
The pressure of production channel is monitored, and when pressure rise easily causes the phenomenon that builds the pressure, need to be carried out pressure discharge operations, then be needed convection current again
Amount is monitored；When pressure normally then needs to carry out lasting monitoring to the pressure for producing channel.
Signal transmission flow includes：
The transmission of signal is that PLC control system sends out electric signal and passes to subsea control modules by umbilical cables, underwater to control
Signal is passed to underwater each actuator by molding block through cable, and the executive condition of underwater actuator and the signal of sensor are through electricity
Cable, SCM, umbilical cables pass to water surface PLC control system.
The advantage of the invention is that：
1st, newly-increased water surface PLC control system realizes each valve opening of automatic braking production tree and closing, automatic adjustment life
Oil-producing mouth, to control the size of flow；
2nd, the subsea production tree production pressure of monitoring can be comprehensively utilized, produce temperature, annular pressure, oil gas leakage prison
Survey, production tree valve location, oil nozzle position, oil nozzle pressure difference, subsurface environment data, the safe feelings of automatic identification oil field development operation
Condition, and adjusted accordingly；
3rd, water surface PLC control system can preserve the historical data of admission, and the data enrolled are analyzed in real time,
If encountering production alarm, and reason is analyzed immediately, and send out signal instruction, reduce manual work intensity；
4th, dual system is formed with original surface control station, improves intelligentized degree, while improve control system
Security performance；
5th, solve the problems, such as that compound electrichydraulic control is unidirectionally controlled, water surface PLC control system controls the fortune of production tree in real time
Row, control accuracy and reaction speed have bigger raising.
Description of the drawings
Fig. 1 is the system structure diagram of the present invention；
Fig. 2 is the control planning figure of the present invention；
Fig. 3 is the functional diagram of the water surface PLC control system of the present invention；
Fig. 4 is the flow chart of the normal production system of the present invention；
Fig. 5 be the present invention on repair flow chart；
Fig. 6 is the operation process chart of the present invention；
Fig. 7 is the emergent flow chart of the present invention；
Fig. 8 is the flow chart of data processing figure of the present invention；
Fig. 9 is the instrument dynamic monitoring flow chart of the present invention；
Figure 10 is the flow control flow chart of the present invention；
Figure 11 is the signal transmission flow figure of the present invention.
In figure, 1, water surface PLC control system, 2, surface control station, 3, subsea control modules, 4, storm valve, 5, raw
Produce main valve, 6, production flutter valve, 7, Annulus master valve, 8, annulus wing valve, 9, well workover valve, 10, switching valve, 11, methanol injection valve, 12,
Preservative injection valve, 13, paraffin remover injection valve, 14, production channel regulating valve.
Specific embodiment
The present invention is described in further detail for embodiment in below in conjunction with the accompanying drawings, but does not form to the present invention's
Any restrictions.
On the basis of compound electrohydraulic control system, propose a kind of completely new design with reference to production tree structure design and think
The subsea production tree intelligent control system and its control method on road.
As depicted in figs. 1 and 2, hydraulic pressure is passed to subsea control modules 3, underwater control by surface control station 2 through umbilical cables
Mainly for tool there are two types of function, one kind is control function to module 3, and each valve on underwater production facility passes through electro-hydraulic mixing control
Mode controls, such as the storm valve of subsea tree 4, production main valve 5, production flutter valve 6, Annulus master valve 7, the annular space wing
The opening of valve 8, switching valve 10, each chemical agent injection valve etc. and closing are controlled；According to the Exploitation Status of oil field reality, adjust
The aperture of control choke, regulates and controls flow；And the chemical agents filling such as control methanol, antisludging agent and paraffin remover control and
The opening and closing of related valve；It is by that will produce main valve 5, and produce flutter valve 6, annulus wing valve 8 for well workover control, switching valve 10 closes
It closes, Annulus master valve 7 and well workover valve 9 is opened, workover rig is allow to connect to realize with the annular space of production tree.Another kind is prison
Brake, by the sensor device that is mounted on subsea production tree to flow, temperature, pressure, the state of valve, valve
Aperture, the position of valve, oil gas leakage, environments such as subsea are monitored.Subsea control modules 3 pass the information of monitoring through umbilical cables
Water surface PLC control system 1 is passed, water surface PLC control system 1 can preserve the information of admission, and analyze it
Processing, if the temperature of admission, pressure, the data of flow, not in normal range (NR), system is automatically reminded to fault warning, and carries out
Reason is analyzed, corresponding instruction is generated, passes to subsea control modules 3 through umbilical cables, carried out accordingly by subsea control modules 3
Operation.
Annulus master valve 7 and annulus wing valve 8 form annular space control valve.
Surface control station 2 constitutes control dual system with water surface PLC control system 1, when event occurs in horizontal PLC control system
During barrier, surface control station 2 still is able to control subsea production system, improves security performance.
As shown in figure 3, water surface PLC control system 1 mainly includes 5 parts, including：Production system, data processing, instrument are moved
State monitoring, flow control, signal transmission.Production system includes normal production procedure, above repaiies flow, work flow and answers torrent
Journey.It is connected each other between each module, is an entirety.
As shown in figure 4, the flow chart for normal production procedure, intelligent flow is as follows：
(1) it first checks for the state of valve and equipment, in the case of equal normal operation just in next step, otherwise just examines
It repaiies.
(2) whether the pressure of detection production tree and temperature in normal range (NR), if production pressure, temperature not normal range (NR) it
Interior, system automatic alarm, water surface PLC control system 1 carries out the analysis of causes to failure, and when building the pressure, annular space control valve is opened,
The annular space pipeline for being connected to the water surface is made to be connected with annular space and carries out pressure release, then whether detection produces pressure, temperature just again again
Within the scope of often.Until pressure and temp is normal, then enter in next step；
(3) production channel regulating valve 14, paraffin remover injection valve 13, methanol injection valve 11 and antisludging agent injection are opened successively
Valve；
(4) production main valve 5 is opened, the discharge capacity of production tree is detected, when in normal range (NR), system is not warned
Report, PLC control system is analyzed and processed, and sends out command signal, to the adjustment that the aperture of oil nozzle is adapted to, until discharge capacity
In normal range (NR), carry out in next step；
(5) according to the size of subsea tree discharge capacity, the aperture of paraffin remover injection valve 13, methanol injection valve 11 are set successively
Aperture and preservative injection valve 12 aperture, system is made normally to be produced；
(6) temperature, pressure are detected again whether within the scope of normal, if production pressure, temperature be not in normal range (NR)
Within, system automatic alarm, water surface PLC control system 1 carries out failure reason and sends out adjust instruction and be adjusted operation, so
Whether detection failure releases afterwards, then detects pressure, temperature again again whether within normal range (NR).If failure cannot release,
It then needs to stop producing, carries out the detailed detection of failure.When detecting the temperature produced, pressure when within the scope of normal, then
It carries out in next step；
(7) system is during normal production, and whether monitoring discharge capacity, temperature, pressure are normal in real time, until monitoring process
Middle failure cannot exclude or produce to terminate, the operation terminated；
(8) production main valve 5 is first shut off, then closes other valves successively.
As shown in figure 5, the flow chart above to repair flow, intelligent flow is as follows：
(1) termination of pumping first；
(2) production main valve 5 is then switched off, production channel regulating valve 14, well workover valve 9, switching valve 10 open Annulus master valve 7
And annulus wing valve 8, annular space is made to connect progress pressure release with being connected to the annular space pipeline of the water surface；
(3) until water surface well head does not have discharge capacity, illustrate that pressure leak process terminates, then carry out workover treatment；
(4) tree cap is taken out first, and blanking plug carries out the connection of related tubing string and kit；
(5) annulus wing valve 8 is closed, well workover valve 9, Annulus master valve 7 is opened, carries out relevant workover treatment；
(6) during well workover, using the inductor of underground, the positioning of equipment is carried out, when well workover terminates, valve need to be carried out
Door position and the confirmation of valve state, equipment is all intact, then well workover terminates.
As shown in fig. 6, the flow chart for work flow, intelligent flow is as follows：
(1) work flow includes three kinds of wax removal, water filling and gas injection work flows；
(2) paraffin remover is injected pipeline to electric-hydraulic combined through device by wax removal flow along chemical agent, electric-hydraulic combined to run through
Device penetrates through production tree ontology and boll-weevil hanger, and paraffin remover enters oil pipe by production tree ontology and hanger, thus into
Row wax removal operates；
(3) water filling and gas injection flow are first turned on production main valve 5 and produce channel regulating valve 14, closing Annulus master valve 7,
Annulus wing valve 8, well workover valve 9 and switching valve 10 start injection pump and are injected into oil pipe along pipeline, be re-introduced among stratum.
As shown in fig. 7, the flow chart for flow of meeting an urgent need, intelligent flow is as follows：
(1) flow of meeting an urgent need mainly builds the pressure and suppresses pump, and closing storm valve is needed when building the pressure and suppress pump；
(2) a kind of mode can open switching valve 10, and connection should convert runner and carry out drain pressure release；
(3) another method is to open annular space control valve, annulus line line and annular space is connected, so as to carry out pressure release.
As shown in figure 8, the flow chart for data processing, intelligent flow is as follows：
Data processing is that the data of monitoring and data are carried out intelligent comparison analysis, when monitoring data are not in normal range (NR)
It is interior, adjust instruction is sent out by PLC control system, underground actuator is adjusted, and measuring instrument carries out data monitoring after adjustment
With acquisition, the data of acquisition are passed to ground PLC system along umbilical cables, are compared again with database, recycled with this past
It is multiple.
As shown in figure 9, the flow chart for instrument dynamic monitoring, intelligent flow is as follows：
Instrument dynamic monitoring is mainly monitored into trip temperature, pressure and each instrumented data with adopting using underwater sensor and instrument
Collection, the state of valve and the monitoring of position, the measurement of electric current, voltage carry out the adjusting of valve opening using actuator.
As shown in Figure 10, it is the flow chart of flow control, intelligent flow is as follows：
The control of flow is that flow is monitored first, and the adjusting of flow is carried out according to the condition of production, right after adjusting
The pressure of production channel is monitored, and when pressure rise easily causes the phenomenon that builds the pressure, need to be carried out pressure discharge operations, then be needed convection current again
Amount is monitored.When pressure normally then needs to carry out lasting monitoring to the pressure for producing channel.
As shown in figure 11, it is the flow chart of signal transmission, intelligent flow is as follows：
The transmission of signal is that PLC control system sends out electric signal and passes to subsea control modules 3 by umbilical cables, underwater to control
Signal is passed to underwater each actuator, the executive condition of underwater actuator and the signal warp of sensor by molding block 3 through cable
Cable, SCM, umbilical cables pass to water surface PLC control system.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, though
So the present invention is disclosed above with preferred embodiment, however is not limited to the present invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, technical spirit according to the present invention
To any simple modification, equivalent change and modification that above example is made, the range of technical solution of the present invention is still fallen within
It is interior.
Claims (4)
- A kind of 1. subsea production tree intelligent control method, which is characterized in that subsea production tree intelligent control used by this method Including water surface master station, umbilical cables, subsea control modules, subsea production tree, underground is equipped on the subsea production tree for system Safety valve, production main valve, production flutter valve, Annulus master valve, annulus wing valve, well workover valve, switching valve, methanol injection valve, preservative note Enter valve, paraffin remover injection valve, production channel regulating valve, and equipped with sensor device；Water surface master station include surface control station and Water surface PLC control system, water surface PLC control system connection surface control station, surface control station connection subsea control modules, under water Control module connects storm valve, production main valve, production flutter valve, Annulus master valve, ring respectively by the actuator of inside setting Hollow wing valve, well workover valve, switching valve, methanol injection valve, preservative injection valve, paraffin remover injection valve, production channel regulating valve；Pass through Sensor device on production tree returns the flow of subsea production tree, the state of oil nozzle and aperture, major loop, annular space Road, the valve of chemical agent infusion circuit, temperature, the data of pressure are monitored；Water surface PLC control system is to the data of monitoring Admission, the analysis of data are carried out, whether normal, then send out corresponding control instruction and transmitted through umbilical cables if monitoring each data in real time To subsea control modules, operation storm valve, production main valve, production flutter valve, Annulus master valve, ring are controlled by subsea control modules Hollow wing valve, well workover valve, switching valve, methanol injection valve, preservative injection valve, paraffin remover injection valve, production channel regulating valve；Based on the control method of this subsea production tree intelligence control system, content is as follows：Production tree intelligent control method be by Water surface PLC control system assigns instruction to surface control station, and then operates subsea control modules to complete, water surface PLC controls system The control method of system mainly includes 5 parts：Production system, data processing, instrument dynamic monitoring, flow control, signal transmission；Production system includes normal production procedure, above repaiies flow, work flow and emergent flow；The normal production procedure step is as follows：Whether pressure, the temperature of detection production and annular space are normal；The regulating valve of major loop, paraffin valve are opened, methanol injection valve is prevented Rotten agent injection valve produces main valve；Production oil nozzle is opened, starts paraffin remover injection device, methanol dosing system, preservative injection dress It puts, and sets the aperture of paraffin remover injection valve, methanol injection valve and preservative injection valve；The monitoring life in real time during production Production and annular space temperature, pressure it is whether normal, when abnormal and failure cannot exclude or produce stopping, pressing stopping by Button terminates to produce, and closes each injection device and each valve successively；It is as follows that process step is repaiied on described：Whether network analysis needs well workover, presses well workover button, stops production, will produce main valve, produces flutter valve, annulus wing valve, Switching valve is closed, and Annulus master valve and well workover valve are opened, workover rig is allow to be connected with the annular space of production tree, so as to be repaiied Well；The workflow steps are as follows：Work flow includes three kinds of wax removal, water filling and gas injection work flows；Wax removal flow is to inject paraffin remover along chemical agent What is set on pipeline to production tree is electric-hydraulic combined through device, it is electric-hydraulic combined will be on production tree ontology and production tree through device Boll-weevil hanger penetrates through, and paraffin remover enters oil pipe by production tree ontology and hanger, so as to carry out wax removal operation；Water filling and note Air-flow journey is to open production main valve and production channel regulating valve, closes Annulus master valve, annulus wing valve, well workover valve and switching valve, opens Dynamic injection pump is injected into along pipeline in oil pipe, is re-introduced among stratum；The emergent flow includes：The data of monitoring are monitored in real time, it is more than dangerous values such as to encounter monitoring numerical value, there is a situation where building the pressure, suppressing pump, and Failure is adjusted, then closes storm valve, cut-out production runner；Switching valve is opened to carry out pressure release or open Annulus master valve and ring Hollow wing valve carries out pressure release, stops pressure release after pressure recovery to regime values.
- A kind of 2. subsea production tree intelligent control method according to claim 1, which is characterized in that flow chart of data processing packet It includes：Data processing is that the data of monitoring and data are carried out intelligent comparison analysis, when monitoring data are not in normal range (NR), by PLC control system sends out adjust instruction, and underground actuator is adjusted, and measuring instrument carries out data monitoring with adopting after adjustment Collection, the data of acquisition are passed to ground PLC system along umbilical cables, are compared with database, moved in circles with this again.
- A kind of 3. subsea production tree intelligent control method according to claim 1, which is characterized in that instrument dynamic monitoring stream Journey includes：Instrument dynamic monitoring is mainly monitored and acquired into trip temperature, pressure and each instrumented data using underwater sensor and instrument, The state of valve and the monitoring of position, the measurement of electric current, voltage carry out the adjusting of valve opening using actuator.
- A kind of 4. subsea production tree intelligent control method according to claim 1, which is characterized in that flow control flow packet It includes：The control of flow is that flow is monitored first, and the adjusting of flow is carried out according to the condition of production, to production after adjusting The pressure of channel is monitored, and when pressure rise easily causes the phenomenon that builds the pressure, need to carry out pressure discharge operations, then need again to flow into Row monitoring；When pressure normally then needs to carry out lasting monitoring to the pressure for producing channel.
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| CN113791558A (en) * | 2021-05-10 | 2021-12-14 | 中国海洋石油集团有限公司 | Intelligent Christmas tree circuit adopting embedded system |
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| CN116025311B (en) * | 2022-11-16 | 2024-05-28 | 西南石油大学 | Underwater full-electric control landing pipe column system and method |
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| EP1075584B1 (en) * | 1998-03-30 | 2009-10-14 | Kellogg Brown & Root, Inc. | Extended reach tie-back system |
| US7921919B2 (en) * | 2007-04-24 | 2011-04-12 | Horton Technologies, Llc | Subsea well control system and method |
| CN105021382B (en) * | 2014-06-06 | 2017-11-21 | 中国海洋石油总公司 | Subsea production tree hydraulic valve performance on-line monitoring and diagnostic system and method |
| CN105634819B (en) * | 2016-01-11 | 2017-04-05 | 中国石油大学(华东) | Subsea production tree intellectual monitoring and dynamic fault diagnosis system |
| CN205862201U (en) * | 2016-07-20 | 2017-01-04 | 西南石油大学 | A kind of subsea production tree intelligent control system |
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