技术领域technical field
本实用新型涉及一种水下采油树控制系统，属于海洋石油机械装备领域。The utility model relates to an underwater Christmas tree control system, which belongs to the field of offshore oil machinery equipment.
背景技术Background technique
水下生产控制系统对生产过程中油气的安全平稳流动和提高开采起着至关重要的作用，随着海洋油气开采从浅海向深海发展，海洋油气开采的控制要求也随之提高，从目前的半自动控制全面转向数字化自动控制方向发展。水下生产控制系统主要采用液压控制系统，包括全液压系统、复合电液系统。目前深海最常用的控制系统为复合电液控制系统，它通过水面主控站与水下控制模块(SCM)进行通信，SCM接收主控站的命令对采油树上的各类阀门进行开关控制以及对生产油嘴进行开度控制，同时监测水下采油树上的传感器的信号，将信号传递给水面主控站，当出现故障时，其只能发出警报，不能自动控制，因此其具有单向控制，数字化程度低的缺点。The underwater production control system plays a vital role in the safe and stable flow of oil and gas in the production process and improves the recovery. With the development of offshore oil and gas production from shallow sea to deep sea, the control requirements for offshore oil and gas production have also increased. From the current Semi-automatic control is fully turned to the direction of digital automatic control. The underwater production control system mainly adopts hydraulic control system, including full hydraulic system and composite electro-hydraulic system. At present, the most commonly used control system in deep sea is the composite electro-hydraulic control system, which communicates with the subsea control module (SCM) through the main control station on the surface, and the SCM receives the commands from the main control station to switch and control various valves on the Christmas tree. Control the opening of the production choke, monitor the signal of the sensor on the subsea oil tree at the same time, and transmit the signal to the main control station on the water surface. When a fault occurs, it can only issue an alarm and cannot automatically control, so it has a one-way control , the disadvantage of low degree of digitization.
针对上述问题，国内外有学者进行过相关研究，并取得一定成果，如哈尔滨工程大学的王俊民的《测试用水下采油树控制模块研制》、中国石油大学的朱高磊等人的《测试用水下采油树控制模块研制》，但上述学术成果依然未能全面的解决上述问题，尤其是在安全保障及自动化方面，还存在不足。In response to the above problems, some scholars at home and abroad have carried out relevant research and achieved certain results, such as "Development of Control Module for Subsea Oil Production with Test Water" by Wang Junmin of Harbin Engineering University, and "Subsea Oil Production with Test Water" by Zhu Gaolei of China University of Petroleum. Tree Control Module Development", but the above academic achievements still fail to fully solve the above problems, especially in terms of security and automation, there are still deficiencies.
实用新型内容Utility model content
针对现有水下采油树控制系统存在的问题，本实用新型提出了一种水下采油树智能控制方法，对水下控制模块进行了控制程序的设计开发，从而实现通过增设基于PLC的水面分析执行处理模块，以实现自动制动采油树各阀门开启和关闭；自动调节生产油嘴，以控制流量的大小；综合利用监测的水下采油树生产压力、生产温度、环空压力、油气泄露监测、采油树阀门位置、油嘴位置、油嘴压差、井下环境数据，自动识别油田开发运行的安全情况，并进行相应的调节。Aiming at the problems existing in the existing subsea tree control system, the utility model proposes an intelligent control method for the subsea tree, and designs and develops the control program for the subsea control module, so as to realize the water surface analysis based on PLC Execute the processing module to automatically brake the opening and closing of each valve of the Christmas tree; automatically adjust the production nozzle to control the flow rate; comprehensively utilize the monitored production pressure, production temperature, annular pressure, oil and gas leakage monitoring, The position of the Christmas tree valve, the position of the choke, the pressure difference of the choke, and the downhole environment data can automatically identify the safety situation of the oilfield development and operation, and make corresponding adjustments.
本实用新型提出以下技术方案：The utility model proposes the following technical solutions:
一种水下采油树智能控制系统，包括水面主控站、脐带缆、水下控制模块(SCM)、水下采油树；所述水下采油树上安装有井下安全阀、生产主阀、生产翼阀、环空主阀、环空翼阀、修井阀、转换阀、甲醇注入阀、防腐剂注入阀、清蜡剂注入阀、生产通道调节阀，并设有传感器装置；所述的主控制站包括水面控制站及水面PLC控制系统；水面主控站包括水面控制站和水面PLC控制系统，水面PLC控制系统连接水面控制站，水面控制站连接水下控制模块，水下控制模块通过内部设置的执行器分别连接井下安全阀、生产主阀、生产翼阀、环空主阀、环空翼阀、修井阀、转换阀、甲醇注入阀、防腐剂注入阀、清蜡剂注入阀、生产通道调节阀；通过安装在采油树上的传感器装置对水下采油树的流量、油嘴的状态和开度、主回路、环空回路、化学药剂注入回路的阀门、温度、压力的数据进行监测；水面PLC控制系统对监测的数据进行数据的录取、分析，实时监测各数据是否正常，然后发出相应的控制指令经脐带缆传递到水下控制模块(SCM)，由水下控制模块控制操作井下安全阀、生产主阀、生产翼阀、环空主阀、环空翼阀、修井阀、转换阀、甲醇注入阀、防腐剂注入阀、清蜡剂注入阀、生产通道调节阀。An intelligent control system for an underwater Christmas tree, comprising a surface main control station, an umbilical cable, a subsea control module (SCM), and an underwater Christmas tree; the underwater Christmas tree is equipped with a downhole safety valve, a production main valve, a production Wing valve, annular main valve, annular wing valve, workover valve, conversion valve, methanol injection valve, preservative injection valve, wax remover injection valve, production channel regulating valve, and sensor device; The control station includes the water surface control station and the water surface PLC control system; the water surface master control station includes the water surface control station and the water surface PLC control system, the water surface PLC control system is connected to the water surface control station, the water surface control station is connected to the underwater control module, and the underwater control module The set actuators are respectively connected to the downhole safety valve, production main valve, production wing valve, annulus main valve, annulus wing valve, workover valve, diverter valve, methanol injection valve, preservative injection valve, wax remover injection valve, Production channel regulating valve; through the sensor device installed on the Christmas tree, the flow rate of the underwater Christmas tree, the state and opening of the nozzle, the main circuit, the annular circuit, the valves, temperature and pressure data of the chemical agent injection circuit are monitored The surface PLC control system records and analyzes the monitored data, monitors whether the data is normal in real time, and then sends corresponding control instructions to the subsea control module (SCM) through the umbilical cable, and the subsea control module controls the operation of the underground Safety valve, production main valve, production wing valve, annular main valve, annular wing valve, workover valve, transfer valve, methanol injection valve, preservative injection valve, paraffin remover injection valve, production channel regulating valve.
所述采油树智能化控制由水面PLC控制系统向水面控制站下达指令，进而操作水下控制模块来完成，水面PLC控制系统的控制方法主要包括5部分：生产系统，数据处理，仪表动态监测、流量控制、信号传输；生产系统包括正常生产流程，上修流程，作业流程及应急流程。The intelligent control of the Christmas tree is completed by the water surface PLC control system issuing instructions to the water surface control station, and then operating the underwater control module. The control method of the 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 process, revision process, operation process and emergency process.
本实用新型的优点在于：The utility model has the advantages of:
1、新增的水面PLC控制系统，以此实现自动制动采油树各阀门开启和关闭，自动调节生产油嘴，以控制流量的大小；1. The newly added water surface PLC control system realizes the automatic braking of opening and closing of each valve of the Christmas tree, and automatically adjusts the production nozzle to control the flow rate;
2、各阀门之间的位置安放排布符合水下采油树的设计要求，便于通过脐带缆连接新增的水面PLC控制系统。2. The location and arrangement of the valves meet the design requirements of the subsea oil tree, and it is convenient to connect the newly added surface PLC control system through the umbilical cable.
附图说明Description of drawings
图1是本实用新型的系统结构示意图；Fig. 1 is a schematic diagram of the system structure of the present utility model;
图2是本实用新型的控制关系图；Fig. 2 is the control diagram of the utility model;
图3是本实用新型的水面PLC控制系统的功能图；Fig. 3 is the functional diagram of the water surface PLC control system of the present utility model;
图4是本实用新型的正常生产系统的流程图；Fig. 4 is the flow chart of the normal production system of the present utility model;
图5是本实用新型的上修流程图；Fig. 5 is the upper modification flowchart of the utility model;
图6是本实用新型的作业流程图；Fig. 6 is the operation flowchart of the present utility model;
图7是本实用新型的应急流程图；Fig. 7 is the emergency flowchart of the present utility model;
图8是本实用新型的数据处理流程图；Fig. 8 is the data processing flowchart of the present utility model;
图9是本实用新型的仪表动态监测流程图；Fig. 9 is the instrument dynamic monitoring flowchart of the present utility model;
图10是本实用新型的流量控制流程图；Fig. 10 is the flow control flowchart of the utility model;
图11是本实用新型的信号传输流程图。Fig. 11 is a flow chart of signal transmission of the present invention.
图中，1、水面PLC控制系统，2、水面控制站，3、水下控制模块，4、井下安全阀，5、生产主阀，6、生产翼阀，7、环空主阀，8、环空翼阀，9、修井阀，10、转换阀，11、甲醇注入阀，12、防腐剂注入阀，13、清蜡剂注入阀，14、生产通道调节阀。In the figure, 1. Surface PLC control system, 2. Surface control station, 3. Underwater control module, 4. Downhole safety valve, 5. Production main valve, 6. Production wing valve, 7. Annulus main valve, 8. Annular wing valve, 9. Workover valve, 10. Changeover valve, 11. Methanol injection valve, 12. Preservative injection valve, 13. Wax remover injection valve, 14. Production channel regulating valve.
具体实施方式detailed description
下面结合附图中的实施例对本实用新型作进一步的详细说明，但并不构成对本实用新型的任何限制。The utility model will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but it does not constitute any limitation to the utility model.
在复合电液控制系统的基础之上，结合采油树结构设计提出了一种全新的设计思路的水下采油树智能化控制系统及其控制方法。On the basis of the composite electro-hydraulic control system, combined with the structural design of the Christmas tree, a new design idea of the intelligent control system and control method of the underwater Christmas tree is proposed.
如图1和图2所示，水面控制站2将液压经脐带缆传递给水下控制模块3，水下控制模块3主要具有两种功能，一种是控制功能，水下生产设施上的各个阀门通过电液混合控制方式来控制，如对于海底采油树的井下安全阀4、生产主阀5、生产翼阀6、环空主阀7、环空翼阀8、转换阀10、各化学药剂注入阀等的打开与关闭进行控制；根据油田实际的开采状况，调节油嘴的开度，对流量进行调控；以及控制甲醇、阻垢剂及清蜡剂等化学药剂加注的控制及相关阀门的开闭；对于修井控制是通过将生产主阀5，生产翼阀6，环空翼阀8，转换阀10关闭，将环空主阀7和修井阀9打开，使修井设备可以与采油树的环空连通来实现。另一种为监测功能，其通过安装在水下采油树上的传感器装置对流量、温度、压力、阀门的状态、阀门的开度、阀门的位置、油气泄露、海底环境进行监测。水下控制模块3将监测的信息经脐带缆传递给水面PLC控制系统1，水面PLC控制系统1能够对录取的信息进行保存，并对其进行分析处理，如果录取的温度、压力、流量的数据不在正常范围内，系统自动提醒故障警报，并进行分析原因，生成相应的指令，经脐带缆传递给水下控制模块3，由水下控制模块3进行相应的操作。As shown in Figures 1 and 2, the surface control station 2 transmits the hydraulic pressure to the underwater control module 3 through the umbilical cable. The underwater control module 3 mainly has two functions, one is the control function, and each valve on the underwater production facility It is controlled by electro-hydraulic hybrid control mode, such as downhole safety valve 4, production main valve 5, production wing valve 6, annular main valve 7, annular wing valve 8, conversion valve 10, and injection of various chemicals for the subsea oil tree. Control the opening and closing of valves, etc.; adjust the opening of the oil nozzle and control the flow according to the actual production conditions of the oil field; and control the filling of methanol, scale inhibitors, wax removers and other chemicals and the opening of related valves For the workover control, the production main valve 5, the production wing valve 6, the annular space wing valve 8 and the switching valve 10 are closed, and the annular space main valve 7 and the well workover valve 9 are opened, so that the well workover equipment can be connected with the oil production The annulus connectivity of the tree is realized. The other is the monitoring function, which monitors the flow, temperature, pressure, valve status, valve opening, valve position, oil and gas leakage, and seabed environment through the sensor device installed on the underwater oil tree. The underwater control module 3 transmits the monitored information to the surface PLC control system 1 via the umbilical cable, and the surface PLC control system 1 can save the recorded information and analyze and process it. If the recorded data of temperature, pressure and flow If it is not within the normal range, the system will automatically remind the fault alarm, analyze the cause, generate corresponding instructions, and transmit them to the underwater control module 3 through the umbilical cable, and the underwater control module 3 will perform corresponding operations.
环空主阀7和环空翼阀8组成环空控制阀。The annular space main valve 7 and the annular space wing valve 8 form the annular space control valve.
水面控制站2与水面PLC控制系统1构成了控制双系统，当水平PLC控制系统出现故障时，水面控制站2仍能够对水下生产系统进行控制，提高了安全性能。The water surface control station 2 and the water surface PLC control system 1 constitute a dual control system. When the horizontal PLC control system fails, the water surface control station 2 can still control the underwater production system, which improves the safety performance.
如图3所示，水面PLC控制系统1主要包括5部分，包括：生产系统，数据处理，仪表动态监测、流量控制、信号传输。生产系统包括正常生产流程，上修流程，作业流程及应急流程。各模块之间相互联系，为一个整体。As shown in Figure 3, the water surface PLC control system 1 mainly includes 5 parts, including: production system, data processing, instrument dynamic monitoring, flow control, and signal transmission. The production system includes normal production process, revision process, operation process and emergency process. The modules are interconnected and form a whole.
如图4所示，为正常生产流程的流程图，其智能化流程如下：As shown in Figure 4, it is a flowchart of the normal production process, and its intelligent process is as follows:
(1)首先检查阀门及设备的状态，均运行正常的情况下就行下一步，否则就行检修。(1) First check the status of valves and equipment, and if they are in normal operation, go to the next step, otherwise go to maintenance.
(2)检测采油树的压力及温度是否在正常范围，若生产压力、温度不在正常范围之内，系统自动报警，水面PLC控制系统1对故障进行原因分析，当憋压时，将环空控制阀打开，使连接到水面的环空管线与环空连通进行泄压，然后再重新检测生产压力、温度是否在正常范围之内。直到压力温度正常，则进入下一步；(2) Detect whether the pressure and temperature of the Christmas tree are within the normal range. If the production pressure and temperature are not within the normal range, the system will automatically alarm, and the water surface PLC control system 1 will analyze the cause of the fault. The valve is opened to allow the annulus pipeline connected to the water surface to communicate with the annulus for pressure relief, and then retest whether the production pressure and temperature are within the normal range. Until the pressure and temperature are normal, enter the next step;
(3)依次打开生产通道调节阀14，清蜡剂注入阀13，甲醇注入阀11及阻垢剂注入阀；(3) Open the production channel regulating valve 14, wax remover injection valve 13, methanol injection valve 11 and antiscalant injection valve in sequence;
(4)打开生产主阀5，对采油树的排量进行检测，当不在正常范围内，系统进行警报，PLC控制系统进行分析处理，并发出指令信号，对油嘴的开度进行适应的调整，直到排量在正常范围内，进行下一步；(4) Open the production main valve 5 to detect the displacement of the Christmas tree. When it is not within the normal range, the system will give an alarm, the PLC control system will analyze and process, and send a command signal to adjust the opening of the oil nozzle. Until the displacement is within the normal range, proceed to the next step;
(5)根据海底采油树排量的大小，依次设定清蜡剂注入阀13的开度，甲醇注入阀11的开度及防腐剂注入阀12的开度，使系统进行正常的生产；(5) according to the size of the subsea oil tree displacement, set the opening degree of wax remover injection valve 13 successively, the opening degree of methanol injection valve 11 and the opening degree of preservative injection valve 12, make system carry out normal production;
(6)再次检测温度、压力是否在正常的范围之内，若生产压力、温度不在正常范围之内，系统自动报警，水面PLC控制系统1对故障进行原因并发出调整指令进行调整操作，然后检测故障是否解除，接着再重新检测压力、温度是否在正常范围之内。若故障不能解除，则需要停止生产，进行故障的详细检测。当检测生产的温度、压力在正常的范围之内时，则进行下一步；(6) Check whether the temperature and pressure are within the normal range again. If the production pressure and temperature are not within the normal range, the system will automatically alarm, and the water surface PLC control system 1 will analyze the cause of the fault and issue an adjustment command to perform adjustment operations, and then detect Check whether the fault is resolved, and then re-check whether the pressure and temperature are within the normal range. If the fault cannot be eliminated, it is necessary to stop production and carry out detailed detection of the fault. When the temperature and pressure of the detection production are within the normal range, proceed to the next step;
(7)系统在正常生产的过程中，实时监测排量、温度、压力是否正常，直到监测过程中故障不能排除或者生产结束，进行结束的操作；(7) During the normal production process, the system monitors whether the displacement, temperature, and pressure are normal in real time, until the fault cannot be eliminated during the monitoring process or the production is over, and the end operation is carried out;
(8)首先关闭生产主阀5，接着依次关闭其他阀门。(8) First close the production main valve 5, and then close other valves in turn.
如图5所示，为上修流程的流程图，其智能化流程如下：As shown in Figure 5, it is a flow chart of the revision process, and its intelligent process is as follows:
(1)首先停泵；(1) Stop the pump first;
(2)接着关闭生产主阀5，生产通道调节阀14、修井阀9、转换阀10，打开环空主阀7及环空翼阀8，使环空与连接到水面的环空管线连通进行泄压；(2) Then close the production main valve 5, the production channel regulating valve 14, the workover valve 9, and the transfer valve 10, and open the annulus main valve 7 and the annulus wing valve 8 to make the annulus communicate with the annulus pipeline connected to the water surface to relieve pressure;
(3)直到水面井口没有排量，说明泄压过程结束，接着进行修井作业；(3) Until there is no displacement at the wellhead on the water surface, it means that the pressure relief process is over, and then the workover operation is carried out;
(4)首先取出采油树帽，堵塞器，进行相关管柱及配套工具的连接；(4) First take out the Christmas tree cap and the plug, and connect relevant pipe strings and supporting tools;
(5)关闭环空翼阀8，打开修井阀9、环空主阀7，进行相关的修井作业；(5) Close the annulus wing valve 8, open the workover valve 9 and the annulus main valve 7, and carry out relevant workover operations;
(6)修井的过程中，可利用井下的感应器，进行设备的定位，当修井结束，需进行阀门位置及阀门状态的确认，设备全部完好，则修井结束。(6) During the workover process, the downhole sensors can be used to locate the equipment. When the workover is completed, the valve position and valve status need to be confirmed. If all the equipment is in good condition, the workover will be completed.
如图6所示，为作业流程的流程图，其智能化流程如下：As shown in Figure 6, it is a flowchart of the operation process, and its intelligent process is as follows:
(1)作业流程包括清蜡、注水和注气三种作业流程；(1) The operation process includes three operation processes of wax removal, water injection and gas injection;
(2)清蜡流程，将清蜡剂沿着化学剂注入管线到电液复合贯穿装置，电液复合贯穿装置将采油树本体及油管悬挂器贯通，清蜡剂通过采油树本体及悬挂器进入油管，从而进行清蜡操作；(2) Wax removal process: inject the wax remover along the chemical agent into the pipeline to the electro-hydraulic composite penetration device, and the electro-hydraulic composite penetration device connects the tree body and the tubing hanger, and the wax remover enters through the tree body and the hanger Oil pipe, so as to carry out wax removal operation;
(3)注水和注气流程，首先打开生产主阀5及生产通道调节阀14，关闭环空主阀7、环空翼阀8、修井阀9及转换阀10，启动注入泵沿着管线注入到油管中，再注入到地层之中。(3) In the process of water injection and gas injection, firstly open the production main valve 5 and the production channel regulating valve 14, close the annular main valve 7, annular wing valve 8, workover valve 9 and transfer valve 10, start the injection pump along the pipeline Injected into the oil pipe, and then injected into the formation.
如图7所示，为应急流程的流程图，其智能化流程如下：As shown in Figure 7, it is a flowchart of the emergency process, and its intelligent process is as follows:
(1)应急流程主要是憋压和憋泵，当发生憋压和憋泵时需要关闭井下安全阀；(1) The emergency process is mainly to suppress the pressure and the pump. When the pressure and the pump occur, it is necessary to close the downhole safety valve;
(2)一种方式可以打开转换阀10，连通应转换流道进行排液泄压；(2) One way is to open the switching valve 10 to communicate with the switching channel for liquid discharge and pressure relief;
(3)另一种方法是打开环空控制阀，连通环空管线与环空，从而进行泄压。(3) Another method is to open the annulus control valve and connect the annulus pipeline with the annulus to relieve pressure.
如图8所示，为数据处理的流程图，其智能化流程如下：As shown in Figure 8, it is a flowchart of data processing, and its intelligent process is as follows:
数据处理是将监测的数据与数据进行智能对比分析，当监测数据不在正常范围内，由PLC控制系统发出调整指令，井下执行器进行调整，调整之后监测仪表进行数据监测与采集，采集的数据沿着脐带缆传递给地面PLC系统，再次与数据库进行对比，以此循环往复。Data processing is to intelligently compare and analyze the monitored data and data. When the monitored data is not within the normal range, the PLC control system will issue an adjustment command, and the downhole actuator will be adjusted. After the adjustment, the monitoring instrument will monitor and collect data. The umbilical cable is passed to the ground PLC system, which is compared with the database again, and the cycle repeats.
如图9所示，为仪表动态监测的流程图，其智能化流程如下：As shown in Figure 9, it is a flowchart of instrument dynamic monitoring, and its intelligent process is as follows:
仪表动态监测主要利用水下传感器及仪表进行温度、压力及各仪表数据监测与采集，阀门的状态及位置的监测，电流、电压的测量，利用执行器进行阀门开度的调节。Instrument dynamic monitoring mainly uses underwater sensors and instruments to monitor and collect temperature, pressure and instrument data, monitor valve status and position, measure current and voltage, and use actuators to adjust valve opening.
如图10所示，为流量控制的流程图，其智能化流程如下：As shown in Figure 10, it is a flowchart of flow control, and its intelligent process is as follows:
流量的控制，首先是对流量进行监测，根据生产情况进行流量的调节，调节之后对生产通道的压力进行监测，当压力升高易造成憋压现象，需进行泄压操作，接着需再次对流量进行监测。当压力正常则需对生产通道的压力进行持续的监测。The control of the flow rate is to monitor the flow rate first, and adjust the flow rate according to the production situation. After the adjustment, the pressure of the production channel is monitored. When the pressure rises, it is easy to cause a pressure phenomenon, and the pressure relief operation is required, and then the flow rate needs to be adjusted again. Monitor. When the pressure is normal, it is necessary to continuously monitor the pressure of the production channel.
如图11所示，为信号传输的流程图，其智能化流程如下：As shown in Figure 11, it is a flowchart of signal transmission, and its intelligent process is as follows:
信号的传递是PLC控制系统发出电信号通过脐带缆传递给水下控制模块3，水下控制模块3将信号经电缆传递给水下各执行器，水下的执行器的执行情况及传感器的信号经电缆，SCM，脐带缆传递给水面PLC控制系统。The transmission of the signal is that the PLC control system sends an electrical signal to the underwater control module 3 through the umbilical cable, and the underwater control module 3 transmits the signal to the underwater actuators through the cable, and the execution of the underwater actuator and the signal of the sensor pass through the cable. , SCM, and the umbilical cable are passed to the surface PLC control system.
以上所述，仅是本实用新型的较佳实施例而已，并非对本实用新型作任何形式上的限制，虽然本实用新型已以较佳实施例揭露如上，然而并非用以限定本实用新型，任何熟悉本专业的技术人员，在不脱离本实用新型技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本实用新型技术方案的内容，依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本实用新型技术方案的范围内。The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.
| Application Number | Priority Date | Filing Date | Title |
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| CN201620768422.8UCN205862201U (en) | 2016-07-20 | 2016-07-20 | A kind of subsea production tree intelligent control system |
| Application Number | Priority Date | Filing Date | Title |
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| CN201620768422.8UCN205862201U (en) | 2016-07-20 | 2016-07-20 | A kind of subsea production tree intelligent control system |
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| CN201620768422.8UExpired - Fee RelatedCN205862201U (en) | 2016-07-20 | 2016-07-20 | A kind of subsea production tree intelligent control system |
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| CN106020102A (en)* | 2016-07-20 | 2016-10-12 | 西南石油大学 | Smart control system for subsea tree and control method thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106020102A (en)* | 2016-07-20 | 2016-10-12 | 西南石油大学 | Smart control system for subsea tree and control method thereof |
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