CN110410676A - An unattended intelligent oil and gas mixed transportation system - Google Patents
An unattended intelligent oil and gas mixed transportation system Download PDFInfo
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Abstract
本发明公开了一种无人值守智能油气混输系统，包括进料管道，进料管道上设置有防蜡除垢器，进料管道的末端连通至第一油气运输系统，第一油气运输系统包括运输管道、第一控制阀、过滤器、油气混输泵、单向阀和第二控制阀，出料管道上设置有电磁加热器。本发明针对低产液量、高气油比的站点，在满足站点应有功能的前提下，单井产油汇集后可在低温条件下通过油气混输泵并在电磁加热器的作用下直接外输，完全简化了中转站处理流程，优化了集输系统，弃用伴生气管网、热水循环管网，停用缓冲罐、加热炉，大幅降低站点运行风险，同时本油气混输系统可由PLC自动控制，可自动完成对油气的混输。
The invention discloses an unattended intelligent oil-gas mixed transportation system, which comprises a feed pipeline, on which a wax-proof descaling device is arranged, the end of the feed pipeline is connected to a first oil-gas transportation system, and the first oil-gas transportation system It includes a transportation pipeline, a first control valve, a filter, an oil-gas mixing pump, a one-way valve and a second control valve, and an electromagnetic heater is arranged on the discharge pipeline. The present invention is aimed at stations with low liquid production and high gas-oil ratio. Under the premise of satisfying the functions of the station, the oil produced by a single well can be directly exported by the oil-gas mixing pump under low temperature conditions and under the action of an electromagnetic heater. It completely simplifies the processing flow of the transfer station, optimizes the gathering and transportation system, abandons the associated gas pipe network, hot water circulation pipe network, and stops the buffer tank and heating furnace, which greatly reduces the operation risk of the station. At the same time, the oil and gas mixed transportation system can be controlled by PLC Automatic control can automatically complete the mixed transportation of oil and gas.
Description
技术领域technical field
本发明涉及油气混输领域，尤其涉及一种无人值守智能油气混输系统。The invention relates to the field of oil and gas mixed transportation, in particular to an unattended intelligent oil and gas mixed transportation system.
背景技术Background technique
为了对原油矿场采集的原油进行运输，就必须对其进行增压，然后通过压力管道将原油输送至炼油厂。而由于原油中含有大量的伴生气、水、沙子，使原油的运输并不是单纯的液体运输，而是液、气、固多相混合物的运输。In order to transport the crude oil collected in the crude oil mine, it must be pressurized, and then the crude oil is transported to the refinery through a pressure pipeline. Since crude oil contains a large amount of associated gas, water, and sand, the transportation of crude oil is not purely liquid transportation, but the transportation of liquid, gas, and solid multiphase mixtures.
目前，国内大多数油气混输系统多采用中转站或增压站采取单井产油汇集后进行加热、分离、增压，最后输送到压力管道中，其中伴生气经过压缩后通过伴生气管网向外输送，油料混合液则经过另一流程通过输油泵向外输送，此种油气混输系统要建立伴生气管网、油料输送管网、热水循环管网，缓冲罐和加热炉等，前期基础投资巨大，需要建立油料和伴生气两条外输管线，流程存处理环节多，锅炉加热热负荷大，而且油料运输至终端后还需进行油、气、固三项的分离处理才能供下个工序使用。At present, most oil and gas mixed transportation systems in China use transfer stations or pressurization stations to collect oil produced by single wells, heat, separate, pressurize, and finally transport them to pressure pipelines. The oil mixture is transported outside through another process through the oil pump. This kind of oil and gas mixed transportation system needs to establish associated gas pipeline network, oil pipeline network, hot water circulation pipeline network, buffer tank and heating furnace, etc., the preliminary foundation The investment is huge, and two pipelines for oil and associated gas need to be established. There are many storage and processing links in the process, and the heating load of the boiler is large. After the oil is transported to the terminal, it needs to be separated and processed for oil, gas, and solids before it can be used for the next generation. Process use.
发明内容Contents of the invention
本发明的目的是提供一种无人值守智能油气混输系统，解决现有的油气混输系统复杂、处理流程环节多，而且需要建立油料和伴生气两条外输管线的问题。The purpose of the present invention is to provide an unattended intelligent oil-gas mixed transportation system, which solves the problems that the existing oil-gas mixed transportation system is complicated, has many processing steps, and needs to establish two external pipelines for oil and associated gas.
为解决上述技术问题，本发明采用如下技术方案：In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:
本发明一种无人值守智能油气混输系统，包括进料管道，所述进料管道上设置有防蜡除垢器，所述进料管道的末端连通至第一油气运输系统；An unattended intelligent oil-gas mixed transportation system of the present invention includes a feed pipeline, on which a wax anti-scaling device is installed, and the end of the feed pipeline is connected to the first oil-gas transportation system;
所述第一油气运输系统包括与所述进料管道末端连通的运输管道，所述运输管道上按油气运输方向依次设置有第一控制阀、过滤器、油气混输泵、单向阀和第二控制阀，所述油气混输泵进、出料侧的所述运输管道上均设置有压力变送器和机械压力表，所述运输管道的末端连通至出料管道；The first oil and gas transportation system includes a transportation pipeline connected to the end of the feed pipeline, and the transportation pipeline is provided with a first control valve, a filter, an oil and gas mixed transportation pump, a one-way valve and a second Two control valves, pressure transmitters and mechanical pressure gauges are installed on the transportation pipelines on the inlet and outlet sides of the oil-gas mixed transportation pump, and the ends of the transportation pipelines are connected to the discharge pipeline;
所述出料管道上设置有电磁加热器。An electromagnetic heater is arranged on the discharge pipeline.
进一步的，所述进料管道按油气运输方向依次设置有进料控制阀和温度变送器，所述温度变送器位于所述防蜡除垢器的上游。Further, the feed pipeline is sequentially provided with a feed control valve and a temperature transmitter according to the direction of oil and gas transportation, and the temperature transmitter is located upstream of the wax-preventing and descaling device.
进一步的，所述第一油气运输系统还包括两条排污管道，两条所述排污管道分别与所述油气混输泵进、出料侧的所述运输管道连通，所述排污管道上设置有排污截止阀。Further, the first oil and gas transportation system also includes two sewage pipelines, the two sewage pipelines communicate with the transportation pipelines on the inlet and outlet sides of the oil-gas mixed transport pump respectively, and the sewage pipelines are provided with Sewage shut-off valve.
进一步的，还包括第二油气运输系统，所述第二油气运输系统与所述第一油气运输系统结构相同，并且所述第二油气运输系统与所述第一油气运输系统并联于所述进料管道和出料管道之间。Further, it also includes a second oil and gas transportation system, the second oil and gas transportation system has the same structure as the first oil and gas transportation system, and the second oil and gas transportation system is connected in parallel with the first oil and gas transportation system Between the feed pipe and the discharge pipe.
进一步的，所述出料管道上设置有出料控制阀，所述出料控制阀位于所述电磁加热器的上游。Further, the discharge pipeline is provided with a discharge control valve, and the discharge control valve is located upstream of the electromagnetic heater.
进一步的，所述进料管道上连通有进料应急泄压管道，所述进料应急泄压管道的起始端位于所述进料控制阀和温度变送器之间，所述进料应急泄压管道按油气泄压方向设置有进料应急安全阀；Further, the feed pipeline is connected with a feed emergency pressure relief pipeline, and the starting end of the feed emergency pressure relief pipeline is located between the feed control valve and the temperature transmitter. The pressure pipeline is equipped with a feeding emergency safety valve according to the direction of oil and gas pressure relief;
所述出料管道上连通有出料应急泄压管道，所述出料应急泄压管道的起始端位于所述电磁加热器的下游，所述出料应急泄压管道按油气泄压方向设置有出料应急安全阀；The discharge pipeline is connected with a discharge emergency pressure relief pipeline, the starting end of the discharge emergency pressure relief pipeline is located downstream of the electromagnetic heater, and the discharge emergency pressure relief pipeline is arranged according to the direction of oil and gas pressure relief. Outlet emergency safety valve;
所述进料应急泄压管道的末端与出料应急泄压管道的末端连通至总泄压管道，所述总泄压管道与应急储料罐的进料口连通，所述总泄压管道上设置有应急泄压截止阀；The end of the feed emergency pressure relief pipeline is connected to the main pressure relief pipeline with the end of the discharge emergency pressure relief pipeline, and the total pressure relief pipeline is connected to the feed port of the emergency storage tank. Equipped with an emergency pressure relief shut-off valve;
所述应急储料罐的出料口通过应急供料管道与所述进料管道连通，所述应急供料管道的末端位于所述温度变送器和防蜡除垢器之间，所述应急供料管道上设置有应急供料截止阀。The outlet of the emergency storage tank communicates with the feed pipeline through an emergency supply pipeline, and the end of the emergency supply pipeline is located between the temperature transmitter and the anti-wax descaling device. An emergency feed cut-off valve is provided on the feed pipeline.
进一步的，所述进料管道上连通有备用进料应急泄压管道，所述备用进料应急泄压管道的起始端位于所述防蜡除垢器的下游，所述备用进料应急泄压管道的末端与所述总泄压管道连通，所述备用进料应急泄压管道上设置有备用应急泄压电动阀。Further, the feed pipeline is connected with a standby feed emergency pressure relief pipeline, the starting end of the standby feed emergency pressure relief pipeline is located downstream of the wax-proof descaling device, and the standby feed emergency pressure relief pipeline is The end of the pipeline communicates with the general pressure relief pipeline, and a standby emergency pressure relief electric valve is arranged on the standby feed emergency pressure relief pipeline.
进一步的，还包括循环管道，所述循环管道与所述第二油气运输系统、第一油气运输系统并联于所述进料管道和出料管道之间，所述循环管道上设置有循环电动阀；Further, it also includes a circulation pipeline, the circulation pipeline is connected in parallel with the second oil-gas transportation system and the first oil-gas transportation system between the feed pipeline and the discharge pipeline, and a circulation electric valve is arranged on the circulation pipeline ;
所述过滤器上连通有备用过滤出料管，所述备用过滤出料管位于所述运输管道的下方并且连通至所述运输管道，所述备用过滤出料管上设置有备用过滤出料电动阀。The filter is connected with a spare filter discharge pipe, the spare filter discharge pipe is located below the transportation pipeline and connected to the transportation pipeline, the spare filter discharge pipe is provided with a spare filter discharge motor valve.
与现有技术相比，本发明的有益技术效果：Compared with prior art, beneficial technical effect of the present invention:
本发明针对低产液量、高气油比的站点，在满足站点应有功能的前提下，单井产油汇集后可在低温条件下通过油气混输泵并在电磁加热器的作用下直接外输，完全改变了传统的油气方式，去除了中间的油气分离工段，直接将油、气、水三相介质运输到终端进行分离，优化了集输系统，弃用伴生气管网、热水循环管网，停用缓冲罐、加热炉，大幅降低站点运行风险，该系统拥有两套相同的油气运输管路，保证正常情况下一启一备，同时本油气混输系统可由PLC自动控制，可自动完成对油气的混输及管道的高压预警处理。The present invention is aimed at stations with low liquid production and high gas-oil ratio. Under the premise of satisfying the functions of the station, after the oil production of a single well is collected, it can pass through the oil-gas mixed transport pump under low temperature conditions and directly flow out under the action of an electromagnetic heater. It completely changed the traditional way of oil and gas, removed the intermediate oil and gas separation section, directly transported the three-phase medium of oil, gas and water to the terminal for separation, optimized the gathering and transportation system, and abandoned the associated gas pipe network and hot water circulation pipe network, stop buffer tanks and heating furnaces, and greatly reduce the risk of site operation. The system has two sets of identical oil and gas transportation pipelines to ensure one start and one backup under normal conditions. At the same time, the oil and gas mixed transportation system can be automatically controlled by PLC, which can automatically Complete the mixed transportation of oil and gas and the high pressure early warning treatment of pipelines.
附图说明Description of drawings
下面结合附图说明对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings.
图1为本发明无人值守智能油气混输系统的示意图；Fig. 1 is the schematic diagram of the unattended intelligent oil-gas mixed transportation system of the present invention;
图2为本发明过滤器的安装连接示意图；Fig. 2 is the installation connection schematic diagram of filter of the present invention;
图3为本发明控制系统原理图。Fig. 3 is a schematic diagram of the control system of the present invention.
附图标记说明：1、进料管道；2、进料控制阀；3、温度变送器；4、防蜡除垢器；5、第一油气运输系统；501、运输管道；502、第一控制阀；503、过滤器；504、油气混输泵；505、单向阀；506、第二控制阀；507、压力变送器；508、机械压力表；6、出料管道；7、电磁加热器；8、排污管道；9、排污截止阀；10、第二油气运输系统；11、进料应急泄压管道；12、进料应急安全阀；13、出料应急泄压管道；14、出料应急安全阀；15、总泄压管道；16、应急储料罐；17、应急泄压截止阀；18、应急供料管道；19、应急供料截止阀；20、备用进料应急泄压管道；21、备用应急泄压电动阀；22、循环管道；23、循环电动阀；24、备用过滤出料管；25、备用过滤出料电动阀；26、出料控制阀。Explanation of reference signs: 1. Feed pipeline; 2. Feed control valve; 3. Temperature transmitter; 4. Anti-wax descaling device; 5. The first oil and gas transportation system; Control valve; 503, filter; 504, oil-gas mixing pump; 505, one-way valve; 506, second control valve; 507, pressure transmitter; 508, mechanical pressure gauge; 6, discharge pipeline; 7, electromagnetic Heater; 8. Sewage discharge pipeline; 9. Sewage discharge stop valve; 10. Second oil and gas transportation system; 11. Emergency pressure relief pipeline for feeding material; 12. Emergency safety valve for feeding material; 13. Emergency pressure relief pipeline for discharging material; 14. Outlet emergency safety valve; 15. General pressure relief pipeline; 16. Emergency storage tank; 17. Emergency pressure relief cut-off valve; 18. Emergency feed pipeline; 19. Emergency feed cut-off valve; 21. Backup emergency pressure relief electric valve; 22. Circulation pipeline; 23. Circulation electric valve; 24. Spare filter discharge pipe; 25. Spare filter discharge electric valve; 26. Discharge control valve.
具体实施方式Detailed ways
为了使本领域的技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
如图1至2所示，本实施例中公开了一种无人值守智能油气混输系统，包括进料管道1，进料管道1上按油气运输方向依次设置有进料控制阀2、温度变送器3和防蜡除垢器4，进料管道1的末端连通至第一油气运输系统5；第一油气运输系统5包括与进料管道1末端连通的运输管道501，运输管道501按油气运输方向依次设置有第一控制阀502、过滤器503、油气混输泵504、单向阀505和第二控制阀506，油气混输泵504进、出料侧的运输管道501上均设置有压力变送器507和机械压力表508，运输管道501的末端连通至出料管道6；出料管道6上设置有电磁加热器7。压力变送器507和机械压力表508在使用安装时需配合截止阀一起使用，以便于后期对其检修。As shown in Figures 1 to 2, an unattended intelligent oil-gas mixed transportation system is disclosed in this embodiment, which includes a feed pipeline 1, on which a feed control valve 2, a temperature Transmitter 3 and anti-wax descaling device 4, the end of feed pipeline 1 is communicated with the first oil-gas transportation system 5; The first control valve 502, the filter 503, the oil-gas mixing pump 504, the one-way valve 505 and the second control valve 506 are arranged in sequence in the direction of oil and gas transportation, and the transportation pipeline 501 on the inlet and outlet sides of the oil-gas mixing pump 504 is installed There is a pressure transmitter 507 and a mechanical pressure gauge 508, and the end of the transportation pipeline 501 is connected to the discharge pipeline 6; the discharge pipeline 6 is provided with an electromagnetic heater 7. The pressure transmitter 507 and the mechanical pressure gauge 508 need to be used together with the shut-off valve during installation, so as to facilitate their maintenance later.
温度变送器3是把温度传感器的信号转变为电流信号，连接到二次仪表上从而显示出对应的温度，温度变送器3用于监测进料管道1中油气温度的变化并将信号反馈至控制室。压力变送器507用于监测运输管道501中油气的压力变化，并将信号反馈至控制室，控制室根据油气的温度、压力信号来综合控制油气混输泵504的运转频率，电磁加热器7用于给油气中的原油加热，使得原油变的稀释，降低原油外输压力，提供一个合理的温升。The temperature transmitter 3 converts the signal of the temperature sensor into a current signal, and connects it to the secondary instrument to display the corresponding temperature. The temperature transmitter 3 is used to monitor the temperature change of the oil and gas in the feed pipeline 1 and feed back the signal to the control room. The pressure transmitter 507 is used to monitor the pressure change of the oil and gas in the transportation pipeline 501, and feed back the signal to the control room. The control room comprehensively controls the operating frequency of the oil and gas mixing pump 504 according to the temperature and pressure signals of the oil and gas. The electromagnetic heater 7 It is used to heat the crude oil in the oil and gas, so that the crude oil becomes diluted, reduces the pressure of crude oil export, and provides a reasonable temperature rise.
本油气混输系统去除了中间的油气分离工段，经第一油气运输系统5的运输作用，油气通过出料管道6运输直接将油、气、水三相介质运输到终端进行分离，终端设备无需改造，大大的简化了油气运输管网的布置。This oil and gas mixed transportation system removes the intermediate oil and gas separation section. Through the transportation function of the first oil and gas transportation system 5, the oil and gas are transported through the discharge pipeline 6 to directly transport the three-phase medium of oil, gas and water to the terminal for separation, and the terminal equipment does not need The transformation greatly simplifies the layout of the oil and gas transportation pipeline network.
需要说明的是，原油是成份复杂的各种烃的混合物，也是抗磁性物质。当原油通过达到足够大磁场强度及梯度的磁场时，由于洛仑兹力的作用，使得在结晶温度附近处于无序热运动中的蜡分子们获得了能量，调整了彼此的磁撞方位，提供了普遍的结晶生核条件，从而生成了大量直径很小呈球状的微晶悬浮在原油中。防蜡除垢器4可以预防原油中产生结晶蜡，防蜡除垢器4可以使所接触流体的静电动势发生改变，从而使流体中各种物质分子之间结合力场发生改变，使固相颗粒处于悬浮分散状态，抑制蜡、垢和腐蚀的形成，使原油中的蜡和胶体物质呈悬浮状态，不易聚集吸附于管壁上，使液相中的各种离子及杂质不易结合形成垢，并能使已结的垢脱落。防蜡除垢器4属于现有技术，本领域的技术人员完全可以实施，在此不再对防蜡除垢器4的结构、原理进行赘述。It should be noted that crude oil is a mixture of various hydrocarbons with complex components, and it is also a diamagnetic substance. When the crude oil passes through a magnetic field with a sufficiently large magnetic field strength and gradient, due to the Lorentz force, the wax molecules in disordered thermal motion near the crystallization temperature gain energy, adjust the magnetic collision orientation of each other, and provide The common conditions for crystallization nucleation are established, resulting in the formation of a large number of spherical crystallites with small diameters suspended in crude oil. The anti-wax descaling device 4 can prevent crystalline wax from being produced in the crude oil, and the anti-wax descaling device 4 can change the electrostatic potential of the contacted fluid, thereby changing the binding force field between various substance molecules in the fluid and making the solid phase The particles are in a suspended and dispersed state, which inhibits the formation of wax, scale and corrosion, makes the wax and colloidal substances in the crude oil in a suspended state, and is not easy to gather and adsorb on the pipe wall, so that various ions and impurities in the liquid phase are not easy to combine to form scale. And can make the dirt that has formed come off. The anti-wax descaling device 4 belongs to the prior art and can be implemented by those skilled in the art, so the structure and principle of the wax anti-scaling device 4 will not be repeated here.
从井中开采出来的油气会掺杂有沙子等矿物杂质，矿物杂质会导致运输系统发生故障，因此第一油气运输系统5还包括两条排污管道8，两条排污管道8分别与油气混输泵504进、出料侧的运输管道501连通，排污管道8上设置有排污截止阀9，各排污管道8汇合后连通至排污池。需要说明的是，排污时需关闭进料控制阀2，以及出料管道6上的控制阀，油气混输泵504停止不工作，将整个系统中的油气排出。The oil and gas extracted from the well will be mixed with mineral impurities such as sand, and the mineral impurities will cause the failure of the transportation system. Therefore, the first oil and gas transportation system 5 also includes two sewage pipelines 8, and the two sewage pipelines 8 are connected with the oil and gas mixing pump respectively. The transportation pipeline 501 on the inlet and outlet sides of 504 is connected, and a sewage shut-off valve 9 is arranged on the sewage pipeline 8, and each sewage pipeline 8 is connected to the sewage pool after converging. It should be noted that the feed control valve 2 and the control valve on the discharge pipeline 6 need to be closed during sewage discharge, and the oil-gas mixing pump 504 stops working to discharge the oil and gas in the entire system.
为了使本系统连续运转，防止第一油气运输系统5出现故障，本系统还包括第二油气运输系统10，第二油气运输系统10与第一油气运输系统5结构相同，并且第二油气运输系统10与第一油气运输系统5并联于进料管道1和出料管道6之间。第一油气运输系统5与第二油气运输系统10可以轮换工作，便于对其中一个运输系统进行检修。In order to make the system operate continuously and prevent the failure of the first oil and gas transportation system 5, the system also includes a second oil and gas transportation system 10, the second oil and gas transportation system 10 has the same structure as the first oil and gas transportation system 5, and the second oil and gas transportation system 10 is connected in parallel with the first oil and gas transportation system 5 between the feed pipeline 1 and the discharge pipeline 6 . The first oil and gas transportation system 5 and the second oil and gas transportation system 10 can work alternately, which facilitates maintenance of one of the transportation systems.
为了单独将出料管道6与第一油气运输系统5、第二油气运输系统10隔离，便于对出料管道6的检修，在出料管道6上设置有出料控制阀26，出料控制阀24位于电磁加热器7的上游。In order to separate the discharge pipeline 6 from the first oil and gas transportation system 5 and the second oil and gas transportation system 10, and to facilitate the maintenance of the discharge pipeline 6, a discharge control valve 26 is arranged on the discharge pipeline 6, and the discharge control valve 24 is located upstream of the electromagnetic heater 7 .
为了防止进料管道1中的油压过高，在进料管道1上连通有进料应急泄压管道11，进料应急泄压管道11的起始端位于进料控制阀2和温度变送器3之间，进料应急泄压管道11按油气泄压方向设置有进料应急安全阀12；进料应急安全阀12在使用安装时需配合截止阀一起使用，进料应急安全阀12两侧均设置有截止阀，以便于后期对其检修。In order to prevent the oil pressure in the feed pipeline 1 from being too high, a feed emergency pressure relief pipeline 11 is connected to the feed pipeline 1, and the starting end of the feed emergency pressure relief pipeline 11 is located at the feed control valve 2 and the temperature transmitter 3, the feed emergency pressure relief pipeline 11 is provided with a feed emergency safety valve 12 according to the direction of oil and gas pressure relief; All are equipped with shut-off valves for later inspection and maintenance.
为了防止出料管道6中的油压过高，在出料管道6上连通有出料应急泄压管道13，出料应急泄压管道13的起始端位于电磁加热器7的下游，出料应急泄压管道13按油气泄压方向设置有出料应急安全阀14；出料应急安全阀14在使用安装时需配合截止阀一起使用，进料应急安全阀12两侧均设置有截止阀，以便于后期对其检修。In order to prevent the oil pressure in the discharge pipeline 6 from being too high, a discharge emergency pressure relief pipeline 13 is connected to the discharge pipeline 6. The starting end of the discharge emergency pressure relief pipeline 13 is located downstream of the electromagnetic heater 7, and the discharge emergency The pressure relief pipeline 13 is provided with a material discharge emergency safety valve 14 according to the direction of oil and gas pressure relief; the material discharge emergency safety valve 14 needs to be used together with a cut-off valve during use and installation, and both sides of the feed material emergency safety valve 12 are provided with a stop valve so that Repair it later.
进料应急泄压管道11的末端与出料应急泄压管道13的末端连通至总泄压管道15，总泄压管道15与应急储料罐16的进料口连通，总泄压管道15上设置有应急泄压截止阀17；应急储料罐16的出料口通过应急供料管道18与进料管道1连通，应急供料管道18的末端位于温度变送器3和防蜡除垢器4之间，应急供料管道18上设置有应急供料截止阀19。The end of the feed emergency pressure relief pipeline 11 is connected to the end of the discharge emergency pressure relief pipeline 13 to the main pressure relief pipeline 15, and the total pressure relief pipeline 15 is connected to the feed port of the emergency storage tank 16. An emergency pressure relief cut-off valve 17 is provided; the outlet of the emergency storage tank 16 is connected with the feed pipeline 1 through the emergency supply pipeline 18, and the end of the emergency supply pipeline 18 is located at the temperature transmitter 3 and the anti-wax descaling device 4, the emergency feed pipeline 18 is provided with an emergency feed cut-off valve 19.
在实际运输过程中进料管道1发生过压的概率远大于出料管道6，因此在进料管道1上连通有备用进料应急泄压管道20，备用进料应急泄压管道20的起始端位于防蜡除垢器4的下游，备用进料应急泄压管道20的末端与总泄压管道15连通，备用进料应急泄压管道20上设置有备用应急泄压电动阀21。In the actual transportation process, the probability of overpressure in the feed pipeline 1 is much greater than that of the discharge pipeline 6, so the standby feed emergency pressure relief pipeline 20 is connected to the feed pipeline 1, and the starting end of the standby feed emergency pressure relief pipeline 20 Located downstream of the anti-wax descaling device 4 , the end of the standby feed emergency pressure relief pipeline 20 communicates with the main pressure relief pipeline 15 , and a standby emergency pressure relief electric valve 21 is provided on the standby feed emergency pressure relief pipeline 20 .
当运输管道501中的伴生气突然增多，远超于油气混输泵504的运输上限，导致油气混输泵504产生气锁现象，使得油气混输泵504排量降低，为了排除油气混输泵504中的气体，本系统还包括循环管道22，循环管道22与第二油气运输系统10、第一油气运输系统5并联于进料管道1和出料管道6之间，循环管道22上设置有循环电动阀23；过滤器503上连通有备用过滤出料管24，备用过滤出料管24位于运输管道501的下方并且连通至运输管道501，备用过滤出料管24上设置有备用过滤出料电动阀25。When the associated gas in the transportation pipeline 501 suddenly increases, far exceeding the transportation upper limit of the oil-gas mixed transport pump 504, resulting in an air lock phenomenon in the oil-gas mixed transport pump 504, which reduces the displacement of the oil-gas mixed transport pump 504, in order to eliminate the oil-gas mixed transport pump 504 For the gas in 504, the system also includes a circulation pipeline 22, the circulation pipeline 22 is connected in parallel with the second oil and gas transportation system 10 and the first oil and gas transportation system 5 between the feed pipeline 1 and the discharge pipeline 6, and the circulation pipeline 22 is provided with Circulation electric valve 23; the filter 503 is connected with a spare filter discharge pipe 24, the spare filter discharge pipe 24 is located below the transportation pipeline 501 and connected to the transportation pipeline 501, and the spare filter discharge pipe 24 is provided with a spare filter discharge pipe Electric valve 25.
排气过程为：油气在开采过程中，某个开采阶段伴生气的含量会偶发性增多超出了油气混输泵504的运输能力，位于油气混输泵504两侧的压力变送器507检测运输管道501中的压力，具体来说，油气混输泵504出料侧的压力变送器507检测到的压力降低，油气混输泵504进料侧的压力变送器507检测到的压力升高，此时，备用过滤出料电动阀25动作，由于备用过滤出料管24位于运输管道501的下方，纯油料优先通过备用过滤出料管24，纯油料会补充到运输管道501中以降低系统中的伴生气含量，若上述操作不能解除气锁现象，循环电动阀23开始间断性动作，含有气体的油气循环后再次经过过滤器503，此时伴生气存储于过滤器503中。需要说明的是，由于出料管道6上的压力较高，当循环电动阀23瞬间开启时，含有气体的油气优先通过循环管道22。伴生气只是暂时存储于过滤器503中，随着油气混输泵504的运输，伴生气会逐渐的被运输出去，过滤器503存储的伴生气回归至正常。若上述操作还是除不能解除气锁现象，此时控制备用应急泄压电动阀21动作，过量的油气特别是伴生气经备用进料应急泄压管道20流通至应急储料罐16。The exhaust process is as follows: during the oil and gas production process, the content of associated gas in a certain production stage will occasionally increase beyond the transportation capacity of the oil and gas mixed transportation pump 504, and the pressure transmitters 507 located on both sides of the oil and gas mixed transportation pump 504 detect the transportation The pressure in the pipeline 501, specifically, the pressure detected by the pressure transmitter 507 on the discharge side of the oil-gas mixed pump 504 decreases, and the pressure detected by the pressure transmitter 507 on the feed side of the oil-gas mixed pump 504 increases , at this time, the standby filter discharge electric valve 25 operates, and since the standby filter discharge pipe 24 is located below the transportation pipeline 501, the pure oil will first pass through the standby filter discharge pipe 24, and the pure oil will be added to the transportation pipeline 501 to reduce the system pressure. If the gas lock cannot be eliminated by the above operation, the circulation electric valve 23 starts to operate intermittently, and the oil gas containing gas circulates and passes through the filter 503 again, and the associated gas is stored in the filter 503 at this time. It should be noted that, due to the high pressure on the discharge pipeline 6 , when the circulation electric valve 23 is opened instantaneously, the oil gas containing gas passes through the circulation pipeline 22 preferentially. The associated gas is only temporarily stored in the filter 503. With the transportation of the oil-gas mixing pump 504, the associated gas will be gradually transported out, and the associated gas stored in the filter 503 will return to normal. If the above operations still cannot remove the air lock phenomenon, the standby emergency pressure relief electric valve 21 is controlled to act at this time, and excess oil gas, especially associated gas, flows to the emergency storage tank 16 through the standby feed emergency pressure relief pipeline 20 .
如图3所示，本油气混输系统中的温度变送器3、油气混输泵504进、出料侧的压力变送器507将用于采集的管道中的相关数据，并将采集数据传输到控制室中的PLC控制器中，由PLC控制器控制油气混输泵504、备用过滤出料电动阀25、循环电动阀23和备用应急泄压电动阀21的动作。本系统由PLC控制器自动控制，本系统可自动实现三种工况的运行，第一种，实现第一油气运输系统5和第二油气运输系统10的切换运行，保证正常情况下一启一备；第二种，解除油气混输泵504出现的气锁现象；第三种，解除进料管道1出现压力异常增高的情况。本系统通过PLC来进行控制，这对于本技术方案所要解决的问题并非必要，PLC是控制本系统的一种优选方式。As shown in Figure 3, the temperature transmitter 3 in the oil-gas mixed transportation system and the pressure transmitter 507 on the inlet and outlet sides of the oil-gas mixed transportation pump 504 will be used to collect relevant data in the pipeline, and will collect the data It is transmitted to the PLC controller in the control room, and the PLC controller controls the actions of the oil-gas mixing pump 504, the backup filter discharge electric valve 25, the circulation electric valve 23 and the backup emergency pressure relief electric valve 21. This system is automatically controlled by a PLC controller. This system can automatically realize the operation of three working conditions. The first one is to realize the switching operation of the first oil and gas transportation system 5 and the second oil and gas transportation system 10, so as to ensure that under normal conditions, one starts and one starts. The second method is to relieve the air lock phenomenon in the oil-gas mixing pump 504; the third method is to relieve the abnormally high pressure of the feed pipeline 1. This system is controlled by PLC, which is not necessary for the problem to be solved by this technical solution, and PLC is a preferred way to control this system.
以上所述的实施例仅是对本发明的优选方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通技术人员对本发明的技术方案做出的各种变形和改进，均应落入本发明权利要求书确定的保护范围内。The above-mentioned embodiments are only to describe the preferred mode of the present invention, not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those skilled in the art may make various Variations and improvements should fall within the scope of protection defined by the claims of the present invention.
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