CN108828160A - Test the portable unit of corrosive gas and dissolved oxygen in oil gas pipeline - Google Patents
Test the portable unit of corrosive gas and dissolved oxygen in oil gas pipeline Download PDFInfo
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- 239000007789 gas Substances 0.000 title claims abstract description 94
- 238000012360 testing method Methods 0.000 title claims abstract description 58
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000001301 oxygen Substances 0.000 title claims abstract description 51
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000003921 oil Substances 0.000 claims abstract description 36
- 238000005191 phase separation Methods 0.000 claims abstract description 27
- 239000010779 crude oil Substances 0.000 claims abstract description 26
- 235000019476 oil-water mixture Nutrition 0.000 claims abstract description 25
- 238000010521 absorption reaction Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 12
- 239000002912 waste gas Substances 0.000 claims abstract description 7
- 235000019198 oils Nutrition 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 238000000926 separation method Methods 0.000 abstract description 14
- 241000894006 Bacteria Species 0.000 abstract description 11
- 239000012071 phase Substances 0.000 description 35
- 238000005070 sampling Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000295146 Gallionellaceae Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002795 fluorescence method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
本发明公开了一种测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其包括三相分离装置，其内设有油水分离装置，三相分离装置上设有第一、二介质入口，第一、二介质入口与设有溶解氧测试装置的流通杯连接，三相分离装置上设有油水混合物排出口，油水分离装置上设有原油排出口，油水混合物排出口与废气吸收容器连接，原油排出口与原油收集容器连接，三相分离装置的顶端和底端分别设有气相排出口和废液排出口，气相排出口通过排气管与废气吸收容器连接，排气管上连接有气体测试仪。其目的是为了提供一种可在现场同时进行溶解氧、O2、CO2、H2S以及细菌含量测试的装置，提高了测试的准确度。
The invention discloses a portable device for testing corrosive gas and dissolved oxygen in an oil and gas transmission pipeline, which includes a three-phase separation device, an oil-water separation device is arranged inside, and first and second medium inlets are arranged on the three-phase separation device. The first and second medium inlets are connected to the circulation cups equipped with dissolved oxygen testing devices. The three-phase separation device is equipped with an oil-water mixture discharge port, and the oil-water separation device is provided with a crude oil discharge port. The oil-water mixture discharge port is connected to the exhaust gas absorption container. The crude oil discharge port is connected to the crude oil collection container. The top and bottom of the three-phase separation device are respectively provided with a gas phase discharge port and a waste liquid discharge port. The gas phase discharge port is connected to the waste gas absorption container through an exhaust pipe. tester. The purpose of the invention is to provide a device capable of simultaneously testing dissolved oxygen, O 2 , CO 2 , H 2 S and bacteria content on site, thereby improving the accuracy of the test.
Description
技术领域technical field
本发明涉及一种用于测试油气输送管线中腐蚀性气体与溶解氧的装置，主要针对于油气田，提供了一种可在现场同时进行水中溶解氧、细菌含量以及气相O2、CO2、H2S含量测试的装置。The invention relates to a device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines. It is mainly aimed at oil and gas fields, and provides a device that can simultaneously measure dissolved oxygen, bacterial content in water, and gas phase O 2 , CO 2 , H 2 S content testing device.
背景技术Background technique
随着油气资源的深入开发，注水、注空气、注氮气等工艺技术在各大油气田得到了广泛的应用，取得了显著的增产效果。近年来，发现井筒与管线腐蚀失效频发，腐蚀环境恶劣，这不仅是因为油气介质中含有CO2、H2S等酸性气体，也是因为注水、注气等油气生产中引入了具有更高腐蚀性的溶解氧及与腐蚀相关的细菌，如硫酸盐还原菌(SRB)、铁细菌(FB)、腐生菌(TGB)。因此，有必要对油气田井下或地面设施内的溶解氧含量、O2、CO2、H2S及细菌含量进行测试，为油气田的腐蚀防护与生产工艺调整提供数据支撑。目前，用于水中溶解氧含量测试的方法主要有检测管法、极谱法、荧光法及电化学法。基于上述方法的仪器在现场应用时多采用在线监测或取样后带回在室内测试，前者结果准确但费用较大；后者受空气污染较大精度较低，且时效性较低。此外，对于油水混合物来说，由于悬浮物、原油等杂质的影响，在现场进行细菌测试较为困难，多是现场取样后在实验室处理后进行测试；对于气相中O2、CO2、H2S含量测试的方法也多采用仪器分析的方法，在室内借助于现代仪器进行测试分析。除了从取样直至测试的整个过程中不可避免地受到其他因素的影响外，时效性上也较差，不能及时获取测试结果，为日常生产提供支撑。With the in-depth development of oil and gas resources, technologies such as water injection, air injection, and nitrogen injection have been widely used in major oil and gas fields, and have achieved significant production increase effects. In recent years, it has been found that wellbore and pipeline corrosion failures occur frequently, and the corrosion environment is harsh. Sexual dissolved oxygen and corrosion-related bacteria, such as sulfate reducing bacteria (SRB), iron bacteria (FB), saprophytic bacteria (TGB). Therefore, it is necessary to test the dissolved oxygen content, O 2 , CO 2 , H 2 S and bacteria content in the downhole or surface facilities of the oil and gas field, so as to provide data support for the corrosion protection and production process adjustment of the oil and gas field. At present, the methods used to test the dissolved oxygen content in water mainly include detection tube method, polarographic method, fluorescence method and electrochemical method. The instruments based on the above methods usually use on-line monitoring or take samples back for indoor testing when they are used in the field. The former results are accurate but the cost is high; In addition, for oil-water mixtures, due to the influence of impurities such as suspended solids and crude oil, it is difficult to conduct bacterial tests on site. Most of them are tested on - site after sampling in the laboratory ; The method of S content test also mostly adopts the method of instrumental analysis, and the test analysis is carried out indoors with the help of modern instruments. In addition to being inevitably affected by other factors in the whole process from sampling to testing, the timeliness is also poor, and the test results cannot be obtained in time to provide support for daily production.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种可在现场同时进行溶解氧、O2、CO2、H2S以及细菌含量测试的装置，改进目前油气田关于溶解氧、O2、CO2、H2S等腐蚀性成分的检测方法，提高了测试的准确度。The technical problem to be solved by the present invention is to provide a device that can simultaneously test dissolved oxygen, O 2 , CO 2 , H 2 S and bacteria content on site, so as to improve the current oil and gas field's testing of dissolved oxygen, O 2 , CO 2 , H 2 The detection method of corrosive components such as S has improved the accuracy of the test.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，包括三相分离装置，所述三相分离装置内设有油水分离装置，所述三相分离装置上设有第一介质入口和第二介质入口，所述第二介质入口连通至所述油水分离装置，所述第一介质入口和第二介质入口通过管路与一流通杯连接，所述流通杯内设有溶解氧测试装置，所述三相分离装置上设有油水混合物排出口，所述油水分离装置上设有原油排出口，所述油水混合物排出口通过管路与废气吸收容器连接，所述原油排出口通过管路与原油收集容器连接，所述三相分离装置的顶端和底端分别设有气相排出口和废液排出口，所述气相排出口通过排气管与废气吸收容器连接，所述排气管上连接有气体测试仪，所述第一介质入口、第二介质入口、油水混合物排出口、原油排出口、气相排出口和废液排出口上均设有阀门。The present invention is a portable device for testing corrosive gas and dissolved oxygen in an oil and gas transmission pipeline, which includes a three-phase separation device, an oil-water separation device is provided in the three-phase separation device, and a first medium inlet and a first medium inlet are provided on the three-phase separation device. The second medium inlet, the second medium inlet is connected to the oil-water separation device, the first medium inlet and the second medium inlet are connected to a flow cup through a pipeline, and a dissolved oxygen test device is installed in the flow cup , the three-phase separation device is provided with an oil-water mixture discharge port, the oil-water separation device is provided with a crude oil discharge port, and the oil-water mixture discharge port is connected to the exhaust gas absorption container through a pipeline, and the crude oil discharge port is connected to the waste gas absorption container through a pipeline Connected to the crude oil collection container, the top and bottom of the three-phase separation device are respectively provided with a gas phase discharge port and a waste liquid discharge port, and the gas phase discharge port is connected to the waste gas absorption container through an exhaust pipe. A gas tester is connected, and valves are provided on the first medium inlet, the second medium inlet, the oil-water mixture outlet, the crude oil outlet, the gas phase outlet and the waste liquid outlet.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述三相分离装置上安装有安全阀。The invention is a portable device for testing corrosive gas and dissolved oxygen in an oil and gas transmission pipeline, wherein a safety valve is installed on the three-phase separation device.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述第一介质入口和第二介质入口分别与一个三通接头的第一接口和第二接口连接，所述三通接头的第三接口通过管路与所述流通杯连接，所述三通接头与所述流通杯之间的管路上设置有水相二次过滤器。The present invention is a portable device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines, wherein the first medium inlet and the second medium inlet are respectively connected to the first interface and the second interface of a three-way joint, and the three-way joint The third interface is connected to the flow cup through a pipeline, and a water phase secondary filter is arranged on the pipeline between the tee joint and the flow cup.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述排气管与所述气体测试仪之间还设置有水汽过滤器。The present invention is a portable device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines, wherein a water vapor filter is also arranged between the exhaust pipe and the gas tester.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述溶解氧测试装置为溶解氧测试仪探头。The invention relates to a portable device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines, wherein the dissolved oxygen testing device is a probe of a dissolved oxygen tester.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述溶解氧测试装置为检测管。The invention relates to a portable device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines, wherein the dissolved oxygen testing device is a detection tube.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置与现有技术不同之处在于本发明将待测管道介质入口设置在三相分离装置侧面底部，气相排出口和水相介质排出口(油水混合物排出口和原油排出口)分别设置在三相分离装置顶部阀板和侧面上侧。同时，在气相排出口末端与油水混合物排出口末端加装了一个装有碱液的容器(废气吸收容器)，用于吸收排出的CO2、H2S等酸性气体以及排出油水混合物。为了有效分离油水混合物，在三相分离器内部设置了一个兼具吸油功能的过滤装置(油水分离装置)。本发明设计简单、操作方便，可同时满足气水两相中溶解氧、O2、CO2、H2S及细菌含量等参数的测试要求。The difference between the portable device for testing corrosive gas and dissolved oxygen in the oil and gas transmission pipeline of the present invention is that the medium inlet of the pipeline to be tested is set at the bottom of the side of the three-phase separation device, and the gas phase outlet and the water phase medium outlet are arranged in the invention. (Oil-water mixture discharge port and crude oil discharge port) are respectively arranged on the top valve plate and the upper side of the three-phase separation device. At the same time, a container (exhaust gas absorption container) with lye is installed at the end of the gas phase discharge port and the oil-water mixture discharge port to absorb the discharged acid gases such as CO 2 and H 2 S and discharge the oil-water mixture. In order to effectively separate the oil-water mixture, a filter device (oil-water separation device) with oil absorption function is installed inside the three-phase separator. The invention is simple in design and convenient in operation, and can simultaneously meet the test requirements of parameters such as dissolved oxygen, O 2 , CO 2 , H 2 S and bacteria content in the gas-water two-phase.
下面结合附图对本发明作进一步说明。The present invention will be further described below in conjunction with accompanying drawing.
附图说明Description of drawings
图1为本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置的结构示意图。Fig. 1 is a schematic structural view of a portable device for testing corrosive gas and dissolved oxygen in an oil and gas pipeline according to the present invention.
具体实施方式Detailed ways
如图1所示，本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置包括三相分离装置1，所述三相分离装置1内设有油水分离装置2，所述三相分离装置1上设有第一介质入口3和第二介质入口4，所述第二介质入口4连通至所述油水分离装置2，所述第一介质入口3和第二介质入口4通过管路与一流通杯14连接，所述流通杯14内设有溶解氧测试装置15，所述三相分离装置1上设有油水混合物排出口5，所述油水分离装置2上设有原油排出口6，所述油水混合物排出口5通过管路与废气吸收容器11连接，所述原油排出口6通过管路与原油收集容器16连接，所述三相分离装置1的顶端和底端分别设有气相排出口8和废液排出口17，所述气相排出口8通过排气管与废气吸收容器11连接，所述排气管上连接有气体测试仪10，所述第一介质入口3、第二介质入口4、油水混合物排出口5、原油排出口6、气相排出口8和废液排出口17上均设有阀门。As shown in Figure 1, the portable device for testing corrosive gas and dissolved oxygen in the oil and gas transmission pipeline of the present invention includes a three-phase separation device 1, and an oil-water separation device 2 is arranged in the three-phase separation device 1, and the three-phase separation device 1 is provided with a first medium inlet 3 and a second medium inlet 4, the second medium inlet 4 is connected to the oil-water separation device 2, and the first medium inlet 3 and the second medium inlet 4 are connected to a The circulation cup 14 is connected, and the dissolved oxygen testing device 15 is provided in the circulation cup 14. The oil-water mixture discharge port 5 is provided on the three-phase separation device 1, and the crude oil discharge port 6 is provided on the oil-water separation device 2. The oil-water mixture discharge port 5 is connected to the exhaust gas absorption container 11 through a pipeline, the crude oil discharge port 6 is connected to the crude oil collection container 16 through a pipeline, and the top and bottom ends of the three-phase separation device 1 are respectively provided with a gas phase discharge port 8 and a waste liquid discharge port 17, the gas phase discharge port 8 is connected to the waste gas absorption container 11 through an exhaust pipe, the gas tester 10 is connected to the exhaust pipe, the first medium inlet 3, the second medium inlet 4. The oil-water mixture discharge port 5, the crude oil discharge port 6, the gas phase discharge port 8 and the waste liquid discharge port 17 are all provided with valves.
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述三相分离装置1上安装有安全阀7。The present invention is a portable device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines, wherein the three-phase separation device 1 is equipped with a safety valve 7 .
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述第一介质入口3和第二介质入口4分别与一个三通接头12的第一接口和第二接口连接，所述三通接头12的第三接口通过管路与所述流通杯14连接，所述三通接头12与所述流通杯14之间的管路上设置有水相二次过滤器13。The present invention is a portable device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines, wherein the first medium inlet 3 and the second medium inlet 4 are respectively connected to the first interface and the second interface of a tee joint 12, the said The third interface of the three-way joint 12 is connected to the circulation cup 14 through a pipeline, and a water-phase secondary filter 13 is arranged on the pipeline between the three-way joint 12 and the circulation cup 14 .
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述排气管与所述气体测试仪10之间还设置有水汽过滤器9。The present invention is a portable device for testing corrosive gas and dissolved oxygen in an oil and gas transmission pipeline, wherein a water vapor filter 9 is also arranged between the exhaust pipe and the gas tester 10 .
本发明测试油气输送管线中腐蚀性气体与溶解氧的便携装置，其中所述溶解氧测试装置15为溶解氧测试仪探头或者检测管。The present invention is a portable device for testing corrosive gas and dissolved oxygen in oil and gas transmission pipelines, wherein the dissolved oxygen testing device 15 is a probe or a detection tube of a dissolved oxygen tester.
本发明将待测管道介质入口设置在三相分离装置1侧面底部，气相排出口8和液相介质排出口(油水混合物排出口5和原油排出口6)分别设置在三相分离装置1顶部阀板和侧面上侧。同时，在气相排出口8末端与油水混合物排出口5末端加装了一个装有碱液的容器(废气吸收容器11)，用于吸收排出的CO2、H2S等酸性气体以及排出油水混合物。为了有效分离油水混合物，在三相分离器内部设置了一个兼具吸油功能的过滤装置(油水分离装置2)。本发明设计简单、操作方便，可同时满足气水两相中溶解氧、O2、CO2、H2S及细菌含量等参数的测试要求。In the present invention, the medium inlet of the pipeline to be tested is arranged at the bottom of the side of the three-phase separation device 1, and the gas phase discharge port 8 and the liquid phase medium discharge port (the oil-water mixture discharge port 5 and the crude oil discharge port 6) are respectively arranged at the top valve of the three-phase separation device 1 Plate and side up side. At the same time, a container (exhaust gas absorption container 11) with lye is installed at the end of the gas phase discharge port 8 and the end of the oil-water mixture discharge port 5 to absorb acid gases such as CO 2 , H 2 S and discharge the oil-water mixture. . In order to effectively separate the oil-water mixture, a filter device (oil-water separation device 2) with oil absorption function is installed inside the three-phase separator. The invention is simple in design and convenient in operation, and can simultaneously meet the test requirements of parameters such as dissolved oxygen, O 2 , CO 2 , H 2 S and bacteria content in the gas-water two-phase.
本发明通过三相分离装置1与内置的油水分离装置2将需要进行测试的油、气、水三相分离，经水汽过滤器9干燥后，利用气体测试仪10可以进行O2、CO2、H2S含量的测试。同时，水相经二次过滤器过滤后进入流通杯14内可以进行溶解氧含量测试。分离出的水相经水相二次过滤器13过滤后，其水质状况良好，可以进行细菌含量测试。三相分离器内的油水分离装置2由吸收材料及常用的过滤材料制成，兼具吸油与过滤的功能，可快速将进入油水分离装置2的油水混合物分离，可实现溶解氧含量的连续监测。The present invention uses the three-phase separation device 1 and the built-in oil-water separation device 2 to separate the three phases of oil, gas and water that need to be tested. After drying through the water vapor filter 9, the gas tester 10 can be used to test O2 , CO2 , H 2 S content test. At the same time, the water phase enters the circulation cup 14 after being filtered by the secondary filter, so that the dissolved oxygen content can be tested. After the separated water phase is filtered through the water phase secondary filter 13, the water quality is in good condition, and the bacteria content test can be carried out. The oil-water separation device 2 in the three-phase separator is made of absorbent materials and commonly used filter materials, and has the functions of oil absorption and filtration. It can quickly separate the oil-water mixture entering the oil-water separation device 2, and can realize continuous monitoring of dissolved oxygen content. .
本发明的工作过程如下：Working process of the present invention is as follows:
集气管线气相中O2、CO2、H2S含量测试时，通过液压油管将集气管线取样口与三通接头12连接，关闭废液排出口17、油水混合物排出口5及原油排出口6，将排气管放入提前准备好的废气吸收容器11内。依次打开第一介质入口3与第二介质入口4、气相排出口8。最后，缓慢打开取样口，放入集气管线内的介质。待三相分离装置1内原有空气排空后，打开气体测试仪10，待测试仪读数稳定后，记录数据并关闭取样口阀门、第一介质入口3与第二介质入口4，并打开废液排出口17排出三相分离器内的残留介质。When testing the content of O 2 , CO 2 , and H 2 S in the gas phase of the gas-gathering pipeline, connect the sampling port of the gas-gathering pipeline to the tee joint 12 through the hydraulic oil pipe, and close the waste liquid outlet 17, the oil-water mixture outlet 5 and the crude oil outlet 6. Put the exhaust pipe into the exhaust gas absorption container 11 prepared in advance. The first medium inlet 3 and the second medium inlet 4 and the gas phase outlet 8 are opened in sequence. Finally, slowly open the sampling port and put the media in the gas collection line. After the original air in the three-phase separation device 1 is emptied, open the gas tester 10, and after the reading of the tester is stable, record the data and close the valve of the sampling port, the first medium inlet 3 and the second medium inlet 4, and open the waste liquid The discharge port 17 discharges the residual medium in the three-phase separator.
输水管线中溶解氧含量的测试，通过液压油管将输水管线取样口与三通接头12连接，关闭废液排出口17、油水混合物排出口5及原油排出口6，将排气管放入提前准备好的废气吸收容器11内。依次打开第一介质入口3与第二介质入口4、气相排出口8。最后，缓慢打开取样口，放入输水管线内的介质。待三相分离装置1内空气排空，且排出与三相分离装置1等体积的水后，关闭取样口阀门、第一介质入口3与第二介质入口4。卸下三通接头12，将液压油管连接至第二介质入口4，将水相二次过滤器13进水管连接第一介质入口3。依次打开第一介质入口3处的阀门和第二介质入口4处的阀门以及取样口阀门。打开溶解氧测试仪，待其在空气中稳定后，放入无氧水检测是否能回归到10ppb以下，若能回归说明仪器正常。将探头插入流通杯14中，确定探头顶端表面无气泡后，待读数稳定，记录数据。关闭取样口阀门、第一介质入口3与第二介质入口4，并打开废液排出口17排出三相分离器内的残留介质。To test the dissolved oxygen content in the water pipeline, connect the sampling port of the water pipeline to the tee joint 12 through the hydraulic oil pipe, close the waste liquid outlet 17, the oil-water mixture outlet 5 and the crude oil outlet 6, and put the exhaust pipe into In the exhaust gas absorption container 11 prepared in advance. The first medium inlet 3 and the second medium inlet 4 and the gas phase outlet 8 are opened in sequence. Finally, slowly open the sampling port and put the medium in the water pipeline. After the air in the three-phase separation device 1 is emptied and the water equal to the volume of the three-phase separation device 1 is discharged, the valve of the sampling port, the first medium inlet 3 and the second medium inlet 4 are closed. Remove the three-way joint 12, connect the hydraulic oil pipe to the second medium inlet 4, and connect the water-phase secondary filter 13 inlet pipe to the first medium inlet 3. Open the valve at the first medium inlet 3, the valve at the second medium inlet 4, and the sampling port valve in sequence. Turn on the dissolved oxygen tester, and after it is stable in the air, put it into anaerobic water to check whether it can return to below 10ppb. If it can return, it means that the instrument is normal. Insert the probe into the flow cup 14, after confirming that there are no air bubbles on the surface of the probe tip, wait for the reading to be stable, and record the data. Close the sampling port valve, the first medium inlet 3 and the second medium inlet 4, and open the waste liquid outlet 17 to discharge the residual medium in the three-phase separator.
含有伴生气的输油管线，在测试前期无液相自取样口排出时，可按照上述集气管线气相中O2、CO2、H2S含量测试中的操作方法开展气相各介质参数的测试。当有液相排出后，在测试水相中溶解氧时，通过液压油管将输油管线取样口与三通接头12连接，关闭废液排出口17及原油排出口6，将排气管放入提前准备好的废气吸收容器11内。依次打开第一介质入口3与第二介质入口4、油水混合物排出口5、气相排出口8。缓慢打开取样口，放入输油管线内的介质，待三相分离装置1内空气完全排出，且有与三相分离装置1等体积的油水混合物排出时，关闭取样口阀门、第一介质入口3与第二介质入口4。卸下三通接头12，将液压油管连接至第二介质入口4，将水相二次过滤器13进水管连接第一介质入口3阀门。依次打开取样口阀门、第一介质入口3处的阀门和第二介质入口4处的阀门。观察过滤器后的水质情况，如果水质状况良好，可以进行溶解氧测试；如果水质状况较差，含有悬浮物与油污，则需要更换滤芯及油水分离装置2上的滤芯与吸油材料。另外，还需要定时观察原油排出口6处排出的原油情况，如含有大量的水，则关闭原油排出口6，若含水量较少，则需要打开原油排出口6，排出三相分离器内滤芯内积存的原油。For oil pipelines containing associated gas, when no liquid phase is discharged from the sampling port in the early stage of the test, the test of various medium parameters of the gas phase can be carried out according to the operation method of the O 2 , CO 2 , and H 2 S content test in the gas phase of the gas collection pipeline mentioned above. After the liquid phase is discharged, when testing the dissolved oxygen in the water phase, connect the sampling port of the oil pipeline to the three-way joint 12 through the hydraulic oil pipe, close the waste liquid discharge port 17 and the crude oil discharge port 6, and put the exhaust pipe in advance. In the prepared waste gas absorption container 11. Open the first medium inlet 3 and the second medium inlet 4, the oil-water mixture outlet 5, and the gas phase outlet 8 in sequence. Slowly open the sampling port, put the medium in the oil pipeline, and when the air in the three-phase separation device 1 is completely discharged, and the oil-water mixture equal to the volume of the three-phase separation device 1 is discharged, close the valve of the sampling port and the first medium inlet 3 with second medium inlet 4. Remove the three-way joint 12, connect the hydraulic oil pipe to the second medium inlet 4, and connect the water inlet pipe of the water-phase secondary filter 13 to the valve of the first medium inlet 3. Open the sampling port valve, the valve at the first medium inlet 3 and the valve at the second medium inlet 4 in sequence. Observe the water quality after the filter. If the water quality is good, you can conduct a dissolved oxygen test; if the water quality is poor, containing suspended solids and oil, you need to replace the filter element and the filter element and oil-absorbing material on the oil-water separation device 2. In addition, it is necessary to regularly observe the crude oil discharged from the crude oil discharge port 6. If there is a large amount of water, close the crude oil discharge port 6. If the water content is small, you need to open the crude oil discharge port 6 to discharge the filter element in the three-phase separator. crude oil stored in it.
本发明可在现场同时进行溶解氧、O2、CO2、H2S及细菌含量测试的便携式装置。该装置携带方便、操作简便、可重复使用，对于开展油气田油气水混合物中的溶解氧、O2、CO2、H2S等腐蚀性介质及细菌含量的现场检测工作具有重要的意义。The invention is a portable device that can simultaneously test dissolved oxygen, O 2 , CO 2 , H 2 S and bacteria content on site. The device is easy to carry, easy to operate, and reusable. It is of great significance for on-site detection of dissolved oxygen, O 2 , CO 2 , H 2 S and other corrosive media and bacteria content in oil-gas-water mixtures in oil and gas fields.
以上所述的实施例仅仅是对本发明的优选实施方式进行描述，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作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 descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Variations and improvements should fall within the scope of protection defined by the claims of the present invention.
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