CN216350573U - Oil well solid corrosion inhibitor performance evaluation on-line test device - Google Patents
Oil well solid corrosion inhibitor performance evaluation on-line test device Download PDFInfo
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- CN216350573U CN216350573U CN202122393477.9U CN202122393477U CN216350573U CN 216350573 U CN216350573 U CN 216350573U CN 202122393477 U CN202122393477 U CN 202122393477U CN 216350573 U CN216350573 U CN 216350573U
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Abstract
The utility model discloses an oil well solid corrosion inhibitor performance evaluation online test device. The system comprises a solid corrosion inhibitor evaluation system with a built-in solid corrosion inhibitor, an oil well incoming liquid treatment system connected to the inlet end of the solid corrosion inhibitor evaluation system, and a liquid outlet system connected to the outlet end of the solid corrosion inhibitor evaluation system, wherein the solid corrosion inhibitor evaluation system, the oil well incoming liquid treatment system and the liquid outlet system are hermetically connected with each other to form a whole set of sealed simulation system, and the solid corrosion inhibitor is placed at the inlet of the solid corrosion inhibitor evaluation system and can enable incoming liquid of an oil well entering from the oil well incoming liquid treatment system to continuously and dynamically scour the solid corrosion inhibitor and then be output through the liquid outlet system. Has the advantages that: the performance on-line evaluation of the solid corrosion inhibitor by simulating the continuous production of the oil well from a production zone to a shaft and dynamically scouring is realized, so that the proper corrosion inhibitor is optimized and the feeding period is optimized.
Description
Technical Field
The utility model relates to an evaluation and screening device for an oil field corrosion inhibitor, in particular to an on-line test device for evaluating the performance of an oil well solid corrosion inhibitor.
Background
The corrosion inhibitor is the most common anticorrosion technology for oil field production systems at present. The solid corrosion inhibitor is convenient to transport and use, can slowly release effective corrosion inhibition components for a long time after being placed under a well at one time, has a long effective period, and is widely applied to oil fields. The solid corrosion inhibitor is thrown to the bottom of the well, the produced liquid of the oil well continuously flows from the producing zone to the shaft and is dynamically scoured to be dissolved and released, and the produced liquid of different oil wells has different components, daily liquid production amount, temperature and the like. Aiming at different oil wells, corresponding working condition conditions need to be simulated, the performances of the solid corrosion inhibitor such as the release period, the corrosion inhibition effect and the like are evaluated, and the proper corrosion inhibitor and reasonable adding amount and adding period are preferably selected.
Aiming at the performance evaluation of the solid corrosion inhibitor, a solid medicament dynamic evaluation test device is introduced in the document 'research and application of the solid medicament dynamic evaluation test device' of the thirteenth national corrosion inhibitor academic conference proceedings, the design of the device simulates the actual condition of an oil well, and the working environment of the solid corrosion inhibitor under the oil well can be partially simulated by referring to the structure and the size of the relevant part of the oil well; however, this apparatus can only evaluate solid medicines under a constant liquid volume circulation condition.
In order to be closer to the field dynamic environment, a corrosion inhibitor performance evaluation test device under the condition of simulating the field dynamic working condition is disclosed in the prior art. For example, chinese patent 201320241947.2 discloses an oil field corrosion inhibitor evaluation test device, which includes: the rotary hanging piece method evaluation system (comprising a plurality of test containers, and a gas supply unit for independently supplying gas to each test container) and the tail gas treatment system which are connected in series can simultaneously carry out a plurality of tests, thereby effectively shortening the period of the evaluation test; chinese patent 201910040205.5 discloses an integrated corrosion inhibitor evaluation device and a use method thereof, wherein the integrated corrosion inhibitor evaluation device comprises a constant-temperature magnetic stirring device, a bottle body device, an aeration device, an emptying device, an outer cover inner cover and a support device, and a dosing and temperature monitoring device, so that the operation is convenient, the automation degree is high, the experiment evaluation time and space are saved, and the detection level is improved. Chinese patent 201610349582.3 discloses a device for evaluating the integrity of a corrosion inhibitor film under a scouring condition, which comprises a flow supply circulation unit, a shearing force measuring unit, an electrochemical monitoring unit, a camera observation unit, a test piece testing unit and a corrosion inhibitor filling unit, and can realize monitoring and evaluation on the stability, damage and repair of the corrosion inhibitor film; however, the device can only be used for evaluating and screening the corrosion inhibitor under the conditions of fixed liquid amount and pipe flow dynamics.
In addition, a test device suitable for chemical agents, anticorrosive coatings, metal materials and corrosion resistance effect evaluation is introduced in the research and application of a water injection pipeline corrosion resistance measure evaluation device in the journal oil and gas field ground engineering 2015, volume 34, phase 9, and the device can monitor the corrosion rate of a system on site, screen anticorrosive coatings and anticorrosive materials and evaluate the corrosion control effect of a corrosion inhibitor, a deoxidant and a sulfide remover; however, this device can only be evaluated under on-site ground temperature conditions.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an oil well solid corrosion inhibitor performance evaluation online test device which can simulate the performance online evaluation of the dynamic scouring solid corrosion inhibitor of an oil well output liquid from a production layer to a shaft continuously.
In order to solve the technical problems, the on-line testing device for evaluating the performance of the oil well solid corrosion inhibitor comprises a solid corrosion inhibitor evaluation system internally provided with the solid corrosion inhibitor, an oil well incoming liquid treatment system connected to the inlet end of the solid corrosion inhibitor evaluation system and a liquid outlet system connected to the outlet end of the solid corrosion inhibitor evaluation system, wherein the solid corrosion inhibitor evaluation system, the oil well incoming liquid treatment system and the liquid outlet system are hermetically connected with each other to form a whole set of sealed simulation system, and the solid corrosion inhibitor is placed at the inlet of the solid corrosion inhibitor evaluation system and can enable incoming liquid of an oil well entering from the oil well incoming liquid treatment system to continuously and dynamically scour the solid corrosion inhibitor and then be output through the liquid outlet system.
The oil well liquid coming treatment system comprises an oil well liquid coming pipeline, a heating device arranged in the oil well liquid coming pipeline and used for heating oil well liquid coming, and a flow control device arranged on the oil well liquid coming pipeline and used for controlling the liquid coming flow of the oil well.
And a front sampling test port is arranged on the liquid inlet pipeline of the oil well.
The solid corrosion inhibitor evaluation system comprises a barrel, a placing cavity arranged in the barrel and used for placing the solid corrosion inhibitor, and at least one corrosion coupon monitoring position and at least one corrosion probe monitoring position arranged on the barrel, wherein a corrosion coupon monitoring device is installed at each corrosion coupon monitoring position, and a corrosion probe monitoring device is installed at each corrosion probe monitoring position.
The cylinder is made of quartz glass.
The liquid outlet system comprises a liquid outlet pipeline and a rear sampling test port arranged on the liquid outlet pipeline.
And anti-corrosion materials are arranged in the oil well incoming liquid treatment system, the solid corrosion inhibitor evaluation system and the liquid outlet system.
The utility model has the advantages that:
the whole set of sealed simulation system formed by the mutual sealed connection of the solid corrosion inhibitor evaluation system, the oil well incoming liquid treatment system and the liquid outlet system realizes the online evaluation of the performance of the dynamic scouring solid corrosion inhibitor for simulating the continuous production of the oil well from a production layer to a shaft, thereby optimizing the proper corrosion inhibitor and the feeding period; especially, the heating device arranged in the incoming liquid pipeline of the oil well and the flow control device arranged on the incoming liquid pipeline of the oil well can control corresponding parameters according to specific requirements, simulate different working conditions, control the incoming liquid of the oil well in different temperature environments and flow sizes to perform on-line evaluation on the performance of the solid corrosion inhibitor, and further improve the accuracy of simulation data.
Drawings
FIG. 1 is a schematic structural diagram of an on-line testing device for evaluating the performance of the oil well solid corrosion inhibitor.
Detailed Description
The on-line testing device for evaluating the performance of the oil well solid corrosion inhibitor is further described in detail with reference to the attached drawings and the specific embodiment.
As shown in the figure, the oil well solid corrosion inhibitor performance evaluation online test device comprises a solid corrosion inhibitor evaluation system 2 with a solid corrosion inhibitor 4 arranged inside, an oil well incoming liquid treatment system 1 connected to the inlet end of the solid corrosion inhibitor evaluation system, and a liquid outlet system 3 connected to the outlet end of the solid corrosion inhibitor evaluation system, and as can be seen from the figure, the oil well incoming liquid treatment system 1 comprises an oil well incoming liquid pipeline 5, a heating device 6 arranged in the oil well incoming liquid pipeline and used for heating oil well incoming liquid, and a flow control device 7 arranged in the oil well incoming liquid pipeline and used for controlling the liquid flow of the oil well, wherein the flow control device 7 comprises a booster pump 16 and a flow meter, and the liquid flow control range is 0.1 m3/h～1 m3The heating device 6 comprises an electric heating part and a temperature monitoring and feedback control part, the control temperature range is 0-100 ℃, the oil well incoming liquid is controlled to enter from the part, and the temperature and the controlled amount are heated; the oil well liquid inlet pipeline 5 is also provided with a front sampling test port 15 positioned in front of the inlet end of the solid corrosion inhibitor evaluation system, the solid corrosion inhibitor evaluation system 2 comprises a cylinder 9, a placing cavity 10 arranged in the cylinder and used for placing the solid corrosion inhibitor, and three corrosion inhibitors arranged on the cylinder 9Corrosion coupon monitoring positions and two corrosion probe monitoring positions, wherein corrosion coupon monitoring devices 11 are installed at the three corrosion coupon monitoring positions, corrosion probe monitoring devices 12 are installed at the two corrosion probe monitoring positions, and solid corrosion inhibitors of different varieties and quantities are placed in the placing cavity 10; the liquid outlet system 3 comprises a liquid outlet pipeline 13 and a rear sampling test port 14 arranged on the liquid outlet pipeline, and when the liquid outlet system is installed, the front end of the cylinder 9 is hermetically connected with the incoming liquid pipeline 5 of the oil well, the rear end of the cylinder 9 is hermetically connected with the liquid outlet pipeline 13, namely the solid corrosion inhibitor evaluation system 2 and the incoming liquid treatment system 1 of the oil well and the solid corrosion inhibitor evaluation system 2 and the liquid outlet system 3 are hermetically connected with each other to form a whole set of sealed simulation system, the solid corrosion inhibitor 4 is placed at the inlet of the solid corrosion inhibitor evaluation system and can enable the incoming liquid of the oil well entering from the incoming liquid treatment system of the oil well to continuously and dynamically scour the solid corrosion inhibitor and then be output through the liquid outlet system 3, the liquid outlet pipeline 13 is connected with the next flow of field production, and the liquid for evaluation is returned to the field production system, and the iron ion content and the corrosion condition of the concentration of the corrosion inhibitor can be tested by taking liquid from the post-sampling test port 14.
Furthermore, the cylinder 9 is made of high-temperature-resistant quartz glass, incoming liquid of an oil well continuously enters and dynamically erodes the solid corrosion inhibitor, and the dissolution condition and corrosion inhibition performance evaluation of the solid corrosion inhibitor can be observed in real time through quartz glass melted by crystal; anticorrosion materials are arranged in the oil well incoming liquid treatment system 1, the solid corrosion inhibitor evaluation system 2 and the liquid outlet system 3, and specifically, anticorrosion materials are adopted for equipment parts in the oil well incoming liquid treatment system 1, the solid corrosion inhibitor evaluation system 2 and the liquid outlet system 3, which are in contact with produced liquid.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (7)
1. The on-line test device for evaluating the performance of the oil well solid corrosion inhibitor is characterized in that: the system comprises a solid corrosion inhibitor evaluation system (2) internally provided with a solid corrosion inhibitor (4), an oil well incoming liquid treatment system (1) connected to the inlet end of the solid corrosion inhibitor evaluation system and a liquid outlet system (3) connected to the outlet end of the solid corrosion inhibitor evaluation system, wherein the solid corrosion inhibitor evaluation system (2), the oil well incoming liquid treatment system (1) and the liquid outlet system (3) are hermetically connected with each other to form a whole set of sealed simulation system, and the solid corrosion inhibitor (4) is placed at the inlet of the solid corrosion inhibitor evaluation system and can enable incoming liquid of an oil well entering from the oil well incoming liquid treatment system to continuously and dynamically scour the solid corrosion inhibitor and then be output through the liquid outlet system (3).
2. The oil well solid corrosion inhibitor performance evaluation on-line test device according to claim 1, characterized in that: the oil well incoming liquid treatment system (1) comprises an oil well incoming liquid pipeline (5), a heating device (6) arranged in the oil well incoming liquid pipeline and used for heating the incoming liquid of the oil well, and a flow control device (7) arranged on the oil well incoming liquid pipeline and used for controlling the flow of the incoming liquid of the oil well.
3. The oil well solid corrosion inhibitor performance evaluation on-line test device according to claim 2, characterized in that: and a front sampling test port (15) is arranged on the oil well liquid inlet pipeline (5).
4. The oil well solid corrosion inhibitor performance evaluation on-line test device according to claim 1, 2 or 3, characterized in that: the solid corrosion inhibitor evaluation system (2) comprises a barrel body (9), a placing cavity (10) which is arranged in the barrel body and used for placing the solid corrosion inhibitor, at least one corrosion coupon monitoring position and at least one corrosion probe monitoring position which are arranged on the barrel body (9), wherein a corrosion coupon monitoring device (11) is installed at each corrosion coupon monitoring position, and a corrosion probe monitoring device (12) is installed at each corrosion probe monitoring position.
5. The oil well solid corrosion inhibitor performance evaluation on-line test device according to claim 4, characterized in that: the cylinder (9) is made of quartz glass.
6. The oil well solid corrosion inhibitor performance evaluation on-line test device according to claim 1, 2, 3 or 5, characterized in that: the liquid outlet system (3) comprises a liquid outlet pipeline (13) and a rear sampling test port (14) arranged on the liquid outlet pipeline.
7. The oil well solid corrosion inhibitor performance evaluation on-line test device according to claim 6, characterized in that: and anti-corrosion materials are arranged in the oil well incoming liquid treatment system (1), the solid corrosion inhibitor evaluation system (2) and the liquid outlet system (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122393477.9U CN216350573U (en) | 2021-09-30 | 2021-09-30 | Oil well solid corrosion inhibitor performance evaluation on-line test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122393477.9U CN216350573U (en) | 2021-09-30 | 2021-09-30 | Oil well solid corrosion inhibitor performance evaluation on-line test device |
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| Publication Number | Publication Date |
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| CN216350573U true CN216350573U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122393477.9U Active CN216350573U (en) | 2021-09-30 | 2021-09-30 | Oil well solid corrosion inhibitor performance evaluation on-line test device |
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2021
- 2021-09-30 CN CN202122393477.9U patent/CN216350573U/en active Active
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