CN215756776U - Intelligent oil well acidification flowback fluid closed treatment device - Google Patents
Intelligent oil well acidification flowback fluid closed treatment device Download PDFInfo
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- CN215756776U CN215756776U CN202121643076.8U CN202121643076U CN215756776U CN 215756776 U CN215756776 U CN 215756776U CN 202121643076 U CN202121643076 U CN 202121643076U CN 215756776 U CN215756776 U CN 215756776U
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Abstract
The utility model relates to the technical field of oil well production, in particular to an intelligent oil well acidification flowback fluid sealing treatment device. The device comprises a returned liquid collecting system, a returned liquid alkali-adding treatment system, a neutralization system and a recovery system. By adopting the device, all treatment processes are carried out in a pipeline or a closed environment, so that the pollution of the volatile matters in the returned liquid to the environment is avoided; meanwhile, the treated returned liquid is directly conveyed to a destination through a pipeline, so that time and labor are saved. The device has the advantages of simple structure, easy assembly, low investment cost and easy popularization and application.
Description
Technical Field
The utility model relates to the technical field of oil well production, in particular to an intelligent oil well acidification flowback fluid sealing treatment device.
Background
The technologies of operation acidification, fracturing, sand prevention and the like are used as main measures for increasing the yield and the injection, a large amount of residual liquid after construction needs to be discharged back to the ground, and acid pickling residual liquid treatment are needed.
At present, the treatment method of the flowback liquid is that the flowback liquid is discharged into an acid liquid pool firstly, then is collected by a self-priming tank car and is transported to a waste liquid treatment station for treatment. The disadvantages are as follows: firstly, as the flowback liquid of the operation well has the characteristics of large acidity, more suspension, high mineralization and the like, according to the experience, the flowback liquid with small pH value and strong acidity enters the production oil collection flow from the shaft, so that crude oil pollution and corrosion flow can be caused; secondly, the crude oil dehydration of the system is difficult, the water quality is poor, the settling time of the settling tank is increased, and the normal operation of the crude oil and water treatment system is influenced; thirdly, the treatment cost is high, and secondary pollution and various potential safety hazards exist.
Chinese utility model patent CN208151043U discloses a waste gas and waste liquid treatment device for oil well acidizing and fracturing measures, which mainly comprises a shell, a treatment tank, a waste gas retreatment device, an air pump, a pressure pump, an alkali liquor storage tank, a waste tank, a control keyboard and a power supply device; the shell comprises a placing cavity, a processing cavity and a movable cavity, the placing cavity is positioned at the right side position inside the shell, the processing cavity is positioned at the left side position inside the shell, and the movable cavity is positioned below the processing cavity; the treatment tank is embedded in the treatment cavity; the exhaust gas aftertreatment device is arranged on the upper surface of the shell; the air pump, the pressure pump and the alkali liquor storage box are arranged inside the placing cavity; the waste bin is movably arranged in the movable cavity. Most parts of the device are placed inside the shell, so that the device is not convenient to detect and maintain.
Chinese utility model patent CN2659880 discloses a processing apparatus of waste liquid, and the device is with reaction tank, neutralization liquid medicine pond, the case of intaking, connecting tube and switch board all install on the platform, and the cost is higher.
Therefore, at present, an automatic treatment device for closed oil well pickling residual liquid is needed, and the urgent needs of cost reduction, efficiency improvement and safe and clean production are met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an intelligent oil well acidification flowback fluid sealing treatment device, which is used for directly sealing and entering an oil pipeline after an oil well acid-washing flowback fluid is qualified through acid-base neutralization treatment at a well head, so that the outward transportation treatment of the flowback acid fluid and environmental pollution are avoided, the whole process can be automatically treated, a large amount of manual labor is saved, and the production cost is reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an intelligent oil well acidification flowback fluid closed treatment device, which comprises a flowback fluid collection system, a flowback fluid alkali-adding treatment system, a neutralization system and a recovery system, wherein the flowback fluid alkali-adding treatment system is connected with the neutralization system; the returned liquid collecting system comprises a production valve, a sleeve pressure taking valve, a reflux sleeve valve, a nozzle sleeve double-pipe joint, a warm-pressing transmitter, a liquid outlet connecting valve, a filtering separation bag, an acid-resistant flowmeter, a check valve, a connecting pipe, a control front valve, a pH detector and a control rear valve; the oil nozzle sleeve double-pipe joint is connected with an oil well mouth through a pipeline, and a production valve is arranged on the pipeline; the oil nozzle sleeve is sequentially connected with a temperature and pressure transmitter, a liquid outlet connecting valve, a filtering and separating bag, an acid-resistant flowmeter, a check valve, a front control valve, a pH detector and a rear control valve.
The returned liquid alkali adding system comprises an alkali liquid pool, an alkali liquid outlet valve, an alkali liquid flowmeter, a pump connecting pipe, an alkali metering pump, a pump outlet pipe, a pressure transmitter and a stop valve which are connected in sequence, wherein the stop valve is connected with a control back valve in the returned liquid collecting system.
The neutralization system comprises a static liquid mixer, a neutralization liquid front valve, a pH detector, a neutralization liquid rear valve and a three-way valve which are connected in sequence; the static liquid mixer is also respectively connected with a stop valve in the returned liquid alkali-adding system and a control back valve in the returned liquid collecting system.
The recovery system comprises a liquid inlet communicating valve, a liquid return communicating valve, a sleeve pressure valve, a return sleeve valve and a movable joint; the liquid inlet communicating valve is respectively connected with the joint of the oil nozzle sleeve double pipe and one end of a three-way valve in the neutralization system; the liquid return communication valve is respectively connected with the movable joint and one end of a three-way valve in the neutralization system, and the movable joint is connected with a return sleeve valve; the reflux sleeve valve and the sleeve pressure-taking valve are respectively connected with the inlet; the system is controlled by an intelligent control cabinet.
Furthermore, a sampling valve is arranged between the temperature and pressure transmitter and the liquid outlet connecting valve.
Furthermore, the returned liquid collecting system also comprises a bypass pipe and a bypass valve; one end of the bypass pipe is arranged between the check valve and the front control valve, the other end of the bypass pipe is arranged between the rear control valve and the stop valve, and the bypass valve is arranged on the bypass pipe.
Further, the neutralization system also comprises a neutralization bypass pipe and a neutralization bypass valve; one end of the neutralization liquid bypass pipe is arranged between the static liquid mixer and the neutralization liquid front valve; the other end is arranged between the neutralizing liquid rear valve and the three-way valve.
Furthermore, a rear sampling valve is arranged on a pipeline connecting the liquid inlet communicating valve and the three-way valve.
Furthermore, the warm-pressure transmitter and the liquid outlet connecting valve, the oil nozzle sleeve double-pipe joint and the liquid inlet communicating valve, and the liquid return communicating valve and the return casing valve are connected by high-pressure hoses.
Compared with the prior art, the utility model has the following beneficial effects:
by adopting the device, parameters such as the pressure, the flow, the temperature, the pH value before and after treatment of the returned acid liquor and the like can be remotely transmitted to the Internet at any time, so that intelligent management can be realized, and a large amount of labor can be saved; by adopting the device, all treatment processes are carried out in a pipeline or a closed environment, so that the pollution of the volatile matters of the returned liquid to the environment is avoided; meanwhile, the treated returned liquid is directly conveyed to a destination through a pipeline, so that time and labor are saved.
The device has the advantages of simple structure, easy assembly, low investment cost and easy popularization and application.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent oil well acidizing flow-back fluid sealing treatment device according to embodiment 1 of the utility model.
1. Well head, 2 production valve, 3 casing pressure valve, 4 return casing valve, 5 oil nozzle casing double pipe joint, 6 warm pressure transmitter, 7 outlet high pressure hose, 8 front sampling valve, 9 outlet connection valve, 10 filtering separation bag, 11 acid-proof flowmeter, 12 single flow valve, 13 connecting pipe, 14 control front valve, 15 return liquid pH detector, 16 control back valve, 17 bypass pipe, 18 bypass valve, 19T pipe, 20 static liquid mixer, 21 alkali liquid pool, 22 alkali liquid outlet valve, 23 alkali liquid flowmeter, 24 pump connecting pipe, 25 alkali metering pump, 26 pump outlet pipe, 27 pump outlet pressure transmitter, 28 stop valve, 29 neutralization liquid front valve, 30 pH detector, 31 neutralization liquid back valve, 32 neutralization liquid bypass pipe, 33 neutralization liquid bypass valve, 34 neutral liquid bypass valve, 34 three-way valve, 35. Back sampling valve, 36, liquid inlet communicating valve, 37, liquid inlet high-pressure hose, 38, liquid return communicating valve, 39, liquid return high-pressure hose, 40, intelligent control cabinet, 41, movable joint.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1
As shown in fig. 1, the intelligent oil well acidification backflow fluid sealing treatment device comprises a backflow fluid collection system, a backflow fluid alkali treatment system, a neutralization system and a recovery system, wherein the systems are controlled by an intelligent control cabinet 40.
The returned liquid collecting system comprises a production valve 2, a sleeve pressure taking valve 3, a return sleeve valve 4, a choke sleeve double-pipe joint 5, a warm-pressing transmitter 6, a liquid outlet high-pressure hose 7, a front sampling valve 8, a liquid outlet connecting valve 9, a filtering and separating bag 10, an acid-proof flowmeter 11, a check valve 12, a connecting pipe 13, a control front valve 14, a returned liquid pH detector 15, a control rear valve 16, a bypass pipe 17, a bypass valve 18 and a three-way pipe 19; the choke sleeve double pipe joint 5 is connected with the oil well mouth 1 through a pipeline, and a production valve 2 is arranged on the pipeline; the oil nozzle sleeve 5 is sequentially connected with a warm-pressing transmitter 6, a liquid outlet connecting valve 9, a filtering separation bag 10, an acid-proof flowmeter 11, a check valve 12, a connecting pipe 13, a front control valve 14, a back discharge liquid pH detector 15 and a rear control valve 16. The bypass pipe 17 has one end provided between the check valve 12 and the pre-control valve 14 and the other end provided between the post-control valve 16 and the stop valve 28, and the bypass valve 18 is provided on the bypass pipe 17. The control back valve 16 is connected with a stop valve 28 and a static liquid mixer 20 through a tee 19 respectively. The warm-pressing transmitter 6 is connected with the liquid outlet connecting valve 9 through a liquid outlet high-pressure hose 7, and a sampling valve 8 is arranged between the warm-pressing transmitter 6 and the liquid outlet connecting valve 9.
The oil well acidification well opening pumped return liquid passes through a well mouth 1, a production valve 2, a sleeve valve 3, a return sleeve valve 4, a choke sleeve double-pipe joint 5, a temperature and pressure transmitter 6, a liquid outlet high-pressure hose 7, a front sampling valve 8, a liquid outlet connecting valve 9, a filtering and separating bag 10, an acid-resistant flowmeter 11, a check valve 12, a connecting pipe 13, a control front valve 14, a return liquid pH detector 15, a control rear valve 16, a bypass pipe 17, a bypass valve 18 and a three-way pipe 19. When the detection data of the backflow liquid pH detector 15 is unstable, a detection head needs to be taken out for cleaning, the bypass valve 18 is opened, the front control valve 14 and the rear control valve 16 are closed, and backflow liquid enters the bypass pipe 17 and flows to the three-way pipe 19 through the bypass valve 18. The temperature and pressure transmitter 6 collects the temperature and pressure of the return fluid of the remote wellhead 1 to a monitoring center to monitor whether the production is normal. The double pipe joints 5 of the oil nozzle sleeve are integrated with liquid outlet and liquid inlet and are arranged in the oil nozzle sleeve behind the production valve 2. The front sampling valve 8 is used for emptying and sampling to observe the condition of the amount of the backflow liquid, and the pH of the backflow liquid is manually detected and compared for confirmation.
The returned liquid alkali-adding treatment system comprises an alkali liquid pool 21, an alkali liquid outlet valve 22, an alkali liquid flow meter 23, a pump connecting pipe 24, an alkali metering pump 25, a pump outlet pipe 26, a pump outlet pressure transmitter 27 and a stop valve 28 which are connected in sequence. The shut-off valve 28 is connected to the post-control valve 16 in the return liquid collection system.
The concentration and the addition of the alkali liquor are prepared according to the liquid return amount and are arranged in an alkali liquor pool 21. When the pH value of the flowback liquid is detected to be less than 6 by the pH detector 15, the alkali metering pump 25 is started to add or subtract liquid by the intelligent control cabinet 40, and the alkali liquor flows from the alkali liquor pool 21 to the stop valve 28 through the alkali liquor outlet valve 22, the alkali liquor flowmeter 23, the pump connecting pipe 24, the alkali metering pump 25, the pump outlet pipe 26 and the pump outlet pressure transmitter 27. The alkali liquor flow meter 23 measures the amount of the added alkali liquor, and the added amount can be compared and recorded through the alkali metering pump 25.
The neutralization system comprises a static liquid mixer 20, a neutralization liquid front valve 29, a mixed liquid pH detector 30, a neutralization liquid rear valve 31, a neutralization liquid bypass pipe 32, a neutralization liquid bypass valve 33 and a three-way valve 34 which are sequentially connected; the static liquid mixer 20 is also connected to a stop valve 28 in the returned liquid caustic soda system and a control back valve 16 in the returned liquid collection system, respectively. A neutralization liquid bypass pipe 32 is provided at one end between the static liquid mixer 20 and the neutralization liquid pre-valve 29; the other end is provided between the neutralization liquid post-valve 31 and the three-way valve 34, and the neutralization liquid bypass valve 33 is provided on the neutralization liquid bypass pipe 32.
The return liquid flows from a well head 1 to a three-way pipe 19, the alkali liquid flows from an alkali liquid pool 21 to a stop valve 28, the return liquid and the alkali liquid are mixed in the three-way pipe 19 and then enter a static liquid mixer 20 to undergo acid-alkali neutralization reaction, and the mixed liquid after the reaction flows through a neutralization liquid front valve 29, a mixed liquid pH detector 30, a neutralization liquid rear valve 31, a neutralization liquid bypass pipe 32, a neutralization liquid bypass valve 33 and a three-way valve 34. When the detection data of the mixed liquid pH detector 30 is unstable, a probe needs to be taken out for cleaning, the neutralizing liquid bypass valve 33 is opened, the neutralizing liquid front valve 29 and the neutralizing liquid rear valve 31 are closed, and the mixed liquid enters the neutralizing liquid bypass pipe 32 and flows to the three-way valve 34 through the neutralizing liquid bypass valve 33. And detecting the reacted mixed liquor by an acid liquor pH detector 30, if the pH value is more than 6, closing a three-way valve 34, and enabling the mixed liquor to enter a liquid inlet recovery system. If the pH value is less than 6, the three-way valve 34 is opened, the mixed liquid enters the recovery system, and the alkali metering pump 25 discharges the liquid.
The recovery system comprises a sampling valve 35, a liquid inlet communicating valve 36, a liquid inlet high-pressure hose 37, a liquid return communicating valve 38, a liquid return high-pressure hose 39, a movable joint 41, a sleeve pressure sampling valve 3 and a return sleeve valve 4; the liquid inlet communicating valve 36 is respectively connected with the oil nozzle sleeve double-pipe joint 5 and one end of the three-way valve 34 in the neutralization system; the liquid return communication valve 38 is connected with a movable joint 41 through a liquid return high-pressure hose 39, and the other end of the liquid return communication valve is connected with one end of a three-way valve 34 in the neutralization system; the movable joint 41 is connected with the return sleeve valve 4; the reflux casing valve 4 and the casing pressure sampling valve 3 are respectively connected with the inlet 1. A rear sampling valve 35 is arranged on a pipeline connecting the liquid inlet communicating valve 36 and the three-way valve 34.
The choke sleeve double-pipe joint 5 is connected with the liquid inlet communicating valve 36 by a liquid inlet high-pressure hose 37, and the liquid return communicating valve 38 is connected with the return casing valve 4 by a liquid return high-pressure hose 39.
And (3) closing the three-way valve 34 when the PH value of the mixed liquor is greater than 6, and enabling the mixed liquor to flow from the three-way valve 34 through the sampling valve 35, the liquid inlet communication valve 36 and the liquid inlet high-pressure hose 37 to the oil nozzle sleeve double-pipe joint 5 to enter an oil pipeline for closed collection and transportation. And (3) opening the three-way valve 34 when the pH value of the mixed liquor is less than 6, and allowing the mixed liquor to flow through the three-way valve 34, the liquid return communication valve 38 and the liquid return high-pressure hose 39 to the return casing valve 4 and enter the wellhead 1 for closed circulation treatment. And the rear sampling valve 35 is used for emptying, sampling and observing the condition of the amount of the mixed liquid, and manually detecting the pH of the mixed liquid for comparison and confirmation. And a pressure changer is arranged on the casing pressure-taking valve 3, casing pressure is remotely collected, and the production condition of the wellhead 1 is observed.
The device is installed and used in a certain oil well from 27 days in 1 month to 10 days in 2 months in 2019, so that the acidized return fluid of the oil well directly enters a production pipeline of the well in a sealed manner after being neutralized and qualified in a well head, and the outward transportation and the environmental pollution of the acidized return fluid are avoided. The production valve 2 at the well mouth 1 is connected with an oil nozzle sleeve double-pipe joint 5, the inner pipe of the oil nozzle sleeve double-pipe joint is connected with an oil nozzle hole, the oil well return fluid flows through a return fluid PH detector through the inner pipe, when the detected pH value of the return fluid is less than 6, the intelligent control cabinet 40 starts the alkali metering pump 25 to add alkali liquor according to the specific pH value, the return fluid and the alkali liquor enter the static liquid mixer 20 for mixing reaction, the mixed liquor after the reaction passes through the mixed liquor PH detector, when the detected pH value of the mixed liquor is still less than 6,intelligent controlThe three-way valve 34 is opened under the control of the cabinet making 40, and the mixed liquid flows through the liquid return communication valve 38 of the three-way valve 34 and the liquid return high-pressure hose 39 to the return casing valve 4 and enters the wellhead 1 for closed circulation treatment. When the pH value of the detected mixed liquor is greater than 6, the three-way valve 34 is closed, and the mixed liquor enters the oil pipeline for closed gathering and transportation from the three-way valve 34, the sampling valve 35, the liquid inlet communicating valve 36 and the liquid inlet high-pressure hose 37 to the oil nozzle sleeve double-pipe joint 5. After the pH of the flowback liquid and the mixed liquid is continuously more than 6 for 3 days, the device is dismantled, the oil well is shifted to normal production, the closed gathering rate is 100 percent, the acid discharge and transportation cost is reduced, and secondary environmental pollution is avoided.
The device is installed on a well opening of a certain pump testing pressure pickling operation well, the pump testing pressure pickling operation is started in 9, 10 and 2020, and the composite acid liquid with 20% of concentration is replaced by 8m of composite acid liquid in 14 and 9 days3And a composite acid solution 22m with a forward extrusion concentration of 20%3And acidizing the horizon S2. The acid is reversely discharged by the mixed gas water of a cement truck and a pressure fan in 9 months and 15 days, and the produced water of the local block containing 2 percent of clay stabilizer-2 is matched with 160m of the produced water of the oil field at the inlet3And 165m of residual acid solution at the outlet3And the outlet enters the tank, and the pump is stopped when the water quality of the inlet and the outlet is consistent after mixed drainage and well washing. The well is opened in 17 days in 9 months, and the daily liquid yield is 15m3And contains 100 percent of water. The device is installed in place in 17 days after 9 months, and operates synchronously with the well opening of an oil well. In order to avoid influencing the stability of oil delivery of the gathering and transportation system, the liquid treated by the device is not fed into an oil collecting flow of the oil well, but is connected into a liquid discharge pool and recovered by a tank car. Opening the well to 9 months and 30 days30 kg of alkali is added, 600 kg of water is added, alkali liquor with the alkali concentration of 5% is injected into the liquid inlet flow of the oil well by starting a pump through an alkali metering pump 25 under the instruction of a flowback liquid pH detector 15, and acid-alkali neutralization reaction is carried out in a static liquid mixer 20. The method is operated on site in 17 days after 9 months to 29 days after 9 months, the pH value of the return liquid at the wellhead 1 is increased from 5.5 to 7, the pH value detected by the mixed liquid pH detector 30 is more than or equal to 7, the closed gathering and transporting rate is 100 percent, the transportation cost of an average single well is saved by 2 ten thousand yuan, the potential safety hazards and the environmental protection hazards are eliminated, the pipeline equipment and the crude oil are protected, the pollution-free closed gathering and transporting is realized, the vehicle is carried along with the well, the operation is simple and convenient, the green technology is enriched, and the blank of the residual acid treatment technology is filled.
All parts and parts which are not discussed in the utility model and the connection mode of all parts and parts in the application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Claims (6)
1. An intelligent oil well acidification flowback fluid closed treatment device is characterized by comprising a flowback fluid collection system, a flowback fluid alkali-adding treatment system, a neutralization system and a recovery system; the system is controlled by an intelligent control cabinet;
the returned liquid collecting system comprises a production valve, a sleeve pressure taking valve, a reflux sleeve valve, a nozzle sleeve double-pipe joint, a warm-pressing transmitter, a liquid outlet connecting valve, a filtering separation bag, an acid-resistant flowmeter, a check valve, a connecting pipe, a control front valve, a pH detector and a control rear valve; the oil nozzle sleeve double-pipe joint is connected with an oil well mouth through a pipeline, and a production valve is arranged on the pipeline; the oil nozzle sleeve is sequentially connected with a temperature and pressure transmitter, a liquid outlet connecting valve, a filtering and separating bag, an acid-resistant flowmeter, a check valve, a front control valve, a pH detector and a rear control valve;
the returned liquid alkali adding system comprises an alkali liquid pool, an alkali liquid outlet valve, an alkali liquid flowmeter, a pump connecting pipe, an alkali metering pump, a pump outlet pipe, a pressure transmitter and a stop valve which are connected in sequence, wherein the stop valve is connected with a control back valve in the returned liquid collecting system;
the neutralization system comprises a static liquid mixer, a neutralization liquid front valve, a pH detector, a neutralization liquid rear valve and a three-way valve which are connected in sequence; the static liquid mixer is also respectively connected with a stop valve in the returned liquid alkali-adding system and a control back valve in the returned liquid collecting system;
the recovery system comprises a liquid inlet communicating valve, a liquid return communicating valve, a sleeve pressure valve, a return sleeve valve and a movable joint; the liquid inlet communicating valve is respectively connected with the joint of the oil nozzle sleeve double pipe and one end of a three-way valve in the neutralization system; the liquid return communication valve is respectively connected with the movable joint and one end of a three-way valve in the neutralization system, and the movable joint is connected with a return sleeve valve; the reflux casing valve and the casing pressure-taking valve are respectively connected with the inlet.
2. The intelligent oil well acidizing flowback fluid sealing treatment device of claim 1, wherein a sampling valve is arranged between the temperature and pressure transmitter and the liquid outlet connecting valve.
3. The intelligent well acidized flowback fluid sealing treatment device according to claim 1, wherein the flowback fluid collection system further comprises a bypass pipe and a bypass valve; one end of the bypass pipe is arranged between the check valve and the front control valve, the other end of the bypass pipe is arranged between the rear control valve and the stop valve, and the bypass valve is arranged on the bypass pipe.
4. The intelligent well acidized flowback fluid containment treatment device of claim 1, wherein the neutralization system further comprises a neutralization bypass pipe, a neutralization bypass valve; one end of the neutralization liquid bypass pipe is arranged between the static liquid mixer and the neutralization liquid front valve; the other end is arranged between the neutralizing liquid rear valve and the three-way valve.
5. The intelligent closed treatment device for the acidized flowback fluid of the oil well as the treatment method of the acidized flowback fluid of the oil well are characterized in that a rear sampling valve is arranged on a pipeline, connected with the three-way valve, of the liquid inlet communication valve.
6. The intelligent oil well acidification flowback fluid sealing treatment device of claim 1, wherein the temperature and pressure transmitter and the liquid outlet connecting valve, the choke sleeve double pipe joint and the liquid inlet communicating valve, and the liquid return communicating valve and the return sleeve valve are connected by high-pressure hoses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121643076.8U CN215756776U (en) | 2021-07-19 | 2021-07-19 | Intelligent oil well acidification flowback fluid closed treatment device |
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| CN202121643076.8U CN215756776U (en) | 2021-07-19 | 2021-07-19 | Intelligent oil well acidification flowback fluid closed treatment device |
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| CN215756776U true CN215756776U (en) | 2022-02-08 |
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| CN202121643076.8U Active CN215756776U (en) | 2021-07-19 | 2021-07-19 | Intelligent oil well acidification flowback fluid closed treatment device |
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