CN201765221U - On-line monitoring device for oil production sewage - Google Patents

Abstract

An online monitoring device for oilfield produced wastewater comprises a first control valve and a second control valve. An outlet end of the first control valve is communicated to a sampling tank via a pipeline while an inlet end of the first control valve is communicated with a drain pipe, an inlet end of the second control valve is communicated with a water pump mounted in the sampling tank while an outlet end of the second control valve is communicated with the drain pipe, an oil-in-water analyzer, a suspension analyzer, a silicon analyzer, a COD analyzer, a dissolved oxygen analyzer, a hardness measurement instrument and a PH measurement instrument are mounted in a monitoring room provided with the sampling tank, sampling heads of all the analyzer and instruments are communicated with the sampling tank via sampling pipes, and the analyzers and the instruments sample once per four minutes. Further, monitored data is uploaded to relative departments such as a multi-purpose station, an environmental protection department, oilfield head offices and the like in a wireless or wire form, thereby bringing convenience to take measures in time to treat wastewater properly and guarantee that quality of oilfield reuse water or exterior drainage water meets environment-friendly requirements, simultaneously, reducing labor intensity, saving wastewater treatment cost, and leading water quality to meet standards of water for steam-injection boilers when in heavy oil production.

Description

On-line monitoring device for oil production sewage

technical field

The utility model relates to an online monitoring device for oil extraction sewage, in particular to an online measurement device for multiple indicators such as suspended solids, COD, PH, hardness, silicon dioxide, etc. in the oil extraction sewage, so as to facilitate the treatment of sewage. It is especially suitable for detection and monitoring equipment of gas injection boiler water quality during the production of heavy oil wells.

Background technique

The oil field is a major user of water, and realizing the purification and reuse of oilfield mining sewage has multiple benefits such as society, economy, and environmental protection. Generally, the combined stations of oilfields are units with relatively concentrated sewage treatment volume. At present, the water quality monitoring after treatment adopts the method of manual testing, and samples are taken every 4 hours. Therefore, there are problems such as untimely monitoring, large errors in laboratory test results, and lagging treatment. Laboratory testing is labor-intensive and low-efficiency. Especially in the exploitation of heavy oil wells, it is necessary to inject high-temperature and high-pressure steam into the oil wells. At this time, the water for the gas injection boilers is taken from the treated water of the joint station for reuse, so as to save water and promote the circular economy of the oil field. realization and sustainable development. Obviously, this type of reused water must meet certain water quality standards, and manual testing cannot meet the requirements of high-yield and efficient development of production.

Utility model content

The technical problem to be solved by the utility model is to provide an automatic, real-time and accurate online monitoring device for oil extraction sewage, which can reduce the labor intensity of sewage detection, save sewage treatment operation costs, and improve economic efficiency.

The utility model oil extraction sewage online monitoring device includes first and second control valves, the outlet end of the first control valve is connected with the sampling pool through the pipeline, and the inlet end is connected with the drain pipe; the inlet end of the second control valve is connected with the The water pump in the sampling pool is connected, and its outlet is connected to the drain pipe; the monitoring room with the sampling pool is equipped with an oil analyzer in water, a suspended matter analyzer, a silicon analyzer, a COD analyzer, a dissolved oxygen analyzer, and a hardness tester. Instrument and PH measuring instrument, whose sampling head is connected with the sampling pool through the sampling tube; monitoring of oil in water analyzer, suspended solids analyzer, silicon analyzer, COD analyzer, dissolved oxygen analyzer, hardness measuring instrument and PH measuring instrument After the data is collected and analyzed by the data acquisition controller, it is transmitted to the terminals of several functional departments through wireless or wired.

The utility model relates to an online monitoring device for oil extraction sewage, wherein the first and second control valves are electromagnetic valves electrically connected to a data acquisition controller.

The utility model relates to an online monitoring device for oil production sewage, wherein the sampling pipe is located at the upper part of the sampling pool.

The utility model is an online monitoring device for oil extraction sewage, wherein the oil analyzer in water is ENVIROFLU-HC type, the suspended matter analyzer is SOLITAX type, the silicon analyzer is SLC-1625 type, the COD analyzer is CODmax type, and the dissolved oxygen analyzer is LOD Type, the hardness measuring instrument is APA6000 type, and the PH measuring instrument is PHD differential PH type.

The utility model adopts domestic and foreign advanced and reliable online monitoring instruments for oil production sewage, and builds an online monitoring station near the reuse or external drainage pipe of the joint station, and collects water samples from the reuse or external drainage pipe into the monitoring room through the pipeline In the sampling pool, the sampling probes or sensors of various monitoring and analysis instruments are sampled from the sampling pool every 4 minutes for monitoring; the monitoring data is collected by the data acquisition system for research and analysis, and at the same time through wireless (GPRS) or wired (TCP/ IP) Upload the data to the terminals of relevant departments such as the Union Station, Environmental Protection Section, Oilfield Corporation, etc., so as to take timely measures to properly treat the sewage, ensure the quality of oilfield reuse or external drainage, and make sewage treatment meet environmental protection requirements . At the same time, it reduces labor intensity, saves operating costs of sewage treatment, and makes it meet the standards set by the oil field, especially the water quality standard for gas injection boiler water in heavy oil production, ensuring the economic benefits of heavy oil production.

Description of drawings

Fig. 1 is a schematic block diagram of the principle of the utility model oil production sewage online monitoring device.

Detailed ways

It can be seen from Fig. 1 that the utility model oil production sewage online monitoring device includes first and second control valves 1 and 2, the outlet end of the first control valve 1 is connected with the sampling pool 3 through a pipeline, and the joint of the inlet end and the oilfield sewage treatment The reuse or external drainage pipe 4 in the station is connected; the inlet end of the second control valve 2 is connected with the water pump 5 arranged in the sampling pool 3, and its outlet is connected with the reuse or external drainage pipe 4; The monitoring room is equipped with an oil-in-water analyzer 6, a suspended solids analyzer 7, a silicon analyzer 8, a COD analyzer 9, a dissolved oxygen analyzer 10, a hardness measuring instrument 11 and a PH measuring instrument 12, and their sampling heads pass the sampling The pipe 13 communicates with the sampling pool 3; the monitoring data of the oil analyzer 6 in water, the suspended solids analyzer 6, the silicon analyzer 8, the COD analyzer 9, the dissolved oxygen analyzer 10, the hardness measuring instrument 11 and the pH measuring instrument 12 are passed through the data After collection and analysis by the collection controller 14, it is transmitted to the terminals 15 of several functional departments through wireless or wired.

Wherein, the first and second control valves 1 and 2 are electromagnetic valves electrically connected to the data acquisition controller 14, which can more conveniently control the interval time of water sampling. The sampling pipe 13 is located at the top of the sampling pool 3, which is more conducive to the detection of suspended solids in water.

The ENVIROFLU-HC oil-in-water analyzer here adopts the fluorescence method to measure the concentration of polycyclic aromatic hydrocarbons in water, so as to determine the content of oil in water. The SOLITAX Suspended Matter Analyzer uses an infrared light detector and a counter to detect and record the number of suspended particles in the water. The SLC-1625 silicon analyzer uses molybdenum blue analysis method to measure the content of silicon dioxide in water. The CODmax COD analyzer uses the potassium dichromate method to detect the COD value in water. The LOD dissolved oxygen analyzer adopts the Clark polarographic method composed of three sensors for measurement. The APA6000 hardness tester adopts the colorimetric method for detection. The PHD differential PH type PH measuring instrument uses three measuring electrodes, and selects the differential value of the pH value measured by the measuring electrode and the standard electrode relative to the background electrode of the solution. The above-mentioned instruments and the data acquisition controller 14 are existing products both at home and abroad, and the terminal 15 can be a computer, a telephone and other devices with display or voice functions.

From the reuse or external drainage pipe 4 of the final stage of the sewage treatment joint station in the oil field, the treated water is introduced into the sampling pool 3 through the controlled first electromagnetic control valve 1, and the sampling heads or sensors of various analysis and detection instruments Water is introduced into the container in the instrument through the sampling pipe 13 for measurement, and various monitoring data are collected and analyzed by the data acquisition controller 14, and then transmitted to several functional departments through wireless (GPRS) or wired (TCP/IP) The terminals 15, such as sewage treatment joint station, environmental protection department, oilfield corporation and other units, among which the most important thing is to quickly transmit to the joint station, so as to take measures for sewage treatment in time, so that the treated sewage can reach the standard, especially to ensure thick The quality of water reused by gas injection boilers in oil production promotes high-quality and high-yield oilfields. The data collection controller 14, the terminal machine 15 and the wireless or wired transmission device are all prior art. The water in the sampling pool 3 can be sent back to the drain pipe 4 through the water pump 5 and the second electromagnetic control valve 2 arranged in the pool.

Claims (4)

1. an oil extraction-generated waste water on-Line Monitor Device is characterized in that comprising first, second operation valve (1,2), and described first operation valve (1) endpiece is communicated with sampling pond (3) by pipeline, and its entrance point is communicated with drainpipe (4); The entrance point of described second operation valve (2) water pump (5) interior with being placed in described sampling pond (3) is communicated with, and its endpiece is communicated with described drainpipe (4); Oil analysis instrument (6) in the water, suspension analyser (7), silicon meter (8), COD analyser (9), dissolved oxygen analytic instrument (10), qualimeter (11) and PH measuring instrument (12) are housed in the Control Room that is provided with described sampling pond (3), and the sampling head of oil analysis instrument (6), suspension analyser (7), silicon meter (8), COD analyser (9), dissolved oxygen analytic instrument (10), qualimeter (11) and PH measuring instrument (12) is communicated with described sampling pond (3) by stopple coupon (13) in the described water; The Monitoring Data of oil analysis instrument (6), suspension analyser (7), silicon meter (8), COD analyser (9), dissolved oxygen analytic instrument (10), qualimeter (11) and PH measuring instrument (12) is after data acquisition controller (14) is gathered and analyzed, by wireless or wired terminating machine (15) that sends several functional departments in the described water.

2. oil extraction-generated waste water on-Line Monitor Device according to claim 1 is characterized in that the solenoid valve of described first, second operation valve (1,2) for being electrically connected with described data acquisition controller (14).

3. oil extraction-generated waste water on-Line Monitor Device according to claim 1 and 2 is characterized in that described stopple coupon (13) is positioned at top, described sampling pond (3).

4. oil extraction-generated waste water on-Line Monitor Device according to claim 3, it is characterized in that oil analysis instrument (6) is the ENVIROFLU-HC type in the described water, described suspension analyser (7) is the SOLITAX type, described silicon meter (8) is the SLC-1625 type, described COD analyser (9) is the CODmax type, described dissolved oxygen analytic instrument (10) is the LOD type, and described qualimeter (10) is the APA6000 type, and described PH measuring instrument (11) is a PHD difference PH type.

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