CN108007868B - Device and method for detecting water content of natural gas underground gas storage gas production well - Google Patents
Device and method for detecting water content of natural gas underground gas storage gas production well Download PDFInfo
- Publication number
- CN108007868B CN108007868B CN201711374848.0A CN201711374848A CN108007868B CN 108007868 B CN108007868 B CN 108007868B CN 201711374848 A CN201711374848 A CN 201711374848A CN 108007868 B CN108007868 B CN 108007868B
- Authority
- CN
- China
- Prior art keywords
- gas
- water content
- detecting
- detection
- branch line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007789 gas Substances 0.000 title claims abstract description 339
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 158
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 148
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 115
- 239000003345 natural gas Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 173
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 83
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 15
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 210000002310 elbow joint Anatomy 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention relates to a device and a method for detecting the water content of a gas production well of a natural gas underground gas storage. The device for detecting the water content of the gas production well of the natural gas underground gas storage comprises an automatic wavelength detector, a water content detection analyzer, a gas production pipeline, a timer, a flow sensor and a data acquisition processing unit; the gas production pipeline is connected with a gas production well, and is provided with a gas circuit main valve for controlling whether natural gas enters the gas production pipeline or not; the air inlet branch line is provided with a timer and a flow sensor, the timer is used for recording the time of the water content detection analyzer for detecting the natural gas, and the flow sensor is used for detecting the flow of the natural gas entering the water content detection analyzer; the water-containing detection analyzer is internally provided with anhydrous copper sulfate as a detection reagent, and the automatic wavelength detector is used for detecting the wavelength change of the detection reagent at the bottom of the water-containing detection analyzer.
Description
Technical Field
The invention relates to the technical field of oil and gas storage and transportation, in particular to a device and a method for detecting the water content of a gas production well of a natural gas underground gas storage.
Background
In the multi-cycle gas production process of the natural gas underground gas storage, the natural gas is often mixed with stratum water. In the later period of exploitation, the residual reserves of underground gas gradually decrease, the formation pressure, the bottom hole pressure and the wellhead pressure are continuously reduced, part of water slides into a shaft to form effusion, the gas yield of a gas well can be rapidly reduced and the liquid yield is increased due to the effusion of the shaft, and the gas production well of a gas storage is not normally operated.
The method is influenced by reservoir conditions, the production parameters of each gas production well of the underground gas storage are greatly different, the ground water content of the gas production well is continuously changed along with the gas production time, and the dynamic detection of the water content of each gas production well is an effective measure for accurately judging the liquid accumulation condition of a well shaft of the gas production well and ensuring the smooth gas production process of the underground gas storage of natural gas. At present, the water content of the gas well is detected by separating and dehydrating the produced gas, so that the water content of the gas well for a period of time is indirectly obtained, the cost is high, the detection period is long, and the precision is low. In order to determine the change rule of the water content of the gas well and the influence degree of the water content on the accumulated liquid of the shaft, a new low-cost online detection device and method need to be developed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a device and a method for detecting the water content of a gas production well of a natural gas underground gas storage, so as to solve the technical problems of high cost, long detection period and low precision in the prior art that the water content of the gas production well is indirectly obtained after separation and dehydration of the produced gas in the technology for detecting the water content of the gas production well.
The embodiment of the invention provides a device for detecting the water content of a natural gas underground gas storage gas production well, which comprises an automatic wavelength detector, a water content detection analyzer, a gas production pipeline, a timer, a flow sensor and a data acquisition and processing unit; the gas production pipeline is connected with a gas production well, a gas circuit main valve is arranged on the gas production pipeline and used for controlling whether natural gas enters the gas production pipeline, the gas production pipeline is further provided with a gas inlet branch line and a gas outlet branch line, one end of the gas inlet branch line is communicated with the gas production pipeline, the other end of the gas inlet branch line is communicated with a water-containing detection analyzer, one end of the gas outlet branch line is communicated with the gas production pipeline, the other end of the gas outlet branch line is communicated with the water-containing detection analyzer, and control valves are arranged on the gas inlet branch line and the gas outlet branch line; the gas inlet branch line is provided with a timer and a flow sensor, the timer is used for recording the time of the water content detection analyzer for detecting the natural gas, and the flow sensor is used for detecting the flow of the natural gas entering the water content detection analyzer; the automatic wavelength detector is used for detecting the wavelength change of the detection reagent at the bottom of the water-containing detection analyzer; the data acquisition processing unit is used for collecting the numerical value of the flow sensor, the quantity of the detection reagent and the time of the timer so as to obtain the water content of the detected gas.
Preferably, the device for detecting the water content of the gas production well of the natural gas underground gas storage further comprises a control unit, wherein the control unit is respectively connected with the automatic wavelength detector, the timer and the gas path master valve; and when the automatic wavelength detector detects that the wavelength of the detection reagent in the water-containing detection analyzer is 460nm in the blue wavelength band and is not changed any more, a signal is sent to the control unit, and the control unit controls the timer to stop and the gas circuit total valve to be closed.
Preferably, the water-containing detection analyzer comprises a pressurizing device and a detection reagent accommodating cylinder; the pressurizing device is communicated with the air inlet branch line, the detected gas enters the pressurizing device through the air inlet branch line and then enters the detection reagent accommodating cylinder, and the pressurizing device is used for increasing the pressure entering the detection reagent accommodating cylinder; the detection reagent accommodating cylinder is used for accommodating detection reagent anhydrous copper sulfate.
Preferably, the pressurizing device is detachably screwed with the detection reagent accommodating cylinder.
Preferably, the supercharging device comprises an inner pipe, an outer pipe and a rectifying plate, wherein the inner pipe is arranged inside the outer pipe, and a supercharging cavity is formed between the inner pipe and the outer pipe; the rectifying plate is arranged in the pressurizing cavity, one end of the rectifying plate is connected with the outer wall of the inner tube, the other end of the rectifying plate is connected with the inner wall of the outer tube, and a plurality of first through holes are formed in the rectifying plate; the upper portion of inner tube is provided with a plurality of second through-holes, the lower part of inner tube is provided with two third through-holes, two the third through-holes symmetry sets up, just the third through-hole is the round platform shape.
Preferably, the second through hole is obliquely arranged, and the center line of the second through hole and the axis of the inner tube form 30-60 degrees.
Preferably, the exhaust branch line comprises a first exhaust pipe, a second exhaust pipe and an elbow connector, wherein the elbow connector is used for connecting the first exhaust pipe and the second exhaust pipe; one end of the first exhaust pipe, which is provided with an exhaust hole, is inserted into the bottommost part of the detection reagent accommodating cylinder, the other end of the first exhaust pipe is in threaded connection with the elbow joint, one end of the second exhaust pipe is in threaded connection with the elbow joint, and the other end of the second exhaust pipe penetrates through the supercharging device and is connected with the gas production pipeline.
Preferably, a sealing ring is arranged at the joint of the second exhaust pipe and the supercharging device assembly so as to prevent gas leakage.
Preferably, the air inlet branch line is also provided with a pressure regulator, a pressure gauge, a temperature sensor and an alarm unit; the pressure gauge is used for detecting the gas pressure in the air inlet branch line, and the pressure regulator is used for regulating the gas pressure in the air inlet branch line; the temperature sensor is used for detecting the gas temperature in the air inlet branch line; the alarm unit is used for receiving the gas pressure value in the gas inlet branch line sent by the pressure gauge and the gas temperature value in the gas inlet branch line sent by the temperature sensor, and alarming when the pressure value and the temperature value exceed the safety range preset by the alarm unit.
The embodiment of the invention provides a method for detecting the water content of a natural gas underground gas storage gas production well, which adopts the device for detecting the water content of the natural gas underground gas storage gas production well to detect the water content of the natural gas underground gas storage gas production well.
The invention provides a device for detecting the water content of a gas production well of a natural gas underground gas storage, which comprises an automatic wavelength detector, a water content detection analyzer, a gas production pipeline, a timer, a flow sensor and a data acquisition and processing unit, wherein the automatic wavelength detector is used for detecting the water content of the gas production well; the gas production pipeline is connected with a gas production well, a gas circuit main valve is arranged on the gas production pipeline and used for controlling whether natural gas enters the gas production pipeline, the gas production pipeline is further provided with a gas inlet branch line and a gas outlet branch line, one end of the gas inlet branch line is communicated with the gas production pipeline, the other end of the gas inlet branch line is communicated with a water-containing detection analyzer, one end of the gas outlet branch line is communicated with the gas production pipeline, the other end of the gas outlet branch line is communicated with the water-containing detection analyzer, and control valves are arranged on the gas inlet branch line and the gas outlet branch line; the gas inlet branch line is provided with a timer and a flow sensor, the timer is used for recording the time of the water content detection analyzer for detecting the natural gas, and the flow sensor is used for detecting the flow of the natural gas entering the water content detection analyzer; the automatic wavelength detector is used for detecting the wavelength change of the detection reagent at the bottom of the water-containing detection analyzer; the data acquisition processing unit is used for collecting the numerical value of the flow sensor, the quantity of the detection reagent and the time of the timer so as to obtain the water content of the detected gas. When the water content detection equipment for the gas production well of the natural gas underground gas storage is used, the flow sensor is started, then the gas circuit main valve connected with the gas production pipeline of the gas production well and the control valve on the gas inlet branch line are opened, the timer is started to start timing, when the detected gas enters the water content detection analyzer, the water content in the detected gas reacts with a certain mass m of detection reagent anhydrous copper sulfate in the water content detection analyzer, and the reaction formula of the anhydrous copper sulfate and water is as follows: cuSO 4+5H2O= = =CuSO4.5H2 O, the reagent changes from white (wavelength 3700 nm) to blue (wavelength 460 nm), the change of the reagent wavelength at the bottom of the water-containing detection analyzer is detected by an automatic wavelength detector, stopping timing by the timer until the reagent fully reacts; the time difference Deltat of the timer, the value Q of the flow sensor and the mass m of the detection reagent are transmitted into a data acquisition processing unit, the reaction mass ratio of CuSO 4 to H 2 O is 16:9, after the m g anhydrous CuSO 4 powder is completely discolored, the mass m 1 of H 2 O can be calculated to be 9/16m g, then the total volume V=Q of the gas entering the water-containing detection analyzer is obtained according to the flow Q of the flow sensor and the reaction time difference Deltat displayed by the timer, the mass m 1 of the water is divided by the total volume V of the gas, thereby obtaining the water content of the measured gas. Compared with the current method for detecting the water content of the gas well, the device for detecting the water content of the gas well by using the natural gas underground gas storage can detect the gas water content of the gas well in time, can directly obtain a result, has short detection period and high precision, and is convenient to implement detection.
According to the method for detecting the water content of the natural gas underground gas storage gas production well, the water content of the natural gas underground gas storage gas production well is detected by adopting the device for detecting the water content of the natural gas underground gas storage gas production well. Compared with the current method for detecting the water content of the gas well, the method for detecting the water content of the gas well by using the natural gas underground gas storage can detect the gas water content of the gas well, can detect the detected gas in time, directly obtain a result, has short detection period and high precision, and is convenient for implementation of detection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first structure of a device for detecting the water content of a gas production well of a natural gas underground gas storage;
FIG. 2 is a schematic diagram of a water content detection analyzer of the water content detection equipment for a gas production well of a natural gas underground gas storage;
FIG. 3 is a schematic diagram of a second structure of the device for detecting the water content of a gas production well of a natural gas underground gas storage;
fig. 4 is a schematic diagram of a third structure of the device for detecting the water content of a gas production well of a natural gas underground gas storage.
Icon: 1-water content detection equipment for a gas production well of a natural gas underground gas storage; 10-an automatic wavelength detector; 20-a water content detection analyzer; 200-supercharging device; 201-an inner tube; 202-an outer tube; 203-rectifying plates; 210-a detection reagent holding cylinder; 30-gas production line; 300-an air path main valve; 310-an air inlet branch; 320-exhaust branch; 321-a first exhaust pipe; 322-a second exhaust pipe; 323-elbow connector; 324-sealing ring; 330-a control valve; 40-timer; 50-a flow sensor; 60-a data acquisition processing unit; 70-a pressure regulator; 71-a pressure gauge; 80-temperature sensor.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used for convenience in describing the present invention and simplifying the description only, and do not denote or imply that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention provides a device 1 for detecting the water content of a gas production well of a natural gas underground gas storage and a method for detecting the water content of the gas production well of the natural gas underground gas storage, and provides an implementation mode of the device.
As shown in fig. 1, the water content detection device 1 for a gas production well of a natural gas underground gas storage comprises an automatic wavelength detector 10, a water content detection analyzer 20, a gas production pipeline 30, a timer 40, a flow sensor 50 and a data acquisition processing unit 60; the gas production line 30 is connected with a gas production well, a gas circuit main valve 300 is arranged on the gas production line 30 and used for controlling whether natural gas enters the gas production line 30, the gas production line 30 is also provided with a gas inlet branch line 310 and a gas outlet branch line 320, one end of the gas inlet branch line 310 is communicated with the gas production line 30, the other end of the gas inlet branch line 310 is communicated with the water content detection analyzer 20, one end of the gas outlet branch line 320 is communicated with the gas production line 30, the other end of the gas outlet branch line 320 is communicated with the water content detection analyzer 20, and control valves 330 are arranged on the gas inlet branch line 310 and the gas outlet branch line 320; the gas inlet branch line 310 is provided with a timer 40 and a flow sensor 50, the timer 40 is used for recording the time of the natural gas detection by the water content detection analyzer 20, and the flow sensor 50 is used for detecting the flow of the natural gas entering the water content detection analyzer 20; the water-containing detection analyzer 20 is internally provided with anhydrous copper sulfate as a detection reagent, and the automatic wavelength detector 10 is used for detecting the wavelength change of the detection reagent at the bottom of the water-containing detection analyzer 20; the data acquisition processing unit 60 is used for collecting the value of the flow sensor 50, the amount of the detection reagent and the time of the timer 40 so as to obtain the water content of the detected gas. When the water content detection equipment 1 of the gas production well of the natural gas underground gas storage is used, firstly, the flow sensor 50 is started, then, the gas circuit main valve 300 connected with the gas production well gas production pipeline 30 and the control valve 330 on the gas inlet branch line 310 are opened, the timer 40 is started to start timing, when the detected gas enters the water content detection analyzer 20, the water content in the detected gas reacts with anhydrous copper sulfate serving as a detection reagent with a certain mass m in the water content detection analyzer 20, and the reaction formula of the anhydrous copper sulfate and water is as follows: cuSO 4+5H2O= = =CuSO4.5H2 O, the reagent changed from white (wavelength 3700 nm) to blue (wavelength 460 nm), detecting a change in the wavelength of the reagent at the bottom of the aqueous detection analyzer 20 by the automatic wavelength detector 10 until the reagent is sufficiently reacted, and stopping the timer 40; the time difference Deltat of the timer 40, the value Q of the flow sensor 50 and the mass m of the detection reagent are transmitted into a data acquisition processing unit, the reaction mass ratio of CuSO 4 to H 2 O is 16:9, after the m gram of anhydrous CuSO 4 powder is completely discolored, the mass m 1 of H 2 O can be calculated to be 9/16m gram, then the total volume V=Q of the gas entering the water content detection analyzer 20 is obtained according to the flow Q of the flow sensor 50 and the reaction time difference Deltat displayed by the timer 40, the mass m 1 of the water is divided by the total volume V of the gas, thereby obtaining the water content of the measured gas. Compared with the current method for detecting the water content of the gas well, the device 1 for detecting the water content of the gas well of the natural gas underground gas storage provided by the invention can detect the gas content of the gas well in time, can directly obtain a result, has short detection period and high precision, and is convenient for implementation of detection.
To ensure that the anhydrous CuSO 4 of the detection reagent just fully reacts with the detected gas, an automatic wavelength detector 10 is arranged outside the water-containing detection analyzer 20 and opposite to the bottommost position, detection rays are emitted by the reagent at the bottom of the water-containing detection analyzer 20, and if the detection wavelength is 460nm, the detection reagent fully reacts, and the timer 40 stops timing. The automatic wavelength detector 10 is used for detecting the color change of the reagent, so that the detection is time-saving, labor-saving, accurate and reliable compared with manual detection.
The device 1 for detecting the water content of the gas production well of the natural gas underground gas storage further comprises a control unit which is respectively connected with the automatic wavelength detector 10, the timer 40 and the gas path master valve 300; when the automatic wavelength detector 10 detects that the wavelength of the detection reagent in the water-containing detection analyzer 20 is located at 460nm of the blue wavelength band and is not changed any more, a signal is sent to the control unit, which controls the timer 40 to stop and the gas path total valve 300 to be closed.
The water content detection analyzer 20 includes a pressurizing device 200 and a detection reagent accommodating tube 210; the pressurizing device 200 is communicated with the air inlet branch line 310, the detected gas enters the pressurizing device 200 through the air inlet branch line 310 and then enters the detection reagent accommodating cylinder 210, and the pressurizing device 200 is used for increasing the pressure entering the detection reagent accommodating cylinder 210; the detection reagent accommodating cylinder 210 is used for accommodating detection reagent anhydrous copper sulfate. Preferably, the pressurizing means 200 is detachably screw-coupled with the detection reagent accommodating cylinder 210. The detection reagent accommodating tube 210 is in threaded sealing connection with the pressurizing device 200, after detection of the detection reagent is finished, the control valves 330 on the air inlet branch line 310 and the air outlet branch line 320 are closed, and the detection reagent accommodating tube 210 is disassembled. When the detection reagent accommodating cylinder 210 is disassembled, the used detection reagent is poured out by unscrewing the detection reagent accommodating cylinder 210 from the supercharging device 200, and a new detection reagent is replaced, so that the exhaust branch line 320 does not need to be pulled out, the operation is convenient, and the sealing is not affected by damaging the exhaust branch line 320.
Further, the detection reagent accommodating cylinder 210 is made of transparent plastic, so that an operator can observe the use condition of the detection reagent in the detection reagent accommodating cylinder 210. In addition, the used detection reagent poured out from the detection reagent accommodating cylinder 210 can be heated, the detection reagent can be changed into white powder, the detection reagent can be repeatedly used, and the detection cost is greatly reduced.
As shown in fig. 2, the supercharging device 200 includes an inner tube 201, an outer tube 202, and a rectifying plate 203, the inner tube 201 is disposed inside the outer tube 202, and a supercharging cavity is formed between the inner tube 201 and the outer tube 202; the rectifying plate 203 is arranged in the pressurizing cavity, one end of the rectifying plate 203 is connected with the outer wall of the inner tube 201, the other end of the rectifying plate 203 is connected with the inner wall of the outer tube 202, and a plurality of first through holes are formed in the rectifying plate 203; the upper portion of inner tube 201 is provided with a plurality of second through-holes, and the lower part of inner tube 201 is provided with two third through-holes, and two third through-holes symmetry sets up, and the third through-hole is the round platform shape. Preferably, the second through holes are arranged obliquely, with the center line of the second through holes being 30-60 ° from the axis of the inner tube 201. To ensure that the gas to be measured can enter the detection reagent accommodating cylinder 210 and fully react with the detection reagent, the water-containing detection analyzer 20 is provided with a pressurizing device 200. The supercharging device 200 comprises an inner pipe 201, an outer pipe 202 and a rectifying plate 203, wherein the rectifying plate 203 is connected with the inner pipe 201 through threads, the rectifying plate 203 is screwed into the end position of the external thread of the inner pipe 201, and the upper end and the lower end of the inner pipe 201 are connected with the upper end and the lower end of the outer pipe 202 through threads; the path of the measured gas into the pressurizing device 200 is as follows: after the detected gas enters the inner tube 201 of the pressurizing device 200, a part of the detected gas flows downwards from the central cavity of the inner tube 201, the central cavity of the inner tube 201 is firstly reduced and then enlarged, a certain pressurizing effect can be achieved, and a part of the detected gas enters a pressurizing cavity formed by the inner tube 201 and the outer tube 202 from the second through holes on the side wall of the inner tube 201, and the center line of the second through holes and the axis of the inner tube 201 form 30-60 degrees, so that a better pressurizing effect can be achieved; after entering the pressurizing cavity, the gas enters the lower part of the pressurizing cavity through the first through hole on the rectifying plate 203, flows into the inner pipe 201 through the truncated cone-shaped third through hole of the inner pipe 201, and forms high-density gas flow with the existing gas in the inner pipe 201, so that pressure shock waves are generated before the gas enters the detection reagent accommodating cylinder 210, the pressure is effectively converted into kinetic energy, and the purposes of pressurizing and energy saving are achieved.
The exhaust branch 320 includes a first exhaust pipe 321, a second exhaust pipe 322, and a pipe elbow connector 323, where the pipe elbow connector 323 is used to connect the first exhaust pipe 321 and the second exhaust pipe 322; one end of the first exhaust pipe 321 with an exhaust hole is inserted into the bottommost part of the detection reagent accommodating cylinder 210, the other end of the first exhaust pipe is in threaded connection with the elbow joint, one end of the second exhaust pipe 322 is in threaded connection with the elbow joint, and the other end of the second exhaust pipe passes through the supercharging device 200 and is connected with the gas production pipeline 30. Preferably, a sealing ring 324 is installed at the junction of the second exhaust pipe 322 and the supercharging device 200 assembly to prevent gas leakage.
As shown in fig. 3 and 4, the air intake branch line 310 is further provided with a pressure regulator 70, a pressure gauge 71, a temperature sensor 80, and an alarm unit; the pressure gauge 71 is used for detecting the gas pressure in the gas inlet branch 310, and the pressure regulator 70 is used for regulating the gas pressure in the gas inlet branch 310; the temperature sensor 80 is used to detect the temperature of the gas in the gas inlet branch 310; the alarm unit is used for receiving the gas pressure value in the gas inlet branch line 310 sent by the pressure gauge 71 and the gas temperature value in the gas inlet branch line 310 sent by the temperature sensor 80, and alarming when the pressure value and the temperature value exceed the preset safety range of the alarm unit. Specifically, the alarm unit may be a buzzer.
According to the method for detecting the water content of the natural gas underground gas storage gas production well, the water content of the natural gas underground gas storage gas production well is detected by adopting the device 1 for detecting the water content of the natural gas underground gas storage gas production well. Compared with the current method for detecting the water content of the gas well, the method for detecting the water content of the gas well by using the natural gas underground gas storage can detect the gas water content of the gas well, can detect the detected gas in time, directly obtain a result, has short detection period and high precision, and is convenient for implementation of detection.
In summary, the device 1 for detecting the water content of the gas production well of the natural gas underground gas storage comprises an automatic wavelength detector 10, a water content detection analyzer 20, a gas production pipeline 30, a timer 40, a flow sensor 50 and a data acquisition processing unit 60; the gas production line 30 is connected with a gas production well, a gas circuit main valve 300 is arranged on the gas production line 30 and used for controlling whether natural gas enters the gas production line 30, the gas production line 30 is also provided with a gas inlet branch line 310 and a gas outlet branch line 320, one end of the gas inlet branch line 310 is communicated with the gas production line 30, the other end of the gas inlet branch line 310 is communicated with the water content detection analyzer 20, one end of the gas outlet branch line 320 is communicated with the gas production line 30, the other end of the gas outlet branch line 320 is communicated with the water content detection analyzer 20, and control valves 330 are arranged on the gas inlet branch line 310 and the gas outlet branch line 320; the gas inlet branch line 310 is provided with a timer 40 and a flow sensor 50, the timer 40 is used for recording the time of the natural gas detection by the water content detection analyzer 20, and the flow sensor 50 is used for detecting the flow of the natural gas entering the water content detection analyzer 20; the water-containing detection analyzer 20 is internally provided with anhydrous copper sulfate as a detection reagent, and the automatic wavelength detector 10 is used for detecting the wavelength change of the detection reagent at the bottom of the water-containing detection analyzer 20; the data acquisition processing unit 60 is used for collecting the value of the flow sensor 50, the amount of the detection reagent and the time of the timer 40 so as to obtain the water content of the detected gas. When the water content detection equipment 1 of the gas production well of the natural gas underground gas storage is used, firstly, the flow sensor 50 is started, then, the gas circuit main valve 300 connected with the gas production well gas production pipeline 30 and the control valve 330 on the gas inlet branch line 310 are opened, the timer 40 is started to start timing, when the detected gas enters the water content detection analyzer 20, the water content in the detected gas reacts with anhydrous copper sulfate serving as a detection reagent with a certain mass m in the water content detection analyzer 20, and the reaction formula of the anhydrous copper sulfate and water is as follows: cuSO 4+5H2O= = =CuSO4.5H2 O, the reagent changed from white (wavelength 3700 nm) to blue (wavelength 460 nm), detecting a change in the wavelength of the reagent at the bottom of the aqueous detection analyzer 20 by the automatic wavelength detector 10 until the reagent is sufficiently reacted, and stopping the timer 40; the time difference Deltat of the timer 40, the value Q of the flow sensor 50 and the mass m of the detection reagent are transmitted into a data acquisition processing unit, the reaction mass ratio of CuSO 4 to H 2 O is 16:9, after the m gram of anhydrous CuSO 4 powder is completely discolored, the mass m 1 of H 2 O can be calculated to be 9/16m gram, then the total volume V=Q of the gas entering the water content detection analyzer 20 is obtained according to the flow Q of the flow sensor 50 and the reaction time difference Deltat displayed by the timer 40, the mass m 1 of the water is divided by the total volume V of the gas, thereby obtaining the water content of the measured gas. Compared with the current method for detecting the water content of the gas well, the device 1 for detecting the water content of the gas well of the natural gas underground gas storage provided by the invention can detect the gas content of the gas well in time, can directly obtain a result, has short detection period and high precision, and is convenient for implementation of detection.
According to the method for detecting the water content of the natural gas underground gas storage gas production well, the water content of the natural gas underground gas storage gas production well is detected by adopting the device 1 for detecting the water content of the natural gas underground gas storage gas production well. Compared with the current method for detecting the water content of the gas well, the method for detecting the water content of the gas well by using the natural gas underground gas storage can detect the gas water content of the gas well, can detect the detected gas in time, directly obtain a result, has short detection period and high precision, and is convenient for implementation of detection.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. The water content detection method for the natural gas underground gas storage gas production well is characterized in that the water content detection device for the natural gas underground gas storage gas production well comprises an automatic wavelength detector, a water content detection analyzer, a gas production pipeline, a timer, a flow sensor and a data acquisition processing unit;
The gas production pipeline is connected with a gas production well, a gas circuit main valve is arranged on the gas production pipeline and used for controlling whether natural gas enters the gas production pipeline, the gas production pipeline is further provided with a gas inlet branch line and a gas outlet branch line, one end of the gas inlet branch line is communicated with the gas production pipeline, the other end of the gas inlet branch line is communicated with a water-containing detection analyzer, one end of the gas outlet branch line is communicated with the gas production pipeline, the other end of the gas outlet branch line is communicated with the water-containing detection analyzer, and control valves are arranged on the gas inlet branch line and the gas outlet branch line;
the gas inlet branch line is provided with a timer and a flow sensor, the timer is used for recording the time of the water content detection analyzer for detecting the natural gas, and the flow sensor is used for detecting the flow of the natural gas entering the water content detection analyzer;
the water content detection analyzer comprises a pressurizing device and a detection reagent accommodating cylinder;
The pressurizing device is communicated with the air inlet branch line, the detected gas enters the pressurizing device through the air inlet branch line and then enters the detection reagent accommodating cylinder, and the pressurizing device is used for increasing the pressure entering the detection reagent accommodating cylinder;
The detection reagent accommodating cylinder is used for accommodating detection reagent anhydrous copper sulfate;
The exhaust branch line comprises a first exhaust pipe, a second exhaust pipe and an elbow connector, and the elbow connector is used for connecting the first exhaust pipe and the second exhaust pipe; one end of the first exhaust pipe with an exhaust hole is inserted into the bottommost part of the detection reagent accommodating cylinder, the other end of the first exhaust pipe is in threaded connection with the elbow joint, one end of the second exhaust pipe is in threaded connection with the elbow joint, and the other end of the second exhaust pipe penetrates through the supercharging device and is connected with the gas production pipeline;
The automatic wavelength detector is used for detecting the wavelength change of a detection reagent at the bottom of the water-containing detection analyzer;
The data acquisition processing unit is used for collecting the numerical value of the flow sensor, the quality of the detection reagent and the time of the timer, so that the water content of the detected gas is obtained;
The detection method comprises the following steps:
Firstly starting the flow sensor, then opening the gas circuit main valve connected with the gas production pipeline of the gas production well and the control valve on the gas inlet branch line, starting the timer to start timing, and when the detected gas enters the water-containing detection analyzer, reacting the water in the detected gas with anhydrous copper sulfate serving as a detection reagent with a certain mass m in the water-containing detection analyzer, wherein the reaction formula of the anhydrous copper sulfate and water is as follows: cuSO 4+5H2O＝CuSO4 •5H2 O, wherein the detection reagent changes from white with the wavelength of 370nm to blue with the wavelength of 460nm, the automatic wavelength detector is used for detecting the change of the wavelength of the detection reagent at the bottom of the water-containing detection analyzer, and the timer stops timing until the detection reagent fully reacts; the time difference Deltat of the timer, the value Q of the flow sensor and the mass m of the detection reagent are transmitted into the data acquisition processing unit, and the reaction mass ratio of CuSO 4 to H 2 O is 16: after 9,m g of anhydrous CuSO 4 powder is completely discolored, the mass m 1 of H 2 O can be deduced as M g, obtaining total volume V=Q+ delta t of gas entering the water content detection analyzer according to the reaction time difference delta t displayed by the flow rate Q of the flow sensor and the timer, and dividing the mass m 1 of water by the total volume V of gas so as to obtain the water content of the detected gas;
In order to ensure that the anhydrous CuSO 4 of the detection reagent just fully reacts with the detected gas, the automatic wavelength detector is arranged outside the water-containing detection analyzer and opposite to the bottommost position, detection rays are emitted by the detection reagent at the bottom of the water-containing detection analyzer, and if the detection wavelength is changed to 460nm, the detection reagent fully reacts;
The device for detecting the water content of the gas production well of the natural gas underground gas storage further comprises a control unit, wherein the control unit is respectively connected with the automatic wavelength detector, the timer and the gas circuit total valve; and when the automatic wavelength detector detects that the wavelength of the detection reagent in the water-containing detection analyzer is 460nm in the blue wavelength band and is not changed any more, a signal is sent to the control unit, and the control unit controls the timer to stop and the gas circuit total valve to be closed.
2. The method for detecting the water content of the natural gas underground gas storage gas production well by adopting the device for detecting the water content of the natural gas underground gas storage gas production well according to claim 1, wherein the pressurizing device is detachably connected with the detection reagent accommodating cylinder in a threaded manner.
3. The method for detecting the water content of the natural gas underground gas storage gas production well by adopting the device for detecting the water content of the natural gas underground gas storage gas production well according to claim 2, wherein the pressurizing device comprises an inner pipe, an outer pipe and a rectifying plate, the inner pipe is arranged inside the outer pipe, and a pressurizing cavity is formed between the inner pipe and the outer pipe;
The rectifying plate is arranged in the pressurizing cavity, one end of the rectifying plate is connected with the outer wall of the inner tube, the other end of the rectifying plate is connected with the inner wall of the outer tube, and a plurality of first through holes are formed in the rectifying plate;
The upper portion of inner tube is provided with a plurality of second through-holes, the lower part of inner tube is provided with two third through-holes, two the third through-holes symmetry sets up, just the third through-hole is the round platform shape.
4. A method for detecting the water content of a natural gas underground gas storage gas production well by adopting a device for detecting the water content of a natural gas underground gas storage gas production well according to claim 3, wherein the second through holes are obliquely arranged, and the center line of the second through holes is 30-60 degrees with the axis of the inner pipe.
5. The method for detecting the water content of the natural gas underground gas storage gas production well by adopting the device for detecting the water content of the natural gas underground gas storage gas production well according to claim 1, wherein a sealing ring is arranged at the joint of the second exhaust pipe and the supercharging device assembly so as to prevent gas leakage.
6. The method for detecting the water content of the natural gas underground gas storage gas production well by adopting the device for detecting the water content of the natural gas underground gas storage gas production well according to claim 1 is characterized in that a pressure regulator, a pressure gauge, a temperature sensor and an alarm unit are further arranged on the gas inlet branch line;
The pressure gauge is used for detecting the gas pressure in the air inlet branch line, and the pressure regulator is used for regulating the gas pressure in the air inlet branch line;
the temperature sensor is used for detecting the gas temperature in the air inlet branch line;
The alarm unit is used for receiving the gas pressure value in the gas inlet branch line sent by the pressure gauge and the gas temperature value in the gas inlet branch line sent by the temperature sensor, and alarming when the pressure value and the temperature value exceed the safety range preset by the alarm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374848.0A CN108007868B (en) | 2017-12-19 | 2017-12-19 | Device and method for detecting water content of natural gas underground gas storage gas production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374848.0A CN108007868B (en) | 2017-12-19 | 2017-12-19 | Device and method for detecting water content of natural gas underground gas storage gas production well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108007868A CN108007868A (en) | 2018-05-08 |
| CN108007868B true CN108007868B (en) | 2024-06-11 |
Family
ID=62059893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711374848.0A Active CN108007868B (en) | 2017-12-19 | 2017-12-19 | Device and method for detecting water content of natural gas underground gas storage gas production well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108007868B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343585Y (en) * | 1998-06-16 | 1999-10-13 | 大庆石油管理局油田建设设计研究院 | Natural gas trace metal sampler |
| CN2923999Y (en) * | 2005-11-18 | 2007-07-18 | 中国石油天然气股份有限公司 | Oil-well automatic metering device |
| CN102589938A (en) * | 2012-02-29 | 2012-07-18 | 攀钢集团西昌钢钒有限公司 | Converter gas hand-operated sampling device |
| CN103592248A (en) * | 2013-12-05 | 2014-02-19 | 河南农大迅捷测试技术有限公司 | Soil water content colorimetric-determination method |
| CN203441844U (en) * | 2013-08-27 | 2014-02-19 | 杭州传奇环保工程有限公司 | Air supercharging device |
| CN203441845U (en) * | 2013-08-27 | 2014-02-19 | 杭州传奇环保工程有限公司 | Supercharging device with internally-arranged inclined plate |
| CN204832127U (en) * | 2015-07-17 | 2015-12-02 | 云南电网有限责任公司电力科学研究院 | Transformer oil moisture ration testing arrangement |
| CN207636473U (en) * | 2017-12-19 | 2018-07-20 | 山东科技大学 | Natural gas water content rate detection device and natural gas gas recovery facility set group |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8547554B2 (en) * | 2011-08-17 | 2013-10-01 | General Electric Company | Method and system for detecting moisture in natural gas |
-
2017
- 2017-12-19 CN CN201711374848.0A patent/CN108007868B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343585Y (en) * | 1998-06-16 | 1999-10-13 | 大庆石油管理局油田建设设计研究院 | Natural gas trace metal sampler |
| CN2923999Y (en) * | 2005-11-18 | 2007-07-18 | 中国石油天然气股份有限公司 | Oil-well automatic metering device |
| CN102589938A (en) * | 2012-02-29 | 2012-07-18 | 攀钢集团西昌钢钒有限公司 | Converter gas hand-operated sampling device |
| CN203441844U (en) * | 2013-08-27 | 2014-02-19 | 杭州传奇环保工程有限公司 | Air supercharging device |
| CN203441845U (en) * | 2013-08-27 | 2014-02-19 | 杭州传奇环保工程有限公司 | Supercharging device with internally-arranged inclined plate |
| CN103592248A (en) * | 2013-12-05 | 2014-02-19 | 河南农大迅捷测试技术有限公司 | Soil water content colorimetric-determination method |
| CN204832127U (en) * | 2015-07-17 | 2015-12-02 | 云南电网有限责任公司电力科学研究院 | Transformer oil moisture ration testing arrangement |
| CN207636473U (en) * | 2017-12-19 | 2018-07-20 | 山东科技大学 | Natural gas water content rate detection device and natural gas gas recovery facility set group |
Non-Patent Citations (2)
| Title |
|---|
| 林树坤 等.《结晶化学》.华东理工大学,2011,第224-227页. * |
| 湿法脱硫烟气组分测定与比热容计算;李永田;《工业技术创新》;20161031;第3卷(第5期);第937-940页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108007868A (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975865B (en) | Automatic titration system for acid or alkali liquor | |
| CN204649763U (en) | A kind of is the automatic liquid feeder of volumetric flask constant volume | |
| CN108708690A (en) | A kind of oil well hydrogen sulfide device that detection and intelligent dosing are handled automatically | |
| CN105178936A (en) | Method and device for realizing online measurement for single-well water content of crude oil in oil well by virtue of gas-liquid separation | |
| CN202533812U (en) | A liquid level control system of a container | |
| CN108007868B (en) | Device and method for detecting water content of natural gas underground gas storage gas production well | |
| CN208537402U (en) | A kind of rapid-digestion spectrophotometer method detection device | |
| CN207636473U (en) | Natural gas water content rate detection device and natural gas gas recovery facility set group | |
| CN208270384U (en) | A kind of blind pipe permeability performance test device | |
| CN207363652U (en) | A kind of double liquid level detects formula oil well metering device | |
| CN210858709U (en) | Single-well crude oil water content analysis device | |
| CN217359851U (en) | Oil and suspended solid content on-line monitoring device in reinjection water | |
| CN110130885A (en) | A kind of single-well crude oil bearing analysis device and analysis method | |
| CN113006753B (en) | Method and equipment for filling foam drainage agent and foam drainage ball for equipment | |
| CN201464462U (en) | Multi-parameter measuring device of water quality | |
| CN110965986B (en) | Measuring device and method for three-phase flow of produced liquid of oilfield production well | |
| CN112360435A (en) | Multi-parameter intelligent metering system | |
| CN213160201U (en) | Device for detecting density and pH value of slurry in desulfurization absorption tower | |
| CN204024629U (en) | A kind of oil well oil-gas water three-phase flow intelligence eliminator | |
| CN211008615U (en) | Automatic measuring device for mass flow of produced liquid of oil field production well | |
| RU2552563C1 (en) | Portable metering station of extracted well liquid | |
| CN203572530U (en) | Real-time gas volume flow measuring instrument | |
| CN211008614U (en) | Measuring device for three-phase flow of oil field production well produced liquid | |
| CN210543797U (en) | Gas-liquid separator for well head | |
| CN203241113U (en) | Transformer respirator online monitoring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |