CN112978855B - Well cluster sewage recovery system - Google Patents
Well cluster sewage recovery system Download PDFInfo
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- CN112978855B CN112978855B CN202110333423.5A CN202110333423A CN112978855B CN 112978855 B CN112978855 B CN 112978855B CN 202110333423 A CN202110333423 A CN 202110333423A CN 112978855 B CN112978855 B CN 112978855B
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- 239000010865 sewage Substances 0.000 title claims abstract description 228
- 238000011084 recovery Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000001931 thermography Methods 0.000 claims abstract description 33
- 238000005086 pumping Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims description 52
- 241000191291 Abies alba Species 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims 1
- 239000003208 petroleum Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 238000004391 petroleum recovery Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 99
- 239000002351 wastewater Substances 0.000 description 12
- 238000012545 processing Methods 0.000 description 7
- 208000028659 discharge Diseases 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 3
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
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- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Sewage (AREA)
Abstract
The application relates to a well cluster sewage recovery system, and belongs to the technical field of oil exploitation. Well plexus sewage recovery system includes the ditch, the cable pit, the escape canal, sewage recovery unit, well plexus rail, thermal imaging camera and controlgear, ditch and cable pit set up the both sides at the beam-pumping unit respectively, two escape canals set up the both sides at beam-pumping unit and production tree group respectively, sewage recovery unit includes oily effluent water sump, the drainage pond, defeated pipeline outward, drainage pipeline, oily effluent pipeline and intercommunication pipeline, oily sewage collection ditch is linked together with oily effluent water sump, the escape canal all is linked together with the drainage pond, first level gauge, first water pump, first solenoid valve, the second level gauge, the third solenoid valve, second water pump and thermal imaging camera respectively with controlgear electric connection. By adopting the method and the device, the content of petroleum in the oily sewage conveyed to the outward conveying pipeline is relatively high, and the efficiency of petroleum recovery treatment on the oily sewage is increased.
Description
Technical Field
The application relates to the technical field of oil exploitation, in particular to a well cluster sewage recovery system.
Background
For crude oil extraction, well cluster construction is an effective way to realize crude oil development. In a well cluster field, an oil pumping unit and a Christmas tree group are usually arranged to produce crude oil, and during the production process, oil-containing sewage mixed with petroleum may be generated due to oil leakage or oil stain of equipment such as a Christmas tree, and some sewage not mixed with petroleum may also be generated due to rainy season or periodic cleaning of the equipment.
For these waste water, the conventional treatment method is to collect the oil-containing waste water and the waste water without petroleum, so as to carry out petroleum recovery treatment on the waste water, for example, some gas-liquid separation treatment and filtration treatment can be carried out.
However, in the above manner, after the oily sewage and the sewage without petroleum are mixed together, the content of petroleum is relatively low, the content of water is relatively high, and the efficiency of petroleum recovery treatment on the oily sewage is greatly reduced.
Disclosure of Invention
The embodiment of the application provides a well plexus sewage recovery system, can solve the technical problem that the oily sewage in the well plexus existing in the correlation technique carries out the lower efficiency of oil recovery processing, the technical scheme of well plexus sewage recovery system is as follows:
the embodiment of the application provides a well clump yard sewage recovery system, well clump yard sewage recovery system includes trench 1, cable pit 2, two escape canals 3, sewage recovery unit 4, well clump yard rail 5, a plurality of thermal imaging camera 6 and controlgear 7, wherein:
the well cluster field is provided with an oil pumping unit 8 and a Christmas tree group 9 on the ground, the concave ditch 1 and the cable trench 2 are arranged on the ground of the well cluster field and are respectively arranged at two sides of the oil pumping unit 8, the concave ditch 1 is arranged at the corresponding position of a well head and the Christmas tree group 9, and the concave ditch 1 is internally provided with an oily sewage collecting ditch 11;
the two drainage ditches 3 are arranged on the ground of the well cluster field and are respectively arranged at two sides of the oil pumping unit 8 and the Christmas tree group 9, and the cable trench 2 is communicated with the drainage ditches 3;
the sewage recovery device 4 comprises an oily sewage pool 41, a drainage pool 42, an external transmission pipeline 43, a drainage pipeline 44, an oily sewage pipeline 45 and a communication pipeline 46, wherein an oily sewage collecting ditch 11 is communicated with the oily sewage pool 41, two drainage ditches 3 are communicated with the drainage pool 42, the oily sewage pool 41 is communicated with the external transmission pipeline 43 through the oily sewage pipeline 45, a first water pump 451 and a first electromagnetic valve 452 are arranged on the oily sewage pipeline 45, a first liquid level meter is arranged in the oily sewage pool 41, the drainage pool 42 is communicated with the drainage pipeline 44, a second electromagnetic valve 441 is arranged on the drainage pipeline 44, a second liquid level meter is arranged in the drainage pool 42, the oily sewage pool 41 is communicated with the drainage pool 42 through the communication pipeline 46, and a third electromagnetic valve 461 and a second water pump 462 are arranged on the communication pipeline 46;
the oil pumping unit 8 is communicated with an oil pipeline, and the oil pipeline is used for transporting oil;
the grove field fence 5 is arranged on the periphery of the grove field, and the plurality of thermal imaging cameras 6 are uniformly arranged on the grove field fence 5;
the first liquid level meter, the first water pump 451, the first solenoid valve 452, the second solenoid valve 441, the second liquid level meter, the third solenoid valve 461, the second water pump 462 and the plurality of thermal imaging cameras 6 are respectively electrically connected with the control device 7;
the initial states of the first, second, and third solenoid valves 452, 441, 461 are off states, and the initial states of the first and second water pumps 451, 462 are off states;
the thermal imaging cameras 6 are used for detecting the temperature in a preset area and sending the temperature to the control equipment 7, wherein the preset area is an area through which the oil pipeline passes;
the control device 7 is configured to:
when the received value of the first liquid level meter is greater than or equal to a first threshold value, the first electromagnetic valve 452 is controlled to be opened, the first water pump 451 starts to work, and the liquid in the oily sewage tank 41 is conveyed to the output pipeline 43;
when the received value of the first liquid level meter is smaller than or equal to a second threshold value, controlling the first water pump 451 to stop working and the first electromagnetic valve 452 to be closed;
when the value of the received second liquid level meter is greater than or equal to a third threshold value, the second electromagnetic valve 441 is controlled to be opened, and the liquid in the drainage pool 42 is drained through the drainage line 44;
when the received value of the second liquid level meter is smaller than or equal to a fourth threshold value, controlling the second electromagnetic valve 441 to be closed;
when the increment of the temperature of the target position in a time period less than or equal to a first preset time period is greater than or equal to an increment threshold value and the difference between the temperature in a second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold value, if the value of the second liquid level meter is greater than or equal to the third threshold value, the third electromagnetic valve 461 is controlled to be opened, the second water pump 462 is controlled to start working, the liquid in the drainage tank 42 is conveyed to the oily sewage tank 41 through the communication pipeline 46, and if the value of the second liquid level meter is less than or equal to the fourth threshold value, the second water pump 462 is controlled to stop working, and the third electromagnetic valve 461 is controlled to be closed.
In a possible implementation manner, a cable is arranged on the side wall of the cable trench 2, and the cable is electrically connected with the oil pumping unit 8 and used for supplying power to the oil pumping unit 8.
In a possible implementation, a first check valve 453 is further provided on the oil-contaminated water line 45, and the flow direction of the first check valve 453 is the direction from the oil-contaminated water tank 41 to the outgoing line 43.
In one possible implementation, a second check valve 442 is further disposed on the drain line 44, and the flow direction in the second check valve 442 is the direction from the drain pool 42 to the drain line 44.
In a possible implementation, a third check valve 463 is further provided in the communication line 46, and the flow direction in the third check valve 463 is from the drain tank 42 to the oil-containing wastewater tank 41.
In a possible implementation manner, a hollow cover plate is arranged above the oily sewage collecting channel 11.
In a possible implementation, a hollowed-out cover plate is arranged above the cable trench 2.
In one possible implementation, a boss 10 is provided on the surface of the well cluster where the pumping unit 8 and the Christmas tree unit 9 are located, and the groove 1 and the cable trench 2 are provided on the upper surface of the boss 10.
In one possible implementation, the control device 7 is further configured to:
and when the increment of the temperature of the target position in a time period which is less than or equal to the first preset time period is greater than or equal to the increment threshold value, and the difference between the temperature in a second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold value, displaying the thermal imaging video of the thermal imaging camera 6 corresponding to the target position.
In one possible implementation, the control device 7 is further configured to:
and when the increment of the temperature of the target position in a time period which is less than or equal to the first preset time period is greater than or equal to the increment threshold value, and the difference between the temperature in a second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold value, sending an alarm signal.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
the embodiment of the application provides a well cluster sewage recovery system, collect oily sewage through oily sewage collection ditch, collect the sewage of undoped oil through cable pit and escape canal, rethread sewage recovery unit carries oily sewage and carries out subsequent oil recovery processing in the defeated pipeline, still detected the condition of oil pipeline oil leak through a plurality of thermal imaging cameras, the oily sewage of collecting when will leaking oil also carries out subsequent oil recovery processing to in the defeated pipeline, and like this, the oil content in the oily sewage of carrying in the defeated pipeline is higher relatively, the efficiency of carrying out oil recovery processing to oily sewage has been increased.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a well cluster waste water recovery system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a well cluster waste recovery system according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a sewage recovery device according to an embodiment of the present application.
Description of the figures
1. A groove;
11. an oily sewage collecting channel;
2. a cable trench;
3. a drainage ditch;
4. a sewage recovery device;
41. an oil-containing sewage tank;
42. a drainage basin;
43. an export line;
44. a drain line; 441. a second solenoid valve; 442. a second check valve;
45. an oil-containing sewage line; 451. a first water pump; 452. a first solenoid valve; 453. a first check valve;
46. a communication line; 461. a third electromagnetic valve; 462. a second water pump; 463. a third check valve;
5. a well yard enclosure;
6. a thermal imaging camera;
7. a control device;
8. a pumping unit;
9. a Christmas tree group;
10. and (4) a boss.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a well cluster sewage recovery system, as shown in fig. 1 and 2, the well cluster sewage recovery system comprises a groove 1, a cable trench 2, two drainage ditches 3, a sewage recovery device 4, a well cluster fence 5, a plurality of thermal imaging cameras 6 and a control device 7.
The oil pumping unit 8 and the Christmas tree group 9 are arranged on the ground of the well cluster field, the concave groove 1 and the cable trench 2 are arranged on the ground of the well cluster field and are respectively arranged on two sides of the oil pumping unit 8, the concave groove 1 is arranged at the corresponding position of the well mouth and the Christmas tree group 9, and the oil-containing sewage collecting trench 11 is arranged in the concave groove 1.
The length direction of the groove 1 and the cable trench 2 is the length direction in a well cluster field and is also the arrangement direction of the oil pumping unit 8 and the Christmas tree group 9. The Christmas tree group 9 is arranged at the wellhead of an oil well, the groove 1 is also arranged at the corresponding position of the wellhead and the Christmas tree group 9, and the width of the groove 1 is larger than the corresponding width of the wellhead and the Christmas tree group 9, so that the oily sewage mixed with the oil leaked from the wellhead and the Christmas tree group 9 can flow into the groove 1 for collection.
Because the groove 1 is in order to collect the oily sewage of the oil that has adulterated the well head and the Christmas tree group 9 and leaked, so the width that sets up is great, is unfavorable for flowing, so set up an oily sewage collecting channel 11 in groove 1, oily sewage collecting channel 11 can set up in groove 1 and at the well head and one side of Christmas tree group 9, and the width of oily sewage collecting channel 11 is less than the width of groove 1, can be used for the flow of the oily sewage of collection.
The cable is arranged on the side wall of the cable channel 2 and is electrically connected with the oil pumping unit 8 and used for supplying power to the oil pumping unit 8. The cable electrically connected with the pumping unit 8 can be fixed on the side wall of the cable trench 2, and sewage can flow into the groove of the cable trench 2. The trench depth of the trench 2 is large to avoid that the sewage collected in the trench 2 runs over the cables on the side walls of the trench 2.
Optionally, the oily sewage collecting ditch 11 and the cable pit 2 are provided with hollow cover plates above, so that other impurities are prevented from falling into the oily sewage collecting ditch 11 and the cable pit 2. A combustible gas monitoring device can be further arranged on the hollow cover plate of the oily sewage collecting channel 11, and when the content of the combustible gas near the detection channel reaches a preset threshold value, an alarm signal can be sent out to remind a worker to avoid open fire.
Optionally, a boss 10 is arranged on the ground of the well cluster where the pumping unit 8 and the Christmas tree unit 9 are located, and the groove 1 and the cable trench 2 are arranged on the upper surface of the boss 10. The pumping unit 8 and the Christmas tree group 9 are heavy, and the bottom surfaces are sunken due to long-time placement, so that a boss 10 can be arranged on the bottom surface of a well cluster field where the pumping unit 8 and the Christmas tree group 9 are located, and the groove 1 and the cable trench 2 can also be directly arranged on the upper surface of the boss 10.
The two drainage ditches 3 are arranged on the ground of the well cluster field and are respectively arranged at two sides of the oil pumping unit 8 and the Christmas tree group 9, and the cable trench 2 is communicated with the drainage ditches 3.
Two drainage ditches 3 are further arranged on the bottom surface of the well cluster field, and the two drainage ditches 3 are respectively arranged on two sides of the oil pumping unit 8 and the Christmas tree group 9 and are respectively arranged on the outer sides of the concave ditch 1 and the cable ditch 2. The cable trench 2 may be in communication with one of the drainage trenches 3 for circulating the sewage collected in the cable trench 2 to the drainage trench 3.
As shown in fig. 3, the sewage recovery device 4 includes an oil-containing sewage tank 41, a drainage tank 42, an external transmission line 43, a drainage line 44, an oil-containing sewage line 45 and a communication line 46, the oil-containing sewage collection trench 11 is communicated with the oil-containing sewage tank 41, both drainage trenches 3 are communicated with the drainage tank 42, the oil-containing sewage tank 41 is communicated with the external transmission line 43 through the oil-containing sewage line 45, the oil-containing sewage line 45 is provided with a first water pump 451 and a first electromagnetic valve 452, the oil-containing sewage tank 41 is provided with a first liquid level meter, the drainage tank 42 is communicated with the drainage line 44, the drainage line 44 is provided with a second electromagnetic valve 441, the drainage tank 42 is provided with a second liquid level meter, the oil-containing sewage tank 41 is communicated with the drainage tank 42 through the communication line 46, and the communication line 46 is provided with a third electromagnetic valve 461 and a second water pump 462.
Since the groove 1 is used for collecting oily sewage mixed with oil leaked from the wellhead and the Christmas tree group 9, and the oily sewage collecting groove 11 arranged in the groove 1 is used for circulating the oily sewage collected in the groove 1 to other places for oil recovery treatment, the oily sewage collecting groove 11 can be communicated with the oily sewage pool 41, so that the oily sewage collected in the oily sewage collecting groove 11 can be circulated to the oily sewage pool 41.
Besides the sewage collected in the groove 1 is doped with more petroleum, the sewage in other places is usually doped with less petroleum, so that the sewage collected in the cable trench 2 and the drainage trench 3 does not need to be conveyed to the oil-containing sewage tank 41 for subsequent petroleum recovery treatment, the drainage trench 3 can be communicated with the drainage tank 42, and the sewage collected in the drainage trench 3 can be directly conveyed to the drainage tank 42. Since the cable trench 2 is communicated with the drainage trench 3, the sewage collected in the cable trench 2 is also circulated to the drainage tank 42 through the drainage trench 3.
The oily sewage pool 41 can be communicated with an external pipeline 43, the external pipeline 43 can convey oily sewage to a place where the oily sewage is subjected to petroleum recovery treatment, the oily sewage conveyed by the external pipeline 43 can be subjected to certain operations such as gas-liquid separation, filtration and the like, and petroleum doped in the oily sewage is separated and recycled.
The oily sewage reservoir 41 and the export pipeline 43 can be communicated through an oily sewage pipeline 45, and the oily sewage in the oily sewage reservoir 41 can be transported into the export pipeline 43 through the oily sewage pipeline 45. A first water pump 451 and a first solenoid valve 452 may be disposed on the oil-containing sewage line 45, the first solenoid valve 452 is used for opening and closing the pipes of the oil-containing sewage line 45, and the first water pump 451 is used for conveying the oil-containing sewage in the oil-containing sewage tank 41 to the external transmission line 43 for power support.
The oily sewage tank 41 is provided with a first liquid level meter for detecting the height of oily sewage collected in the oily sewage tank 41, the first liquid level meter can set two threshold values, namely a first threshold value and a second threshold value, and the first threshold value is greater than the second threshold value. When the height of the oily sewage in the oily sewage tank 41 is greater than or equal to the first threshold value, it indicates that the oily sewage in the oily sewage tank 41 is enough at this time, and the oily sewage in the oily sewage tank 41 can be conveyed to the output pipeline 43. When the height of the oily sewage in the oily sewage pool 41 is less than or equal to the second threshold value, which indicates that the oily sewage in the oily sewage pool 41 is already conveyed into the outward conveying pipeline 43, the conveyance of the oily sewage into the outward conveying pipeline 43 may be stopped.
Since the sewage collected in the drainage pool 42 is from the cable trench 2 and the drainage trench 3, the sewage in the drainage pool 42 is not mixed with oil, so that the drainage pool 42 can be directly communicated with a drainage pipeline 44, and the other end of the drainage pipeline 44 can directly discharge the sewage.
A second solenoid valve 441 may be provided on the drain line 44 for opening and closing the pipes of the drain line 44.
The drain tank 42 is provided with a second liquid level meter for detecting the height of the sewage collected in the drain tank 42, and the second liquid level meter can set two threshold values, a third threshold value and a fourth threshold value, wherein the third threshold value is larger than the fourth threshold value. When the height of the sewage in the drainage pool 42 is greater than or equal to the third threshold, which indicates that the sewage in the drainage pool 42 is enough, the oily sewage in the drainage pool 42 can be conveyed to the drainage line 44 for drainage. When the wastewater in the drainage tank 42 is discharged through the drainage line 44, the wastewater in the drainage tank 42 gradually decreases in height, and when the wastewater is less than or equal to the fourth threshold, it indicates that the wastewater in the drainage tank 42 has been conveyed to the drainage line 44 for discharge, and at this time, the discharge of the wastewater in the drainage tank 42 may be stopped.
The oil pumping unit 8 is communicated with an oil pipeline, and the oil pipeline is used for transporting oil.
The grove field fence 5 is arranged on the periphery of the grove field, and the plurality of thermal imaging cameras 6 are uniformly arranged on the grove field fence 5. And the thermal imaging cameras 6 are used for detecting the temperature in a preset area and sending the temperature to the control equipment 7, wherein the preset area is an area through which an oil pipeline passes.
The thermal imaging cameras 6 can monitor the temperature in the preset area, the preset areas of the thermal imaging cameras 6 are set in the area where the oil pipeline passes, and the temperature change around the oil pipeline is monitored all the time. When the produced oil is normally conveyed, the temperature does not change too much, but because the temperature of the oil which is just produced is higher, when the oil pipeline leaks, the temperature of the bottom surface of the leaking part will become higher, and the thermal imaging camera 6 can be used for monitoring the situation.
The first liquid level meter, the first water pump 451, the first solenoid valve 452, the second solenoid valve 441, the second liquid level meter, the third solenoid valve 461, the second water pump 462 and the plurality of thermal imaging cameras 6 are respectively electrically connected with the control device 7.
The control device 7 can receive the values of the liquid level heights sent by the first liquid level meter and the second liquid level meter, receive the temperatures sent by the plurality of thermal imaging cameras 6, control the first water pump 451 and the second water pump 462 to start or stop working, and control the first solenoid valve 452, the second solenoid valve 441 and the third solenoid valve 461 to open or close.
The first, second, and third solenoid valves 452, 441, 461 are initially closed, and the first and second water pumps 451, 462 are initially stopped.
For the well cluster sewage recovery system in this embodiment, three cases are described in detail as follows:
situation one
When oil is extracted, oil-containing sewage generated by oil leaked from a wellhead and a Christmas tree group 9 enters the groove 1, the oil-containing sewage can flow into an oil-containing sewage collecting groove 11 arranged in the groove 1 and then flows into an oil-containing sewage pool 41 communicated with the oil-containing sewage collecting groove 11, and for the situation, the control device 7 can control the discharge treatment process of the oil-containing sewage pool as follows:
a control device 7 for: when the received value of the first liquid level meter is greater than or equal to the first threshold value, the first electromagnetic valve 452 is controlled to be opened, the first water pump 451 starts to work, and the liquid in the oily sewage tank 41 is conveyed to the output pipeline 43. And when the received value of the first liquid level meter is less than or equal to the second threshold value, controlling the first water pump 451 to stop working and the first electromagnetic valve 452 to be closed.
In operation, when the value of the first liquid level meter received by the control device 7 (i.e. the height of the oily sewage in the oily sewage pool 41) is greater than or equal to the first threshold value, it indicates that the oily sewage in the oily sewage pool 41 is enough at this time, and the oily sewage in the oily sewage pool 41 can be conveyed to the output pipeline 43, at this time, the control device 7 can control the first electromagnetic valve 452 to open, and then control the first water pump 451 to start working, at this time, the first water pump 451 pumps the oily sewage out of the oily sewage pool 41 and conveys the oily sewage to the output pipeline 43. When the value of the first level gauge (i.e., the height of the oily sewage in the oily sewage tank 41) received by the control device 7 is less than or equal to the second threshold value, it indicates that the oily sewage in the oily sewage tank 41 has been delivered to the outward delivery pipeline 43, and at this time, the control device 7 may control the first water pump 451 to stop operating, and control the first electromagnetic valve 452 to close, thereby stopping the delivery of the oily sewage into the outward delivery pipeline 43.
Optionally, a first check valve 453 may be further disposed on the oil-contaminated water line 45, and a flow direction of the first check valve 453 is a direction from the oil-contaminated water tank 41 to the external transfer line 43. The first check valve 453 is provided to prevent the oily sewage from flowing back from the outgoing line 43 to the oily sewage tank 41.
Situation two
When sewage generated by equipment cleaning in rainy season or at ordinary times enters the cable trench 2 and the drainage trench 3 and then flows into the drainage pool 42 communicated with the drainage trench 3 through the drainage trench 3, for the case that the sewage in the drainage pool is not mixed with petroleum, the control device 7 controls the drainage treatment process of the drainage pool 42 as follows:
a control device 7 for: when the received value of the second liquid level meter is greater than or equal to the third threshold value, the second electromagnetic valve 441 is controlled to be opened, and the liquid in the drainage pool 42 is drained through the drainage line 44; when the received value of the second level gauge is less than or equal to the fourth threshold value, the second solenoid valve 441 is controlled to close.
In operation, when the value of the second liquid level meter (i.e. the height of the sewage in the drainage pool 42) received by the control device 7 is greater than or equal to the third threshold value, which indicates that the sewage in the drainage pool 42 is enough to discharge the sewage in the drainage pool 42 through the drainage line 44, the control device 7 can control the second solenoid valve 441 to open, so as to discharge the sewage from the drainage pool 42. When the value of the second liquid level meter received by the control device 7 (i.e., the height of the sewage in the drainage tank 42) is less than or equal to the fourth threshold value, which indicates that the drainage of the sewage in the drainage tank 42 is completed, the control device 7 may control the second solenoid valve 441 to close, so that the drainage tank 42 stops draining the sewage, during the drainage of the sewage in the drainage tank 42 through the drainage line 44.
Optionally, a second check valve 442 is disposed on the drain line 44, and the flow direction of the second check valve 442 is from the drain pool 42 to the drain line 44. The second check valve 442 is provided to prevent the sewage from flowing back into the drain tank 42 from the drain line 44.
Situation three
A control device 7 for: when the increment of the temperature of the target position in a time period less than or equal to the first preset time period is greater than or equal to the increment threshold value and the difference between the temperature in a second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold value, if the value of the second liquid level meter is greater than or equal to the third threshold value, the third electromagnetic valve 461 is controlled to be opened, the second water pump 462 is controlled to start to operate, the liquid in the drain tank 42 is conveyed to the oily sewage tank 41 through the communication pipeline 46, and if the value of the second liquid level meter is less than or equal to the fourth threshold value, the second water pump 462 is controlled to stop operating, and the third electromagnetic valve 461 is controlled to be closed.
In practice, the thermal imaging camera 6 may monitor the temperature in a predetermined area, i.e. in the vicinity of the oil transport pipeline, and transmit the temperature to the control device 7. When the temperature received by the control device 7 and transmitted by the thermal imaging camera 6 rises for a preset period of time and exceeds a preset threshold, and the increment of the temperature is kept within a certain range for a certain period of time, that is the temperature at the target location is incremented by an amount greater than or equal to the increment threshold over a period of time less than or equal to the first preset period of time, and the difference between the temperature in the second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold, when the control device 7 determines that the above situation occurs, it indicates that an oil leakage event occurs in the oil pipeline, at this time, the sewage collected in the cable trench 2 and the drainage trench 3 is oil-containing sewage doped with oil, the sewage flowing into the drainage pool 42 is also oil-containing sewage, and at this time, the oil-containing sewage in the drainage pool 42 cannot be directly discharged through the drainage pipeline 44. When the control device 7 determines that the above situation occurs, the oily sewage in the drainage pool 42 can be transferred to the oily sewage pool 41 when the oily sewage in the drainage pool 42 is large, and then transferred to the export pipeline 43 through the oily sewage pool 41 for oil recovery treatment, that is, the following operations can be performed:
when the control device 7 judges that the above situation occurs, if the value of the second liquid level meter in the drainage pool 42 is greater than or equal to the third threshold value, which indicates that the oily sewage in the drainage pool 42 is more and needs to be transported, the third electromagnetic valve 461 on the communication pipeline 46 can be controlled to be opened, so as to transport the oily sewage in the drainage pool 42 to the oily sewage pool 41 through the communication pipeline 46. During the transportation, the height of the oily sewage in the drainage tank 42 is gradually lowered, and when the height of the oily sewage in the drainage tank 42 is lowered to be less than or equal to the fourth threshold value, which indicates that the oily sewage in the drainage tank 42 is drained at this time, the third solenoid valve 461 can be controlled to be closed. And the control device 7 can judge the value of the first level gauge in the oily sewage tank 41 after the oily sewage in the drainage tank 42 is transferred to the oily sewage tank 41. If the value of the first liquid level meter is greater than or equal to the first threshold value, it indicates that there is more oily sewage in the oily sewage tank 41, at this time, the first electromagnetic valve 452 may be controlled to open, the first water pump 451 may be controlled to start operating, the oily sewage in the oily sewage tank 41 may be transported to the output pipeline 43 through the oily sewage pipeline 45, when the height of the oily sewage in the oily sewage tank 41 decreases to be less than or equal to the second threshold value, it indicates that the oily sewage in the oily sewage tank 41 has been transported, at this time, the first water pump 451 may be controlled to stop operating, and the first electromagnetic valve 452 may be controlled to close.
For such a situation, when the control device 7 detects that the increment of the temperature of the target position in the time period less than or equal to the first preset time period is greater than or equal to the increment threshold, and the difference between the temperature in the second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold, in addition to the above control operation, an alarm signal may be sent to remind the attendant of the possible oil leakage situation, or a thermal imaging video of the monitored preset area of the thermal imaging camera 6 corresponding to the target position is displayed, or both the alarm signal and the thermal imaging video of the monitored preset area of the thermal imaging camera 6 corresponding to the target position are sent, and at this time, the attendant may view the specific oil leakage situation of the oil pipeline according to the alarm signal and the video interface. In order to ensure accuracy, after the operator on duty checks the video interface, the operator on duty determines that the oil leakage condition exists, presses the set button, sends information for determining oil leakage to the control device 7, and after the control device 7 receives the information for determining oil leakage, executes the corresponding control operation. After the oil pipeline with leaked oil is repaired, the person on duty needs to clean the cable trench 2, the drainage ditch 3 and the drainage pool 42, and then sends information that the oil pipeline is repaired to the control device 7, and after the control device 7 receives the information, when the numerical value of the second liquid level meter is greater than or equal to the third threshold value, the third electromagnetic valve 461 is not opened, but the second electromagnetic valve 441 is directly opened, so that the sewage in the drainage pool 42 is directly discharged.
Optionally, a third check valve 463 is further disposed on the communication line 46, and the flow direction of the third check valve 463 is from the drainage tank 42 to the oil-containing wastewater tank 41. The third check valve 463 is provided to prevent the oily sewage from flowing back from the oily sewage tank 41 to the drainage tank 42.
The embodiment of the application provides a well cluster sewage recovery system, collect oily sewage through oily sewage collection ditch, collect the sewage of undoped oil through cable pit and escape canal, rethread sewage recovery unit carries oily sewage and carries out subsequent oil recovery processing in the defeated pipeline, still detected the condition of oil pipeline oil leak through a plurality of thermal imaging cameras, the oily sewage of collecting when will leaking oil also carries out subsequent oil recovery processing to in the defeated pipeline, and like this, the oil content in the oily sewage of carrying in the defeated pipeline is higher relatively, the efficiency of carrying out oil recovery processing to oily sewage has been increased.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a well plexus sewage recovery system, its characterized in that, well plexus sewage recovery system includes trench (1), cable pit (2), two escape ditches (3), sewage recovery unit (4), well plexus rail (5), a plurality of thermal imaging camera (6) and controlgear (7), wherein:
the oil pumping unit (8) and the Christmas tree group (9) are arranged on the ground of the well cluster field, the concave ditch (1) and the cable trench (2) are arranged on the ground of the well cluster field and are respectively arranged on two sides of the oil pumping unit (8), the concave ditch (1) is arranged at the corresponding position of a well head and the Christmas tree group (9), and an oily sewage collecting ditch (11) is arranged in the concave ditch (1);
the two drainage ditches (3) are arranged on the ground of the well cluster field and are respectively arranged at two sides of the oil pumping unit (8) and the Christmas tree group (9), and the cable ditch (2) is communicated with the drainage ditches (3);
the sewage recovery device (4) comprises an oily sewage pool (41), a drainage pool (42), an outward conveying pipeline (43), a drainage pipeline (44), an oily sewage pipeline (45) and a communicating pipeline (46), an oily sewage collecting ditch (11) is communicated with the oily sewage pool (41), two drainage ditches (3) are communicated with the drainage pool (42), the oily sewage pool (41) is communicated with the outward conveying pipeline (43) through the oily sewage pipeline (45), a first water pump (451) and a first electromagnetic valve (452) are arranged on the oily sewage pipeline (45), a first liquid level meter is arranged in the oily sewage pool (41), the drainage pool (42) is communicated with the drainage pipeline (44), a second electromagnetic valve (441) is arranged on the drainage pipeline (44), a second liquid level meter is arranged in the drainage pool (42), the oily sewage pool (41) is communicated with the drainage pool (42) through a communication pipeline (46), and a third electromagnetic valve (461) and a second water pump (462) are arranged on the communication pipeline (46);
the oil pumping unit (8) is communicated with an oil pipeline, and the oil pipeline is used for transporting oil;
the grove field fence (5) is arranged around the grove field, and the plurality of thermal imaging cameras (6) are uniformly arranged on the grove field fence (5);
the first liquid level meter, the first water pump (451), the first electromagnetic valve (452), the second electromagnetic valve (441), the second liquid level meter, the third electromagnetic valve (461), the second water pump (462) and the plurality of thermal imaging cameras (6) are respectively electrically connected with a control device (7);
the initial states of the first solenoid valve (452), the second solenoid valve (441) and the third solenoid valve (461) are closed states, and the initial states of the first water pump (451) and the second water pump (462) are stop working states;
the thermal imaging system comprises a plurality of thermal imaging cameras (6) and a control device (7), wherein the thermal imaging cameras are used for detecting the temperature in a preset area and sending the temperature to the control device, and the preset area is an area through which the oil pipeline passes;
the control device (7) is configured to:
when the received value of the first liquid level meter is larger than or equal to a first threshold value, controlling a first electromagnetic valve (452) to be opened, starting a first water pump (451) to work, and conveying the liquid in the oily sewage pool (41) to an output pipeline (43);
when the received value of the first liquid level meter is smaller than or equal to a second threshold value, controlling the first water pump (451) to stop working and the first electromagnetic valve (452) to close, wherein the second threshold value is smaller than the first threshold value;
when the received value of the second liquid level meter is larger than or equal to a third threshold value, controlling a second electromagnetic valve (441) to be opened, and discharging the liquid in the drainage pool (42) through a drainage pipeline (44);
controlling a second solenoid valve (441) to close when the received value of the second level gauge is less than or equal to a fourth threshold value, wherein the fourth threshold value is less than the third threshold value;
when the increment of the temperature of the target position in a time period which is less than or equal to a first preset time period is greater than or equal to an increment threshold value, and the difference between the temperature in a second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold value, if the value of the second liquid level meter is greater than or equal to the third threshold value, the third electromagnetic valve (461) is controlled to be opened, the second water pump (462) is controlled to start working, the liquid in the drainage pool (42) is conveyed to the oil-containing sewage pool (41) through the communication pipeline (46), and if the value of the second liquid level meter is less than or equal to the fourth threshold value, the second water pump (462) is controlled to stop working, and the third electromagnetic valve (461) is controlled to be closed.
2. The well cluster sewage recovery system of claim 1, wherein a cable is arranged on the side wall of the cable trench (2), and the cable is electrically connected with the oil pumping unit (8) and used for supplying power to the oil pumping unit (8).
3. The well plexus sewage recovery system of claim 1 where the oily sewage line (45) is further provided with a first check valve (453), the direction of flow in the first check valve (453) being from the oily sewage reservoir (41) to the outgoing line (43).
4. The well mat sewage recovery system of claim 1, wherein a second check valve (442) is further disposed on the drain line (44), the direction of flow within the second check valve (442) being in the direction from the drain basin (42) to the drain line (44).
5. The well plexor sewage recovery system of claim 1 where the communication line (46) is further provided with a third check valve (463) and the direction of flow in the third check valve (463) is from the drainage basin (42) to the oily sewage basin (41).
6. The well cluster sewage recovery system of claim 1, wherein a hollowed-out cover plate is arranged above the oily sewage collecting channel (11).
7. The well yard sewage recovery system of claim 1 wherein a hollowed-out cover plate is arranged above the cable trench (2).
8. The well cluster sewage recovery system according to claim 1, wherein a boss (10) is provided on the well cluster ground where the oil pumping unit (8) and the Christmas tree unit (9) are located, and the groove (1) and the cable trench (2) are provided on the upper surface of the boss (10).
9. The well mat sewage recovery system of claim 1, wherein the control device (7) is further configured to:
and when the increment of the temperature of the target position in a time period which is less than or equal to the first preset time period is greater than or equal to the increment threshold value, and the difference between the temperature in a second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold value, displaying the thermal imaging video of the thermal imaging camera (6) corresponding to the target position.
10. The well mat sewage recovery system of claim 1, wherein the control device (7) is further configured to:
and when the increment of the temperature of the target position in a time period which is less than or equal to the first preset time period is greater than or equal to the increment threshold value, and the difference between the temperature in a second preset time period after the time period and the temperature at the starting time point of the time period is always greater than the increment threshold value, sending an alarm signal.
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| CN202110333423.5A CN112978855B (en) | 2021-03-29 | 2021-03-29 | Well cluster sewage recovery system |
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| CN107304663A (en) * | 2016-04-21 | 2017-10-31 | 中国石油天然气股份有限公司 | Dirty oily water collection device and processing system of sour natural gas that contains sulphur |
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