NL2035267A - Method and structure for measuring liquid level of geothermal well - Google Patents
Method and structure for measuring liquid level of geothermal well Download PDFInfo
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- NL2035267A NL2035267A NL2035267A NL2035267A NL2035267A NL 2035267 A NL2035267 A NL 2035267A NL 2035267 A NL2035267 A NL 2035267A NL 2035267 A NL2035267 A NL 2035267A NL 2035267 A NL2035267 A NL 2035267A
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- geothermal well
- pipeline
- liquid level
- directional pipeline
- directional
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- 239000007788 liquid Substances 0.000 title claims abstract description 132
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims 8
- 238000005259 measurement Methods 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 11
- 238000003911 water pollution Methods 0.000 description 11
- 238000005086 pumping Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/30—Geothermal collectors using underground reservoirs for accumulating working fluids or intermediate fluids
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
-
- 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
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
- E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T2010/50—Component parts, details or accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T2010/50—Component parts, details or accessories
- F24T2010/56—Control arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The jpresent disclosure provides a Inethod. and. a structure for measuring a liquid level of a geothermal well. The method includes: drilling a directional pipeline communicated with a geothermal well and is adjacent to the 5 geothermal well, where a communication. point between. the directional pipeline and the geothermal well is located below a liquid surface of the geothermal well; sealing both a wellhead of the geothermal well and an upper port of the directional pipeline; respectively monitoring and acquiring 10 an annulus pressure in the geothermal well and an annulus pressure in the directional pipeline in. a case that the liquid level of the geothermal well is in a stable state; and measuring the liquid level in the directional pipeline to obtain the liquid level of the geothermal well in a case 15 that the annulus pressure in the geothermal well is equal to the annulus pressure in the directional pipeline. FIG.l
Description
No. P142305NL00
METHOD AND STRUCTURE FOR MEASURING LIQUID LEVEL OF
GEOTHERMAL WELL
[0001] The present disclosure relates to the field of geothermal measurement, and in particular, to a method for measuring a liquid level of a geothermal well and a structure for measuring a liquid level of a geothermal well.
[0002] When a geothermal well is operating in a heating season, in order to prevent air or other harmful gases from entering underground to pollute geothermal water, both a wellhead and a surface pipeline are generally in a closed connection state. In a running process of the geothermal well, an underground water level needs to be monitored frequently. In this mode, a conventional measuring line cannot be lowered to the underground and cannot acquire true data of an underground liquid level.
[0003] In order to solve the problems, two manners are mainly used for measuring the underground liquid level in solutions in the conventional art: 1) a sonic liquid-level meter is mounted at a wellhead position, sound waves are reflected at the underground liquid level through propagation of sound, and the underground liquid level is calculated by receiving reflected sound waves; this method is usually disturbed by other objects underground, and the reflected sound waves are often not reflected from the liquid surface, resulting in distortion of the data acquired at the liquid level; 2) a small hole is formed at the wellhead position and a measuring line is lowered to measure the underground liquid level; at this moment, underground air will enter the underground to cause oxidation reactions with an underground liquid or equipment, resulting in equipment corrosion and water pollution; and in addition, there is usually a phenomenon of obstruction during the process of lowering the measuring line due to the existence of a water pumping tubular column.
[0004] A main objective of the present disclosure is to provide a method for measuring a liquid level of a geothermal well and a structure for measuring a liquid level of a geothermal well to at least solve the problems of distortion of liquid level data acquired in a geothermal well liquid level measurement process in the conventional art and equipment corrosion and water pollution caused by air entering underground.
[0005] To achieve the above objective, according to a first aspect of the present disclosure, a method for measuring a liquid level of a geothermal well is provided, which includes: drilling a directional pipeline which is communicated with a geothermal well and is adjacent to the geothermal well, where a communication point between the directional pipeline and the geothermal well is located below a liquid surface of the geothermal well; sealing both a wellhead of the geothermal well and an upper port of the directional pipeline; respectively monitoring and acquiring an annulus pressure in the geothermal well and an annulus pressure in the directional pipeline in a case that the liquid level of the geothermal well is in a stable state; and measuring the liquid level in the directional pipeline to obtain the liquid level of the geothermal well in a case that the annulus pressure in the geothermal well is equal to the annulus pressure in the directional pipeline.
[0006] Further, in a case that the annulus pressure in the geothermal well is not equal to the annulus pressure in the directional pipeline, the method for measuring a liquid level of a geothermal well further includes: regulating the annulus pressure in the directional pipeline through a pressure regulating device arranged in the directional pipeline; and repeatedly monitoring and acquiring the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline until the annulus pressure in the geothermal well is equal to the annulus pressure in the directional pipeline.
[0007] Further, in a case of monitoring and acquiring the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline the method for measuring a liquid level of a geothermal well further includes: respectively setting pressure gauges in the geothermal well and the directional pipeline; and respectively monitoring and acquiring the annulus pressure in the geothermal well and the annulus pressure in the directicnal pipeline through the pressure gauges.
[0008] According to a second aspect of the present disclosure, a method for measuring a liquid level of a geothermal well is provided, which includes: drilling a directional pipeline which is communicated with a geothermal well and is adjacent to the geothermal well, a communication point between the directional pipeline and the geothermal well being located below a liquid surface of the geothermal well; sealing both a wellhead of the geothermal well and an upper port of the directional pipeline; communicating a part above the liquid surface of the geothermal well and a part above the liquid surface of the directional pipeline through a communicating pipeline formed between the geothermal well and the directional pipeline; and measuring a liquid level in the directional pipeline to obtain the liquid level of the geothermal well.
[0009] According to a third aspect of the present disclosure, a structure for measuring a liquid level of a geothermal well is provided, which includes: a geothermal well; a directional pipeline, formed adjacent to the geothermal well, a lower end of the directional pipeline being communicated with a part below a liquid surface of the geothermal well; and a measurement part, arranged in the directional pipeline, the measurement part being used for measuring a liquid level in the directional pipeline to obtain the liquid level of the geothermal well.
[0010] Further, both a wellhead of the geothermal well and an upper port of the directional pipeline are sealed.
[0011] Further, the structure for measuring a liquid level of a geothermal well further includes: a first pressure gauge arranged in the geothermal well, the first pressure gauge being used for monitoring and acquiring an annulus pressure in the geothermal well; and a second pressure gauge arranged in the directional pipeline, the second pressure gauge being used for monitoring and acquiring the annulus pressure in the directional pipeline.
[0012] Further, the structure for measuring a liquid level of a geothermal well further includes: a pressure regulating device communicated with the directional pipeline and connected to each of the first pressure gauge and the second pressure gauge, the pressure regulating device being used for regulating the annulus pressure in the directional pipeline, so that the annulus pressure in the directional pipeline is equal to the annulus pressure in the geothermal well.
[0013] Further, the structure for measuring a liquid level of a geothermal well further includes: a communicating pipeline, formed between the geothermal well and the directional pipeline to communicate a part above the liquid surface of the geothermal well and a part above the liquid surface of the directional pipeline.
[0014] Further, the measurement part is a measuring rope.
[0015] The method for measuring a liquid level of a geothermal well in the technical solution of the present disclosure includes: drilling the directional pipeline 5 which is communicated with the geothermal well and is adjacent to the geothermal well, where the communication point between the directional pipeline and the geothermal well is located below the liquid surface of the geothermal well; sealing both the wellhead of the geothermal well and the upper port of the directional pipeline; respectively monitoring and acquiring the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline in a case that the liquid level of the geothermal well is in a stable state; and measuring the liquid level in the directional pipeline to obtain the liquid level of the geothermal well in a case that the annulus pressure in the geothermal well is equal to the annulus pressure in the directional pipeline. Therefore, in a process of measuring the liquid level of the geothermal well, the directional pipeline will not affect a normal operation of measurement equipment, and the accuracy of the measured data is ensured. Meanwhile, ground air is prevented from entering the geothermal well, and equipment corrosion and water pollution are avoided.
The problems of distortion of liquid level data acquired in a geothermal well liquid level measurement process in the conventional art and equipment corrosion and water pollution caused by air entering underground are solved.
[0016] The specification accompanying drawings, which constitute a part of the present application, are used to provide a further understanding of the present disclosure, and exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure, but do not constitute improper limitations to the present disclosure. In the accompanying drawings:
[0017] FIG. 1 is a flow block diagram of an optional first method for measuring a liquid level of a geothermal well according to an embodiment of the present disclosure;
[0018] FIG. 2 is a flow block diagram of an optional second method for measuring a liquid level of a geothermal well according to an embodiment of the present disclosure;
[0019] FIG. 3 is a flow block diagram of an optional third method for measuring a liquid level of a geothermal well according to an embodiment of the present disclosure;
[0020] FIG. 4 is a schematic diagram of an optional first structure for measuring a liquid level of a geothermal well according to an embodiment of the present disclosure; and
[0021] FIG. 5 is a schematic diagram of an optional second structure for measuring a liquid level of a geothermal well according to an embodiment of the present disclosure.
[0022] The above accompanying drawings include the following reference signs:
[0023] 10, geothermal well; 20, directional pipeline; 30, measurement part; 40, first pressure gauge; 50, second pressure gauge; 60, pressure regulating device; 70, communicating pipe; 80, water pumping pipeline; and 890, submersible pump.
[0024] It is to be noted that embodiments in the present application and features in the embodiments may be combined without a conflict. The present disclosure is described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0025] A first embodiment of the present disclosure discloses a method for measuring a liquid level of a geothermal well, as shown in FIG. 1, which specifically includes the following steps:
:
[0026] S102: a directional pipeline which is communicated with a geothermal well and is adjacent to the geothermal well is drilled, and a communication point between the directional pipeline and the geothermal well is located below a liquid surface of the geothermal well;
[0027] S104: both a wellhead of the geothermal well and an upper port of the directional pipeline are sealed;
[0028] S106: an annulus pressure in the geothermal well and an annulus pressure in the directional pipeline are respectively monitored and acquired in a case that the liquid level of the geothermal well is in a stable state; and
[0029] S108: the liquid level in the directional pipeline is measured to obtain the liquid level of the geothermal well in a case that the annulus pressure in the geothermal well is equal to the annulus pressure in the directional pipeline.
[0030] In a process of measuring the liquid level of the geothermal well, the geothermal well is communicated with a lower end of the directional pipeline to form a communicating vessel; there is no pipeline or other obstacles in the directional pipeline, which will not affect a normal operation of measurement equipment, thereby ensuring the accuracy of the measured data; and in addition, air can be prevented from entering the geothermal well by measuring the liquid level through the directional pipeline, and equipment corrosion and water pollution are avoided. The problems of distortion of liquid level data acquired in a geothermal well liquid level measurement process in the conventional art and equipment corrosion and water pollution caused by air entering underground are solved.
[0031] In a specific implementing process, in step S102, when the directional pipeline is drilled, an upper segment of the directional pipeline is a vertical pipeline, a lower segment of the directional pipeline is an arc-shaped pipeline, and the vertical pipeline is communicated with a position below the liquid surface of the geothermal well through the arc-shaped pipeline. The vertical pipeline of the upper segment is parallel to the geothermal well 10, so as to ensure that a measuring rope can smoothly detect the position of the liquid surface downward when the measuring rope is used for measuring the liquid level. The directional pipeline is generally a small wellbore with a small diameter that meets the requirements for measuring a water level.
[0032] In step S104, ground air can be effectively prevented from entering the geothermal well by sealing both the wellhead of the geothermal well and the upper port of the directional pipeline, so as to avoid oxidation reactions with underground liquids or equipment to cause equipment corrosion and water pollution.
[0033] In step S106, in a case of monitoring and acquiring the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline, a pressure gauge is arranged in each of the geothermal well and the directional pipeline; and the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline are respectively monitored and acquired through the pressure gauges.
[0034] In a process of pumping hot water from the geothermal well, a liquid level and a pressure inside the geothermal well will change. When the hot water is pumped to a certain extent, the liquid level of the geothermal well will be in a stable state, that is, the liquid level will not be changed up and down. In a case that the annulus pressure in the geothermal well is not equal to the annulus pressure in the directional pipeline, in order to ensure the accuracy of monitoring liquid level data, the pressure in the directional pipeline needs to be regulated, so as to balance the pressure in the geothermal well and the pressure in the directional pipeline.
Specifically, after the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline are monitored and acquired, if the annulus pressure in the geothermal well is not balanced with the annulus pressure in the directional pipeline, as shown in FIG. 2, the method for measuring a liquid level of a geothermal well of the present embodiment further includes:
[0035] S107: the annulus pressure in the directional pipeline is regulated through a pressure regulating device arranged in the directional pipeline; and the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline are repeatedly monitored and acquired until the annulus pressure in the geothermal well is equal to the annulus pressure in the directional pipeline.
[0036] According to a second embodiment of the present disclosure, a method for measuring a liquid level of a geothermal well is provided, as shown in FIG. 3, which specifically includes the following steps:
[0037] S202: a directional pipeline which is communicated with a geothermal well is drilled and is adjacent to the geothermal well, and a communication point between the directional pipeline and the geothermal well is located below a liquid surface of the geothermal well;
[0038] S204: both a wellhead of the geothermal well and an upper port of the directional pipeline are sealed; and
[0039] S206: a part above the liquid surface of the geothermal well is communicated with a part above the liquid surface of the directional pipeline through a communicating pipeline formed between the geothermal well and the directional pipeline, and the liquid level in the directional pipeline is measured to obtain the liquid level in the geothermal well.
[0040] The difference between the method for measuring a liquid level of a geothermal well of the present embodiment and Embodiment 1 is that the part above the liquid surface of the geothermal well is communicated with the part above the liquid surface of the directional pipeline through the communicating pipeline, so that the pressure in the geothermal well is equal to the pressure in the directional pipeline at any time. Therefore, the annulus pressure in the geothermal well and the annulus pressure in the directional pipeline do not need to be measured and regulated, and a measurement process is more convenient. In a process of measuring the liquid level of the geothermal well, the geothermal well is communicated with a lower end of the directional pipeline to form a communicating vessel; there is no pipeline or other obstacles in the directional pipeline, which will not affect a normal operation of measurement equipment, thereby ensuring the accuracy of the measured data; and in addition, air can be prevented from entering the geothermal well by measuring the liquid level in the directional pipeline, and equipment corrosion and water pollution are avoided. The problems of distortion of liquid level data acquired in a geothermal well liquid level measurement process in the conventional art and equipment corrosion and water pollution caused by air entering underground are solved.
[0041] According to a third aspect of the present disclosure, a structure for measuring a liquid level of a geothermal well is provided, as shown in FIG. 4, which includes: a geothermal well 10, a directional pipeline 20, and a measurement part 30; the directional pipeline 20 is formed adjacent to the geothermal well 10; a lower end of the directional pipeline 20 is communicated with a part below a liquid surface of the geothermal well 10; and the measurement part 30 is arranged in the directional pipeline 20, and the measurement part 30 is used for measuring the liquid level in the directional pipeline 20 to obtain the liquid level of the geothermal well 10.
[0042] According to the structure for measuring a liquid level of a geothermal well of the present embodiment, the directional pipeline 20 communicated with the geothermal well 10 is formed, the geothermal well 10 and the directional pipeline 20 form the communicating vessel, and the liquid level of the directional pipeline 20 is indirectly measured to obtain the liquid level of the geothermal well 10. There is no pipeline or other obstacles in the directional pipeline, which will not affect a normal operation of the measurement equipment, thereby ensuring the accuracy of the measured data; and in addition, air can be prevented from entering the geothermal well by measuring the liquid level through the directional pipeline, and equipment corrosion and water pollution are avoided. The problems of distortion of liquid level data acquired in a geothermal well liquid level measurement process in the conventional art and equipment corrosion and water pollution caused by air entering underground are solved.
[0043] In a specific implementation process, a water pumping pipeline 80 is arranged in the geothermal well 10, and a submersible pump 90 is arranged at a lower end of the water pumping pipeline 80, thereby continuously pumping hot water to the ground. Both the wellhead of the geothermal well 10 and the upper part of the directional pipeline 20 are sealed. The geothermal well 10 is completely sealed. A sealing cover of the directional pipeline 20 may be opened or closed. A sealed environment in the directional pipeline 20 can be ensured when the upper port of the directional pipeline 20 is closed. The measurement part 30 can be lowered when the liquid level is measured in a case that the upper port of the directional pipeline 20 is opened.
[0044] In a specific implementing process, an upper segment of the directional pipeline 20 is a vertical pipeline, a lower segment of the directional pipeline is an arc-shaped pipeline, and the vertical pipeline is communicated with a position below the liquid surface of the geothermal well 10 through the arc-shaped pipeline. The vertical pipeline of the upper segment is parallel to the geothermal well 10, so as to ensure that a measuring rope can smoothly detect the position of the liquid surface downward when the measuring rope is used for measuring the liquid level.
The directional pipeline is generally a small wellbore with a small diameter that meets the requirements for measuring the water level. The structure for measuring a liquid level of a geothermal well of the present embodiment has two different structures. In a first structure for measuring a liquid level of a geothermal well, since the geothermal well 10 is not communicated with the position above the liquid surface of the directional pipeline 20, when hot water is pumped from the geothermal well 10, there will be a deviation between the annulus pressures inside the geothermal well 10 and the directional pipeline 20, resulting in a deviation in the liquid level. In order to ensure the accuracy of monitoring the liquid level, the annulus pressures of the geothermal well 10 and the directional pipeline 20 need to be kept balance. Further, the first structure for measuring a liquid level of a geothermal well further includes a first pressure gauge 40, a second pressure gauge 50, and a pressure regulating device 60. The first pressure gauge 40 is arranged in the geothermal well 10.
The first pressure gauge 40 is used for monitoring and acquiring an annulus pressure in the geothermal well 10.
The second pressure gauge 50 is arranged in the directional pipeline 20. The second pressure gauge 50 is used for monitoring and acquiring an annulus pressure in the directional pipeline 20. The pressure regulating device 60 is communicated with the directional pipeline 20 and is connected to each of the first pressure gauge 40 and the second pressure gauge 50. When there is a deviation between the pressures monitored by the first pressure gauge 40 and the second pressure gauge 50, and the annulus pressure in the directional pipeline 20 is regulated through the pressure regulating device 60, so that the annulus pressure in the directional pipeline 20 is equal to the annulus pressure in the geothermal well 10. At this moment, the accuracy of monitoring the liquid level can be ensured.
[0045] As shown in FIG. 5, a second structure for measuring a liquid level of a geothermal well includes a communicating pipeline 70. The communicating pipeline 70 is formed between the geothermal well 10 and the directional pipeline 20 to communicate a part above the liquid surface of the geothermal well 10 and a part above the liquid surface of the directional pipeline 20. The annulus pressure of the geothermal well 10 and the annulus pressure of the directional pipeline 20 are kept balance all the time by the communicating pipeline 70; and the accuracy of monitoring the liquid level can be ensured.
[0046] Further, when the liquid level is measured actually, the measurement part 30 may be a measuring rope, or may also use a sonic liquid-level meter or other forms of liquid-level meters.
[0047] The above is only the preferred embodiments of the present disclosure, and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present disclosure shall fall within the scope of protection of the present disclosure.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211011902.6A CN115218990A (en) | 2022-08-23 | 2022-08-23 | Geothermal well liquid level measuring method and geothermal well liquid level measuring structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL2035267A true NL2035267A (en) | 2024-03-01 |
| NL2035267B1 NL2035267B1 (en) | 2024-08-27 |
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| NL2035267A NL2035267B1 (en) | 2022-08-23 | 2023-07-05 | Method and structure for measuring liquid level of geothermal well |
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| CN (1) | CN115218990A (en) |
| GB (1) | GB2622297A (en) |
| NL (1) | NL2035267B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115218990A (en) * | 2022-08-23 | 2022-10-21 | 中石化绿源地热能开发有限公司 | Geothermal well liquid level measuring method and geothermal well liquid level measuring structure |
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| DE102014206042B4 (en) * | 2014-03-31 | 2015-10-08 | Holger Gawryck | Measuring device for a geothermal probe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101541801B1 (en) * | 2014-08-26 | 2015-08-04 | (주)지오쓰리에코 | Geothermal system using gathered rainfall |
| KR101855081B1 (en) * | 2016-02-12 | 2018-06-21 | 한국생산기술연구원 | Circulating apparatus for collecting geothermal and geothermal colection system using the same |
| CN115218990A (en) * | 2022-08-23 | 2022-10-21 | 中石化绿源地热能开发有限公司 | Geothermal well liquid level measuring method and geothermal well liquid level measuring structure |
| CN217877897U (en) * | 2022-08-23 | 2022-11-22 | 中石化绿源地热能开发有限公司 | Geothermal well liquid level measuring structure |
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2022
- 2022-08-23 CN CN202211011902.6A patent/CN115218990A/en active Pending
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2023
- 2023-06-22 GB GB2309451.9A patent/GB2622297A/en active Pending
- 2023-07-05 NL NL2035267A patent/NL2035267B1/en active
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|---|---|---|---|---|
| EP2770306A1 (en) * | 2013-02-26 | 2014-08-27 | boden & grundwasser GmbH | Method for measuring the fluid level in an opening in the ground |
| DE102014206042B4 (en) * | 2014-03-31 | 2015-10-08 | Holger Gawryck | Measuring device for a geothermal probe |
| JP2018059492A (en) * | 2016-09-30 | 2018-04-12 | 俊一 田原 | Geothermal exchanger and geothermal power generation device |
| CN112502661A (en) * | 2019-09-16 | 2021-03-16 | 中国石油化工集团有限公司 | Geothermal well head device with test function |
| CN112923994A (en) * | 2021-01-23 | 2021-06-08 | 万江新能源集团有限公司 | Novel wellhead device and matched liquid level monitoring system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115218990A (en) | 2022-10-21 |
| GB2622297A (en) | 2024-03-13 |
| NL2035267B1 (en) | 2024-08-27 |
| GB202309451D0 (en) | 2023-08-09 |
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