CN116877061A - Automatic temperature measurement method and system for geothermal well - Google Patents
Automatic temperature measurement method and system for geothermal well Download PDFInfo
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 96
- 238000012937 correction Methods 0.000 claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 23
- 241000976416 Isatis tinctoria subsp. canescens Species 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 235000020681 well water Nutrition 0.000 claims description 7
- 239000002349 well water Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 description 7
- 239000000523 sample Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
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- 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
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Abstract
An automatic geothermal well temperature measurement method comprises the following steps: a first temperature detector and a second temperature detector are arranged in the temperature detection instrument, and a control module, a travel module and a communication module are added in the temperature detection instrument; the temperature detection instrument judges whether the temperature detection instrument wades through a control module arranged inside; the travel module acquires the real-time well depth position of the temperature detection instrument; and the temperature detection instrument acquires the real-time temperature of the real-time well depth position in real time through the communication module, and compares and/or stores the real-time temperature. According to the method, the temperature signal and the depth signal are collected into the PLC system, whether the temperature measuring instrument is waded or not is automatically judged, the detection and correction of the real-time temperature value can be automatically carried out according to the preset submergence depth detection, a person does not need to keep recording beside the instrument all the time, the temperature corresponding to the depth can be automatically recorded by utilizing the PLC control instrument, the accuracy of data is improved, and the real-time property and the continuity of the data are ensured.
Description
Technical Field
The application relates to the technical field of geothermal well temperature measurement, in particular to an automatic geothermal well temperature measurement method and system.
Background
In the existing geothermal well temperature measurement system, a special person is required to observe the running depth of a trial rod in the running state, whether equipment enters water or not is determined according to experience or temperature jump, and after water enters water, the temperature corresponding to the depth is manually recorded after the equipment is submerged for a certain distance according to project specific requirements. The accuracy, the real-time performance and the continuity of the data are not guaranteed, and the data are recorded by occupying one person, so that the working efficiency is low.
Disclosure of Invention
The application aims to overcome the defects of the prior art and aims to provide an automatic geothermal well temperature measurement method and system.
According to one aspect of the present application, there is provided an automatic geothermal well temperature measurement method, comprising:
a first temperature detector and a second temperature detector are arranged in the temperature detection instrument, and a control module, a travel module and a communication module are added in the temperature detection instrument; the first temperature detector is positioned on the outer surface of the temperature detection instrument, and the second temperature detector is positioned inside the temperature detection instrument and is separated from the first temperature detector by a heat conducting material;
the temperature detection instrument judges whether the temperature detection instrument wades in water or not through a control module arranged inside;
the travel module acquires the real-time well depth position of the temperature detection instrument;
and the temperature detection instrument acquires the real-time temperature of the real-time well depth position in real time through the communication module, and compares and/or stores the measured real-time temperature.
Further, the temperature difference is set, deltaT is the temperature difference between air and geothermal well water, T1 Temporary face (L) Detecting a critical value for wading;
when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When delta T is less than or equal to delta T, judging that the temperature detecting instrument enters geothermal water from air;
when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When the temperature is equal to delta T, the temperature detecting instrument is judged to enter geothermal water from air.
Further, when the control module judges that the temperature detection instrument wades, the first temperature detector and the second temperature detector are started to measure the real-time temperature of the real-time well depth position, and the travel module is started.
Further, the control module is utilized to correct the real-time temperature measured by the temperature detection instrument:
△T 0 ＝T1-T2；
wherein DeltaT 0 The temperature difference of the real-time temperature value is obtained for the first temperature detector and the second temperature detector, T1 is the real-time temperature value obtained by the first temperature detector, and T2 is the real-time temperature value obtained by the second temperature detector;
the control module selects a temperature correction coefficient to correct the measured real-time temperature value Ti according to the temperature difference of the temperature value acquired by the first temperature detector and the second temperature detector at the real-time well depth position Hi of the temperature detection instrument, wherein i is a natural number:
the control module is internally preset with a first preset temperature difference delta T1, a second preset temperature difference delta T2, a third preset temperature difference delta T3 and a fourth preset temperature difference delta T4', wherein delta T1 < [ delta ] T2 < [ delta ] T3 < [ delta ] T4; the control module is also preset with a first preset temperature correction coefficient a1, a second preset temperature correction coefficient a2, a third preset temperature correction coefficient a3 and a fourth preset temperature correction coefficient a4, wherein a1 is more than a2 and less than a3 and less than a4;
when delta T0 is less than or equal to delta T1, a first temperature and flow velocity correction coefficient a1 is selected to correct an ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a1;
when DeltaT 1 < DeltaT0 is less than or equal to DeltaT 2, selecting a second preset flow rate correction coefficient a2 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a2;
when DeltaT 2 < DeltaT0 is less than or equal to DeltaT 3, selecting a third preset flow rate correction coefficient a3 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a3;
when DeltaT 3 < DeltaT0 is less than or equal to DeltaT 4, a fourth preset flow rate correction coefficient a4 is selected to correct the ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a4.
Further, the temperature detection instrument is lowered to perform temperature measurement by manually triggering a wading signal.
Further, each time the temperature instrument detecting instrument is lowered to a preset depth, real-time temperature value measurement is carried out, and the corresponding real-time well depth position and the real-time temperature value are stored.
According to another aspect of the present application, there is provided an automatic geothermal well temperature measuring system comprising:
the temperature detection instrument comprises a first temperature detector and a second temperature detector, and further comprises a control module, a stroke module and a communication module; the first temperature detector is positioned on the outer surface of the temperature detection instrument, and the second temperature detector is positioned inside the temperature detection instrument and is separated from the first temperature detector by a heat conducting material;
the control module is used for judging whether the temperature detection instrument wades in water or not;
the travel module is used for acquiring the real-time well depth position of the temperature detection instrument;
the temperature detection instrument is used for acquiring the real-time temperature of the real-time well depth position in real time through the communication module, and comparing and/or storing the measured real-time temperature.
Further, the control module comprises a wading judgment module for judging the temperature difference DeltaT between the air and the geothermal well water and the wading detection critical value T1 Temporary face (L) Judging whether the temperature detecting instrument wades or not:
when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When delta T is less than or equal to delta T, judging that the temperature detecting instrument enters geothermal water from air;
when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When the temperature is equal to delta T, the temperature detecting instrument is judged to enter geothermal water from air.
Further, the control module is further used for judging wading of the temperature detection instrument, starting the first temperature detector and the second temperature detector to measure real-time temperature of the real-time well depth position, and starting the travel module.
Further, the control module is further configured to correct the real-time temperature measured by the temperature detecting instrument:
△T 0 ＝T1-T2；
wherein DeltaT 0 The temperature difference of the real-time temperature value is obtained for the first temperature detector and the second temperature detector, T1 is the real-time temperature value obtained by the first temperature detector, and T2 is the real-time temperature value obtained by the second temperature detector;
the control module is used for correcting the measured real-time temperature value Ti according to the temperature difference of the temperature value obtained by the first temperature detector and the second temperature detector at the real-time well depth position Hi of the temperature detection instrument, wherein i is a natural number, and a temperature correction coefficient is selected:
the control module is internally preset with a first preset temperature difference delta T1, a second preset temperature difference delta T2, a third preset temperature difference delta T3 and a fourth preset temperature difference delta T4', wherein delta T1 < [ delta ] T2 < [ delta ] T3 < [ delta ] T4; the control module is also preset with a first preset temperature correction coefficient a1, a second preset temperature correction coefficient a2, a third preset temperature correction coefficient a3 and a fourth preset temperature correction coefficient a4, wherein a1 is more than a2 and less than a3 and less than a4;
when delta T0 is less than or equal to delta T1, a first temperature and flow velocity correction coefficient a1 is selected to correct an ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a1;
when DeltaT 1 < DeltaT0 is less than or equal to DeltaT 2, selecting a second preset flow rate correction coefficient a2 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a2;
when DeltaT 2 < DeltaT0 is less than or equal to DeltaT 3, selecting a third preset flow rate correction coefficient a3 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a3;
when DeltaT 3 < DeltaT0 is less than or equal to DeltaT 4, a fourth preset flow rate correction coefficient a4 is selected to correct the ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a4.
Further, the temperature detection device also comprises a manual start-stop switch, and the manual start-stop switch is used for manually triggering the wading signal to lower the temperature detection instrument for temperature measurement.
Further, the control module is further configured to measure a real-time temperature value once every time the temperature instrument detection instrument is lowered by a preset depth, and store the corresponding real-time well depth position and real-time temperature value.
Further, the temperature measuring device also comprises a power module, wherein the power module is used for supplying power to the control module, the temperature instrument detecting instrument, the travel module and the communication module.
Compared with the prior art, the application has the beneficial effects that:
(1) according to the automatic temperature measurement method of the geothermal well, the parameter values are preset according to the control module PLC, the temperature signals and the depth signals are collected into the PLC system and judged, whether the temperature measurement instrument is waded or not can be automatically judged, and the real-time temperature value can be automatically detected and corrected according to the preset submergence depth detection so as to obtain a more accurate and more real temperature value.
(2) The automatic temperature measurement system for the geothermal heat is utilized, a special person is not required to keep beside the instrument to record data of geothermal heat depth and temperature, the PLC is utilized to control the instrument to automatically record the temperature corresponding to the depth, the accuracy of the data is improved, and the real-time performance and the continuity of the data are ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
FIG. 1 is a flow chart of an automatic geothermal well temperature measurement method according to an embodiment of the application.
FIG. 2 is a block diagram of an automatic geothermal well temperature measurement system in accordance with an embodiment of the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Specific examples:
as shown in fig. 1, the embodiment of the application provides an automatic geothermal well temperature measurement method, which comprises the following steps:
s1, a first temperature detector and a second temperature detector are arranged in a temperature detection instrument, and a control module, a stroke module and a communication module are added in the temperature detection instrument; the first temperature detector is positioned on the outer surface of the temperature detection instrument, and the second temperature detector is positioned inside the temperature detection instrument and is spaced from the first temperature detector by a heat conducting material. The first temperature detector adopts an infrared thermometer or a light temperature sensor, and the second temperature detector also adopts an infrared thermometer or a light temperature sensor. The stroke module adopts a pulse encoder, the communication module is a wireless communication module, and the control module adopts a PLC.
S2, the temperature detection instrument judges whether the temperature detection instrument wades through a control module arranged inside. The judgment is carried out according to the following principle:
setting the temperature difference, delta T is the temperature difference between air and geothermal well water, T1 Temporary face (L) Detecting a critical value for wading; when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When delta T is less than or equal to delta T, judging that the temperature detecting instrument enters geothermal water from air; when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When >. DELTA.T, it is determined that the temperature detecting instrument is moved from air into geothermal water.
According to the wading monitoring in the step, according to the characteristic that the temperature in water and the ambient temperature have a temperature difference, the change amplitude of the temperature probe of the first temperature detector is monitored timely, when the change amplitude is larger than the conventional temperature fluctuation in the air, the temperature detector can be judged to be immersed in the water, and data are sent to the control module through the communication module to continue to execute the later step.
According to the geothermal well environment condition, the temperature difference between air and geothermal well water is estimated, the value is set, and when the temperature detected by the probe of the first temperature detector positioned on the outer side is larger than the set temperature difference, the control module acquires the information through the communication module and records the information, namely when the probe of the first temperature detector enters water from air and records once.
At this time, the operator acquires the information that the temperature detecting instrument has entered water by means of a display module such as a display screen, and can perform manual zero clearing, that is, zero clearing on the previous data, and perform a new round of data recording.
S3, when the control module judges that the temperature detection instrument wades, the first temperature detector and the second temperature detector are started to measure the real-time temperature of the real-time well depth position, and the travel module is started to acquire the real-time well depth position of the temperature detection instrument. And (3) measuring a real-time temperature value once when the temperature instrument detecting instrument is placed at a preset depth, and storing the corresponding real-time well depth position and the real-time temperature value.
Specifically, the position of the temperature detecting instrument wading is recorded as a starting position, the depth of the real-time well depth position is read and accessed, and a set of data is automatically recorded at a distance of a preset depth by setting the travel. For example, number 1, starting at 500 meters, and a travel of 10 meters is set, i.e., before the current depth is less than 500 meters, the probe automatically records a set of data for each 10 meters, and so on. Each section of travel with preset depth automatically records a group of data, and automatically files, and meanwhile, the recorded information also comprises time, date and other information, and the information is stored in a storage module. If the storage space is limited or the classified storage of the data is convenient, the data is exported and backed up after a group of deep wells are tested, and the original history records can be optionally cleared.
The pulse and circumference of the pulse encoder are set to a fixed value, which is related to the diameter of the wheel of the pulse encoder itself and the wellhead, by which the accuracy of the depth can be adjusted.
S4, the temperature detection instrument acquires the real-time temperature of the real-time well depth position in real time through the communication module, and compares and/or stores the measured real-time temperature.
In the step, the control module is utilized to correct the real-time temperature measured by the temperature detecting instrument:
△T 0 ＝T1-T2；
wherein DeltaT 0 The temperature difference of the real-time temperature value is obtained for the first temperature detector and the second temperature detector, T1 is the real-time temperature value obtained by the first temperature detector, and T2 is the real-time temperature value obtained by the second temperature detector;
the control module is used for correcting the measured real-time temperature value Ti according to the temperature difference of the temperature value acquired by the first temperature detector and the second temperature detector at the real-time well depth position Hi by the temperature detection instrument, wherein i is a natural number:
the control module is preset with a first preset temperature difference delta T1, a second preset temperature difference delta T2, a third preset temperature difference delta T3 and a fourth preset temperature difference delta T4', wherein delta T1 < [ delta ] T2 < [ delta ] T3 < [ delta ] T4; the control module is also preset with a first preset temperature correction coefficient a1, a second preset temperature correction coefficient a2, a third preset temperature correction coefficient a3 and a fourth preset temperature correction coefficient a4, wherein a1 is more than a2 and less than a3 and less than a4;
when delta T0 is less than or equal to delta T1, a first temperature and flow velocity correction coefficient a1 is selected to correct an ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a1;
when DeltaT 1 < DeltaT0 is less than or equal to DeltaT 2, selecting a second preset flow rate correction coefficient a2 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a2;
when DeltaT 2 < DeltaT0 is less than or equal to DeltaT 3, selecting a third preset flow rate correction coefficient a3 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a3;
when DeltaT 3 < DeltaT0 is less than or equal to DeltaT 4, a fourth preset flow rate correction coefficient a4 is selected to correct the ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a4.
Through the temperature difference according to first temperature detector and second temperature detector, promptly according to temperature detection instrument surface and inside difference in temperature, select suitable correction factor to revise the real-time temperature value of measurement, can make the real-time well depth position's of temperature measurement department change adjust according to the difference in temperature condition in real time to make the real-time temperature value of measurement remain accurate, true measured value all the time, can improve the real-time temperature measurement efficiency of geothermal well depths effectively, make temperature detection instrument be in the best operating condition all the time and carry out temperature measurement.
Specifically, the real-time temperature value is corrected by performing the real-time temperature value at the next depth based on the temperature difference between the first temperature detector and the second temperature detector at the previous depth.
In this embodiment, the operation distance monitoring and data storage of the temperature detecting instrument can also detect according to the following formula:
H2＝S+H1
wherein X2 is the next storage depth point, S is a preset recording interval, the value is set in the control module in advance, and X1 is the timely submerging depth. After each length point is recorded, the formula is automatically executed, the next storage point is calculated, and so on.
In this embodiment, the temperature detecting instrument may be further lowered to perform temperature measurement by acquiring information that the temperature detecting instrument has entered water by means of a display module such as a display screen, and manually triggering a wading signal. After the measurement is started, the control module automatically acquires and stores the real-time well depth position and the real-time temperature value at the real-time well depth position through the communication module.
In this embodiment, the geothermal well is measured in temperature, the parameter values are preset according to the control module PLC, the temperature signal and the depth signal are collected into the PLC system, and judgment is performed, so that whether the temperature measuring instrument is waded or not can be automatically judged, and detection and correction of the real-time temperature value can be automatically performed according to the preset submergence depth detection, so as to obtain a more accurate and more real temperature value.
By utilizing the automatic temperature measurement method of the local heat, a special person is not required to keep beside the instrument to record the data of the depth and the temperature of the geothermal heat, and the PLC is utilized to control the instrument to automatically record the temperature corresponding to the depth, so that the accuracy of the data is improved, and the real-time property and the continuity of the data are ensured.
Based on the same inventive concept, the embodiment of the application also provides an automatic geothermal well temperature measurement system, which comprises a temperature detection instrument.
As shown in fig. 2, the temperature detecting instrument includes a first temperature detector and a second temperature detector, and the temperature detecting instrument further includes a control module, a travel module and a communication module; the first temperature detector is positioned on the outer surface of the temperature detection instrument, and the second temperature detector is positioned inside the temperature detection instrument and is spaced from the first temperature detector by a heat conducting material; the first temperature detector adopts an infrared thermometer or a light temperature sensor, and the second temperature detector also adopts an infrared thermometer or a light temperature sensor. The stroke module adopts a pulse encoder, the communication module is a wireless communication module, and the control module adopts a PLC.
The control module is used for judging whether the temperature detection instrument wades into water or not; the judgment is carried out according to the following principle: setting a temperature difference, wherein DeltaT is the temperature difference of air and geothermal well water, and T1 is a wading detection critical value; when the wading detection critical value T1 obtained by the first temperature detector is less than or equal to delta T, judging that the temperature detecting instrument enters geothermal water from air; when the wading detection threshold value T1 obtained by the first temperature detector is >. DELTA.T, the temperature detection instrument is judged to enter the geothermal water from the air.
The travel module is used for acquiring the real-time well depth position of the temperature detection instrument, and the travel module adopts a pulse encoder. The pulse and circumference of the pulse encoder are set to a fixed value, which is related to the diameter of the wheel of the pulse encoder itself and the wellhead, by which the accuracy of the depth can be adjusted.
The temperature detection instrument is used for acquiring the real-time temperature of the real-time well depth position in real time through the communication module, and comparing and/or storing the measured real-time temperature.
In this embodiment, the control module is further configured to determine that the temperature detecting instrument is wading, start the first temperature detector and the second temperature detector to measure the real-time temperature of the real-time well depth position, and start the travel module, where the travel module obtains the real-time well depth position where the temperature detecting instrument is located. The control module is also used for measuring a real-time temperature value once when the temperature instrument detecting instrument is placed at a preset depth, and storing the corresponding real-time well depth position and the real-time temperature value.
Specifically, the position of the temperature detecting instrument wading is recorded as a starting position, the depth of the real-time well depth position is read and accessed, and a set of data is automatically recorded at a distance of a preset depth by setting the travel. For example, number 1, starting at 500 meters, and a travel of 10 meters is set, i.e., before the current depth is less than 500 meters, the probe automatically records a set of data for each 10 meters, and so on. Each section of travel with preset depth automatically records a group of data, and automatically files, and meanwhile, the recorded information also comprises time, date and other information, and the information is stored in a storage module. If the storage space is limited or the classified storage of the data is convenient, the data is exported and backed up after a group of deep wells are tested, and the original history records can be optionally cleared.
Specifically, the control module is also used for correcting the real-time temperature measured by the temperature detection instrument:
△T 0 ＝T1-T2；
wherein DeltaT 0 The temperature difference of the real-time temperature value is obtained for the first temperature detector and the second temperature detector, T1 is the real-time temperature value obtained by the first temperature detector, and T2 is the real-time temperature value obtained by the second temperature detector;
the control module is used for correcting the measured real-time temperature value Ti according to the temperature difference of the temperature value acquired by the first temperature detector and the second temperature detector according to the temperature detection instrument at the real-time well depth position Hi, wherein i is a natural number:
the control module is preset with a first preset temperature difference delta T1, a second preset temperature difference delta T2, a third preset temperature difference delta T3 and a fourth preset temperature difference delta T4', wherein delta T1 < [ delta ] T2 < [ delta ] T3 < [ delta ] T4; the control module is also preset with a first preset temperature correction coefficient a1, a second preset temperature correction coefficient a2, a third preset temperature correction coefficient a3 and a fourth preset temperature correction coefficient a4, wherein a1 is more than a2 and less than a3 and less than a4;
when delta T0 is less than or equal to delta T1, a first temperature and flow velocity correction coefficient a1 is selected to correct an ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a1;
when DeltaT 1 < DeltaT0 is less than or equal to DeltaT 2, selecting a second preset flow rate correction coefficient a2 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a2;
when DeltaT 2 < DeltaT0 is less than or equal to DeltaT 3, selecting a third preset flow rate correction coefficient a3 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a3;
when DeltaT 3 < DeltaT0 is less than or equal to DeltaT 4, a fourth preset flow rate correction coefficient a4 is selected to correct the ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a4.
Through the temperature difference according to first temperature detector and second temperature detector, promptly according to temperature detection instrument surface and inside difference in temperature, select suitable correction factor to revise the real-time temperature value of measurement, can make the real-time well depth position's of temperature measurement department change adjust according to the difference in temperature condition in real time to make the real-time temperature value of measurement remain accurate, true measured value all the time, can improve the real-time temperature measurement efficiency of geothermal well depths effectively, make temperature detection instrument be in the best operating condition all the time and carry out temperature measurement.
Specifically, the real-time temperature value is corrected by performing the real-time temperature value at the next depth based on the temperature difference between the first temperature detector and the second temperature detector at the previous depth.
The geothermal well automatic temperature measurement system in the embodiment further comprises a manual start-stop switch and a power module.
Specifically, the manual start-stop switch is used for manually triggering the wading signal to lower the temperature detection instrument for temperature measurement.
The power supply module is used for supplying power to the control module, the temperature instrument detection instrument, the travel module, the communication module and the display module.
In order to further improve the accuracy of the temperature measurement of the geothermal well automatic temperature measurement system, at least two groups of automatic temperature measurement systems are arranged in parallel in one geothermal well, measurement is performed simultaneously, and finally, a plurality of groups of parallel data are subjected to statistical analysis to obtain a real-time temperature value.
Specifically, rollers with the same number as the automatic temperature measurement system are arranged at the wellhead of the geothermal well side by side, a controller is set to control the rollers, the rotating speed of the rollers and the tension of cables are controlled to keep the rollers consistent, cables are synchronously laid down, and the ends of the cables are connected with the automatic temperature measurement system.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An automatic temperature measurement method for a geothermal well is characterized by comprising the following steps of: comprising the following steps:
a first temperature detector and a second temperature detector are arranged in the temperature detection instrument, and a control module, a travel module and a communication module are added in the temperature detection instrument; the first temperature detector is positioned on the outer surface of the temperature detection instrument, and the second temperature detector is positioned inside the temperature detection instrument and is separated from the first temperature detector by a heat conducting material;
the temperature detection instrument judges whether the temperature detection instrument wades in water or not through a control module arranged inside;
the travel module acquires the real-time well depth position of the temperature detection instrument;
and the temperature detection instrument acquires the real-time temperature of the real-time well depth position in real time through the communication module, and compares and/or stores the measured real-time temperature.
2. The method for automatically measuring the temperature of a geothermal well according to claim 1, wherein: setting the temperature difference, delta T is the temperature difference between air and geothermal well water, T1 Temporary face (L) Detecting a critical value for wading;
when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When delta T is less than or equal to delta T, judging that the temperature detecting instrument enters geothermal water from air;
when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When the temperature is equal to delta T, the temperature detecting instrument is judged to enter geothermal water from air.
3. The method for automatically measuring the temperature of a geothermal well according to claim 2, wherein: when the control module judges that the temperature detection instrument wades, the first temperature detector and the second temperature detector are started to measure the real-time temperature of the real-time well depth position, and the travel module is started.
4. The method for automatically measuring the temperature of a geothermal well according to claim 3, wherein: correcting the real-time temperature measured by the temperature detecting instrument by using the control module:
△T0＝T1-T2；
wherein Δt0 is a temperature difference between the real-time temperature values obtained by the first temperature detector and the second temperature detector, T1 is a real-time temperature value obtained by the first temperature detector, and T2 is a real-time temperature value obtained by the second temperature detector;
the control module selects a temperature correction coefficient to correct the measured real-time temperature value Ti according to the temperature difference of the temperature value acquired by the first temperature detector and the second temperature detector at the real-time well depth position Hi of the temperature detection instrument, wherein i is a natural number:
the control module is internally preset with a first preset temperature difference delta T1, a second preset temperature difference delta T2, a third preset temperature difference delta T3 and a fourth preset temperature difference delta T4', wherein delta T1 < [ delta ] T2 < [ delta ] T3 < [ delta ] T4; the control module is also preset with a first preset temperature correction coefficient a1, a second preset temperature correction coefficient a2, a third preset temperature correction coefficient a3 and a fourth preset temperature correction coefficient a4, wherein a1 is more than a2 and less than a3 and less than a4;
when delta T0 is less than or equal to delta T1, a first temperature and flow velocity correction coefficient a1 is selected to correct an ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a1;
when DeltaT 1 < DeltaT0 is less than or equal to DeltaT 2, selecting a second preset flow rate correction coefficient a2 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a2;
when DeltaT 2 < DeltaT0 is less than or equal to DeltaT 3, selecting a third preset flow rate correction coefficient a3 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a3;
when DeltaT 3 < DeltaT0 is less than or equal to DeltaT 4, a fourth preset flow rate correction coefficient a4 is selected to correct the ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a4.
5. The method for automatic temperature measurement of a geothermal well according to claim 4, wherein: and the temperature detection instrument is lowered to carry out temperature measurement by manually triggering a wading signal.
6. The method for automatic temperature measurement of a geothermal well according to claim 5, wherein: and each time the temperature instrument detecting instrument is lowered to a preset depth, measuring a real-time temperature value, and storing the corresponding real-time well depth position and the real-time temperature value.
7. An automatic temperature measurement system of geothermal well, its characterized in that: the temperature detection instrument comprises a first temperature detector and a second temperature detector, and further comprises a control module, a stroke module and a communication module; the first temperature detector is positioned on the outer surface of the temperature detection instrument, and the second temperature detector is positioned inside the temperature detection instrument and is separated from the first temperature detector by a heat conducting material;
the control module is used for judging whether the temperature detection instrument wades in water or not; the control module comprises a wading judgment module for judging the temperature difference DeltaT between air and geothermal well water and a wading detection critical value T1 Temporary face (L) Judging whether the temperature detecting instrument wades or not: when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When delta T is less than or equal to delta T, judging that the temperature detecting instrument enters geothermal water from air; when the wading detection critical value T1 obtained by the first temperature detector Temporary face (L) When the temperature is > [ delta ] T, judging that the temperature detection instrument enters geothermal water from air;
the travel module is used for acquiring the real-time well depth position of the temperature detection instrument;
the temperature detection instrument is used for acquiring the real-time temperature of the real-time well depth position in real time through the communication module, and comparing and/or storing the measured real-time temperature.
8. The geothermal well automatic temperature measurement system of claim 7, wherein: the control module is also used for judging wading of the temperature detection instrument, starting the first temperature detector and the second temperature detector to measure the real-time temperature of the real-time well depth position, and starting the travel module.
9. The geothermal well automatic temperature measurement system of claim 8, wherein: the control module is also used for correcting the real-time temperature measured by the temperature detection instrument:
△T0＝T1-T2；
wherein Δt0 is a temperature difference between the real-time temperature values obtained by the first temperature detector and the second temperature detector, T1 is a real-time temperature value obtained by the first temperature detector, and T2 is a real-time temperature value obtained by the second temperature detector;
the control module is used for correcting the measured real-time temperature value Ti according to the temperature difference of the temperature value obtained by the first temperature detector and the second temperature detector at the real-time well depth position Hi of the temperature detection instrument, wherein i is a natural number, and a temperature correction coefficient is selected:
the control module is internally preset with a first preset temperature difference delta T1, a second preset temperature difference delta T2, a third preset temperature difference delta T3 and a fourth preset temperature difference delta T4', wherein delta T1 < [ delta ] T2 < [ delta ] T3 < [ delta ] T4; the control module is also preset with a first preset temperature correction coefficient a1, a second preset temperature correction coefficient a2, a third preset temperature correction coefficient a3 and a fourth preset temperature correction coefficient a4, wherein a1 is more than a2 and less than a3 and less than a4;
when delta T0 is less than or equal to delta T1, a first temperature and flow velocity correction coefficient a1 is selected to correct an ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a1;
when DeltaT 1 < DeltaT0 is less than or equal to DeltaT 2, selecting a second preset flow rate correction coefficient a2 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a2;
when DeltaT 2 < DeltaT0 is less than or equal to DeltaT 3, selecting a third preset flow rate correction coefficient a3 to correct the ith real-time temperature value Ti, wherein the real-time temperature value at the corrected real-time well depth position Hi is Ti x a3;
when DeltaT 3 < DeltaT0 is less than or equal to DeltaT 4, a fourth preset flow rate correction coefficient a4 is selected to correct the ith real-time temperature value Ti, and the real-time temperature value at the corrected real-time well depth position Hi is Ti x a4.
10. The geothermal well automatic temperature measurement system of claim 9, wherein: the manual start-stop switch is used for manually triggering the wading signal to lower the temperature detection instrument for temperature measurement;
the control module is also used for measuring a real-time temperature value once when the temperature instrument detecting instrument is placed at a preset depth, and storing the corresponding real-time well depth position and the real-time temperature value.
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