Well management method

Abstract

To provide a well management system and a well management method that are highly practical and unprecedented.SOLUTION: A management system for a well 1, comprising: a casing body 2 provided in a drilling hole 50 in the ground and having a strainer section 2a; and a lift pump 3 provided inside the casing body 2, includes: pump discharge measurement means configured to measure a discharge amount of the lift pump 3; water level measurement means configured to measure a water level inside the casing body 2; and groundwater introduction amount measurement means configured to measure the amount of groundwater introduced into the casing body 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention ,well This relates to household management methods. [Background technology]

[0002] Conventionally, the management of a well, which is equipped with a casing body with a strainer section installed in a borehole in the ground and a pumping pump installed within the casing body, has been carried out mainly based on the experience and intuition of the manager who manages the well, such as by pulling up the pumping pump for inspection at any time (for example, after the number of years of use) and cleaning the casing body (strainer section) (see Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-74092 A [Patent Document 2] Patent No. 7204253 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional well management has resulted in wasteful practices such as pulling up and inspecting the pumping pump when there is nothing wrong with it, or, conversely, the pumping pump may suffer from cavitation due to a drop in the water level in the well (casing body) (the area above the water in the well becomes filled with bubbles made of gas generated from the soil), or may break down due to continued operation without noticing a decrease in function, causing the pumping pump to suddenly stop.In addition, the casing body (strainer section) may become clogged and left unattended, which not only disrupts the balance between supply and demand of groundwater in the well, but also causes dirt to firmly adhere to the strainer section, which cannot be cleared even by cleaning, making it necessary to replace the casing body.As a result, the current situation is that proper management is not being carried out in response to the current state of the well.

[0005] The present invention has been made in consideration of the above-mentioned problems, and is a very practical device that has never existed before. Nai A method of household management was developed. [Means for solving the problem]

[0006] The gist of the present invention will now be described with reference to the accompanying drawings.

[0007] A well management method using the well management system described below, wherein the pumping amount of the lifting pump 3 is calculated by the pumping amount measuring means, and when the pumping amount becomes 70% or less of the pumping capacity of the lifting pump 3, Based on the operation time of the water pump 3 measured by the pump operation time measuring means, the number of operations of the water pump 3 measured by the pump operation number measuring means, and the change in the frequency of the power source supplied to the water pump 3, Repair or replace the water pump 3 The water level in the casing body 2 is measured by the water level measuring means, and the position of the water lifting pump 3 is controlled so as to maintain a water depth of 150 m or more. The present invention relates to a well management method characterized by the above.

[0008] Note A management system for a well (1) including a casing body (2) having a strainer (2a) installed in a borehole (50) in the ground and a water pump (3) installed in the casing body (2), the management system further including a water pumping amount measuring means for measuring the water pumping amount of the water pumping pump (3), a water level measuring means for measuring the water level in the casing body (2), and a groundwater introduction amount measuring means for measuring the amount of groundwater introduced into the casing body (2). The water pump 3 is configured to stop once when the amount of water pumped reaches a set amount, and then start operation when a predetermined operation start condition is met. The water pump 3 is equipped with a pump operation time measuring means for measuring the operation time of the water pump 3 and a pump operation number measuring means for measuring the number of operations of the water pump 3. The water pump 3 is a motor pump and has an inverter for varying the frequency of the power source supplied to the water pump 3. Well management system.

[0009] In addition, the well management method described in claim 1 is characterized in that when the amount of groundwater introduced into the casing body 2 measured by the groundwater introduction amount measuring means becomes 45 L / min or less, this becomes the criterion for whether to replace the casing body 2 or whether to continue using the borehole 50. Effect of the Invention

[0010] Since the present invention is configured as described above, it is possible to easily and effectively manage wells, and is thus extremely practical and unprecedented. Nai This will be a method of household management. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is an explanatory cross-sectional view of a well 1 according to the present embodiment. [Diagram 2] FIG. 2 is a flowchart showing a well management method using the well management system of this embodiment. [Diagram 3] FIG. 2 is a flowchart showing a well management method using the well management system of this embodiment. [Figure 4] 2 is a graph showing the pumping rate of a well 1 according to the present embodiment. [Diagram 5] 2 is a graph showing the pumping rate of a well 1 according to the present embodiment. [Figure 6] 4 is a graph showing the water level of a well 1 according to the present embodiment. FIG. [Figure 7] 4 is a graph showing the operation time of the water pump 3 according to the present embodiment. FIG. [Figure 8] 4 is a graph showing the number of operations of the water pump 3 according to the present embodiment. FIG. [Figure 9] FIG. 4 is a graph showing the frequency of the water pump 3 according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] A preferred embodiment of the present invention will be briefly described below with reference to the drawings to illustrate the operation of the present invention.

[0013] In the present invention, a pumping volume measuring means measures the pumping volume of the pumping pump 3, a water level measuring means measures the water level in the casing body 2, and a groundwater introduction volume measuring means measures the amount of groundwater introduced into the casing body 2. Using the measurement results from these measuring means, the current state of the well 1 (mainly the pumping pump 3 and the casing body 2) can be grasped on the ground and appropriate action can be taken.

[0014] Specifically, the measurement results of the pumping volume of the lifting pump 3 serve as an indicator for checking whether the lifting pump 3 is normal or not, the measurement results of the water level in the casing body 2 serve as an indicator for checking whether the environment is suitable for the operation of the lifting pump 3 (an environment where cavitation does not occur), the measurement results of the water level in the casing body 2 serve as an indicator for checking whether the casing body 2 (strainer section) is clogged, and the measurement results of the amount of groundwater introduced into the casing body 2 serve as an indicator for checking the soundness of the borehole 50.

[0015] Therefore, inspection and repair of the lifting pump 3 can be performed at the optimal timing, thereby extending the life of the lifting pump 3, and the lifting pump 3 can be replaced at the optimal timing so as not to affect the operation of the groundwater user (e.g. a hot spring facility).Furthermore, it is possible to determine whether or not to clean the well 1 (casing body 2) and the soundness of the borehole 50, and to determine the timing to construct a new well (borehole 50). EXAMPLES

[0016] A specific embodiment of the present invention will now be described with reference to the drawings.

[0017] This embodiment is a management system for a well 1 (well equipment) including a casing body 2 provided in a borehole 50 in the ground and having a strainer portion 2a, and a water pump 3 provided within the casing body 2.

[0018] In this embodiment, as shown in FIG. 1, the well 1 to be cleaned is a hot spring well (groundwater is used at a hot spring facility), and a borehole 50 of about 1500 m is drilled with a diameter of about 25 cm (cross-sectional area of ​​0.0490625 m). 2 The casing body 2 is constructed by connecting a large number of pipe members 2' of different lengths, and a strainer section 2a (strainer section 2a having a total length of about 400m within an area of ​​800m to 1,500m underground in the casing body 2) is provided at the lower end and midway point (the water source portion) of the casing body 2, in which the pipe members 2' have a number of slit-shaped water holes 2a' (width about 6 to 12mm, length about 10 to 30cm) arranged in parallel in the circumferential direction and having a length in the longitudinal direction of the casing body 2. Furthermore, a lifting pipe 4 with a lifting pump 3 (motor pump) is provided at the lower end within the casing body 2. The lifting pump 3 is located 300m underground.

[0019] The specifications of the water pump 3 used in this embodiment are 5.5 kW x 50 Hz x 3φ x 200 V (27.5 A) / maximum water pumping amount (105 L / min) x maximum head (139 mH).

[0020] In this embodiment, the pumping pump 3 is operated to maintain a pumping rate of 70% or less of the maximum possible pumping rate when drilling the well 1, and is controlled so that the pumping pump 3 is always at a water depth position (above the so-called overburden water level of 150 m) in the well 1 (casing body 2) where cavitation does not occur. As mentioned above, the area above the water in the well 1 (in this embodiment, the area up to a water depth of about 140 m) is filled with bubbles made of gas generated from the soil, and if the pumping pump 3 is placed in this area, it becomes a state where cavitation is likely to occur.

[0021] This embodiment also has a control device (computer system) that controls the operation of the water pump 3, and under the control of this control device, the water pump 3 is configured to stop when the amount of water pumped reaches a set amount (a set amount according to the conditions of the destination of use), i.e., when the amount of water stored in the water tank increases to a predetermined amount, and then start operating when the operation start condition after operation stop is met, i.e., after the amount of water stored in the water tank falls below the predetermined amount. Note that, with regard to the above-mentioned operation start condition, the water pump 3 may be configured to start operating after a predetermined time has elapsed.

[0022] In addition, the control device is provided with an inverter (inverter circuit).

[0023] This inverter converts the power supply (DC voltage) supplied to the water pump 3 into AC voltage of a predetermined frequency and outputs it as driving power for the water pump 3.

[0024] Therefore, by providing an inverter, the frequency (rotation speed) of the water pump 3 can be set to any value depending on the required amount of water to be pumped, thereby reducing electricity consumption to a minimum, enabling cost-effective operation, and also achieving a longer life for the water pump 3.

[0025] In this embodiment, the frequency during normal operation is set to 25 Hz (the motor rotation speed of the water pump 3 is 1500 rpm). Of course, the normal operation is not limited to the above.

[0026] In addition, this embodiment is equipped with a pumping volume measuring means, a water level measuring means, a groundwater introduction volume measuring means, a pump operation time measuring means, and a pump operation count measuring means.The data measured by each of these measuring means is processed by the aforementioned control device 5, and the operation of each instrument is controlled based on the processing results by this control device 5.

[0027] The pumping amount measuring means is configured to provide a water volume measuring device (not shown, for example, impeller type, electromagnetic type, differential pressure type, vortex type, etc.) on the pumping pipe 3 and periodically measure the pumping amount per unit time of the pumping pump 3. The measurement results from this pumping amount measuring means are sent to the control device and processed (graphed in chronological order as shown in Figures 4 and 5).

[0028] The water level measurement means is configured to provide a water level gauge in the water pump 3 and periodically measure the water level in the casing body 2. The measurement results by this water level measurement means are sent to the control device and processed (graphed in chronological order as shown in Figure 6).

[0029] The groundwater introduction amount measuring means is configured to periodically measure the amount of groundwater introduced (the amount of spring water) into the casing body 2 by a measuring method described later.

[0030] The amount of groundwater introduced into the casing body 2 (L / min) is calculated by using the water level gauge of the lifting pump 3 and calculating the volume of water (m 3 ) as a reference, and the predetermined elevated water level is, for example, the natural water level. However, the predetermined elevated water level may be any water level other than the natural water level.

[0031] The amount of groundwater introduced (L / min) into the casing body 2 may be measured by, in addition to the above-mentioned measuring method, for example, attaching a flow meter to the lift pipe or the lift pump 3 to measure the flow rate.

[0032] In this embodiment, as described later, the required amount of groundwater introduced is 45 L / min, and this is managed as the minimum value.

[0033] The pump operation time measuring means is provided in the control device 5, and is configured to measure the operation time of the water lifting pump 3 described above and to graph this in chronological order (see FIG. 7).

[0034] The water pump 3 in this embodiment is configured to stop or start depending on the usage conditions of the place of use (hot spring facility); that is, it stops when the amount of water stored in the water tank increases to a predetermined amount as described above, and then starts operating when the conditions for starting operation after stopping are met, i.e., after the amount of water stored in the water tank falls below a predetermined amount. However, normally, as long as there are no abnormalities in the water pump 3 and it is pumping only the required amount of water, the operating time per day will be almost constant.

[0035] Therefore, if the operating time of the pumping pump 3 is measured periodically and graphed over time, and if the operating time tends to be long, it can be determined that the pumping capacity of the pumping pump 3 is declining. In other words, if the operating time is long, in combination with the number of times the pumping pump 3 has been operated (described later), it is possible that the function of the pumping pump 3 is declining due to wear on the bearings, impeller, drive shaft, etc., of the pumping pump 3, and a decision is made to repair the parts by replacing them or to replace them with new ones.

[0036] The pump operation count measuring means is provided in the control device 5, and is configured to measure (record and store) the number of operations of the water lifting pump 3 described above, and to graph this in chronological order (see FIG. 8).

[0037] Therefore, similarly to the pump operation time measurement means, the number of operations of the pumping pump 3 is periodically measured and graphed over time. If the number of operations (number of stops) is showing a decreasing trend, it is determined that the pumping capacity of the pumping pump 3 is declining. In other words, when the number of operations of the pumping pump 3 is low, in combination with the operation time of the pumping pump 3 described above, it is possible that the function of the pumping pump 3 is declining due to wear of the bearings, impeller, drive shaft, etc., of the pumping pump 3, and a decision is made to repair the parts by replacing them or to replace them with new parts.

[0038] Furthermore, in this embodiment, the frequency of the pumping pump 3 can be changed by an inverter, and the change in frequency to obtain the required pumping volume is graphed over time (see FIG. 9), and if the frequency tends to be higher, it is determined that the pumping capacity of the pumping pump 3 is declining. In other words, when the frequency of the pumping pump 3 is high, in combination with the operating time and number of times of operation of the pumping pump 3 described above, it is possible that the function is declining due to wear on the bearings, impeller, drive shaft, etc. of the pumping pump 3, and a decision is made to repair the parts by replacing them or to replace them with new parts.

[0039] A well management method using the well management system according to this embodiment having the above configuration will be described.

[0040] The pumping volume measuring means measures the pumping volume of the pumping pump 3, the water level measuring means measures the water level inside the casing body 2, the groundwater introduction volume measuring means measures the volume of groundwater introduced into the casing body 2, the pump operation count measuring means measures the number of times the pumping pump 3 is operated in the pump operation stop control means, and the pump operation time measuring means measures the operation time of the pumping pump 3.From the measurement results by these measuring means, the current state of the well 1 (mainly the pumping pump 3, casing body 2 and borehole 50) can be grasped on the ground and appropriate action can be taken.

[0041] Hereinafter, the flow of the work (inspection) for checking the current state of the water pump 3 and the casing body 2 of this embodiment will be described with reference to the flow charts of FIGS.

[0042] First, the measurement result of the pumping amount of the pumping pump 3 by the pumping amount measuring means serves as an index for checking whether the pumping pump 3 is normal or not.

[0043] The pumping volume of the pumping pump 3 is calculated using the pumping volume measuring means (step 100). If the pumping volume is 70% or more of the pumping capacity of the pumping pump 3 (the pumping capacity based on the pump design), the pumping pump 3 is deemed normal (Y) and the process proceeds to step 101.

[0044] On the other hand, if the pumping volume is 70% or less of the pumping capacity of the pumping pump 3, it is determined that there is an abnormality in the pumping pump 3 (N), and the process proceeds to step 102. Using the graph obtained by the processing device, the following checks are performed: "Confirmation of understanding of pumping pump operation time," "Confirmation of number of times the pumping pump has been operated," and "Confirmation of the pumping pump operation frequency." If all check items are cleared (Y), the nature of the fault in the pumping pump 3 can be determined and most cases can be dealt with by repair, so repair is carried out (step 103) and the process proceeds to step 101. On the other hand, if the check is not cleared (N), the pumping pump 3 is replaced with a new one (step 104), and the process proceeds to step 101.

[0045] Next, the groundwater level in the casing body 2 is measured (step 101), and if it is confirmed that the environment is suitable for the operation of the lifting pump 3 (an environment with a depth of 150 m or more where cavitation does not occur), it is determined that there is no abnormality (Y) in the lifting pump 3 at a depth of 150 m or more and the process proceeds to step 105.

[0046] On the other hand, if it is confirmed that the environment is not suitable for the operation of the lifting pump 3 (an environment with a water depth of less than 150 m where cavitation is likely to occur), it is determined that the lifting pump 3 is not at a water depth of 150 m and there is an abnormality (N), that is, it is determined that the casing body 2 (strainer section 2a) is clogged, and the strainer section 2a is cleaned according to Patent Publication 2023-74092 or Patent No. 7204253 (step 106), and the groundwater level in the casing body 2 is measured again (step 107). If it is confirmed that the environment is suitable for the operation of the lifting pump 3 (an environment with a water depth of 150 m or more where cavitation does not occur), it is determined that the lifting pump 3 is at a water depth of 150 m or more and there is no abnormality (Y), and the process proceeds to step 105. If the situation still does not improve, it is determined that another borehole 50 needs to be dug and a new well 1 needs to be constructed (step 108) or the casing body 2 needs to be replaced.

[0047] Next, the amount of groundwater introduced into the casing body 2 is measured by the groundwater introduction amount measuring means (step 105), and if the amount of spring water is equal to or greater than a predetermined amount (45 L / min), the borehole 50 is judged to be normal (Y) and the inspection is terminated, whereas if the amount of spring water is less than the predetermined amount (45 L / min), the borehole 50 is judged to be abnormal (N), and it is judged that another borehole 50 needs to be dug and a new well 1 needs to be constructed (step 108) or the casing body 2 needs to be replaced. In other words, the measurement result of the amount of groundwater introduced into the casing body 2 also serves as an indicator for checking whether the casing body 2 (strainer portion 2a) is clogged or not.

[0048] Since this embodiment is configured as described above, inspection and repair of the lifting pump 3 can be performed at the optimal timing, thereby extending the life of the lifting pump 3, and the lifting pump 3 can be replaced at the optimal timing so as not to affect the operation of the user of the groundwater (e.g. a hot spring facility).Furthermore, it is possible to determine whether or not to clean the well 1 (casing body 2) and the soundness of the borehole 50, and to determine the timing to construct a new well (borehole 50).

[0049] In addition, in this embodiment, the water pumping pump 3 is configured to start operating when the pumping amount reaches a set amount or when the operation start conditions are met after it has been temporarily stopped, and is equipped with a pump operation time measurement means for measuring the operation time of the water pumping pump 3, so that the status of the water pumping pump 3 can be judged.

[0050] In addition, in this embodiment, the pumping pump 3 is configured to start operating when the pumping amount reaches a set amount, or when the operation start conditions are met after it has been temporarily stopped, and is equipped with a pump operation count measuring means for measuring the number of times the pumping pump 3 is operated, so that the status of the pumping pump 3 can be judged in this regard as well.

[0051] Furthermore, in this embodiment, the water pump 3 is a motor pump and has an inverter that varies the frequency of the power supplied to the water pump 3, so that the status of the water pump 3 can be judged from this point as well.

[0052] In this embodiment, by taking into consideration the material balance between the groundwater pumped from the well 1 and the destination (hot spring facility) where it is used, it becomes possible to consider and manage the water pump 3.

[0053] Specifically, the cause of the decrease in the pumping amount when there is no change in the operation time of the water pump 3 is identified.

[0054] This can be determined by grasping the pumping amount of the water pump 3 by frequency (this can be determined even if operation is not managed by an inverter).

[0055] When there is a change in the operating time of the water pump 3, other factors may be considered.

[0056] When the balance of uses of pumped groundwater (hot spring facilities) is disturbed, the balance of uses is adjusted.

[0057] As a countermeasure, if it is impossible to stabilize the material balance of the pumped hot spring water at the user's end, replacement of the lift pump 3 will be considered.

[0058] When the pumping volume decreases when there is no change in the operating time of the lifting pump 3, check the operating time and pumping volume of the lifting pump 3, and check the results of the pumping volume by frequency of the lifting pump 3 (check the pumping volume by frequency of the lifting pump 3 being pumped, and check the change in the pumping volume over time).

[0059] The pumping rate of the water pump 3 at each frequency is checked, any decline in the pumping rate is checked, any changes over time are checked, and replacement of the water pump 3 is considered.

[0060] Also, check the number of times the water pump 3 is operated (number of times it is started and stopped).

[0061] If the balance of the number of pumps 3 in operation is disturbed (if the material balance of the uses of the pumped hot spring water is disturbed, the uses will be balanced), discussions will be held to balance the uses.

[0062] Each of the components of this embodiment will be described in detail below.

[0063] <Method of determining the operation time of the water pump 3> Rather than simply knowing the operating hours of the water pump 3, the information obtained will be expanded and used as a source of information for further activities. In addition, by understanding the operating time of the water pump 3, the decay in the capacity of the water pump is understood. It also enables the attenuation of the capacity of the water pump 3 to be compared with the pump performance curve at the time the pump was installed.

[0064] <Checking the number of times water pump 3 has been operated> The number of times the lift pump 3 is operated is determined depending on the condition of the water tank after the hot spring water has been discharged. Normally, the instructions for using the lift pump 3 state that the operation of the lift pump 3 should be kept as small as possible. In this embodiment, however, this is addressed by employing an inverter as a method for managing the operation of the lift pump 3.

[0065] <Check the operating frequency of the water pump> The operating frequency of the water pump 3 was not simply lowered, but various attempts were made to establish an appropriate frequency, and it became possible to grasp the extent of energy saving.

[0066] <Well water level is 150m above the location of pump 3> The reason for setting the groundwater level at 150m above the level of lift pump 3 is that it is generally believed that the general method of management is to set the groundwater level at 100m above the level of lift pump 3. However, after reviewing this area based on the water level of the well, it was determined that it would be possible to clear up issues such as methane gas contained in the water level 150m above the level of lift pump 3.

[0067] <Cleaning of strainer part 2a (well spring water strainer) in a well> In conventional methods for cleaning the strainer section 2, the cause was thought to be the negative pressure that occurs in the casing body 2 when the strainer section 2a is cleaned, and this was carried out without any doubt. However, the present inventor has clarified the cause of this and has implemented the techniques disclosed in Patent Nos. 7204253 and 7311195 when cleaning the strainer section 2.

[0068] <Understanding the required amount of pumping (spring water volume) of 45L / min> By focusing on the relationship with the material balance of Well 1, it became possible to establish a method that would enable the required pumping. In addition, by focusing on the relationship with the material balance of Well 1 and determining the required pumping volume from the monthly pumping volume of pumping pump 3, and by making efforts to reduce the load on Well 1, it became possible to determine the appropriate pumping volume for Well 1.

[0069] <Water level of well 1 (m)> The water level of Well 1 has been stable at over 150m, which is to reduce the spring water load of the well. but It became possible.

[0070] <Water pumping volume per hour (L / min)> By taking into consideration its relationship with water pump 3 and managing it in an appropriate manner, stable water pumping has become possible.

[0071] It was determined that the amount of water pumped per hour (L / min) could be calculated from the monthly operating hours of the water pump 3, and this was used as an aid in the operation management of the water pump 3.

[0072] < Pumping capacity (m 3 / m), operating time (hours), frequency (Hz) and number of operations (number of pumping operations / month) By taking into consideration the relationship with water pump 3 and managing it in an appropriate manner, the stability of water pumping became clear.

[0073] Incidentally, the present invention is not limited to the present embodiment, and the specific configuration of each component can be designed as appropriate. [Explanation of symbols]

[0074] 1. Well 2 Casing body 2a Strainer section 3. Water Pump 50 Borehole

Claims

1. A well management system comprising a casing body having a strainer section installed in a borehole in the ground and a pumping pump installed within the casing body, characterized in that the well management system further comprises a pumping volume measuring means for measuring the pumping volume of the pumping pump, a water level measuring means for measuring the water level within the casing body, and a groundwater introduction volume measuring means for measuring the amount of groundwater introduced into the casing body.

2. In the well management system described in claim 1, the lifting pump is configured to start operating when the pumping amount reaches a set amount or when an operation start condition is met after being temporarily stopped, and the well management system is characterized in that it is equipped with a pump operation time measurement means for measuring the operation time of the lifting pump.

3. In the well management system described in any one of claims 1 and 2, the lifting pump is configured to start operating when the pumping amount reaches a set amount or when an operation start condition is met after being temporarily stopped, and the well management system is characterized in that it is equipped with a pump operation count measuring means for measuring the number of times the lifting pump is operated.

4. 3. A well management system according to claim 1, wherein the water pump is a motor pump and has an inverter for varying the frequency of the power supply supplied to the water pump.

5. 4. A well management system according to claim 3, wherein the water pump is a motor pump and has an inverter for varying the frequency of the power supply supplied to the water pump.

6. A well management method using the well management system described below, characterized in that the pumping volume of the lifting pump is calculated using the pumping volume measuring means, and when the pumping volume falls below 70% of the pumping capacity of the lifting pump, the lifting pump is repaired or replaced. Note A well management system comprising a casing body having a strainer section installed in a borehole in the ground and a pumping pump installed within the casing body, the well management system further comprising a pumping volume measuring means for measuring the pumping volume of the pumping pump, a water level measuring means for measuring the water level within the casing body, and a groundwater introduction volume measuring means for measuring the amount of groundwater introduced into the casing body.

7. In the well management system described in claim 6, the lifting pump is configured to start operating when the pumping amount reaches a set amount or when an operation start condition is met after being temporarily stopped, and the well management system is characterized in that it is equipped with a pump operation time measurement means for measuring the operation time of the lifting pump.

8. In the well management system described in any one of claims 6 and 7, the lifting pump is configured to start operating when the pumping amount reaches a set amount or when an operation start condition is met after being temporarily stopped, and the well management system is characterized in that it is equipped with a pump operation count measuring means for measuring the number of times the lifting pump is operated.

9. A well management method according to any one of claims 6 and 7, characterized in that the lifting pump is a motor pump and has an inverter for varying the frequency of the power supply supplied to the lifting pump.

10. 9. A well management method according to claim 8, wherein the lifting pump is a motor pump and has an inverter for varying the frequency of the power supplied to the lifting pump.

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