CN116946903B - A monitoring equipment for long-term monitoring of water bodies in geological storage observation wells - Google Patents

Abstract

The invention relates to monitoring equipment for long-term monitoring of water in a geological storage observation well, which comprises at least four winches, a liquid level meter, a deep water pump and an overground positioning group, wherein the winches are all arranged on the overground, the liquid level meter winches control the lifting of the liquid level meter in the observation well through a rope, and the water pump winches control the lifting of the deep water pump through the rope; the water pipe winch is connected with a water outlet of the deep water pump through a water pipe and is used for outputting samples from the deep water pump, and the cable winch is connected with the deep water pump through a cable; the water pump winch, the water pipe winch and the cable winch respectively control the deep water pump, the water pipe and the cable to lift at the same speed; the above-ground positioning group comprises at least four fixed pulleys arranged at the wellhead of the observation well, the fixed pulleys are uniformly arranged along the circumferential direction of the wellhead, and the four fixed pulleys respectively correspond to four windlass, so that ropes of a liquid level meter, ropes of a deep water pump, cables and water pipes enter and exit the observation well from different positions of the wellhead, and mutual winding of the ropes, the cables and the water pipes is avoided.

Description

A monitoring equipment for long-term monitoring of water bodies in geological storage observation wells

Technical field

The invention belongs to the technical field of geological storage water quality monitoring, and specifically relates to a monitoring equipment used for long-term monitoring of water bodies in geological storage observation wells.

Background technique

Deep geological storage technology refers to the disposal technology of storing gas/liquid fluids through deep wells into underground rock pores and micro-fissures 1,500-3,500 meters below the earth's surface. The gas/liquid fluid is placed in the fourth type of environmental medium (deep geological environment) outside the biosphere to perform sealing, degradation, etc., so that the sealed fluid does not participate in the material cycle of humans and organisms. In order to analyze the migration and transformation process of sealed gas/liquid in deep formations and test the sealing effect, observation wells need to be reserved, and monitoring equipment and sample collection equipment must be placed in the observation wells. However, due to the deep depth of the observation well, putting multiple sets of monitoring equipment into the well at the same time can easily cause the downhole equipment lines and pipelines to become entangled, affecting the pipes' transmission of samples to the ground. Moreover, for equipment used for long-term monitoring, it is required to regularly upgrade the equipment. Return to the ground for maintenance, and then put it back into the observation well. If the lines in the well are entangled, the equipment cannot be easily raised and lowered, making the equipment a one-time or short-term monitoring equipment, and seriously affecting the normal operation of the equipment.

Contents of the invention

In response to the above problems, the present invention provides a monitoring equipment for long-term monitoring of water bodies in geological storage observation wells, including at least four winches, a liquid level gauge, a deep water pump, and an above-ground positioning group. The winches are all located on the ground, and the liquid level gauge winch The liquid level gauge is connected by a rope to control the lifting and lowering of the liquid level gauge in the observation well, and the water pump winch is connected by a rope and controls the lifting and lowering of the deep water pump in the observation well;

The water pipe winch is connected to the water outlet of the deep water pump through a water pipe and is used for the deep water pump to output samples. The cable winch is connected to the deep water pump through a cable and is used to energize the deep water pump. The water pump winch, water pipe winch and cable winch control the deep water pump, water pipe and cable respectively. Lift and lower at the same speed;

The above-ground positioning group includes at least four fixed pulleys located at the wellhead of the observation well. The fixed pulleys are evenly arranged along the circumference of the wellhead. The four fixed pulleys correspond to the four winches respectively, so that the ropes of the liquid level gauge, the ropes of the deep water pump, and the cables and water pipes enter and exit the observation well from different locations at the wellhead to avoid entanglement with each other.

Optionally, a rectangular platform is provided outside the wellhead of the observation well, the wellhead is located below the platform, one winch is installed at both ends of the platform, and two other winches are installed below the two ends of the platform;

The table surface of the platform is equipped with an auxiliary wellhead at the position corresponding to the wellhead below. The auxiliary wellhead is concentrically arranged with the wellhead. The two winches on the platform perform unwinding/rewinding through the auxiliary wellhead and the wellhead;

The connection between the two winches below the platform passes through the two first fixed pulleys and the center of the wellhead. The two winches below the platform use the two fixed pulleys on the connection line; the two second fixed pulleys at the wellhead. The connection between them is perpendicular to the connection between the two first fixed pulleys.

Optionally, the diameter of the auxiliary wellhead is larger than the diameter of the wellhead. Two third fixed pulleys are provided on the edge of the auxiliary wellhead corresponding to the positions of the two second fixed pulleys. The connection between the two third fixed pulleys is perpendicular to The connection between the two winches on the platform;

There is a fourth fixed pulley between the winch on the platform and the corresponding third fixed pulley. The rotating axes of the first fixed pulley, the second fixed pulley and the third fixed pulley are all parallel to the ground, and the rotating axis of the fourth fixed pulley is vertical. on the ground, that is, the fourth fixed pulley is placed horizontally; the rope, water pipe or cable released by the winch on the platform changes the transmission direction after passing through the fourth fixed pulley, and then enters the auxiliary wellhead through the corresponding third fixed pulley, and then downwards After entering the wellhead through the second fixed pulley, the two winches on the platform and the two winches below the platform form a cross shape when entering the wellhead, effectively preventing ropes, water pipes, and cables from being entangled with each other in the upper part of the observation well.

Optionally, a dividing wall is provided in the observation well. The dividing wall is close to the wall of the observation well corresponding to the first fixed pulley of the liquid level gauge winch. Both ends of the dividing wall are fixed on the well wall to separate the space in the well into two. In this part, the liquid level gauge and the deep water pump are placed respectively, and the side of the dividing wall facing the liquid level gauge is the inside;

The partition wall includes several inclined partition nets from top to bottom. There is a blank space between the two adjacent partition nets. The height of the blank space is equal to the height of the partition net. This can not only reduce the cost of the partition wall, but also reduce the cost of the partition wall. Can play a role in separation.

Further optionally, the tops of all the separation nets are on the same vertical plane, and the lower part of the separation nets is inclined toward the direction of the space where the deep water pump is located, with an inclination angle of 10-30°.

Optionally, a first correction part is provided at the bottom of the liquid level gauge, and a second correction part is provided at the top. The first correction part includes a plurality of first grab bars that expand outward, and the top ends of the first grab bars are connected to the liquid level. the bottom of the bitmeter;

The second correction part includes a plurality of second grab bars that first expand outward and then converge inward. The bottom end of the second grab bar is connected to the top of the liquid level gauge, and the top of the second grab bar is directly above the liquid level gauge; The first grab bar and the second grab bar are evenly arranged around the circumference of the liquid level gauge, and the first correction part and the second correction part have the liquid level gauge as the center of the circle.

Optionally, the top of the deep water pump is provided with a first limiting part. The first limiting part includes a telescopic rod and a first bracket. The bottom end of the telescopic rod is detachably connected to the top of the deep water pump, and the top end of the telescopic rod is connected to The center of the first bracket allows the telescopic rod to extend as the deep water pump descends, ensuring that within a certain height range, the first bracket does not need to move;

The first bracket includes four first dividing rods, which separate the cables, water pipes and ropes connected to the deep water pump.

Further optionally, the starting end of the first dividing rod is connected to the center of the first bracket, the end points to and is close to the well wall of the observation well, the end is provided with a first telescopic foot, and the first telescopic foot is provided with a first hydraulic pressure inside. device, the first hydraulic device controls the length of the first telescopic wall foot extending out of the first dividing rod. When the first telescopic wall foot resists the well wall, it absolutely separates the water pipes, cables and ropes of the deep water pump. When the first telescopic wall foot When retracting toward the inside of the well, the first bracket can move toward the deep water pump driven by the telescopic rod.

Optionally, the bottom of the deep water pump is provided with a second limiting part. The second limiting part includes a fixed vertical rod and a second bracket. The top of the fixed vertical rod is detachably connected to the bottom of the deep water pump. The bottom end is connected to the center of the second bracket;

The second support includes four second separation bars, which separate the cables, water pipes and ropes connected to the deep water pump.

Further optionally, the starting end of the second dividing rod is connected to the center of the second bracket, the end points to and is close to the well wall of the observation well, the end is provided with a second telescopic wall foot, and a second hydraulic pressure is provided inside the second telescopic wall foot. device, the second hydraulic device controls the length of the second telescopic wall foot extending out of the second dividing rod. When the second telescopic wall foot extends out of the second dividing rod and reaches the maximum length, only the distance between the second telescopic wall foot and the inner wall of the well is left. Very little gap, such as 1-5cm.

Description of drawings

Figure 1 is a schematic structural diagram of the wellhead of the monitoring equipment provided by the present invention;

Figure 2 is a schematic diagram of the liquid level gauge and deep water pump in the observation well;

Figure 3 is a schematic diagram of the first correction part and the second correction part of the hydraulic gauge;

Figure 4 is a schematic diagram (1) of the first limiting part and the second limiting part of the deep water pump;

Figure 5 is a schematic diagram (2) of the first limiting part and the second limiting part of the deep water pump.

In the drawing, 1-liquid level gauge, 2-deep water pump, 3-observation well, 4-liquid level gauge winch, 5-water pump winch, 6-water pipe winch, 7-cable winch, 8-water pipe, 9-cable, 10-Platform, 11-auxiliary wellhead, 12-wellhead, 13-first fixed pulley, 14-second fixed pulley, 15-third fixed pulley, 16-fourth fixed pulley, 17-separation net, 18-blank space , 19-The first correction part, 20-The second correction part, 21-The first grab rod, 22-The second grab rod, 23-Expansion section, 24-Convergence section, 25-Arc hook, 26-Telescopic rod, 27-the first dividing rod, 28-the first telescopic wall foot, 29-fixed vertical rod, 30-the second dividing rod, 31-the second telescopic wall foot.

Detailed ways

This embodiment provides a monitoring equipment for long-term monitoring of water bodies in geological storage observation wells. As shown in Figures 1 to 5, it includes at least four winches, a liquid level gauge 1, a deep water pump 2, and an above-ground positioning group. The winches are all Set on the ground, the liquid level gauge winch 4 is connected by a rope and controls the lifting and lowering of the liquid level gauge 1 in the observation well 3, and the water pump winch 5 is connected by a rope and controls the lifting and lowering of the deep water pump 2 in the observation well 3;

The water pipe winch 6 is connected to the water outlet of the deep water pump 2 through the water pipe 8, and is used for the deep water pump 2 to output samples. The cable winch 7 is connected to the deep water pump 2 through the cable 9, and is used to energize the deep water pump 2; the water pump winch 5, the water pipe winch 6, and the cable The winch 7 controls the deep water pump 2, the water pipe 8 and the cable 9 to rise and fall at the same speed respectively;

The above-ground positioning group includes at least four fixed pulleys located at the wellhead 12 of the observation well. The fixed pulleys are evenly arranged along the circumference of the wellhead 12. The four fixed pulleys correspond to the four winches respectively, so that the ropes of the liquid level gauge 1 and the deep water pump 2 The ropes, cables 9 and water pipes 8 enter and exit the observation well 3 from different positions of the wellhead 12 to avoid entanglement with each other.

Optionally, the four winches are on the same horizontal plane and are evenly arranged along the circumferential direction of the wellhead 12, that is, the four winches are located in the east, south, west, and north directions of the wellhead 12, and the four winches are respectively Corresponding to the four fixed pulleys, pass the rope, cable 9, and water pipe 8 through the corresponding fixed pulleys, and then put them into the observation well 3. For example, after the liquid level gauge winch 4 unwinds the corresponding rope, the rope passes through the corresponding fixed pulley and then enters the observation well 3 .

If the space at the wellhead of the observation well is relatively large, the four winches can be arranged in the above-mentioned cross shape. If the space at the wellhead 12 is limited, the following straight shape can be used. Specifically, a rectangular platform is set outside the wellhead 12 of the observation well. 10. The wellhead 12 is located below the platform 10. A winch is installed at both ends of the platform 10, and two other winches are installed below both ends of the platform 10;

The platform 10 is provided with an auxiliary wellhead 11 at a position corresponding to the wellhead 12 below. The auxiliary wellhead 11 and the wellhead 12 are concentrically arranged. The two winches on the platform 10 perform unwinding/rewinding through the auxiliary wellhead 11 and the wellhead 12;

The connection between the two winches below the platform 10 passes through the center of the circle of the two first fixed pulleys 13 and the wellhead 12. The two winches below the platform 10 correspondingly use the two fixed pulleys on the connection; the two fixed pulleys on the wellhead 12 The connection line between the second fixed pulleys 14 is perpendicular to the connection line between the two first fixed pulleys 13 .

Optionally, the diameter of the auxiliary wellhead 11 is larger than the diameter of the wellhead 12. Two third fixed pulleys 15 are provided on the edge of the auxiliary wellhead 11 corresponding to the positions of the two second fixed pulleys 14. Between the two third fixed pulleys 15 The connection between them is perpendicular to the connection between the two winches on the platform 10;

A fourth fixed pulley 16 is provided between the winch on the platform 10 and the corresponding third fixed pulley 15. The rotating axes of the first fixed pulley 13, the second fixed pulley 14 and the third fixed pulley 15 are all parallel to the ground. The rotation axis of the four fixed pulleys 16 is perpendicular to the ground, that is, the fourth fixed pulley 16 is placed horizontally; the rope or water pipe 8 or cable 9 released by the winch on the platform 10 changes the transmission direction after passing through the fourth fixed pulley 16, and then passes through the corresponding The third fixed pulley 15 enters the auxiliary wellhead 11, and then passes downward through the second fixed pulley 14 and enters the wellhead 12, so that the two winches on the platform 10 and the two winches below the platform 10 enter the wellhead 12 to form a cross shape, effectively Avoid entanglement of ropes, water pipes 8, and cables 9 in the upper part of the observation well 3.

Optionally, the observation well 3 is also provided with a frequency converter, an electric box and a water level control box on the ground. The frequency converter and the electric box are connected to the deep water pump 2 through the cable 9 to control the operation of the deep water pump 2 and seal the bottom of the observation well 3. The liquid is pumped out along the water pipe 8 and returned to the ground for detection;

The water level control box communicates with the liquid level gauge 1 to receive and analyze the detection information of the liquid level gauge 1. When the liquid level in the observation well 3 is higher than the preset level, it means that both the liquid level gauge 1 and the deep water pump 2 are immersed in the sealed liquid. , the salinity of the sealed liquid is high and it is corrosive to a certain extent. At this time, all four winches need to be rolled up to lift the liquid level gauge 1 and the deep water pump 2; in addition, when the liquid level gauge 1 and the deep water pump 2 need to be inspected and maintained At this time, it is also necessary to lift the liquid level gauge 1 and the deep water pump 2 to the ground.

Optionally, a dividing wall is provided in the observation well 3. The dividing wall is close to the wall of the observation well 3 corresponding to the first fixed pulley 13 of the liquid level gauge hoist 4. Both ends of the dividing wall are fixed on the well wall for The space in the well is divided into two parts, where the liquid level gauge 1 and the deep water pump 2 are placed respectively. The side of the dividing wall facing the liquid level gauge 1 is on the inside to prevent the rope of the liquid level gauge 1 from being entangled with other ropes, water pipes 8, and cables 9;

The partition wall includes several inclined partition nets 17 from top to bottom. There is a blank space 18 between the two adjacent partition nets 17. The height of the blank space 18 is equal to the height of the partition net 17, which can reduce the separation. The cost of the wall can also play a role in separation.

Further optionally, the tops of all the separation nets 17 are on the same vertical plane, and the lower parts of the separation nets 17 are inclined toward the direction of the space where the deep water pump 2 is located, with an inclination angle of 10-30°. The inclination angles of all partition nets 17 are the same.

Optionally, the liquid level gauge 1 is provided with a first correction part 19 at the bottom and a second correction part 20 at the top. The first correction part 19 includes a plurality of first grab bars 21 that expand outward. The top of rod 21 is connected to the bottom of liquid level gauge 1;

The second correction part 20 includes a plurality of second grab bars 22 that first expand outward and then converge inward. The bottom end of the second grab bar 22 is connected to the top of the liquid level meter 1 , and the top end of the second grab bar 22 is at the liquid level. Right above the gauge 1; the first grab bar 21 and the second grab bar 22 are evenly arranged around the circumference of the liquid level gauge 1, and the first correction part 19 and the second correction part 20 both take the liquid level gauge 1 as the center of the circle.

For example, the first grab rod 21 includes an upper inclined section and a lower vertical section. The inclined section is inclined toward the outside of the liquid level gauge 1 . The vertical section enables the lower part of the first correction part 19 to have a fixed inner diameter. The second grab rod 22 includes a lower expansion section 23 and an upper convergence section 24. The expansion section 23 and the convergence section 24 are both straight lines. The expansion section 23 is inclined toward the outside of the liquid level gauge 1, and the convergence section 24 is toward the inside of the liquid level gauge 1. The direction is tilted, and the connection between the expansion section 23 and the convergence section 24 forms a convex arc-shaped inflection point. The top of the convergence section 24 has an arc hook 25 that is bent toward the center of the liquid level meter 1, and the arc hook 25 The opening points downward.

Since the separation nets 17 are arranged at intervals, the liquid level gauge 1 may slide from the empty space 18 into the space where the deep water pump 2 is located during the descent process, causing the pipelines to become entangled. In order to prevent the liquid level meter 1 from sliding out of the blank space 18 during the rising and falling processes, the present invention designs a first correction part 19 and a second correction part 20. Specifically, during the descending process of the liquid level gauge 1, if the liquid level gauge 1 slides out from between the two separation nets 17 due to outward swing, the liquid level gauge 1 will continue to descend along the outward-inclined path. The separation net 17 slides down, and the liquid level gauge 1 cannot completely separate from the separation net 17, because there is always a section of its own rope above the separation wall, making it impossible for the swing range of the liquid level gauge 1 to continue at a large angle; the first correction part The first grab rod 21 of 19 expands outward and will be inserted into the mesh of the separation net 17 when it descends, thereby blocking the first correction part 19 on the separation net 17, and the liquid level gauge 1 cannot continue to fall, and the liquid level gauge hoist 4 will detect that the weight of the liquid level gauge 1 has been lost instantaneously. At this time, the liquid level gauge hoist 4 is controlled to reverse (i.e., wind up), lift the liquid level gauge 1, and pull out the first grab rod 21. Since the second grab rod 22 is convergent, and the mesh will not be inserted. The liquid level gauge 1 rises along the inclined separation network 17. The separation network 17 also has a certain lifting effect on the liquid level gauge 1. The liquid level gauge winch 4 cannot detect the complete liquid level gauge. 1 weight, then continue to wind up. When the liquid level gauge 1 rises to the blank space 18, there is no restriction by the separation network 17. The liquid level gauge 1 returns to the inside of the dividing wall, and the liquid level gauge hoist 4 detects the complete liquid level gauge. 1 weight, then start unwinding and lower the level gauge 1.

When the liquid level gauge 1 is rising, the first correction part 19 does not work, and the mesh will not be inserted to prevent the liquid level gauge 1 from rising. If the liquid level gauge 1 collides with the inclined separation net 17 due to outward swing, the first correction part 19 will not function. The inflection point of the second grab rod 22 first contacts the separation network 17. Since the separation network 17 and the convergence section 24 are both inclined, the inclination angle of the convergence section 24 is greater than the inclination angle of the separation network 17, that is, the convergence section 24 is closer to the liquid level gauge 1 The inclination angle is the angle between the convergence section 24 or the separation network 17 and the vertical surface. The inflection point transitions smoothly on the inner side of the separation network 17, causing the liquid level gauge 1 to swing inward and return to the right track. When the liquid level gauge 1 swings outwards and just swings out of the dividing wall from the empty space 18, the rope continues to pull the liquid level gauge 1 up. When the top of the arc hook 25 of the convergence section 24 contacts the bottom of the upper separation net 17 At this time, under the tension of the rope, the second grab bar 22 slides through the separation net 17, giving the second correction part 20 a force toward the inside of the separation net 17, and promoting the liquid level gauge 1 to return to the inside of the separation net 17. The first correction part 19 and the second correction part 20 enable the liquid level gauge 1 to return to the inside of the separation net 17 during the descending and rising processes to avoid contact and entanglement with the deep water pump 2 and its ropes, water pipes 8 and cables 9 .

Optionally, the top of the deep water pump 2 is provided with a first limiting part. The first limiting part includes a telescopic rod 26 and a first bracket. The bottom end of the telescopic rod 26 is detachably connected to the top of the deep water pump 2. The telescopic rod 26 is removably connected to the top of the deep water pump 2. The top of the rod 26 is connected to the center of the first bracket, so that the telescopic rod 26 extends as the deep water pump 2 descends, ensuring that within a certain height range, the first bracket does not need to move;

The first support includes four first separation bars 27 that separate the cables 9 , water pipes 8 and ropes connected to the deep water pump 2 , for example, along the clockwise direction of the cross-section of the observation well 3 , on the outside of the dividing wall, the first dividing rod 27, the cable 9, the first dividing rod 27, the water pipe 8, the first dividing rod 27, the rope of the deep water pump 2, and the first dividing rod 27 are arranged in order, so as to connect the deep water pump The cables 9, water pipes 8 and ropes of 2 are separated and protected to ensure that they are not entangled with each other.

Further optionally, the starting end of the first dividing rod 27 is connected to the center of the first bracket, the end is pointed to and close to the well wall of the observation well 3, and a first telescopic foot 28 is provided at the end, and the first telescopic foot 28 is provided inside. There is a first hydraulic device. The first hydraulic device controls the length of the first telescopic leg 28 extending out of the first dividing rod 27. When the first telescopic leg 28 resists the well wall, the water pipe 8 and cable of the deep water pump 2 are absolutely separated. 9 and the rope. When the first telescopic wall foot 28 retracts toward the inside of the well, the first bracket can be moved toward the deep water pump 2 driven by the telescopic rod 26.

Optionally, the bottom of the deep water pump 2 is provided with a second limiting part. The second limiting part includes a fixed vertical rod 29 and a second bracket. The top of the fixed vertical rod 29 is detachably connected to the bottom of the deep water pump 2. The bottom end of the fixed vertical rod 29 is connected to the center of the second bracket;

The second support includes four second separation bars 30 that separate the cables 9 , water pipes 8 and ropes connected to the deep water pump 2 , for example, along the clockwise direction of the cross-section of the observation well 3 , on the outside of the dividing wall, the second dividing rod 30, the cable 9, the second dividing rod 30, the water pipe 8, the second dividing rod 30, the rope of the deep water pump 2, and the second dividing rod 30 are arranged in order, so as to connect the deep water pump The cables 9, water pipes 8 and ropes of 2 are separated and protected to ensure that they are not entangled with each other.

Further optionally, the starting end of the second dividing rod 30 is connected to the center of the second bracket, the end is pointed toward and close to the wall of the observation well 3, and a second telescopic foot 31 is provided at the end, and the second telescopic foot 31 is provided inside. There is a second hydraulic device. The second hydraulic device controls the length of the second telescopic wall foot 31 extending out of the second dividing rod 30. When the second telescopic wall foot 31 extends out of the second dividing rod 30 and reaches the maximum length, the second telescopic wall foot 31 extends out of the second dividing rod 30 and reaches the maximum length. There is only a small gap between the wall foot 31 and the inner wall of the well, such as 1-5cm.

Both the first hydraulic device and the second hydraulic device are conventional hydraulic devices, which have their own power supply and motor, and can be connected to the control device on the ground to determine the depth of the deep water pump according to the speed and time of the corresponding winch retraction/unwinding. , thereby controlling the operation of the first limiting part and the second limiting part.

In the present invention, the cable 9, water pipe 8 and rope connected to the deep water pump 2 are separated by the first bracket of the first limiting part. Specifically, the water pump winch 5, water pipe winch 6 and cable winch 7 set appropriate rewinding/unwinding speeds according to the diameter (i.e. thickness) of the medium they are winding, so that the cable 9, water pipe 8 and rope can be retracted/unrolled at the same progress. Place the deep water pump 2 to ensure the smooth lifting and lowering of the deep water pump 2. The fixed pulley design at the wellhead 12 ensures that the cable 9, water pipe 8 and rope of the deep water pump 2 in the upper part of the observation well 3 have little chance of getting entangled. However, the observation well 3 is relatively deep (generally several kilometers), and the deep water pump 2 mainly relies on the first limiting part and the second limiting part in the middle and lower parts of the observation well 3 to prevent the cable 9, the water pipe 8 and the rope from being entangled.

When the deep water pump 2 descends and reaches a certain depth, the first telescopic feet 28 of the four first dividing rods 27 of the first bracket extend and resist the inner wall of the well, separating the cables 9, water pipes 8 and ropes, and the telescopic rods 26 is extended, the deep water pump 2 continues to descend, the telescopic rod 26 does not need to exert force on the deep water pump 2, and only needs to move in accordance with the position of the deep water pump 2; when the length of the telescopic rod 26 approaches the limit length, the four legs of the second bracket The second telescopic wall leg 31 of the second dividing rod 30 is extended to its longest length. The second telescopic wall leg 31 is close to the inner wall of the well. The cable 9 and water pipe 8 have larger diameters and will not pass between the second telescopic wall leg 31 and the well inner wall. The more the gap between them is, the less likely the rope is to come out of the gap, so that the second limiter restricts the entanglement of the cable 9, the water pipe 8 and the rope within a short time of adjusting the length of the first limiter; the second limiter When the position is lowered with the deep water pump 2, the first telescopic wall foot 28 retracts, the telescopic rod 26 shortens and drives the first bracket to move downward. When the telescopic rod 26 shrinks to the shortest time, the first telescopic wall foot 28 stretches and moves again. Against the well wall, the telescopic rod 26 stretches again as the deep water pump 2 descends, the second telescopic wall foot 31 retracts (to avoid bumps on the inner wall of the well and bumping the second bracket), and the second limiting part always follows the deep water pump. 2 dropped. Repeat the above action until the water inlet of the deep water pump 2 is submerged under the liquid level sealed in the observation well 3, and the water inlet of the deep water pump 2 is lower than the second limiter to prevent the second limiter from being flooded.

When the deep water pump 2 rises, the telescopic rod 26 is extended to its longest position in advance, and then the four first telescopic wall feet 28 resist the well wall. The second limiting portion rises with the deep water pump 2, and the telescopic rod 26 rises with the deep water pump 2. shorten, the telescopic rod 26 does not exert force on the deep water pump 2; when the telescopic rod 26 is shortened to the shortest length, the first telescopic leg 28 retracts, and at the same time the second telescopic leg 31 extends; the telescopic rod 26 extends to the longest position again, and the first telescopic leg 28 retracts. One telescopic wall foot 28 stretches out and resists the shaft wall, and the second telescopic wall foot 31 retracts. Repeat the above actions until the deep water pump 2 is lifted to the ground or close to the ground.

The water pump winch 5, water pipe winch 6 and cable winch 7 of the present invention control the corresponding medium to retract/release the deep water pump 2 at the same speed, and the deep water pump 2 can move continuously during the rising or falling process. The liquid level meter winch 4 independently controls the lifting and lowering of the liquid level meter 1. Initially, the liquid level height of the sealed liquid in the observation well 3 is known, that is, the depth at which the deep water pump 2 and the liquid level gauge 1 are lowered for the first time is known, and the water inlet at the bottom of the deep water pump 2 is submerged below the liquid level of the observation well 3. Sampling is possible. The liquid level gauge 1 floats on the liquid surface and monitors the liquid level in real time. When the liquid level rises to the preset level, it means that the deep water pump 2 and the liquid level gauge 1 are immersed in the sealed liquid. In order to avoid corrosion of the equipment, four The winch is retracted, the liquid level gauge 1 and the deep water pump 2 are raised to a safe height, and monitoring is continued.

The observation well of the present invention is a conventional observation well. After drilling, steel pipes are installed in sections to form an observation well. The separation network is installed in the steel pipe when the steel pipe is on the ground. The separation net is made of stronger steel, and reinforced ribs are installed to improve the overall strength of the separation net. After the observation well is installed and the well is cleaned, the separation net can withstand the impact of well cleaning.

Claims (6)

1. A monitoring equipment for long-term monitoring of water bodies in geological storage observation wells, characterized in that it includes at least four winches, a liquid level gauge, a deep water pump, and an above-ground positioning group. The winches are all located on the ground, and the liquid level gauge winch passes through The rope connects and controls the lifting and lowering of the liquid level gauge in the observation well, and the water pump winch is connected by the rope and controls the lifting and lowering of the deep water pump in the observation well; The water pipe winch is connected to the water outlet of the deep water pump through a water pipe and is used for the deep water pump to output samples. The cable winch is connected to the deep water pump through a cable and is used to energize the deep water pump. The water pump winch, water pipe winch and cable winch control the deep water pump, water pipe and cable respectively. Lift and lower at the same speed; The above-ground positioning group includes at least four fixed pulleys located at the wellhead of the observation well. The fixed pulleys are evenly arranged along the circumference of the wellhead. The four fixed pulleys correspond to the four winches respectively, so that the ropes of the liquid level gauge, the ropes of the deep water pump, and the cables and water pipes enter and exit the observation well from different locations at the wellhead to avoid entanglement; A rectangular platform is set outside the wellhead of the observation well, and the wellhead is below the platform. A winch is installed at both ends of the platform, and two other winches are installed below each end of the platform; The table surface of the platform is equipped with an auxiliary wellhead at the position corresponding to the wellhead below. The auxiliary wellhead is concentrically arranged with the wellhead. The two winches on the platform perform unwinding/rewinding through the auxiliary wellhead and the wellhead; The connection between the two winches below the platform passes through the two first fixed pulleys and the center of the wellhead; the connection between the two second fixed pulleys at the wellhead is perpendicular to the connection between the two first fixed pulleys; The diameter of the auxiliary wellhead is larger than the diameter of the wellhead. Two third fixed pulleys are provided on the edge of the auxiliary wellhead corresponding to the positions of the two second fixed pulleys. The connection line between the two third fixed pulleys is perpendicular to the two fixed pulleys on the platform. The connection between two winches; There is a fourth fixed pulley between the winch on the platform and the corresponding third fixed pulley. The rotating axes of the first fixed pulley, the second fixed pulley and the third fixed pulley are all parallel to the ground, and the rotating axis of the fourth fixed pulley is vertical. On the ground, the fourth fixed pulley is placed horizontally; The rope, water pipe or cable released by the winch on the platform changes the transmission direction after passing through the fourth fixed pulley, and then enters the auxiliary wellhead through the corresponding third fixed pulley, and then passes downwards through the second fixed pulley and enters the wellhead, so that the two fixed pulleys on the platform The position where the first winch and the two winches below the platform enter the wellhead form a cross shape, effectively preventing ropes, water pipes, and cables from being entangled with each other in the upper part of the observation well; The top of the deep water pump is provided with a first limiting part. The first limiting part includes a telescopic rod and a first bracket. The bottom end of the telescopic rod is detachably connected to the top of the deep water pump. The top end of the telescopic rod is connected to the first bracket. center, so that the telescopic rod stretches as the deep water pump descends, ensuring that within a certain height range, the first bracket does not need to move; The first support includes four first dividing rods that separate cables, water pipes and ropes connected to the deep water pump; The bottom of the deep water pump is provided with a second limiting part. The second limiting part includes a fixed vertical rod and a second bracket. The top end of the fixed vertical rod is detachably connected to the bottom of the deep water pump. The bottom end of the fixed vertical rod is connected to the second bracket. The center of the second bracket; The second support includes four second separation bars, which separate the cables, water pipes and ropes connected to the deep water pump. 2. The monitoring equipment for long-term monitoring of water bodies in geological storage observation wells according to claim 1, characterized in that a dividing wall is provided in the observation well, and the dividing wall is close to the wall of the observation well corresponding to the fixed pulley of the liquid level meter winch. , both ends of the dividing wall are fixed on the well wall, used to divide the space in the well into two parts, where the liquid level gauge and the deep water pump are placed respectively. The side of the dividing wall facing the liquid level gauge is the inside; The partition wall includes several inclined partition nets from top to bottom. There is a blank space between the two adjacent partition nets. The height of the blank space is equal to the height of the partition net. This can not only reduce the cost of the partition wall, but also reduce the cost of the partition wall. Can play a role in separation. 3. The monitoring equipment for long-term monitoring of water bodies in geological storage observation wells according to claim 2, characterized in that the tops of all separation nets are on the same vertical plane, and the lower parts of the separation nets are directed toward the space where the deep water pump is located. tilt. 4. The monitoring equipment for long-term monitoring of water bodies in geological storage observation wells according to claim 3, characterized in that the bottom of the liquid level meter is provided with a first correction part, and the top is provided with a second correction part, and the first correction part is provided at the top. The correction part includes a plurality of first grab bars that expand outward, and the top of the first grab bars is connected to the bottom of the liquid level gauge; The second correction part includes a plurality of second grab bars that first expand outward and then converge inward. The bottom end of the second grab bar is connected to the top of the liquid level gauge, and the top of the second grab bar is directly above the liquid level gauge; The first grab bar and the second grab bar are evenly arranged around the circumference of the liquid level gauge, and the first correction part and the second correction part have the liquid level gauge as the center of the circle. 5. The monitoring equipment for long-term monitoring of water bodies in geological storage observation wells according to claim 4, characterized in that the starting end of the first dividing rod is connected to the center of the first bracket, and the end point is directed to and close to the well wall of the observation well. , a first telescopic wall foot is provided at the end, a first hydraulic device is provided inside the first telescopic wall foot, and the first hydraulic device controls the length of the first telescopic wall foot extending out of the first dividing rod; When the first telescopic wall foot resists the well wall, it completely separates the water pipes, cables and ropes of the deep water pump. When the first telescopic wall foot retracts toward the inside of the well, the first bracket is driven by the telescopic rod and moves toward the deep water pump. 6. The monitoring equipment for long-term monitoring of water bodies in geological storage observation wells according to claim 5, characterized in that the starting end of the second dividing rod is connected to the center of the second bracket, and the end point is directed to and close to the well wall of the observation well. , a second telescopic wall foot is provided at the end, and a second hydraulic device is provided inside the second telescopic wall foot. The second hydraulic device controls the length of the second telescopic wall foot extending out of the second dividing rod.