An oil-water well acidification downhole real-time monitoring device

Abstract

The utility model discloses an oil and water well acidification downhole real -time monitoring devices, including the car body, the car body top is provided with two groups of vertical board, and is rotatably arranged with the pivot between two groups vertical board, and one group vertical board is provided with the first motor, and the first motor output is connected with the pivot, and the pivot is wound with the rope, and the car body middle part is provided with the perforation, and one end of rope is provided with the lowering block through the perforation, and the lowering block is provided with temperature sensor, pressure sensor and PH probe, and four groups hydraulic cylinder output all are provided with the moving link, and four groups moving link bottom all are provided with the support leg, and four groups support leg bottom all are provided with the support adjusting link, and four groups support adjusting link bottom all are provided with the gyro wheel, can according to the oil and water well opening size adjustment four groups support leg interval, ensure that the car body is stable and makes the lowering block to be located in the oil and water well center, reduces the deviation problem caused by the irregularity of wellbore.

Description

Technical Field

[0001] This utility model relates to the field of oil and water well acidization monitoring technology, and more specifically, it relates to a downhole real-time monitoring device for oil and water well acidization. Background Technology

[0002] Acidized wells are wells that have undergone acidizing operations to enhance production or water injection in oil or water wells. Acidizing is a commonly used reservoir stimulation technique that involves injecting acid into the formation to dissolve blockages or improve formation permeability, thereby increasing the oil production of oil wells or the water injection rate of water wells.

[0003] During the acidizing process of oil and water wells, real-time downhole monitoring devices are crucial for ensuring operational safety and optimizing acidizing results. These monitoring devices provide real-time data on downhole conditions, helping operators make timely adjustments to achieve optimal treatment results and avoid potential risks. Downhole monitoring requires real-time monitoring via pressure sensors, temperature sensors, electromagnetic flow meters, and pH probes.

[0004] Pressure sensors, temperature sensors, and pH probes are all installed on the lowering block, which is then unwound via cables on a cable car to lower it into the oil and water wells for monitoring.

[0005] However, in order to obtain accurate data, the monitoring device needs to be placed precisely in the predetermined position. However, due to the irregular shape of the well shaft or the presence of obstacles, the monitoring device may tilt during the lowering process due to fluid flow or well wall friction, thus affecting its monitoring accuracy. Utility Model Content

[0006] (a) Technical problems to be solved To address the problems existing in the prior art, this utility model provides a real-time downhole monitoring device for oil and water well acidizing, which solves the technical problem mentioned in the background art that the monitoring equipment may tilt during the lowering process due to fluid flow or well wall friction caused by irregular wellbore shape or the presence of obstacles, thereby affecting its monitoring accuracy.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A real-time downhole monitoring device for acidizing oil and water wells includes a vehicle body. Two sets of vertical plates are mounted on the top of the vehicle body, and a rotating shaft rotatably connects the two sets of vertical plates. A first motor is mounted on one set of vertical plates, and the output end of the first motor is connected to the rotating shaft. A rope is wound around the rotating shaft. A through-hole is provided in the middle of the vehicle body, and one end of the rope passes through the through-hole to a lowering block. A temperature sensor, a pressure sensor, and a pH probe are mounted on the lowering block. A display is mounted on the top of the vehicle body, and the temperature sensor, pressure sensor, and pH probe are all electrically connected to the display. Fixing blocks are provided on the front and rear sides of the bottom of the vehicle body. Hydraulic cylinders are mounted on the left and right ends of the two sets of fixing blocks. Moving rods are mounted on the output ends of the four sets of hydraulic cylinders. Support legs are mounted on the bottom ends of the four sets of moving rods. Adjusting rods are slidably mounted on the bottom ends of the four sets of support legs. Rollers are mounted on the bottom ends of the four sets of adjusting rods.

[0008] This utility model is further configured such that each of the four sets of outriggers has a chamber, each of the four sets of chambers has a rotatable screw, and each of the four sets of moving rods has a second motor at its top. The output ends of the four sets of second motors pass through the four sets of moving rods and are connected to the four sets of screws. The four sets of support adjustment rods slide within the chambers of the four sets of outriggers. Each of the four sets of support adjustment rods has a threaded groove at its top and is threadedly connected to the four sets of screws. Since there may be unevenness around the oil and water wells, starting the second motor drives the screw to rotate, and the screw is threadedly connected to the support adjustment rod, allowing the support adjustment rod to slide within the outrigger, thereby adjusting the length of the support adjustment rod. This facilitates adjustment of the length of the four sets of support adjustment rods according to different terrains, thus enhancing the stability of the vehicle body.

[0009] The present invention is further configured such that a depth encoder is provided at the outer end of another set of the vertical plates. The input end of the depth encoder is connected to the rotating shaft. As the cable is released and retracted, the rotating shaft rotates. The depth encoder records the number of rotations of the rotating shaft and converts it into the actual release length of the rotating shaft, thereby accurately controlling the release depth of the lowering block and providing very accurate depth information.

[0010] The present invention is further configured such that a counterweight is provided at the top of the lowering block, and a through hole is provided in the middle of the counterweight. The rope is located in the through hole of the counterweight. The counterweight helps to keep the lowering block descending vertically as a whole, and avoids the lowering block tilting due to fluid flow or well wall friction.

[0011] The present invention is further configured such that each of the four sets of rollers is provided with a rubber ring, which can increase the friction of the rollers, thereby improving the stability of the vehicle body when it moves to the designated position.

[0012] The present invention is further configured such that each of the four sets of movable rods is provided with a through hole, and an anchor is movably installed in the four sets of through holes. When the vehicle body moves to the designated position, the stability of the vehicle body can be further improved by anchoring the four sets of anchors to the ground through the through holes of the four sets of movable rods.

[0013] The present invention is further configured such that storage boxes are provided on the left and right sides of the bottom of the vehicle body, and two sets of placement chambers are connected to each other on the two sets of storage boxes. The four sets of anchors are placed in the four sets of placement chambers respectively. When the four sets of anchors are not in use, the four sets of anchors are placed in the four sets of placement chambers in the two sets of storage boxes for easy storage of the anchors.

[0014] The present invention is further configured such that hooks are provided on the left and right sides of the top of the counterweight block, and two sets of hanging rings are provided at the bottom of the vehicle body. The two sets of hooks correspond to the two sets of hanging rings. When it is not necessary to monitor the oil and water wells, the rope is wound on the shaft, and the two sets of hooks and the two sets of hanging rings on the counterweight block are used to fix the entire lowering block, which facilitates the overall mounting and fixing of the lowering block.

[0015] The present invention is further configured such that each of the four sets of movable rods has a T-shaped block at its top, and T-shaped grooves are provided on the left front side, left rear side, right front side and right rear side of the bottom of the vehicle body. The four sets of T-shaped blocks slide within the four sets of T-shaped grooves. When the four sets of movable rods move, the four sets of T-shaped blocks slide within the four sets of T-shaped grooves of the vehicle body, which can support the movable rods and improve their stability.

[0016] Beneficial effects Compared with the prior art, this utility model provides a downhole real-time monitoring device for acidizing oil and water wells, which has the following beneficial effects: 1. The output end of the first motor is connected to the rotating shaft, on which a rope is wound. A temperature sensor, a pressure sensor, and a pH probe are installed on the lowering block. Hydraulic cylinders are installed at the left and right ends of both sets of fixed blocks. Moving rods are installed at the output ends of all four sets of hydraulic cylinders. Support legs are installed at the bottom ends of all four sets of moving rods. Adjusting rods are slidably installed at the bottom ends of all four sets of support legs. Rollers are installed at the bottom ends of all four sets of adjusting rods. When real-time monitoring of pressure, temperature, and pH values ​​within the oil / water well is required, the spacing of the four sets of support legs is adjusted according to the well's diameter. Opening the four sets of hydraulic cylinders drives the four sets of moving rods, which in turn move the four sets of moving rods via four... The outriggers and four adjustable rods drive four sets of rollers to roll on the ground. After the distance between the four outriggers is adjusted to a suitable level, the rollers roll to move the entire vehicle body directly above the oil and water well, positioning the lowering block in the center of the well. Then, the first motor is activated, which drives the rotating shaft to rotate. The shaft unwinds the rope, which in turn moves the lowering block downwards to the designated depth. Temperature sensors, pressure sensors, and pH probes monitor the pressure, temperature, and pH value in the oil and water well in real time. The distance between the four outriggers can be adjusted according to the size of the well opening to ensure vehicle stability and position the lowering block in the center of the well, reducing the risk of displacement caused by irregular wellbore.

[0017] 2. The output ends of the four sets of second motors pass through the four sets of moving rods and are connected to the four sets of screws respectively. The top of each of the four sets of support adjustment rods is provided with a threaded groove. The four sets of support adjustment rods are threadedly connected to the four sets of screws. There may be unevenness around the oil and water wells. By starting the second motor, the second motor drives the screw to rotate. The screw is threadedly connected to the support adjustment rod, and the support adjustment rod slides in the support leg, thereby adjusting the length of the support adjustment rod. This makes it easy to adjust the length of the four sets of support adjustment rods according to different terrains, thereby enhancing the stability of the vehicle body.

[0018] 3. Another set of vertical plates is equipped with a depth encoder at its outer end. The input end of the depth encoder is connected to the rotating shaft. As the cable is released and retracted, the rotating shaft rotates. The depth encoder records the number of rotations of the rotating shaft and converts it into the actual release length of the rotating shaft, thereby accurately controlling the release depth of the lowering block and providing very accurate depth information. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a real-time downhole monitoring device for acidizing oil and water wells according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a real-time downhole monitoring device for acidizing oil and water wells according to this utility model. Figure 2 ; Figure 3This is a schematic diagram of the structure of the outriggers after adjusting the spacing. Figure 4 This is a schematic diagram of the connection structure between the neutral plate, the rotating shaft, and the first motor in this utility model; Figure 5 This is a schematic diagram of the connection structure between the support leg, adjusting rod, and screw in this utility model; Figure 6 This is a schematic diagram of the connection structure between the lower block, temperature sensor, and pressure sensor in this utility model.

[0020] In the diagram: 1. Vehicle body; 2. Vertical plate; 3. Rotating shaft; 4. First motor; 5. Rope; 6. Lowering block; 7. Temperature sensor; 8. Pressure sensor; 9. pH probe; 10. Display; 11. Fixing block; 12. Hydraulic cylinder; 13. Moving rod; 14. Outrigger; 15. Adjusting rod; 16. Roller; 17. Second motor; 18. Screw; 19. Depth encoder; 20. Counterweight; 21. Anchor nail; 22. Storage box; 23. Hook; 24. Hanging ring; 25. T-block. Detailed Implementation It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] Please see Figure 1-6A real-time downhole monitoring device for acidizing oil and water wells includes a vehicle body 1. Two sets of vertical plates 2 are mounted on the top of the vehicle body 1, and a rotating shaft 3 is rotatably connected between the two sets of vertical plates 2. A first motor 4 is mounted on one set of vertical plates 2, and the output end of the first motor 4 is connected to the rotating shaft 3. A rope 5 is wound around the rotating shaft 3. A through hole is provided in the middle of the vehicle body 1, and one end of the rope 5 passes through the through hole to a lowering block 6. A temperature sensor 7, a pressure sensor 8, and a pH probe 9 are mounted on the lowering block 6. A display 10 is mounted on the top of the vehicle body 1, and the temperature sensor 7, pressure sensor 8, and pH probe 9 are all electrically connected to the display 10. Next, a fixing block 11 is provided on the front and rear sides of the bottom of the vehicle body 1. A hydraulic cylinder 12 is provided on the left and right ends of the two sets of fixing blocks 11. A moving rod 13 is provided on the output end of the four sets of hydraulic cylinders 12. A support leg 14 is provided at the bottom of the four sets of moving rods 13. A support adjustment rod 15 is slidably provided at the bottom of the four sets of support adjustment rods 14. A roller 16 is provided at the bottom of the four sets of support adjustment rods 15. A T-shaped block 25 is provided at the top of the four sets of moving rods 13. A T-shaped groove is provided on the left front, left rear, right front and right rear sides of the bottom of the vehicle body 1. The four sets of T-shaped blocks 25 slide in the four sets of T-shaped grooves. In this embodiment, when real-time monitoring of pressure, temperature, and pH value within the oil and water well is required, the spacing of the four sets of outriggers 14 is adjusted according to the well's diameter. The four sets of hydraulic cylinders 12 are activated, driving the four sets of moving rods 13. The four sets of T-blocks 25 slide within the four T-slots of the vehicle body 1. The four sets of moving rods 13, through the four sets of outriggers 14 and the four sets of adjusting rods 15, drive the four sets of rollers 16 to roll on the ground. Once the spacing of the four sets of outriggers 14 is properly adjusted, the four sets of rollers 16 roll to move the entire vehicle body 1 towards the oil and water well. The lowering block 6 is positioned directly above the well, in the center of the oil-water well. Then, the first motor 4 is turned on, which drives the rotating shaft 3 to rotate. The rotating shaft 3 unwinds the rope 5, which in turn moves the lowering block 6 downward to the designated depth. The temperature sensor 7, pressure sensor 8, and pH probe 9 monitor the pressure, temperature, and pH value in the oil-water well in real time. The spacing between the four sets of outriggers 14 can be adjusted according to the size of the well opening to ensure the stability of the vehicle body 1 and to keep the lowering block 6 in the center of the oil-water well, reducing the offset problem caused by the irregularity of the wellbore.

[0024] Please see Figures 1-3 and Figure 5As one embodiment of the outriggers 14, each of the four outriggers 14 in this utility model is provided with a chamber, and each of the four chambers is rotatably provided with a screw 18. Each of the four moving rods 13 is provided with a second motor 17 at its top end. The output ends of the four second motors 17 pass through the four moving rods 13 and are connected to the four screws 18. The four support adjustment rods 15 slide in the chambers of the four outriggers 14. Each of the four support adjustment rods 15 is provided with a threaded groove at its top end. The four support adjustment rods 15 are threadedly connected to the four screws 18. Each of the four moving rods 13 is provided with a through hole. Anchor nails 21 are movably provided in the through holes. Storage boxes 22 are provided on the left and right sides of the bottom of the vehicle body 1. Each of the two storage boxes 22 is provided with two sets of placement chambers. The four anchor nails 21 are placed in the four sets of placement chambers respectively. Specifically, there may be uneven terrain around the oil and water wells. By starting the second motor 17, the second motor 17 drives the screw 18 to rotate. The screw 18 is threadedly connected to the support adjustment rod 15, which slides within the support leg 14 to adjust the length of the support adjustment rod 15. This allows for adjustment of the length of the four sets of support adjustment rods 15 according to different terrains, thereby enhancing the stability of the vehicle body 1. After the vehicle body 1 moves to the designated position, the stability of the vehicle body 1 can be further improved by anchoring the four sets of anchor nails 21 into the ground through the through holes of the four sets of moving rods 13. When the four sets of anchor nails 21 are not in use, they are placed in the four placement chambers of the two sets of storage boxes 22 for easy storage.

[0025] Please see Figure 2 As one embodiment of the rotating shaft 3, another set of the vertical plates 2 in this utility model are provided with a depth encoder 19 at their outer ends, and the input end of the depth encoder 19 is connected to the rotating shaft 3. Specifically, as the cable is released and retracted, the rotating shaft 3 rotates, and the depth encoder 19 records the number of rotations of the rotating shaft 3, which is then converted into the actual release length of the rotating shaft 3, thereby accurately controlling the release depth of the release block 6 and providing very accurate depth information.

[0026] Please refer to Figures 1-3 and Figure 6 As a further embodiment of the lowering block 6: a counterweight 20 is provided at the top of the lowering block 6, and a through hole is provided in the middle of the counterweight 20, and the rope 5 is located in the through hole of the counterweight 20. Specifically, the counterweight 20 helps to keep the lowering block 6 descending vertically as a whole, preventing the lowering block 6 from tilting due to fluid flow or well wall friction.

[0027] This invention provides rubber rings on all four sets of rollers 16, which can increase the friction of the rollers 16, thereby improving the stability of the vehicle body 1 when it moves to the designated position.

[0028] This utility model provides hooks 23 on the left and right sides of the top of the counterweight 20, and two sets of hanging rings 24 at the bottom of the vehicle body 1. The two sets of hooks 23 and the two sets of hanging rings 24 are positioned correspondingly. When it is not necessary to monitor the oil and water wells, the rope 5 is wound on the rotating shaft 3, and the two sets of hooks 23 and the two sets of hanging rings 24 on the counterweight 20 are used to fix the lower block 6 as a whole, which facilitates the overall mounting and fixing of the lower block 6.

[0029] In summary, when using the overall equipment: When real-time monitoring of pressure, temperature, and pH value within the oil and water well is required, the spacing of the four sets of outriggers 14 is adjusted according to the well's diameter. The four sets of hydraulic cylinders 12 are then activated, driving the four sets of moving rods 13. The four sets of T-blocks 25 slide within the four T-slots of the vehicle body 1. The four sets of moving rods 13, through the four sets of outriggers 14 and the four sets of adjusting rods 15, drive the four sets of rollers 16 to roll on the ground. Once the spacing of the four sets of outriggers 14 is properly adjusted, the four sets of rollers 16... The rolling mechanism moves the entire vehicle body 1 directly above the oil-water well, positioning the lowering block 6 in the center of the well. Then, the first motor 4 is activated, which in turn drives the rotating shaft 3 to rotate. The rotating shaft 3 then unwinds the rope 5, causing the lowering block 6 to move downwards. With the help of the counterweight 20, the lowering block 6 descends vertically to the designated depth. The temperature sensor 7, pressure sensor 8, and pH probe 9 then monitor the pressure, temperature, and pH value in the oil-water well in real time.

[0030] There may be unevenness around the oil and water well. By starting the second motor 17, the second motor 17 drives the screw 18 to rotate. The screw 18 is threadedly connected to the support adjustment rod 15, and the support adjustment rod 15 slides in the support leg 14, thereby adjusting the length of the support adjustment rod 15.

[0031] As the cable is released and retracted, the rotating shaft 3 rotates, and the depth encoder 19 records the number of rotations of the rotating shaft 3, which is then converted into the actual release length of the rotating shaft 3, thereby accurately controlling the release depth of the release block 6.

[0032] After the vehicle body 1 moves to the designated position, it is anchored to the ground by passing the four sets of anchor bolts 21 through the through holes of the four sets of moving rods 13 respectively. When the four sets of anchor bolts 21 are not in use, the four sets of anchor bolts 21 are placed in the four sets of placement chambers in the two sets of storage boxes 22 respectively.

[0033] When monitoring of the oil and water wells is not required, the rope 5 is wound onto the shaft 3, and the two sets of hooks 23 and two sets of hanging rings 24 on the counterweight block 20 are attached to fix the lowered block 6 as a whole.

[0034] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents. In all the solutions mentioned above, the operation of electrical components is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies. Therefore, their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A real-time downhole monitoring device for acidizing oil and water wells, comprising a vehicle body (1), characterized in that: Two sets of upright plates (2) are provided at the top of the vehicle body (1). A rotating shaft (3) is rotatably provided between the two sets of upright plates (2). A first motor (4) is provided on one set of upright plates (2). The output end of the first motor (4) is connected to the rotating shaft (3). A rope (5) is wound on the rotating shaft (3). A through hole is provided in the middle of the vehicle body (1). One end of the rope (5) passes through the through hole and a lowering block (6) is provided. A temperature sensor (7), a pressure sensor (8), and a pH probe (9) are provided on the lowering block (6). A display (10) is provided at the top of the vehicle body (1). The temperature sensor (7), pressure sensor (8) and pH probe (9) are all electrically connected to the display (10). The front and rear sides of the bottom of the vehicle body (1) are provided with fixing blocks (11). The left and right ends of the two sets of fixing blocks (11) are provided with hydraulic cylinders (12). The output ends of the four sets of hydraulic cylinders (12) are provided with moving rods (13). The bottom ends of the four sets of moving rods (13) are provided with support legs (14). The bottom ends of the four sets of support legs (14) are slidably provided with support adjustment rods (15). The bottom ends of the four sets of support adjustment rods (15) are provided with rollers (16).

2. The downhole real-time monitoring device for acidizing oil and water wells according to claim 1, characterized in that: four sets of... Each of the four support legs (14) is provided with a chamber, and each of the four chambers is provided with a screw (18) rotatably mounted. Each of the four moving rods (13) is provided with a second motor (17) at its top. The output ends of the four second motors (17) pass through the four moving rods (13) and are connected to the four screws (18). The four support adjustment rods (15) slide in the chambers of the four support legs (14). Each of the four support adjustment rods (15) is provided with a threaded groove at its top. The four support adjustment rods (15) are threadedly connected to the four screws (18).

3. The downhole real-time monitoring device for acidizing oil and water wells according to claim 1, characterized in that: Another set of the vertical plates (2) are provided with a depth encoder (19) at the outer end, and the input end of the depth encoder (19) is connected to the rotating shaft (3).

4. The downhole real-time monitoring device for acidizing oil and water wells according to claim 1, characterized in that: The top of the lowering block (6) is provided with a counterweight (20), and the middle of the counterweight (20) is provided with a through hole, and the rope (5) is located in the through hole of the counterweight (20).

5. The downhole real-time monitoring device for acidizing oil and water wells according to claim 1, characterized in that: four sets of... Each roller (16) is equipped with a rubber ring.

6. The downhole real-time monitoring device for acidizing oil and water wells according to claim 2, characterized in that: four sets of... Each of the movable rods (13) is provided with a through hole, and four sets of the through holes are provided with anchor nails (21).

7. The downhole real-time monitoring device for acidizing oil and water wells according to claim 6, characterized in that: Storage boxes (22) are provided on the left and right sides of the bottom of the vehicle body (1). Two sets of placement chambers are connected to each other on the two sets of storage boxes (22). The four sets of anchors (21) are placed in the four sets of placement chambers respectively.

8. The downhole real-time monitoring device for acidizing oil and water wells according to claim 4, characterized in that: Hooks (23) are provided on the left and right sides of the top of the counterweight (20), and two sets of hanging rings (24) are provided at the bottom of the vehicle body (1). The two sets of hooks (23) correspond to the two sets of hanging rings (24).

9. A real-time downhole monitoring device for acidizing oil and water wells according to claim 1, characterized in that: four sets of... The top of each of the moving rods (13) is provided with a T-shaped block (25), and the left front side, left rear side, right front side and right rear side of the bottom of the vehicle body (1) are provided with T-shaped grooves. The four sets of T-shaped blocks (25) slide in the four sets of T-shaped grooves.

Images