Drilling fluid leakage monitoring and alarming equipment

Abstract

The utility model belongs to the technical field of drilling fluid monitoring, and particularly relates to drilling fluid leakage monitoring and alarming equipment. Comprising a guide cylinder main body and an alarm mechanism, a floater is arranged in the guide cylinder main body, an acceleration sensor is arranged in the guide cylinder main body, a guide cross rod is arranged in the guide cylinder main body, a mounting box body is arranged at the top of the guide cylinder main body, and a first button switch is arranged in the mounting box body; a second button switch is arranged in the mounting box body, a position sensor is arranged on the inner wall of one side of the mounting box body, a liquid extraction pump is arranged on one side of the mounting box body, the output end of the liquid extraction pump is connected with a liquid inlet hose in a penetrating mode, an alarm assembly is arranged in the alarm mechanism, and a monitoring station is arranged on one side of the alarm mechanism. According to the embodiment, the liquid level and the liquid leakage condition can be monitored, and meanwhile the effect of improving the equipment overhaul convenience is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling fluid monitoring, and particularly relates to a drilling fluid leakage monitoring and alarm device. Background Art

[0002] For the development of oil and gas fields, drilling fluid is the core. At the same time, due to the complex conditions in the formation, it is not only easy to encounter some fractured formations, which easily cause the loss of drilling fluid, but also possible to encounter some high-pressure formations, causing the overflow and well kick of drilling fluid. Both of these situations will cause a large loss of drilling fluid and bring serious safety hazards to the wells being developed. Therefore, in the process of drilling development, it is necessary to monitor the liquid level and leakage of drilling fluid.

[0003] After searching, in the prior art, Chinese patent announcement number: CN216593685U, authorization date: 2022-05-24, discloses a new type of drilling fluid level monitoring and alarm device, including a guide tube and an alarm tube arranged above the guide tube, a float is arranged in the guide tube, the float can move up and down in the guide tube, a plurality of mounting through holes are arranged on the side wall of the guide tube, and mounting accessories matching the mounting through holes are arranged, and the mounting accessories include a block, a sealing block and an overflow pipe joint; a guide vertical rod is fixedly arranged on the upper part of the float, one end of the guide vertical rod extends into the alarm tube and is connected to a guide cross bar; a first button switch and a second button switch are arranged in the alarm tube, and the guide cross bar can control the opening and closing of the first button switch and the second button switch under certain conditions. By setting the block and the sealing block, and limiting the setting method of the two button switches at the same time, the device can set the high liquid level and the low liquid level according to the actual situation on site.

[0004] However, the device still has the following defects: Although the above embodiment can detect and alarm the drilling fluid level without adding external power components and signal transmission components, and is more suitable for the oil field environment, the device cannot monitor the leakage phenomenon. When the leakage occurs, the change of the liquid level is different from the normal situation. Therefore, the device has limitations in monitoring the leakage. Utility Model Content

[0005] In view of the above problems, the utility model provides a drilling fluid leakage monitoring and alarm device, including a guide tube body and an alarm mechanism, a float is arranged inside the guide tube body, an acceleration sensor is arranged inside the guide tube body, a guide cross bar is arranged inside the guide tube body, a mounting box is arranged on the top of the guide tube body, a plurality of mounting through holes are opened on the surface of the guide tube body, and an overflow pipe interface is arranged on the outer wall of the guide tube body;

[0006] A first button switch is provided inside the installation box, a second button switch is provided inside the installation box, a position sensor is provided on an inner wall of one side of the installation box, a control button is provided inside the installation box, a liquid pump is provided on one side of the installation box, an output end of the liquid pump is connected with a liquid inlet hose, a liquid outlet hose is provided on one side of the installation box, an alarm component is provided inside the alarm mechanism, and a monitoring station is provided on one side of the alarm mechanism.

[0007] Furthermore, the float is arranged without contact with the inner wall of the guide tube body, a floating bottom plate is arranged inside the guide tube body, the floating bottom plate is located at the bottom end of the float, and the float is arranged in a semicircular structure, and the acceleration sensor is located inside the float.

[0008] Furthermore, a connecting rod is provided inside the guide tube body, one end of the connecting rod is connected to the top of the float, and the guide cross bar is arranged in an L-shaped structure.

[0009] Furthermore, one end of the guide cross bar is movably connected to one end of the connecting support rod, the other end of the guide cross bar passes through the top of the guide tube body, and one end of the guide cross bar is located inside the installation box.

[0010] Furthermore, several groups of the installation through holes are arranged at equal intervals with the central axis of the guide tube body as the center, and pistons are movably sleeved inside the several groups of the installation through holes, and the overflow pipe interface is movably sleeved with a group of the installation through holes.

[0011] Furthermore, the first button switch is located at the bottom end of the installation box, the second button switch is located at the top end of the installation box, and the first button switch and the second button switch are symmetrically arranged with the central axis of the installation box as the center.

[0012] Furthermore, the other end of the liquid inlet hose is connected to the overflow pipe interface, and one end of the liquid outlet hose is connected to the liquid suction pump.

[0013] Furthermore, the first button switch, the second button switch, the acceleration sensor and the position sensor are all electrically connected to the alarm mechanism, and the monitoring station is electrically connected to the alarm mechanism.

[0014] The beneficial effects of the utility model are:

[0015] 1. A liquid pump is provided on one side of the installation box, and a liquid inlet hose is connected through the output end of the liquid pump, and the other end of the liquid inlet hose is connected to the overflow pipe interface. A liquid outlet hose is provided on one side of the installation box, and one end of the liquid outlet hose is connected to the liquid pump. The overflowed drilling fluid can be extracted to prevent excess drilling fluid from flowing out through the overflow pipe interface and re-entering the guide tube body, while achieving the effect of improving the practicality of the equipment.

[0016] 2. An acceleration sensor is provided inside the guide tube body. The acceleration sensor is located inside the float and can monitor the acceleration of the float when it moves up and down. If the drilling fluid is lost, the movement speed of the float will be different from usual. A position sensor is provided on the inner wall of one side of the installation box. The position of the guide cross bar is sensed by the position sensor. The acceleration sensor and the position sensor are electrically connected to the alarm mechanism, and the liquid level and leakage can be separately alarmed, which is convenient for the staff to carry out inspection and maintenance in time. The liquid level and leakage can be monitored while achieving the effect of improving the convenience of equipment maintenance.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure according to an embodiment of the utility model is shown;

[0020] Figure 2 A schematic cross-sectional view of the guide tube body according to an embodiment of the utility model is shown;

[0021] Figure 3 A schematic cross-sectional view of an installation box according to an embodiment of the utility model is shown;

[0022] Figure 4 It shows a schematic diagram of the enlarged structure of point A according to an embodiment of the utility model;

[0023] Figure 5A flowchart of an alarm mechanism system according to an embodiment of the utility model is shown.

[0024] In the figure: 1. guide tube body; 2. float; 3. floating bottom plate; 4. liquid inlet port; 5. acceleration sensor; 6. connecting support rod; 7. guide cross bar; 8. installation through hole; 9. overflow pipe interface; 10. installation box; 11. first button switch; 12. second button switch; 13. position sensor; 14. control button; 15. liquid pump; 16. liquid inlet hose; 17. liquid outlet hose; 18. alarm mechanism; 19. alarm component; 20. monitoring station. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model embodiment provides a drilling fluid leakage monitoring and alarm device, including a guide tube body 1 and an alarm mechanism 18; illustratively, as Figure 1-5 shown.

[0027] A float 2 is provided inside the guide tube body 1, and the float 2 is arranged without contacting the inner wall of the guide tube body 1. A floating bottom plate 3 is provided inside the guide tube body 1, and the floating bottom plate 3 is located at the bottom end of the float 2, and the float 2 is arranged in a semicircular structure. A liquid inlet port 4 is opened at the bottom end of the guide tube body 1, and the central axis of the liquid inlet port 4 is located on the same straight line as the central axis of the guide tube body 1. An acceleration sensor 5 is provided inside the guide tube body 1;

[0028] The acceleration sensor 5 is located inside the float 2, a connecting rod 6 is provided inside the guide tube body 1, one end of the connecting rod 6 is connected to the top of the float 2, a guide cross bar 7 is provided inside the guide tube body 1, the guide cross bar 7 is arranged in an L-shaped structure, one end of the guide cross bar 7 is movably connected to one end of the connecting rod 6, the other end of the guide cross bar 7 passes through the top of the guide tube body 1, and a mounting box 10 is provided on the top of the guide tube body 1;

[0029] One end of the guide cross bar 7 is located inside the installation box 10, and a plurality of groups of installation through holes 8 are opened on the surface of the guide cylinder body 1, and the plurality of groups of installation through holes 8 are arranged at equal intervals with the central axis of the guide cylinder body 1 as the center, and pistons are movably sleeved inside the plurality of groups of installation through holes 8, and an overflow pipe interface 9 is provided on the outer wall of the guide cylinder body 1, and the overflow pipe interface 9 is movably sleeved with a group of installation through holes 8;

[0030] A first button switch 11 is provided inside the installation box 10, and a second button switch 12 is provided inside the installation box 10. The first button switch 11 is located at the bottom end of the installation box 10, and the second button switch 12 is located at the top end of the installation box 10. The first button switch 11 and the second button switch 12 are symmetrically arranged with the central axis of the installation box 10 as the center. A position sensor 13 is provided on one inner wall of the installation box 10.

[0031] A control button 14 is provided inside the installation box 10, and the control button 14 is fixedly connected to one end of the guide cross bar 7. A liquid pump 15 is provided on one side of the installation box 10, and a liquid inlet hose 16 is connected to the output end of the liquid pump 15, and the other end of the liquid inlet hose 16 is connected to the overflow pipe interface 9. A liquid outlet hose 17 is provided on one side of the installation box 10, and one end of the liquid outlet hose 17 is connected to the liquid pump 15.

[0032] The first button switch 11, the second button switch 12, the acceleration sensor 5 and the position sensor 13 are all electrically connected to the alarm mechanism 18. An alarm component 19 is provided inside the alarm mechanism 18. A monitoring platform 20 is provided on one side of the alarm mechanism 18. The monitoring platform 20 is electrically connected to the alarm mechanism 18.

[0033] Specifically, an acceleration sensor 5 is provided inside the guide tube body 1. The acceleration sensor 5 is located inside the float 2, and can monitor the acceleration of the float 2 when it moves up and down. If the drilling fluid is lost, the movement speed of the float 2 is different from the usual speed. A position sensor 13 is provided on the inner wall of one side of the installation box 10. The position sensor 13 senses the position of the guide cross bar 7. The acceleration sensor 5 and the position sensor 13 are electrically connected to the alarm mechanism 18, and the height of the liquid level and the leakage can be separately alarmed, which is convenient for the staff to carry out timely inspection and maintenance.

[0034] A liquid pump 15 is provided on one side of the installation box 10, and a liquid inlet hose 16 is connected through the output end of the liquid pump 15. The other end of the liquid inlet hose 16 is connected to the overflow pipe interface 9. A liquid outlet hose 17 is provided on one side of the installation box 10, and one end of the liquid outlet hose 17 is connected to the liquid pump 15, so that overflowed drilling fluid can be extracted to prevent excess drilling fluid from flowing out through the overflow pipe interface 9 and then re-entering the guide tube body 1.

[0035] The working principle of the drilling fluid leakage monitoring and alarm device proposed in the embodiment of the utility model is as follows:

[0036] An acceleration sensor 5 is provided inside the guide tube body 1. The acceleration sensor 5 is located inside the float 2, so that the acceleration of the float 2 when it moves up and down can be monitored. If the drilling fluid is lost, the moving speed of the float 2 will be different from the usual speed. A position sensor 13 is provided on the inner wall of one side of the installation box 10. The position sensor 13 senses the position of the guide cross bar 7. The acceleration sensor 5 and the position sensor 13 are electrically connected to the alarm mechanism 18, so that the height of the liquid level and the leakage can be separately alarmed, which is convenient for the staff to carry out timely inspection and maintenance;

[0037] A liquid pump 15 is provided on one side of the installation box 10, and a liquid inlet hose 16 is connected through the output end of the liquid pump 15. The other end of the liquid inlet hose 16 is connected to the overflow pipe interface 9. A liquid outlet hose 17 is provided on one side of the installation box 10, and one end of the liquid outlet hose 17 is connected to the liquid pump 15. Overflowed drilling fluid can be extracted to prevent excess drilling fluid from flowing out through the overflow pipe interface 9 and then re-entering the guide tube body 1.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drilling fluid leakage monitoring and alarm device, comprising a guide tube body (1) and an alarm mechanism (18), characterized in that: A float (2) is provided inside the guide tube body (1), an acceleration sensor (5) is provided inside the guide tube body (1), a guide cross bar (7) is provided inside the guide tube body (1), a mounting box (10) is provided on the top of the guide tube body (1), a plurality of groups of mounting through holes (8) are provided on the surface of the guide tube body (1), and an overflow pipe interface (9) is provided on the outer wall of the guide tube body (1); A first button switch (11) is provided inside the installation box (10), a second button switch (12) is provided inside the installation box (10), a position sensor (13) is provided on an inner wall of one side of the installation box (10), a control button (14) is provided inside the installation box (10), a liquid pump (15) is provided on one side of the installation box (10), an output end of the liquid pump (15) is connected to a liquid inlet hose (16), a liquid outlet hose (17) is provided on one side of the installation box (10), an alarm assembly (19) is provided inside the alarm mechanism (18), and a monitoring platform (20) is provided on one side of the alarm mechanism (18).

2. The drilling fluid loss monitoring and alarm device according to claim 1 is characterized in that: The float (2) is arranged without contact with the inner wall of the guide tube body (1); a floating bottom plate (3) is arranged inside the guide tube body (1); the floating bottom plate (3) is located at the bottom end of the float (2); the float (2) is arranged in a semicircular structure; and the acceleration sensor (5) is located inside the float (2).

3. The drilling fluid loss monitoring and alarm device according to claim 2 is characterized in that: A connecting rod (6) is provided inside the guide tube body (1), one end of the connecting rod (6) is connected to the top end of the float (2), and the guide cross bar (7) is arranged in an L-shaped structure.

4. The drilling fluid loss monitoring and alarm device according to claim 3 is characterized in that: One end of the guide cross bar (7) is movably connected to one end of the connecting support rod (6), the other end of the guide cross bar (7) passes through the top of the guide tube body (1), and one end of the guide cross bar (7) is located inside the installation box (10).

5. The drilling fluid loss monitoring and alarm device according to claim 1 is characterized in that: The plurality of groups of mounting through holes (8) are arranged at equal intervals with the central axis of the guide tube body (1) as the center, and pistons are movably sleeved inside the plurality of groups of mounting through holes (8), and the overflow pipe interface (9) is movably sleeved with a group of mounting through holes (8).

6. The drilling fluid loss monitoring and alarm device according to claim 2 is characterized in that: The first button switch (11) is located at the bottom end of the installation box (10), and the second button switch (12) is located at the top end of the installation box (10), and the first button switch (11) and the second button switch (12) are symmetrically arranged with the central axis of the installation box (10) as the center.

7. The drilling fluid loss monitoring and alarm device according to claim 1 is characterized in that: The other end of the liquid inlet hose (16) is connected to the overflow pipe interface (9), and one end of the liquid outlet hose (17) is connected to the liquid pump (15).

8. The drilling fluid loss monitoring and alarm device according to claim 2 is characterized in that: The first button switch (11), the second button switch (12), the acceleration sensor (5) and the position sensor (13) are all electrically connected to the alarm mechanism (18), and the monitoring station (20) is electrically connected to the alarm mechanism (18).

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