Drilling mud liquid level monitoring system

Abstract

The utility model discloses a drilling mud liquid level monitoring system, which relates to the technical field of drilling fluid level monitoring and comprises a drilling mud liquid level alarm, and the drilling mud liquid level alarm comprises a floater, a floater vertical rod, a guide plate, a stroke rod and a top box. The displacement sensor is assembled in the top box and is connected with the guide plate; the data monitoring terminal is assembled in the top box and is in communication connection with the displacement sensor; and the data display terminal is in wireless communication connection with the data monitoring terminal. On the basis of an existing pneumatic drilling mud liquid level alarm, an electric mud liquid level alarm function is added, the displacement sensor detects height data of the guide plate, the drilling mud liquid level in a mud tank is indirectly measured, and the data monitoring terminal collects the height data detected by the displacement sensor. The data display terminal obtains drilling mud liquid level data in the mud tank through the detected height data and displays and alarms the drilling mud liquid level data so as to be suitable for some drilling occasions without air sources on drilling sites.

Description

TECHNICAL FIELD

[0001] The utility model relates to drilling fluid level monitoring technical field, more specifically relates to a kind of drilling mud fluid level monitoring system. BACKGROUND

[0002] In oil drilling, the drilling mud fluid level in the mud tank needs to be monitored. The volume of mud in the mud tank can intuitively reflect the downhole condition, and is closely related to well control safety. If the pressure is not balanced in time, it is likely to cause blowout, overflow and other accidents. Real-time and accurate measurement of the mud level in the mud tank on the ground can help to master the downhole condition in the first time, which is of great significance to accident judgment and well control safety.

[0003] In the prior art, a patent with publication number CN200962203Y discloses a drilling mud fluid level alarm for mud level alarm, which belongs to the manufacturing technical field of drilling mud fluid level alarm device. The utility model changes the problem of inaccurate measurement of liquid level by soft rope connection float in the prior art, and the use of sound waves or light electronic products to test the liquid level, which is easy to be damaged in harsh environment. The utility model adopts the principle of mechanical transmission and pneumatic sound alarm, and designs a drilling mud fluid level alarm with hard connection between the float, testing and alarm equipment. As long as the pre-setting is correct, the measurement will be accurate. Since there is no electronic component, it can adapt to harsh working environment during use, and it is convenient to reset.

[0004] The drilling mud fluid level alarm disclosed in the above patent uses pneumatic alarm. However, in some special drilling situations, there is no gas source or unstable gas source in the drilling site, which leads to the failure of the drilling mud fluid level alarm to work normally, so it needs to be improved. UTILITY MODEL CONTENT

[0005] In order to overcome the defects in the above-mentioned prior art, the purpose of the utility model is to provide a drilling mud fluid level monitoring system to solve the problem of the drilling mud fluid level alarm failing to work normally in the above-mentioned prior art in the field without gas source or unstable gas source drilling situation. The utility model improves the mud fluid level alarm by adding electric alarm function, which makes it suitable for the working condition of field data information remote transmission in the drilling site without gas source or unstable gas source. Electric alarm and mechanical alarm can better double-protect the on-site liquid level monitoring.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A drilling mud fluid level monitoring system, comprising:

[0008] The drilling mud level alarm device assembled on the mud tank comprises a float, a float vertical rod, a guide plate, a stroke rod and a top box, the bottom end of the float vertical rod is connected with the float, the top end is connected with the guide plate, the guide plate is slidingly assembled on the stroke rod, the stroke rod is arranged in parallel with the float vertical rod, the top is assembled in the top box and is connected with a pneumatic alarm device;

[0009] A displacement sensor is assembled in the top box and connected with the guide plate to detect the height data of the guide plate.

[0010] A data monitoring terminal is assembled in the top box and is in communication connection with the displacement sensor to collect the height data detected by the displacement sensor.

[0011] A data display terminal is in wireless communication connection with the data monitoring terminal, uses the detected height data to obtain the drilling mud level data in the mud tank and displays and alarms.

[0012] Preferably, an audible and visual alarm device is assembled on the top box and is in wireless communication connection with the data display terminal.

[0013] Preferably, the displacement sensor is a pull rope displacement sensor, the top box is an explosion-proof box and is provided with an explosion-proof antenna at the top.

[0014] Preferably, the drilling mud level alarm device further comprises a bottom box, a ruler and a vertical column.

[0015] The bottom end of the bottom box is opened and is assembled on the tank surface grating plate of the mud tank, the float vertical rod penetrates upward through the bottom box, the ruler and the vertical column are both vertically arranged, the bottom ends are both connected with the bottom box and the top ends are both connected with the top box.

[0016] Preferably, the float vertical rod and the stroke rod are both located between the ruler and the vertical column, the guide plate is horizontally arranged and is rollingly assembled on the ruler and the vertical column at the left and right ends.

[0017] Preferably, a first pin hole is arranged on the sleeve of the guide plate which extends upward, a plurality of second pin holes are uniformly arranged on the top of the float vertical rod in the vertical direction, and a pin shaft penetrates through the first pin hole and the second pin hole.

[0018] Preferably, the stroke rod is slidingly assembled in the top box at the upper part, is provided with an upper limit block and a lower limit block, and the guide plate is slidingly assembled on the stroke rod between the upper limit block and the lower limit block.

[0019] Preferably, the pneumatic alarm device comprises a yoke mechanism, a gas valve mechanism and a gas horn, the yoke mechanism is assembled on the upper part of the stroke rod and located in the top box, the gas valve mechanism is connected with the yoke mechanism and the gas horn respectively, the stroke rod drives the yoke mechanism to open the gas valve mechanism, and the gas source drives the gas horn to sound alarm.

[0020] Preferably, the yoke mechanism comprises an upper centralizing sleeve, a lower centralizing sleeve, an upper reset spring, a lower reset spring, a lock tongue and a yoke.

[0021] The upper centralizing sleeve and the lower centralizing sleeve are assembled at the upper and lower ends in the top box, the upper part of the stroke rod passes through the lower centralizing sleeve and is assembled in the upper centralizing sleeve, the lock tongue is assembled on the stroke rod in the top box, the upper reset spring and the lower reset spring are assembled on the stroke rod between the lock tongue and the upper centralizing sleeve and between the lock tongue and the lower centralizing sleeve respectively, and the yoke is assembled on the lock tongue.

[0022] Preferably, the gas valve mechanism comprises an upper gas valve and a lower gas valve, the yoke is located between the valve rods of the upper gas valve and the lower gas valve, a gas source main pipe passes through the stand and is connected with the upper gas valve and the lower gas valve through two gas source branch pipes respectively, and the upper gas valve and the lower gas valve are connected with the gas horn through a gas source pipeline.

[0023] The present application has the advantages that:

[0024] The drilling mud liquid level monitoring system provided by the present application increases the electric mud liquid level alarm function on the basis of the existing pneumatic drilling mud liquid level alarm device, the displacement sensor detects the height data of the guide plate, indirectly measures the drilling mud liquid level in the mud tank, the data monitoring terminal collects the height data detected by the displacement sensor and transmits the height data to the data display terminal, the data display terminal obtains the drilling mud liquid level data in the mud tank by using the detected height data and displays and alarms the drilling mud liquid level data, and the drilling mud liquid level monitoring system is suitable for the working conditions that the drilling site has no gas source or the gas source is unstable and the on-site data information needs to be transmitted.

[0025] The drilling mud liquid level monitoring system provided by the present application has two sets of alarm systems, the displacement sensor, the data monitoring terminal and the data display terminal form the first set of electric alarm system and are suitable for the drilling site that has no gas source or the gas source is unstable, the pneumatic alarm device forms the second set of pneumatic alarm system and is suitable for the drilling site that has the gas source, and the two sets of alarm systems are used in cooperation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the drilling mud liquid level monitoring system of the present application;

[0027] Figure 2 It is a front view of the drilling mud liquid level alarm device of the present application;

[0028] Figure 3 It isFigure 2 An enlarged view of the upper portion of

[0029] Figure 4 A side view of the drilling mud liquid level alarm of the present application;

[0030] Reference signs:

[0031] 1. A drilling mud liquid level alarm; 101. A float; 102. A float vertical rod; 103. A guide plate; 104. A stroke rod; 105. A top box; 106. A bottom box; 107. A scale; 108. A vertical column; 109. An upper limit block; 110. A lower limit block; 111. An air horn; 112. An upper centralizing sleeve; 113. A lower centralizing sleeve; 114. An upper return spring; 115. A lower return spring; 116. A locking tongue; 117. A yoke; 118. An upper air valve; 119. A lower air valve; 2. A displacement sensor; 3. A data monitoring terminal; 4. A data display terminal; 5. An audible and visual alarm; 6. An explosion-proof antenna. DETAILED DESCRIPTION

[0032] The concept, specific structure and technical effects of the present application will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present application.

[0033] Embodiment 1

[0034] A drilling mud liquid level monitoring system, as shown in Figures 1-4 , comprising:

[0035] A drilling mud liquid level alarm 1 assembled on a mud tank, the drilling mud liquid level alarm 1 comprising a float 101, a float vertical rod 102, a guide plate 103, a stroke rod 104 and a top box 105, the float vertical rod 102 being connected with the float 101 at the bottom end and connected with the guide plate 103 at the top end, the guide plate 103 being slidingly assembled on the stroke rod 104, the stroke rod 104 being arranged in parallel with the float vertical rod 102, the top of the stroke rod 104 being assembled in the top box 105 and connected with a pneumatic alarm device;

[0036] A displacement sensor 2 assembled in the top box 105 and connected with the guide plate 103 to detect the height data of the guide plate 103;

[0037] A data monitoring terminal 3 assembled in the top box 105 and in communication connection with the displacement sensor 2 to collect the height data detected by the displacement sensor 2;

[0038] A data display terminal 4 in wireless communication connection with the data monitoring terminal 3, obtaining the drilling mud liquid level data in the mud tank by using the detected height data and displaying and alarming.

[0039] In this embodiment, the data monitoring terminal 3 can be a conventional data acquisition module, and the data display terminal 4 can be a conventional computer. On the drilling mud level alarm 1, a displacement sensor 2 (pulling rope sensor) is installed, the displacement data is collected to the data monitoring terminal 3 through the RS485 interface, all data is sent to the explosion-proof data display terminal 4 through the wireless LORA / WIFI network by the data monitoring terminal 3, remote monitoring is realized, and the explosion-proof data display terminal converts the displacement data into liquid level and volume data. Real-time data display, storage, alarm and other functions are realized. The explosion-proof data display terminal can output data to a third-party system.

[0040] Displacement sensor corresponding volume principle:

[0041] The data collected by the displacement sensor is length data, that is, how many meters, corresponding to the liquid level height of 0 to 2 meters, the system can set the volume lower limit to 0 cubic meters and the volume upper limit to 100 cubic meters, 0-2 meters corresponding to 0-100 square, when the liquid level height is 1 meter, the corresponding volume after conversion is 50 cubic meters, the system increases the multi-point calibration function, that is, the height data of the 0 square volume scale is marked as zero point, and the height data of the full range of the volume scale is marked as full range.

[0042] For example: 0 square corresponds to a height of 0.5 meters, and 100 square full range corresponds to a height of 2.5 meters, so when the collected height is 1.5 meters, the corresponding volume is 50 square. The system does linear processing on the data. In order to ensure its accuracy, multi-point data calibration of volume and height can be performed.

[0043] Only the conversion formula of zero point and range is as follows:

[0044] L: collected liquid level height

[0045] L_min: liquid level zero point

[0046] L_max: liquid level full range

[0047] Q: actual volume

[0048] Q_min: volume scale zero point

[0049] Q_max: volume scale full range

[0050] Q=(Q_max-Q_min)*(L-L_min) / (L_max-L_min)

[0051] The multi-point calibration formula is the same, which belongs to multi-section calibration, as follows:

[0052]

[0053] For example Figure 1As shown in the figure, the top box 105 is equipped with an audible and visual alarm 5, which is wirelessly connected with the data display terminal 4. When the display terminal 4 monitors that the drilling mud level is too high or too low, the audible and visual alarm 5 is controlled to give an audible and visual alarm.

[0054] In this embodiment, the displacement sensor 2 is a pull rope displacement sensor, the top box 105 is an explosion-proof box and is equipped with an explosion-proof antenna 6 at the top. The top box 105 is also provided with power supply for the displacement sensor 2, the data monitoring terminal 3 and the like.

[0055] Embodiment 2

[0056] This embodiment is based on embodiment 1 and further describes the drilling mud level alarm 1, as shown in the figures, Figure 2 and 3 The drilling mud level alarm 1 further includes a bottom box 106, a scale 107 and a stand 108. The bottom box 106 is open at the bottom end and is equipped on the mud tank surface grid, and the float vertical rod 102 passes through the bottom box 106 upward. The scale 107 and the stand 108 are both vertically arranged, and the bottom ends are both connected with the bottom box 106, and the top ends are both connected with the top box 105.

[0057] As shown in the figure, Figure 2 The float vertical rod 102 and the stroke rod 104 are both located between the scale 107 and the stand 108, and the guide plate 103 is horizontally arranged and is rollingly equipped on the scale 107 and the stand 108 at the left and right ends, so as to slide up and down.

[0058] As shown in the figure, Figure 2 The sleeve that the guide plate 103 extends upward is provided with a first pin hole, and the top of the float vertical rod 102 is uniformly provided with a plurality of second pin holes in the vertical direction, and the pin shaft passes through the first pin hole and the second pin hole. The guide plate 103 can be assembled at different heights of the float vertical rod 102 by assembling the pin shaft in the second pin hole at different heights to adapt to different working conditions.

[0059] As shown in the figure, Figure 2 The upper part of the stroke rod 104 is slidingly equipped in the top box 105, and the stroke rod 104 is provided with an upper limit block 109 and a lower limit block 110, and the guide plate 103 is slidingly equipped on the stroke rod 104 between the upper limit block 109 and the lower limit block 110. The upper limit block 109 and the lower limit block 110 are used to limit the up and down sliding of the guide plate 103 on the stroke rod 104.

[0060] As shown in the figure, Figure 2 and 3As shown in the figure, the pneumatic alarm device comprises a fork mechanism, a gas valve mechanism and a gas horn 111, the fork mechanism is assembled on the upper part of the stroke rod 104 and located in the top box 105, the gas valve mechanism is connected with the fork mechanism and the gas horn 111 respectively, the stroke rod 104 drives the fork mechanism to open the gas valve mechanism, and the gas source drives the gas horn 111 to sound alarm.

[0061] As shown in the figure, Figure 2 and 3 As shown in the figure, the fork mechanism comprises an upper centralizing sleeve 112, a lower centralizing sleeve 113, an upper reset spring 114, a lower reset spring 115, a lock tongue 116 and a fork 117; the upper centralizing sleeve 112 and the lower centralizing sleeve 113 are assembled at the upper and lower ends in the top box 105, the upper part of the stroke rod 104 passes through the lower centralizing sleeve 113 upwards and is assembled in the upper centralizing sleeve 112, the lock tongue 116 is assembled on the stroke rod 104 in the top box 105, the upper reset spring 114 and the lower reset spring 115 are respectively assembled on the stroke rod 104 between the lock tongue 116 and the upper centralizing sleeve 112 and between the lock tongue 116 and the lower centralizing sleeve 113, and the fork 117 is assembled on the lock tongue 116.

[0062] As shown in the figure, Figure 2 and 3 As shown in the figure, the gas valve mechanism comprises an upper gas valve 118 and a lower gas valve 119, the fork 117 is located between the valve rods of the upper gas valve 118 and the lower gas valve 119, the gas source main pipe passes through the stand column 108 and is connected with the upper gas valve 118 and the lower gas valve 119 through two gas source branch pipes respectively, and the upper gas valve 118 and the lower gas valve 119 are connected with the gas horn 111 through the gas source pipeline.

[0063] In the embodiment, the pneumatic alarm principle of the pneumatic alarm device is similar to that of CN200962203Y in the background art, which will not be repeated here.

[0064] The embodiments of the utility model have been specifically described above, but the utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent or replacements are all included in the range defined by the claims of the utility model.

Claims

1. A drilling mud level monitoring system, characterized by, The application relates to a drilling mud liquid level alarm device, which comprises a drilling mud liquid level alarm (1) assembled on a mud tank, a float (101), a float vertical rod (102), a guide plate (103), a stroke rod (104) and a top box (105), the bottom end of the float vertical rod (102) is connected with the float (101), the top end of the float vertical rod (102) is connected with the guide plate (103), the guide plate (103) is slidingly assembled on the stroke rod (104), the stroke rod (104) is arranged in parallel with the float vertical rod (102), the top of the stroke rod (104) is assembled in the top box (105) and is connected with a pneumatic alarm device. A displacement sensor (2) is assembled in the top box (105) and is connected with the guide plate (103) to detect the height data of the guide plate (103). A data monitoring terminal (3) is assembled in the top box (105) and is connected in communication with the displacement sensor (2) to collect the height data detected by the displacement sensor (2). A data display terminal (4) is wirelessly connected with the data monitoring terminal (3), uses the detected height data to obtain the drilling mud liquid level data in the mud tank and displays and alarms the drilling mud liquid level data. An audible and visual alarm (5) is assembled on the top box (105) and is wirelessly connected with the data display terminal (4).

2. A drilling mud level monitoring system as claimed in claim 1, wherein, The displacement sensor (2) is a pull rope displacement sensor, the top box (105) is an explosion-proof box and is provided with an explosion-proof antenna (6) at the top.

3. A drilling mud level monitoring system as claimed in claim 1, wherein, The drilling mud liquid level alarm (1) further comprises a bottom box (106), a scale (107) and a vertical column (108).

4. A drilling mud level monitoring system as claimed in claim 1, wherein, The bottom end of the bottom box (106) is opened and is assembled on a mud tank surface grating plate, the float vertical rod (102) penetrates the bottom box (106) upwards, the scale (107) and the vertical column (108) are vertically arranged, the bottom ends of the scale (107) and the vertical column (108) are connected with the bottom box (106), and the top ends of the scale (107) and the vertical column (108) are connected with the top box (105). The float vertical rod (102) and the stroke rod (104) are located between the scale (107) and the vertical column (108), the guide plate (103) is horizontally arranged and is rollingly assembled on the scale (107) and the vertical column (108) at the left and right ends of the guide plate (103).

5. A drilling mud level monitoring system as claimed in claim 4, wherein, A first pin hole is arranged on a sleeve which is protruded upwards from the guide plate (103), a plurality of second pin holes are uniformly arranged on the top of the float vertical rod (102) in the vertical direction, and a pin shaft penetrates the first pin hole and the second pin hole.

6. A drilling mud level monitoring system as claimed in claim 1, wherein, The upper part of the stroke rod (104) is slidingly assembled in the top box (105), the stroke rod (104) is provided with an upper limit block (109) and a lower limit block (110), and the guide plate (103) is slidingly assembled on the stroke rod (104) between the upper limit block (109) and the lower limit block (110).

7. A drilling mud level monitoring system as claimed in claim 1, wherein, ​ 8. A drilling mud level monitoring system as defined in claim 1, wherein, The pneumatic alarm device comprises a fork mechanism, a gas valve mechanism and a gas horn (111), the fork mechanism is assembled on the upper part of a stroke rod (104) and located in a top box (105), the gas valve mechanism is connected with the fork mechanism and the gas horn (111) respectively, the stroke rod (104) drives the fork mechanism to open the gas valve mechanism, and a gas source drives the gas horn (111) to sound alarm.

9. A drilling mud level monitoring system as claimed in claim 8, wherein, The fork mechanism comprises an upper righting sleeve (112), a lower righting sleeve (113), an upper reset spring (114), a lower reset spring (115), a lock tongue (116) and a fork (117). The upper righting sleeve (112) and the lower righting sleeve (113) are assembled at the upper and lower ends in the top box (105), the upper part of the stroke rod (104) passes through the lower righting sleeve (113) upwardly and is assembled in the upper righting sleeve (112), the lock tongue (116) is assembled on the stroke rod (104) in the top box (105), the upper reset spring (114) and the lower reset spring (115) are respectively assembled on the stroke rod (104) between the lock tongue (116) and the upper righting sleeve (112) and between the lock tongue (116) and the lower righting sleeve (113), and the fork (117) is assembled on the lock tongue (116).

10. A drilling mud level monitoring system as claimed in claim 9, wherein, The gas valve mechanism comprises an upper gas valve (118) and a lower gas valve (119), the fork (117) is located between valve rods of the upper gas valve (118) and the lower gas valve (119), a gas source main pipe passes through a stand column (108) and is connected with the upper gas valve (118) and the lower gas valve (119) through two gas source branch pipes respectively, and the upper gas valve (118) and the lower gas valve (119) are connected with the gas horn (111) through a gas source pipeline.

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