Drilling fluid chloride ion detection device and detection system

Abstract

The utility model discloses a drilling fluid chloride ion detection device and a detection system, the drilling fluid chloride ion detection device comprises at least one detection box, and the detection box comprises a box body with a containing cavity; the semipermeable membrane is arranged in the containing cavity and divides the containing cavity into a filtering cavity and a detection cavity, the filtering cavity is located above the detection cavity, and the filtering cavity is provided with a liquid inlet and a sewage outlet; the semipermeable membrane is provided with an ion channel and is suitable for blocking and filtering impurity particles in the drilling fluid in the filtering cavity and enabling ions in the drilling fluid to enter the detection cavity below through the ion channel; the potential detection device comprises an electrode assembly and a potential detector connected with the electrode assembly, and the electrode assembly is arranged in the detection cavity and used for forming chloride ion potential in the drilling fluid in the detection cavity. The drilling fluid chloride ion detection device provided by the embodiment of the utility model can be used for continuously monitoring the chloride ion content, has accurate and reliable data, and is more environment-friendly compared with a chemical titration method.

Description

Technical Field

[0001] This utility model relates to the field of chloride ion detection technology in drilling processes, and particularly to a chloride ion detection device and system for drilling fluid. Background Technology

[0002] In petroleum geological exploration, monitoring and recording the chloride ion content in drilling fluid can reflect the distribution of oil and water in the formation. Currently, chemical titration analysis is mainly used for on-site chloride ion monitoring.

[0003] However, chemical titration usually employs the manual titration method with silver nitrate. Due to the human involvement involved, the manual titration method suffers from poor consistency in the detection process, resulting in significant errors in the detection results. Furthermore, chemical titration also has the problems of slow chemical potential reactions and environmental pollution from chemical reagents. Utility Model Content

[0004] This invention provides a drilling fluid chloride ion detection device and system to solve the problems of large errors in chemical titration analysis and environmental pollution caused by chemical reagents in the current drilling fluid chloride ion detection process.

[0005] In a first aspect, this utility model provides a drilling fluid chloride ion detection device, which includes at least one detection chamber, the detection chamber comprising:

[0006] The enclosure has a receiving cavity;

[0007] A semi-permeable membrane is disposed within a receiving cavity, dividing the cavity into a filtration cavity and a detection cavity. The filtration cavity is located above the detection cavity and has an inlet and a drain outlet. The semi-permeable membrane has ion channels and is adapted to filter impurities in the drilling fluid within the filtration cavity, allowing ions from the drilling fluid to enter the detection cavity below via the ion channels.

[0008] A potential detection device includes an electrode assembly and a potential detector connected thereto. The electrode assembly is disposed within the detection chamber and is used to generate a chloride ion potential in the drilling fluid within the detection chamber.

[0009] Specifically, the semipermeable membrane is a reverse osmosis membrane.

[0010] Preferably, the drain outlet is positioned lower than the liquid inlet.

[0011] Optionally, the drilling fluid chloride ion detection device also includes:

[0012] The heater is suitable for heating the drilling fluid in the filter chamber, so that the drilling fluid in the filter chamber is kept in a molten state.

[0013] Furthermore, the detection boxes are multiple units arranged in parallel; the drilling fluid chloride ion detection device also includes:

[0014] The housing, heater, and multiple detection boxes are all housed within the housing.

[0015] On the other hand, this utility model also provides a drilling fluid chloride ion detection system, which includes the aforementioned drilling fluid chloride ion detection device, as well as an equipment box and terminal equipment;

[0016] Both the potential detector and the terminal device are electrically connected to the device box. The device box is adapted to receive chloride ion content information from the potential detector and transmit the chloride ion content information to the terminal device.

[0017] Furthermore, the drilling fluid chloride ion detection system also includes:

[0018] Mud pit, which contains drilling fluid;

[0019] A power lifting component is connected between the mud pit and the inlet of the filter chamber, and is used to transport drilling fluid from the mud pit to the filter chamber.

[0020] Optionally, the power lifting component is a mud pump.

[0021] Optionally, the device box is communicatively connected to the terminal device.

[0022] Preferably, the equipment box is equipped with an indicator light, which is used to display the communication status of the equipment box.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] 1. After the drilling fluid enters the filtration chamber and is filtered through a semi-permeable membrane, impurities in the drilling fluid are blocked within the filtration chamber. Chloride ions in the drilling fluid will enter the detection chamber below through the ion channel along with the aqueous solution. When the electrode assembly is energized, a chloride ion potential can be generated in the drilling fluid in the detection chamber. Since the chloride ion content in the aqueous solution is different, the voltage in the water will be different. Therefore, the chloride ion content can be obtained by detecting the chloride ion potential using a potential detector.

[0025] The drilling fluid chloride ion detection device in this embodiment provides continuous, accurate, and reliable monitoring of chloride ion content, and is more environmentally friendly than chemical titration.

[0026] 2. In this embodiment, the semi-permeable membrane is a reverse osmosis membrane with a pore size in the nanometer range. The measured chloride ion content can reach 2.5 × 10^5 mg / L. This overcomes the problem of low chloride ion measurement in composite salt drilling fluids, meets the needs of field operations, and lays the foundation for effectively identifying gypsum-salt layers in the logging field, judging water invasion, ensuring safe drilling on site, and comprehensively interpreting and evaluating oil, gas, and water layers.

[0027] 3. After the drilling fluid chloride ion detection device filters the drilling fluid and measures the chloride ion content in the filtered drilling fluid, the potential detector transmits the chloride ion content information to the equipment box, which then transmits the received chloride ion content to the terminal equipment. The terminal equipment can analyze, process, store, and display the chloride ion content information. Attached Figure Description

[0028] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0029] Figure 1 This is a connection diagram of the drilling fluid chloride ion detection system;

[0030] Figure 2 This is a schematic diagram of a drilling fluid chloride ion detection device;

[0031] Figure 3 This is a schematic diagram of the testing box;

[0032] Figure 4 yes Figure 3 Front view of the detection box;

[0033] Figure 5 yes Figure 3 Side view of the testing box;

[0034] Figure 6 yes Figure 3 Top view of the detection box.

[0035] Figure label:

[0036] 100. Drilling fluid chloride ion detection device;

[0037] 11. Testing chamber; 111. Chamber body; 112. Semi-permeable membrane; 113. Filter chamber; 114. Testing chamber; 115. Mounting column; 116. Liquid inlet; 117. Drain outlet; 118. Electrode assembly;

[0038] 12. Heater; 13. Housing; 14. Thermostat; 15. Circuit board; 16. Power supply; 17. Control switch; 18. Bracket;

[0039] 200. Equipment box;

[0040] 21. Power switch; 22. Signal acquisition interface; 23. Wireless transmitter; 24. Adjustment button; 25. Indicator light; 26. Display light;

[0041] 300. Terminal equipment; 31. Wireless receiver; 32. Computer chassis; 33. Display screen;

[0042] 400. Power supply equipment; 500. Mud pit; 600. Mud pump; 700. Collection device;

[0043] 81. First connecting pipe; 82. Second connecting pipe; 83. Sewage pipe;

[0044] 91. First power supply line; 92. Second power supply line; 93. Acquisition signal line. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings.

[0046] Example 1

[0047] This utility model provides a drilling fluid chloride ion detection device 100, which includes at least one detection box 11. The detection box 11 includes a box body 111 with a accommodating cavity, a semi-permeable membrane 112 disposed in the accommodating cavity, and a potential detection device for detecting the chloride ion content in the drilling fluid.

[0048] The semi-permeable membrane 112 divides the accommodating cavity into a filtration cavity 113 and a detection cavity 114. The filtration cavity 113 is located above the detection cavity 114. The semi-permeable membrane 112 has an ion channel. The liquid inlet of the detection cavity 114 and the liquid outlet of the filtration cavity 113 are connected through the semi-permeable membrane 112.

[0049] The potential detection device includes an electrode assembly 118 and a potential detector connected thereto. The electrode assembly 118 is disposed within a detection chamber 114 and is used to generate a chloride ion potential in the drilling fluid within the detection chamber 114. Both the electrode assembly 118 and the potential detector are prior art, and this embodiment does not further limit them. Optionally, the electrode assembly 118 includes two platinum electrodes.

[0050] The filter chamber 113 has an inlet 116 and a drain 117. The drilling fluid enters the filter chamber 113 through the inlet 116 and is filtered through the semi-permeable membrane 112. After filtration, impurity particles in the drilling fluid are blocked in the filter chamber 113 and can be discharged through the drain 117. Chloride ions in the drilling fluid enter the detection chamber 114 through the ion channel from the filter chamber 113 along with the aqueous solution. When the electrode assembly 118 is energized, a chloride ion potential is generated in the drilling fluid in the detection chamber 114. Since the chloride ion content in the aqueous solution varies, the voltage in the water will vary. Therefore, the chloride ion potential can be detected by a potential detector to obtain the chloride ion content.

[0051] The drilling fluid chloride ion detection device 100 in this embodiment provides continuous, accurate, and reliable monitoring of chloride ion content, and is more environmentally friendly than chemical titration.

[0052] In this embodiment, the semi-permeable membrane is an ion-exchange membrane to allow chloride ions to pass through. The semi-permeable membrane is also a reverse osmosis membrane with a pore size in the nanometer range. The measured chloride ion content can reach 2.5 × 10^5 mg / L. This overcomes the problem of low chloride ion measurement values ​​in composite salt drilling fluids, meets the needs of field operations, and lays the foundation for effectively identifying gypsum-salt layers in the logging field, determining water intrusion, ensuring safe drilling on-site, and comprehensively interpreting and evaluating oil, gas, and water layers.

[0053] Optionally, the housing 111 is cylindrical, and the drain port 117 is positioned lower than the liquid inlet 116.

[0054] The drilling fluid chloride ion detection device 100 also includes a heater 12, which heats the drilling fluid in the filter chamber 113 to keep it in a molten state and prevent the mud-like drilling fluid in the filter chamber 113 from solidifying. Alternatively, a stirrer can be installed in the filter chamber 113 to also prevent the drilling fluid from solidifying.

[0055] In this embodiment, multiple detection boxes 11 are arranged in parallel; the drilling fluid chloride ion detection device 100 also includes a housing 13, and the heater 12 and multiple detection boxes 11 are all arranged inside the housing 13.

[0056] In this embodiment, a single heater 12 is provided, which can simultaneously heat multiple detection boxes 11 arranged in parallel. Of course, multiple heaters 12 can also be provided to heat each detection box 11 individually.

[0057] A temperature controller 14, electrically connected to the heater 12, is provided on the housing 13 to control the heating temperature of the heater 12. A circuit board 15 is provided on the housing 13, and the temperature controller 14 is electrically connected to the circuit board 15.

[0058] A power supply 16 is also provided inside the housing 13. The detection box 11, temperature controller 14, and heater 12 are all electrically connected to the power supply 16. The power supply 16 is used to supply power to the electrical components inside the housing 13.

[0059] The housing 13 is also equipped with a control switch 17, which is used to control the power supply or disconnection of electrical components.

[0060] In this embodiment, the drilling fluid chloride ion detection device 100 also includes a bracket 18 for supporting and fixing the detection box 11, and multiple detection boxes 11 are arranged at intervals on the bracket 18.

[0061] Optionally, the bottom of the housing 111 of the test box 11 is provided with a mounting post 115, and the bracket 18 is provided with a mounting hole through which the mounting post 115 passes. The test box 11 is fixedly mounted on the bracket 18 by the mounting post 115.

[0062] Example 2

[0063] This utility model provides a drilling fluid chloride ion detection system, which includes the drilling fluid chloride ion detection device 100 in Embodiment 1, and also includes an equipment box 200 and a terminal device 300.

[0064] Both the potential detector and the terminal device 300 are electrically connected to the equipment box 200. The equipment box 200 is adapted to receive chloride ion content information from the potential detector and transmit the chloride ion content information to the terminal device 300.

[0065] After the drilling fluid chloride ion detection device 100 filters the drilling fluid and measures the chloride ion content in the filtered drilling fluid, the potential detector transmits the chloride ion content information to the equipment box 200, which in turn transmits the received chloride ion content to the terminal device 300. The terminal device 300 can analyze, process, store, and display the chloride ion content information.

[0066] Specifically, the drilling fluid chloride ion detection system also includes a power supply device 400, which is electrically connected to the equipment box 200 via a first power line 91. The power supply device 400 provides power to the equipment box 200. A power switch 21 is installed on the equipment box 200 to control the on / off state of the circuit between the power supply device 400 and the equipment box 200, thereby controlling the opening or closing of the equipment box 200. An indicator light 26 is also installed on the equipment box 200 to indicate its power-on status.

[0067] The equipment box 200 is equipped with a signal acquisition interface 22, which is connected to the detection box 11 via a signal acquisition line 93. The chloride ion content information monitored by the detection box 11 can be transmitted to the equipment box 200 via the signal acquisition line 93.

[0068] In the first implementation, the device box 200 and the terminal device 300 are wirelessly connected.

[0069] Specifically, the device box 200 includes a wireless transmitter 23, and the terminal device 300 includes a wireless receiver 31. The device box 200 can transmit the received chloride ion content information to the wireless receiver 31 through the wireless transmitter 23.

[0070] The terminal device 300 also includes a computer chassis 32 and a display screen 33. The wireless receiver 31, the computer chassis 32 and the display screen 33 are connected in sequence. The wireless receiver 31 can transmit the chloride ion content information of the device box 200 to the computer chassis 32, which will analyze, process and store the information. The display screen 33 will then display the data or images for the user to view.

[0071] Optionally, the equipment box 200 is provided with an indicator light 25, which is used to display the communication status of the equipment box 200.

[0072] As another implementation, the device box 200 is wired to the terminal device 300.

[0073] Specifically, the terminal device 300 includes a computer chassis 32 and a display screen 33. The device chassis 200 and the computer chassis 32 are connected by a data transmission line. The device chassis 200 can transmit the received chloride ion content information to the computer chassis 32 through the data transmission line.

[0074] The drilling fluid chloride ion detection system in this embodiment also includes a mud tank 500 and a power lifting component.

[0075] Specifically, the mud pit 500 contains drilling fluid, and the power lifting component is connected between the mud pit 500 and the inlet 116 of the filter chamber 113 to transport the drilling fluid in the mud pit 500 to the filter chamber 113.

[0076] Optionally, the power lifting component is a mud pump 600. The mud pump 600 is connected to the equipment box 200 via a second power line 92, and the equipment box 200 is connected to the power supply equipment 400, thereby supplying power to the mud pump 600. The equipment box 200 is provided with an adjustment button 24 for controlling the forward and reverse rotation of the mud pump 600. By operating the adjustment button 24, the forward or reverse rotation of the mud pump 600 can be adjusted.

[0077] A first connecting pipe 81 is provided between the mud pump 600 and the mud tank 500. The inlet end of the first connecting pipe 81 extends into the mud tank 500, and the outlet end of the first connecting pipe 81 is connected to the inlet end of the mud pump 600. The mud pump 600 and the mud tank 500 are connected through the first connecting pipe 81.

[0078] A second connecting pipe 82 is connected between the mud pump 600 and the inlet 116 of the filter chamber 113. The inlet end of the second connecting pipe 82 is connected to the outlet end of the mud pump 600, and the outlet end of the second connecting pipe 82 is connected to the inlet 116 of the filter chamber 113. The mud pump 600 and the filter chamber 113 are connected through the second connecting pipe 82.

[0079] Under the action of the mud pump 600, the drilling fluid in the mud pool 500 enters the mud pump 600 through the first connecting pipe 81, and is discharged by the mud pump 600 and transported to the filter chamber 113 of the test box 11 through the second connecting pipe 82 for subsequent filtration and chloride ion detection.

[0080] Optionally, the drilling fluid chloride ion detection system also includes a collection device 700, which is connected to the drain port 117 of the filter chamber 113 to collect the filtered mud for subsequent treatment, thus avoiding direct discharge and environmental pollution.

[0081] The collection device 700 is connected to the drain port 117 of the filter chamber 113 via a drain pipe 83. The sludge and solid particles of the waste gas in the filter chamber 113 are discharged from the drain port 117 and discharged into the collection device 700 via the drain pipe 83.

[0082] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drilling fluid chloride detection device, characterized by, Includes at least one testing box, said testing box comprising: The enclosure has a receiving cavity; A semi-permeable membrane is disposed within a receiving cavity, dividing the cavity into a filtration cavity and a detection cavity. The filtration cavity is located above the detection cavity and has an inlet and a drain outlet. The semi-permeable membrane has ion channels and is adapted to filter impurities in the drilling fluid within the filtration cavity, allowing ions from the drilling fluid to enter the detection cavity below via the ion channels. A potential detection device includes an electrode assembly and a potential detector connected thereto. The electrode assembly is disposed within the detection chamber and is used to generate a chloride ion potential in the drilling fluid within the detection chamber.

2. The drilling fluid chloride detection apparatus of claim 1, wherein, The semi-permeable membrane is a reverse osmosis membrane.

3. The drilling fluid chloride detection apparatus of claim 1, wherein, The drain outlet is positioned lower than the liquid inlet.

4. The drilling fluid chloride detection apparatus of any one of claims 1-3, wherein, Also includes: The heater is suitable for heating the drilling fluid in the filter chamber, so that the drilling fluid in the filter chamber is kept in a molten state.

5. The drilling fluid chloride detection apparatus of claim 4, wherein, The detection boxes are multiple units connected in parallel; the drilling fluid chloride ion detection device also includes: The housing, heater, and multiple detection boxes are all housed within the housing.

6. A drilling fluid chloride detection system characterized by, The drilling fluid chloride ion detection device according to any one of claims 1-5 further includes an equipment box and terminal equipment; Both the potential detector and the terminal device are electrically connected to the device box. The device box is adapted to receive chloride ion content information from the potential detector and transmit the chloride ion content information to the terminal device.

7. The drilling fluid chloride detection system of claim 6, wherein, Also includes: Mud pit, which contains drilling fluid; A power lifting component is connected between the mud pit and the inlet of the filter chamber, and is used to transport drilling fluid from the mud pit to the filter chamber.

8. The drilling fluid chloride detection system of claim 7, wherein, The power lifting component is a mud pump.

9. The drilling fluid chloride detection system of claim 6, wherein, The device box is communicatively connected to the terminal device.

10. The drilling fluid chloride detection system of claim 9, wherein, The equipment box is equipped with indicator lights, which are used to display the communication status of the equipment box.

Images