Intelligent anti-channeling packer and its measurement and control method
Patent Information
- Application Number
- CN202211561735.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-07
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2042-12-07
AI Technical Summary
[0007]上述对比专利公开了自验封隔器的结构和验封方法,主要采用了机械结构、井口控制、验封试剂等方法,与本发明采用的智能电控结合机械结构的方法不同,未能解决我们想要解决的技术问题,为此我们发明了一种新的智能防窜封隔器及其测控方法
[0030] The intelligent anti-slip packer and its monitoring and control method in this invention can monitor the sealing status of the packer sleeve in real time, intelligently replenish or reduce the setting pressure to ensure the layered sealing effect, and compress the sleeve with minimal setting force to maximize the elasticity and function of the sleeve. This provides intelligent technical support for smooth packer unsealing and extends packer life. The advantages of this invention are: compared with traditional packers, the setting pressure of the packer cannot be automatically controlled, and it is often in a state of excessively high pressure. This causes the packer sleeve to be over-compressed and deformed, resulting in slow sleeve retraction during packer unsealing and greater difficulty in returning to its original state. This intelligent anti-slip packer can achieve adaptive pressure setting, achieving effective layered sealing with minimal hydraulic line pressure. After the packer is set, the sealing status of the packer can be monitored in real time. If there are problems such as incomplete setting of the packer sleeve, cross-contamination, or leakage, the setting pressure can be replenished automatically in a timely manner. It can also automatically release the packer based on ground commands, determine whether the packer release is complete, and feed back the current status of the packer to the ground. Therefore, this is a packer with anti-channeling and adaptive control.
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Figure CN118148616B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of oilfield development technology, and in particular to an intelligent anti-channeling packer and its measurement and control method. Background Technology
[0002] During oil extraction, there are issues such as incomplete setting of the downhole packer or prolonged stress relaxation of the packer sleeve after setting, leading to communication between the upper and lower layers of the packer sleeve and failure of the packer's setting function. On the other hand, excessive setting pressure, exceeding the setting pressure required for the packer sleeve seal, can cause severe deformation of the packer sleeve, making it difficult to release the packer.
[0003] Patent CN111042760A discloses an intelligent monitoring and control device and method for verifying the sealing effect of a downhole packer in a water injection well. The verification device includes a water injection string with a packer mounted on it. The upper end of the water injection string is connected to a wellhead tubing four-way connector. It also includes a digital pressure gauge, a flow valve, and a digital flow meter. The outlet of the digital pressure gauge is connected to the inlet of the flow valve, the outlet of the flow valve is connected to the inlet of the digital flow meter, and the outlet of the digital flow meter is connected to the wellhead tubing four-way connector. The inlet of the digital pressure gauge is connected to the outlet of the wellhead pressure stabilization system, and the outlet of the wellhead pressure stabilization system is connected to a water pipe. It also includes a wireless data transceiver, which is wirelessly connected to the digital flow meter and the digital pressure gauge. This invention allows for the determination of the packer sealing effect in an intelligent monitoring and control water injection well based on changes in wellhead flow rate at the surface, providing a verification method for the construction of wireless intelligent monitoring and control sub-injection process tubing strings.
[0004] Patent CN102507096B discloses a packer sealing verification method and a verification device used in the method. The verification device includes a hollow tube with an inner hole for communicating with the lumen of a corresponding oil pipe. The outer periphery of the hollow tube has a storage cavity for storing verification reagents. The cavity wall of the storage cavity has a reagent outflow channel for the verification reagents to flow into the sealing space formed by the packer to be verified. The verification device also includes a switching mechanism for controlling the opening and closing of the reagent outflow channel. This invention can accurately determine the sealing effect of the packer to be verified.
[0005] Patent CN104975820B discloses a self-testing sealing packer, belonging to the field of downhole tools for oil and gas well operations. This packer consists of an inner central tube, an outer central tube, slips, and a slip sheath. One end of the inner central tube is threaded with an upper connector, and the other end is threaded with a lower connector. An inner piston sleeve, a release claw, and an outer central tube are sequentially installed on the inner central tube between the upper and lower connectors. A balance connector is threaded onto one end of the inner piston sleeve, and an upper bushing and a lower bushing are sequentially installed on the inner piston sleeve at the other end of the balance connector. A bypass connector is provided between the upper and lower bushings. An upper guide ring is installed on the upper bushing on one side of the bypass connector. This packer uses a double-set rubber sleeve seal during setting, ensuring safer and more reliable sealing performance during setting. It is simple and quick to operate, meeting the needs of sealing and separating oil layer casing in oilfield production.
[0006] Patent CN104295261B discloses a self-testing packer, which can be used as a screen pipe hanger or for plugging bottom water in the sealing-up process of stratified mining. The self-testing packer has a test hole on the side wall of the upper central tube; a test piston is installed inside the upper central tube via a test shear pin to close the test hole; a test ring is provided between adjacent rubber tubes, and the test ring has multiple radial fluid through holes around its circumference. The side wall of the rubber tube core has a second through hole that can communicate with the radial fluid through holes after the rubber tube is compressed. After setting, the test shear pin is sheared by liquid pressure, and the pressurized liquid enters the gap between the two adjacent rubber tubes through the liquid channel to check whether the setting is complete. In addition, the self-testing packer also has an anti-drop-off mechanism and an elastic release mechanism. The anti-drop-off mechanism includes an upper connector and a limiting claw spring, and the elastic release mechanism includes a lower central tube and a release nut.
[0007] The aforementioned comparative patents disclose the structure and sealing method of the self-testing packer, which mainly adopts mechanical structure, wellhead control, and sealing reagents. These methods differ from the intelligent electronic control combined with mechanical structure method used in this invention and fail to solve the technical problem we want to solve. Therefore, we have invented a new intelligent anti-channeling packer and its measurement and control method. Summary of the Invention
[0008] The purpose of this invention is to provide an intelligent anti-slip packer and its measurement and control method that can monitor the sealing status of the packer cartridge in real time, ensure the layered sealing effect, compress the cartridge with minimal setting force, and maximize the elasticity and function of the cartridge.
[0009] The objective of this invention can be achieved through the following technical measures: an intelligent anti-surge packer and its measurement and control method. The intelligent anti-surge packer includes a main control module, an oil chamber, a pressurizing mechanism, a pressure relief mechanism, and a hydraulically controlled packer. The main control module is connected to the pressurizing mechanism and the pressure relief mechanism via cables. The oil chamber is connected to the pressurizing mechanism and the pressure relief mechanism respectively via hydraulic control lines. The pressurizing mechanism and the pressure relief mechanism are both connected to the hydraulically controlled packer via hydraulic control lines. During setting, the main control module transmits a setting signal to the pressurizing mechanism, and the pressurizing mechanism pressurizes the hydraulic packer to its rated setting pressure. During unsealing, the main control module transmits an unsealing signal to the pressure relief mechanism, and the pressure relief mechanism releases the hydraulic pressure inside the hydraulically controlled packer.
[0010] The objective of this invention can also be achieved through the following technical measures:
[0011] During setting, the hydraulic oil in the oil chamber flows from the oil chamber to the pressurizing mechanism and then into the hydraulically controlled packer; during unsealing, the hydraulic oil flows from the hydraulically controlled packer along the hydraulically controlled pipeline to the pressure relief mechanism and then flows back to the oil chamber.
[0012] The hydraulically controlled packer includes a second pressure sensor, a third pressure sensor, and a rubber sleeve. The second pressure sensor is located above the rubber sleeve, collecting pressure data P2 above the rubber sleeve and transmitting it to the main control module. The third pressure sensor is located below the rubber sleeve, collecting pressure data P3 below the rubber sleeve and transmitting it to the main control module. During setting, the main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it indicates that packer slippage exists. The main control module controls the pressurization mechanism to increase the pressure ΔPs, and the hydraulically controlled packer is further set.
[0013] During the unsealing process, the rubber sleeve retracts, and the main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it indicates that the hydraulic packer has been unsealed.
[0014] The hydraulically controlled packer also includes a flow meter, which collects the flow data Q1 from the outside of the hydraulically controlled packer and transmits it to the main control module. During the setting process, the main control module determines whether the value of Q1 is zero. If it is not zero, it indicates that there is packer leakage. The main control module controls the pressurization mechanism to increase the pressure by ΔPs, and the hydraulically controlled packer is further set.
[0015] During the unsealing process, the packer retracts, and the main control module checks if the Q1 value is zero. If it is not zero, it means that the packer has been unsealed.
[0016] The intelligent anti-surge packer also includes a first pressure sensor, which is connected to the pressurizing mechanism and the main control module. The first pressure sensor collects the pressure value of the pressurizing mechanism and transmits it to the main control module. When the pressure value collected by the first pressure sensor is the rated setting pressure of the hydraulic packer, the main control module controls the pressurizing mechanism to stop pressurizing.
[0017] The objective of this invention can also be achieved through the following technical measures: a method for measuring and controlling an intelligent anti-slip packer, which employs an intelligent anti-slip packer and includes:
[0018] Step 1: The main control module receives control commands. When the command is a sealing command, the process proceeds to Step 2. When the command is a desealing command, the process proceeds to Step 5.
[0019] Step 2: The pressurization mechanism pressurizes the hydraulic packer to its rated setting pressure Ps;
[0020] Step 3: The main control module determines whether there is packer misalignment;
[0021] Step 4: When packer misalignment occurs, the pressurization mechanism increases the pressure by ΔPs, and the hydraulic packer is further set; return to the state of waiting to receive control commands in Step 1.
[0022] Step 5, the pressure relief mechanism's pressure relief duration T1;
[0023] Step 6: The main control module determines whether the unblocking was successful.
[0024] The objective of this invention can also be achieved through the following technical measures:
[0025] In step 3, the main control module reads the pressure data P2 transmitted from the second pressure sensor and the pressure data P3 transmitted from the third pressure sensor. The main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it means that there is hydraulic packer malfunction. If it is not zero, the hydraulic packer is successfully set.
[0026] In step 3, the main control module reads the flow value Q1 transmitted from the flow meter. If Q1 is not zero, it indicates that there is packer malfunction. If it is zero, the hydraulic packer is successfully set.
[0027] In step 6, the main control module reads the pressure data P2 transmitted from the second pressure sensor and the pressure data P3 transmitted from the third pressure sensor. The main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it means that the hydraulic packer has been successfully unsealed.
[0028] In step 6, the main control module reads the flow value Q1 transmitted from the flow meter. If Q1 is not zero, the hydraulic packer is successfully desealed.
[0029] The intelligent anti-smuggling packer monitoring and control method also includes, after step 6, unsealing is completed, the process returns to step 1, and waits to receive control commands.
[0030] The intelligent anti-slip packer and its monitoring and control method in this invention can monitor the sealing status of the packer sleeve in real time, intelligently replenish or reduce the setting pressure to ensure the layered sealing effect, and compress the sleeve with minimal setting force to maximize the elasticity and function of the sleeve. This provides intelligent technical support for smooth packer unsealing and extends packer life. The advantages of this invention are: compared with traditional packers, the setting pressure of the packer cannot be automatically controlled, and it is often in a state of excessively high pressure. This causes the packer sleeve to be over-compressed and deformed, resulting in slow sleeve retraction during packer unsealing and greater difficulty in returning to its original state. This intelligent anti-slip packer can achieve adaptive pressure setting, achieving effective layered sealing with minimal hydraulic line pressure. After the packer is set, the sealing status of the packer can be monitored in real time. If there are problems such as incomplete setting of the packer sleeve, cross-contamination, or leakage, the setting pressure can be replenished automatically in a timely manner. It can also automatically release the packer based on ground commands, determine whether the packer release is complete, and feed back the current status of the packer to the ground. Therefore, this is a packer with anti-channeling and adaptive control. Attached Figure Description
[0031] Figure 1 This is a structural diagram of a specific embodiment of the intelligent anti-channeling barrier of the present invention;
[0032] Figure 2 This is a flowchart of a specific embodiment of the intelligent anti-channeling packer measurement and control method of the present invention. Detailed Implementation
[0033] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, and / or combinations thereof.
[0035] like Figure 1As shown, the intelligent anti-channeling packer of the present invention comprises a main control module 1, an oil chamber 2, a pressurizing mechanism 3, a pressure relief mechanism 4, a first pressure sensor 5, and a hydraulically controlled packer 9. The hydraulically controlled packer further includes a second pressure sensor 6, a third pressure sensor 8, a flow meter 10, and a rubber sleeve 7. The connections of each part are as follows: the main control module 1 is connected to the pressurizing mechanism 3, the pressure relief mechanism 4, the first pressure sensor 5, the second pressure sensor 6, the third pressure sensor 8, and the flow meter 10 via electrical wires. The oil chamber 2 is connected to the pressurizing mechanism 3 and the pressure relief mechanism 4 via hydraulically controlled pipelines. The pressurizing mechanism 3 and the pressure relief mechanism 4 are connected to the hydraulically controlled packer 9 via hydraulically controlled pipelines.
[0036] The working principle of this intelligent packer is as follows: It employs an electronically controlled structure to intelligently control the hydraulic oil pressure, and uses a first pressure sensor 5 to monitor the pressure in the hydraulic oil chamber in real time, enabling the packer sleeve to be set with minimal setting pressure. Two pressure sensors and a flow meter are installed above and below the packer sleeve, respectively, to monitor for leaks in real time. When the packer needs to be released, a pressure relief mechanism releases the hydraulic pressure inside the packer, causing the packer sleeve to retract. The release is then determined by combining the readings from the second pressure sensor (P2), the third pressure sensor (P3), and the flow meter (Q1).
[0037] like Figure 2 As shown, the measurement and control method of the intelligent anti-smuggling barrier is as follows:
[0038] 1. Receive control commands
[0039] 2. Determine the command type. If it is a sealing command, proceed to step 3; if it is a sealing command, proceed to step 7.
[0040] 3. The pressurization mechanism pressurizes the pressure to the designed setting pressure Ps of the hydraulic packer;
[0041] 4. Read the values P2 from the second pressure sensor, P3 from the third pressure sensor, and Q1 from the flow meter;
[0042] 5. Determine the pressure difference ΔP = P2 - P3 and the flow meter value Q1. If ΔP = 0 or Q1 ≠ 0, the packer is faulty and proceed to step 6; otherwise, the packer is successfully set and enters the self-test sealing state.
[0043] 6. The pressurization mechanism increases the pressure ΔPs, further setting the packer. (ΔPs is also a preset value. Typically, ΔPs = ΔPs / n, where n is a positive integer.)
[0044] 7. The duration of pressure relief by the pressure relief mechanism is T1;
[0045] 8. Read the values P2 from the second pressure sensor, P3 from the third pressure sensor, and Q1 from the flow meter;
[0046] 9. Determine the pressure difference ΔP = P2 - P3 and the flow meter value Q1. If ΔP = 0 or Q1 ≠ 0, the packer is unsealed and proceed to step 10.
[0047] 10. Lockdown complete;
[0048] The following are several specific embodiments of the application of the present invention.
[0049] Example 1
[0050] In a specific embodiment 1 of the present invention, the intelligent anti-channeling packer consists of a main control module, an oil chamber, a pressurization mechanism, a pressure relief mechanism, a first pressure sensor, and a hydraulically controlled packer.
[0051] The hydraulically controlled packer also includes a second pressure sensor, a third pressure sensor, a rubber sleeve, and mechanical components for setting and releasing the packer. The connections are as follows: the main control unit is connected to the pressurization mechanism, the pressure relief mechanism, the first pressure sensor, the second pressure sensor, and the third pressure sensor via wires. The oil chamber is connected to the pressurization mechanism and the pressure relief mechanism via hydraulic control lines. The pressurization mechanism and the pressure relief mechanism are connected to the hydraulically controlled packer via hydraulic control lines.
[0052] During setting, the hydraulic oil in the oil chamber flows from the oil chamber to the pressurizing mechanism and then into the hydraulically controlled packer; during unsealing, the hydraulic oil flows from the hydraulically controlled packer along the hydraulically controlled pipeline to the pressure relief mechanism and then flows back to the oil chamber.
[0053] The second pressure sensor is located above the rubber cylinder, collecting pressure data P2 above the rubber cylinder and transmitting it to the main control module. The third pressure sensor is located below the rubber cylinder, collecting pressure data P3 below the rubber cylinder and transmitting it to the main control module. During setting, the main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it indicates that there is packer slippage. The main control module controls the pressurization mechanism to increase the pressure ΔPs, and the hydraulic packer is further set.
[0054] During the unsealing process, the rubber sleeve retracts, and the main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it indicates that the hydraulic packer has been unsealed.
[0055] The hydraulically controlled packer also includes a flow meter, which collects the flow data Q1 from the outside of the hydraulically controlled packer and transmits it to the main control module. During the setting process, the main control module determines whether the value of Q1 is zero. If it is not zero, it indicates that there is packer leakage. The main control module controls the pressurization mechanism to increase the pressure by ΔPs, and the hydraulically controlled packer is further set.
[0056] During the unsealing process, the packer retracts, and the main control module checks if the Q1 value is zero. If it is not zero, it means that the packer has been unsealed.
[0057] The first pressure sensor is connected to the pressurizing mechanism and the main control module. It collects the pressure value of the pressurizing mechanism and transmits it to the main control module. When the pressure value collected by the first pressure sensor is the rated setting pressure of the hydraulic packer, the main control module controls the pressurizing mechanism to stop pressurizing.
[0058] Example 2
[0059] In a specific embodiment 2 of the present invention, the intelligent anti-smuggling packer is composed of a main control module, an oil chamber, a pressurization mechanism, a pressure relief mechanism, a first pressure sensor, and a mechanical setting and unsealing mechanism.
[0060] The mechanical setting and unsetting mechanism also includes a flow meter, a rubber sleeve, and mechanical components for setting and unsetting. The connections between the parts are as follows: The main control unit is connected to the pressurization mechanism, the pressure relief mechanism, the first pressure sensor, and the flow meter via electrical wires. The oil chamber is connected to the pressurization mechanism and the pressure relief mechanism via hydraulic control lines. The pressurization mechanism and the pressure relief mechanism are connected to the hydraulically controlled packer via hydraulic control lines.
[0061] That is, the second pressure sensor and the third pressure sensor, or the flow meter, can be used interchangeably.
[0062] Example 3
[0063] In a specific embodiment 3 of the present invention, the measurement and control method of the intelligent anti-smuggling barrier of the present invention includes:
[0064] 1. Receive control commands
[0065] 2. Determine the command type. If it is a sealing command, proceed to step 3; if it is a sealing command, proceed to step 7.
[0066] 3. Increase the pressure of the mechanism until the pressure value P1 displayed by the first pressure sensor is the packer design pressure Ps=30Mpa;
[0067] 4. Read the value P2 from the second pressure sensor, the value P3 from the third pressure sensor, and the value Q1 from the flow meter;
[0068] 5. Determine the pressure difference ΔP = P2 - P3 and the flow meter value Q1. If ΔP = 0 or Q1 ≠ 0, the packer is faulty and proceed to step 6; otherwise, the packer is successfully set and enters the self-test sealing state.
[0069] 6. The pressurization mechanism increases the pressure by ΔPs=5Mpa, and the packer is further set.
[0070] 7. The pressure relief mechanism's pressure relief duration T1 = 15 min;
[0071] 8. Read the value P2 from the second pressure sensor, the value P3 from the third pressure sensor, and the value Q1 from the flow meter;
[0072] 9. Determine the pressure difference ΔP = P2 - P3 and the flow meter value Q1. If ΔP = 0 or Q1 ≠ 0, then the packer is released and proceed to step 10.
[0073] 10. The unsealing process is complete; return to the wellhead status.
[0074] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0075] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.
Claims
1. An intelligent anti-channeling packer, characterized in that, The intelligent anti-surge packer includes a main control module, an oil chamber, a pressurizing mechanism, a pressure relief mechanism, and a hydraulically controlled packer. The main control module is connected to the pressurizing mechanism and the pressure relief mechanism via cables. The oil chamber is connected to the pressurizing mechanism and the pressure relief mechanism via hydraulic control lines. The pressurizing mechanism and the pressure relief mechanism are both connected to the hydraulically controlled packer via hydraulic control lines. During setting, the main control module transmits a setting signal to the pressurizing mechanism, which then pressurizes the packer to its rated setting pressure. During desealing, the main control module transmits a desealing signal to the pressure relief mechanism, which then releases the hydraulic pressure inside the hydraulically controlled packer. The hydraulically controlled packer includes a second pressure sensor, a third pressure sensor, and a rubber sleeve. The second pressure sensor is located above the rubber sleeve, collects pressure data P2 above the rubber sleeve, and transmits it to the main control module. The third pressure sensor is located below the rubber sleeve, collects pressure data P3 below the rubber sleeve, and transmits it to the main control module. During setting, the main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it indicates that there is packer slippage. The main control module controls the pressurization mechanism to increase the pressure ΔPs, and the hydraulically controlled packer sets further. During the unsealing process, the rubber sleeve retracts, and the main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it means that the hydraulic packer has been unsealed. The intelligent anti-surge packer also includes a first pressure sensor, which is connected to the pressurizing mechanism and the main control module. The first pressure sensor collects the pressure value of the pressurizing mechanism and transmits it to the main control module. When the pressure value collected by the first pressure sensor is the rated setting pressure of the hydraulic packer, the main control module controls the pressurizing mechanism to stop pressurizing.
2. The intelligent anti-channeling barrier according to claim 1, characterized in that, During setting, the hydraulic oil in the oil chamber flows from the oil chamber to the pressurizing mechanism and then into the hydraulically controlled packer; during unsealing, the hydraulic oil flows from the hydraulically controlled packer along the hydraulically controlled pipeline to the pressure relief mechanism and then flows back to the oil chamber.
3. The intelligent anti-channeling barrier according to claim 1, characterized in that, The hydraulically controlled packer also includes a flow meter, which collects the flow data Q1 from the outside of the hydraulically controlled packer and transmits it to the main control module. During the setting process, the main control module determines whether the value of Q1 is zero. If it is not zero, it indicates that there is packer leakage. The main control module controls the pressurization mechanism to increase the pressure by ΔPs, and the hydraulically controlled packer is further set.
4. The intelligent anti-channeling barrier according to claim 3, characterized in that, During the unsealing process, the packer retracts, and the main control module checks if the Q1 value is zero. If it is not zero, it means that the packer has been unsealed.
5. A method for measuring and controlling an intelligent anti-channeling packer, characterized in that, The intelligent anti-slip packer monitoring and control method uses the intelligent anti-slip packer as described in claim 1, including: Step 1: The main control module receives control commands. When the command is a sealing command, the process proceeds to Step 2. When the command is a desealing command, the process proceeds to Step 5. Step 2: The pressurization mechanism pressurizes the hydraulic packer to its rated setting pressure Ps; Step 3: The main control module determines whether there is packer misalignment; Step 4: When packer misalignment occurs, the pressurization mechanism increases the pressure by ΔPs, and the hydraulic packer is further set; return to the state of waiting to receive control commands in Step 1. Step 5, the pressure relief mechanism's pressure relief duration T1; Step 6: The main control module determines whether the unblocking was successful.
6. The intelligent anti-channeling packer measurement and control method according to claim 5, characterized in that, In step 3, the main control module reads the pressure data P2 transmitted from the second pressure sensor and the pressure data P3 transmitted from the third pressure sensor. The main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it means that there is hydraulic packer malfunction. If it is not zero, the hydraulic packer is successfully set.
7. The intelligent anti-channeling packer measurement and control method according to claim 5, characterized in that, In step 3, the main control module reads the flow value Q1 transmitted from the flow meter. If Q1 is not zero, it indicates that there is packer malfunction. If it is zero, the hydraulic packer is successfully set.
8. The intelligent anti-channeling packer measurement and control method according to claim 5, characterized in that, In step 6, the main control module reads the pressure data P2 transmitted from the second pressure sensor and the pressure data P3 transmitted from the third pressure sensor. The main control module determines whether the pressure difference ΔP = P2 - P3 is zero. If it is zero, it means that the hydraulic packer has been successfully unsealed.
9. The intelligent anti-channeling packer measurement and control method according to claim 5, characterized in that, In step 6, the main control module reads the flow value Q1 transmitted from the flow meter. If Q1 is not zero, the hydraulic packer is successfully desealed.
10. The intelligent anti-channeling packer measurement and control method according to claim 5, characterized in that, The intelligent anti-smuggling packer monitoring and control method also includes, after step 6, unsealing is completed, the process returns to step 1, and waits to receive control commands.
Citation Information
Patent Citations
Seal examining method of packer and seal examining device used in method
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