Soluble bridge plug and oil well parameter acquisition method

Abstract

The invention discloses a soluble bridge plug and an oil well parameter obtaining method. The soluble bridge plug comprises a soluble bridge plug body, a plurality of soluble shell microchip capsules and a plugging device. The soluble bridge plug body is provided with a first through hole through which the soluble shell microchip capsule can pass; the plurality of soluble shell microchip capsules are arranged at a first position and a second position in the first through hole; the soluble shell microchip capsule comprises a soluble shell and a microchip capsule body arranged in the soluble shell, and the microchip capsule body comprises a micro-control unit, a temperature sensor and a pressure sensor, wherein the temperature sensor and the pressure sensor are connected with the micro-control unit; the temperature sensor is used for measuring the temperature in the oil well plugging process; the pressure sensor is used for measuring the pressure in the oil well plugging process; the micro-control unit is used for storing temperature data measured by the temperature sensor and pressure data measured by the pressure sensor; the plugging device is used for plugging the first through hole of the soluble bridge plug body in the process that the soluble bridge plug body plugs an oil well.

Description

Technical Field

[0001] This application relates to the technical field of petroleum engineering, and particularly to a soluble bridge plug and a method for obtaining oil well parameters. Background Art

[0002] In the field of oil and gas development, in unconventional well completion processes, soluble bridge plugs are often used to perform segmented hydraulic fracturing on formations. The horizontal well segmented fracturing technology has become an important means for reservoir stimulation and effectively increasing the production of individual wells. Soluble bridge plugs are important tools for plugging oil wells during segmented fracturing. The advantage of soluble bridge plugs is that they can dissolve themselves under the conditions in the oil well, thus reducing or eliminating the plug removal operation after the fracturing operation, and reducing the overall cost and operation risk.

[0003] Currently, in order to measure the plugging effect of soluble bridge plugs in oil wells, the technology of real-time fiber optic detection downhole is usually used to measure the dynamic environmental temperature downhole during the fracturing of soluble bridge plugs, and then the measured dynamic environmental temperature is used to evaluate the plugging effect of soluble bridge plugs in the well. However, this detection method has high costs and complex operations. Summary of the Invention

[0004] In view of this, embodiments of this application provide a soluble bridge plug and a method for obtaining oil well parameters.

[0005] According to the first aspect of this application, embodiments of this application provide a soluble bridge plug, including:

[0006] A soluble bridge plug body, a plurality of soluble outer shell microchip capsules, and a plugging device;

[0007] The soluble bridge plug body has a first through hole that can pass through the soluble outer shell microchip capsules, and the soluble bridge plug body is used to plug the oil well;

[0008] A plurality of soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole, and the first position is a position close to the first end of the first through hole;

[0009] The soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged inside the soluble outer shell. The microchip capsule includes a micro control unit, a temperature sensor connected to the micro control unit, and a pressure sensor; the temperature sensor is used to measure the temperature during the plugging process of the oil well; the pressure sensor is used to measure the pressure during the plugging process of the oil well; the micro control unit is used to store the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor;

[0010] The plugging device is used to plug the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well.

[0011] Optionally, the soluble outer shell includes a first soluble outer shell and a second soluble outer shell, and the first soluble outer shell and the second soluble outer shell are connected by threads to form the soluble outer shell.

[0012] Optionally, both the first soluble outer shell and the second soluble outer shell are provided with a plurality of second through holes penetrating the inner wall and the outer wall.

[0013] Optionally, the microchip capsule further includes:

[0014] A capsule housing; a micro control unit, a temperature sensor, and a pressure sensor are arranged inside the capsule housing.

[0015] Optionally, the microchip capsule further includes:

[0016] A signal receiving module and a signal sending module connected to the micro control unit;

[0017] The signal receiving module is configured to receive the acquisition instructions of temperature and pressure from the outside and send them to the micro control unit;

[0018] The signal sending module is configured to send out the temperature data and pressure data stored in the micro control unit.

[0019] Optionally, the microchip capsule further includes: a power module for supplying power to the micro control unit; an indicator light for indicating the state of the microchip capsule.

[0020] According to a second aspect of the present application, an oil well parameter acquisition method provided by an embodiment of the present application includes:

[0021] Put a soluble bridge plug into the oil wellhead and place the soluble bridge plug at a specified position in the oil well; wherein, the soluble bridge plug includes a soluble bridge plug body, a plurality of soluble outer shell microchip capsules, and a plugging device; the soluble bridge plug body has a first through hole capable of passing through the soluble outer shell microchip capsule, and the soluble bridge plug body is used for plugging the oil well; the plurality of soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole; the soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged inside the soluble outer shell, and the microchip capsule includes a micro control unit, a temperature sensor, and a pressure sensor connected to the micro control unit; the temperature sensor is used for measuring the temperature during the plugging process of the oil well; the pressure sensor is used for measuring the pressure during the plugging process of the oil well; the micro control unit is used for storing the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor; when the soluble bridge plug enters the oil well, the temperature sensor and the pressure sensor are in a working state; the plugging device is used for plugging the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well.

[0022] Inject fracturing fluid through the wellhead to perform a fracturing operation on the soluble bridge plug; wherein, the soluble bridge plug body and the soluble outer shell of the soluble outer shell microchip capsule dissolve during the fracturing operation;

[0023] Obtain the microchip capsule through the wellhead to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing process of the soluble bridge plug.

[0024] Optionally, place the soluble bridge plug through the wellhead and position the soluble bridge plug at a specified position in the oil well, including:

[0025] Place the soluble bridge plug body through the wellhead and position the soluble bridge plug body at a specified position in the oil well;

[0026] Place a plurality of soluble outer shell microchip capsules through the wellhead and position the plurality of soluble outer shell microchip capsules at the first position and the second position in the first through hole of the soluble bridge plug body;

[0027] Place a plugging device through the wellhead to plug the first through hole of the soluble bridge plug body.

[0028] Optionally, the method for obtaining oil well parameters further includes:

[0029] Evaluate the plugging effect of the soluble bridge plug based on the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing process of the soluble bridge plug.

[0030] Optionally, the microchip capsule further includes: a signal receiving module and a signal sending module connected to the micro control unit;

[0031] Obtain the microchip capsule through the wellhead to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing process of the soluble bridge plug, including:

[0032] Send a temperature and pressure acquisition instruction to the signal receiving module of the microchip capsule, so that the micro control unit, based on the acquisition instruction, sends out the temperature data and pressure data stored at the first position and the second position through the signal sending module to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing process of the soluble bridge plug.

[0033] The soluble bridge plug and the method for obtaining oil well parameters provided by the embodiments of the present application are configured by setting a soluble bridge plug body, a plurality of soluble outer shell microchip capsules, and a plugging device. The soluble bridge plug body has a first through hole that can pass through the soluble outer shell microchip capsules, and the soluble bridge plug body is used to plug the oil well. The plurality of soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole. The soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged inside the soluble outer shell. The microchip capsule includes a micro control unit, a temperature sensor connected to the micro control unit, and a pressure sensor. The temperature sensor is used to measure the temperature during the plugging process of the oil well. The pressure sensor is used to measure the pressure during the plugging process of the oil well. The micro control unit is used to store the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor. The plugging device is used to plug the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well. In this way, the microchip capsule can collect and record the temperature data and pressure data during the plugging and fracturing processes of the oil well in real time. After the soluble bridge plug body dissolves and the microchip capsule flows out of the oil wellhead with the fracturing fluid and is recovered, the temperature data and pressure data during the plugging and fracturing processes of the oil well can be obtained from the microchip capsule, so that the plugging effect of the soluble bridge plug can be evaluated, and the plugging and fracturing processes can be optimized, which has important value for studying the plugging technology under relevant geological environments and well conditions.

[0034] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of a soluble bridge plug in an embodiment of the present application;

[0036] Figure 2 It is a schematic structural diagram of a soluble outer shell microchip capsule in an embodiment of the present application;

[0037] Figure 3 It is a schematic structural diagram of a microchip capsule in an embodiment of the present application;

[0038] Figure 4 It is a schematic structural diagram of another soluble outer shell microchip capsule in an embodiment of the present application;

[0039] Figure 5 It is a schematic structural diagram of another microchip capsule in an embodiment of the present application;

[0040] Figure 6 It is a schematic flow diagram of the method for obtaining oil well parameters in an embodiment of the present application;

[0041] Figure 7 Schematic diagram of the process of placing the soluble bridge plug body at a specified position in an oil well in an embodiment of the present application;

[0042] Figure 8 Schematic diagram of the process of placing the microchip capsule in an oil well in an embodiment of the present application;

[0043] Figure 9 Schematic diagram of the process of placing the plugging device in an oil well and performing a fracturing operation in an embodiment of the present application;

[0044] Figure 10 Schematic diagram of the process of recovering the microchip capsule in an embodiment of the present application. Detailed implementation manners

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0046] An embodiment of the present application provides a soluble bridge plug, as Figure 1 shown, including:

[0047] A soluble bridge plug body 11, a plurality of soluble outer shell microchip capsules 12, and a plugging device 13. The soluble bridge plug body 11 has a first through hole capable of passing through the soluble outer shell microchip capsules 12, and the soluble bridge plug body 11 is used to plug the oil well. The plurality of soluble outer shell microchip capsules 12 are arranged at a first position and a second position in the first through hole; the plugging device 13 is used to plug the first through hole of the soluble bridge plug body 11 during the process of the soluble bridge plug body 11 plugging the oil well.

[0048] The soluble outer shell microchip capsule 12 is as Figure 2 shown, including a soluble outer shell 21 and a microchip capsule 22 arranged inside the soluble outer shell. The microchip capsule 22 is as Figure 3 shown, including a micro control unit 223, and a temperature sensor 221 and a pressure sensor 222 connected to the micro control unit 223; the temperature sensor 221 is used to measure the temperature during the process of plugging the oil well; the pressure sensor 222 is used to measure the pressure during the process of plugging the oil well; the micro control unit 223 is used to store the temperature data measured by the temperature sensor 221 and the pressure data measured by the pressure sensor 222.

[0049] In this embodiment, the temperature sensor is a non-contact temperature sensor, such as an infrared sensor and a microwave sensor.

[0050] In this embodiment, the first position may be a position close to the first end of the first through hole, and the second position may be a position close to the second end of the first through hole.

[0051] In this embodiment, the plugging device 13 may be a soluble bridge plugging ball.

[0052] In this embodiment, the soluble bridge plug body 11 and the plugging device 13 are made of materials with soluble properties. Soluble materials with different dissolution times and dissolution environments can be selected according to actual needs. For example, the material of the soluble bridge plug body 11 is any one or a combination of several of metal aluminum, functional alloy, strengthened alloy, polyglycolide material, etc.; the material of the plugging device 13 is any one or a combination of several of metal aluminum, functional alloy, strengthened alloy, polyglycolide material, etc.

[0053] In some embodiments, as Figure 4 shown, the soluble housing 21 includes a first soluble housing 211 and a second soluble housing 212. The first soluble housing 211 and the second soluble housing 212 are connected by threads to form the soluble housing 21. In this way, the microchip capsule 22 can be more conveniently placed into the soluble housing 21.

[0054] In some embodiments, as Figure 4 shown, both the first soluble housing 211 and the second soluble housing 212 have a plurality of second through holes penetrating the inner wall and the outer wall. In this way, it is convenient for the fluid in the oil well to contact the microchip capsule 22 through the second through holes, improving the accuracy rate when the temperature sensor and the pressure sensor in the microchip capsule perform temperature measurement and pressure measurement.

[0055] In this embodiment, the soluble housing 21 is made of materials with soluble properties. Soluble materials with different dissolution times and dissolution environments can be selected according to actual needs. For example, the material of the soluble housing 21 is any one or a combination of several of metal aluminum, functional alloy, strengthened alloy, polyglycolide material, etc.;

[0056] In this embodiment, by providing the soluble housing 21 outside the microchip capsule 22, the soluble housing 21 can protect the microchip capsule 22 and prevent the microchip capsule 22 from being damaged during the process of being placed into the oil well.

[0057] In some embodiments, the micro control unit 223 is further configured to provide power to the temperature sensor 221 and the pressure sensor 222.

[0058] In some embodiments, as Figure 3 shown, the microchip capsule 22 further includes a power module 224, and the power module 224 is configured to provide power to the micro control unit 223.

[0059] In this embodiment, the power module 224 may be a high-temperature battery.

[0060] In this embodiment, as Figure 3 shown, the microchip capsule 22 may further include a wireless charging module 225. The wireless charging module 225 is used to charge the power module 224.

[0061] In this embodiment, the microcontroller unit (MCU) 223 has a data storage module, and the data storage module is used to store the temperature data measured by the temperature sensor 221 and the pressure data measured by the pressure sensor 222. The data storage module can be a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device or a magnetic storage device, or any suitable combination of the above.

[0062] In some embodiments, the microchip capsule as Figure 3 shown, further includes a capsule housing 230. The microcontroller unit 223, the temperature sensor 221, the pressure sensor 222 and the power module 224 are arranged inside the capsule housing.

[0063] Specifically, the capsule housing 230 is made of a resin material that is resistant to high temperature, high pressure and corrosion, and can adapt to the harsh environment of the oil well, avoiding damage to the microcontroller unit 223 inside the capsule housing, as well as the temperature sensor 221, the pressure sensor 222 and the power module 224 connected to the microcontroller unit 223 due to damage to the capsule housing. In some embodiments, as Figure 5 shown, the microchip capsule 22 includes a microcontroller unit 223, and a temperature sensor 221, a pressure sensor 222 and a power module 224 connected to the microcontroller unit 223; and a wireless charging module 225. The microchip capsule further includes: a signal receiving module 226 and a signal sending module 228 connected to the microcontroller unit 223.

[0064] The signal receiving module 226 is used to receive the acquisition instructions of temperature and pressure from the outside and send them to the microcontroller unit 223; the signal sending module 227 is used to send out the temperature data and pressure data stored by the microcontroller unit 223.

[0065] During specific implementation, as Figure 5 shown, the signal receiving module 226 can be an infrared receiving module. The signal sending module 227 can be an infrared transmitting module.

[0066] Specifically, when it is necessary to read the temperature data and pressure data stored in the microcontroller unit 223, acquisition instructions for temperature and pressure can be sent to the signal receiving module 226. The signal receiving module 226 sends the acquisition instructions for temperature and pressure to the microcontroller unit 223. Based on the acquisition instructions, the microcontroller unit 223 sends the stored temperature data and pressure data to the signal sending module 227, and the signal sending module 227 sends the received temperature data and pressure data. In this way, the temperature data and pressure data stored in the microchip capsule can be read wirelessly.

[0067] In some embodiments, as Figure 5 shown, the microchip capsule further includes: an indicator light 229 for indicating the state of the microchip capsule. Specifically, the indicator light 229 can indicate the state of the microcontroller unit 223.

[0068] In this embodiment, a plurality of soluble shell microchip capsules 12 are arranged at the first position and the second position in the first through hole. The first position is the position close to the first end of the first through hole, and the second position is the position close to the second end of the first through hole. Temperature data and pressure data at the first end and the second end of the soluble plug body during the oil well plugging and fracturing processes can be collected; thus, the temperature data and pressure data at the upper and lower ends of the soluble plug body during the oil well plugging and fracturing processes can be collected and stored, so that the plugging effect of the plug and the downhole environment state can be evaluated more accurately.

[0069] In this embodiment, before the soluble plug is placed in the oil well, the temperature sensor and pressure sensor in the microchip capsule can be started, so that the microchip capsule can measure the temperature and pressure of the oil well during the whole process of the soluble plug plugging. The measured temperature data and pressure data are stored in the microcontroller unit of the microchip capsule. After the soluble plug and the soluble shell are dissolved, the microchip capsule flows out of the wellhead with the fluid and is recovered; the temperature data and pressure data in the microchip capsule can be downloaded to an electronic device for analysis.

[0070] The soluble bridge plug provided by the embodiment of the present application is provided with a soluble bridge plug body, a plurality of soluble outer shell microchip capsules and a plugging device; the soluble bridge plug body has a first through hole capable of passing through the soluble outer shell microchip capsules, and the soluble bridge plug body is used for plugging an oil well; the plurality of soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole; the soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged in the soluble outer shell, the microchip capsule includes a micro control unit, a temperature sensor and a pressure sensor connected to the micro control unit; the temperature sensor is used for measuring the temperature during the plugging process of the oil well; the pressure sensor is used for measuring the pressure during the plugging process of the oil well; the micro control unit is used for storing the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor; the plugging device is used for plugging the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well; thus, the microchip capsule can collect and record the temperature data and pressure data during the plugging and fracturing processes of the oil well in real time. After the soluble bridge plug body dissolves and the microchip capsule flows out of the oil wellhead with the fracturing fluid and is recovered, the temperature data and pressure data during the plugging and fracturing processes of the oil well can be obtained from the microchip capsule, so that the plugging effect of the soluble bridge plug can be evaluated, and the plugging and fracturing processes can be optimized, which has important value for studying the plugging technology under relevant geological environments and well conditions.

[0071] The embodiment of the present application also provides a method for obtaining oil well parameters, as Figure 6 shown, including:

[0072] S601, putting a soluble bridge plug into the oil wellhead and placing the soluble bridge plug at a specified position in the oil well. Wherein, the soluble bridge plug includes a soluble bridge plug body, a plurality of soluble outer shell microchip capsules and a plugging device; the soluble bridge plug body has a first through hole capable of passing through the soluble outer shell microchip capsules, and the soluble bridge plug body is used for plugging an oil well; the plurality of soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole; the soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged in the soluble outer shell, the microchip capsule includes a micro control unit, a temperature sensor and a pressure sensor connected to the micro control unit; the temperature sensor is used for measuring the temperature during the plugging process of the oil well; the pressure sensor is used for measuring the pressure during the plugging process of the oil well; the micro control unit is used for storing the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor; when the soluble bridge plug enters the oil well, the temperature sensor and the pressure sensor are in a working state; the plugging device is used for plugging the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well.

[0073] In this embodiment, the specific implementation manner of the soluble bridge plug can be seen in the description of the soluble bridge plug in the above embodiment, and will not be elaborated here.

[0074] In specific implementation, a soluble bridge plug is placed through the wellhead of the oil well, and the soluble bridge plug is positioned at a specified location in the oil well, which may include: placing the soluble bridge plug body through the wellhead of the oil well and positioning the soluble bridge plug body at a specified location in the oil well; placing a plurality of soluble outer shell microchip capsules through the wellhead of the oil well and positioning the plurality of soluble outer shell microchip capsules at a first position and a second position in a first through hole of the soluble bridge plug body; placing a plugging device through the wellhead of the oil well to plug the first through hole of the soluble bridge plug body.

[0075] For example, as Figure 7 shown, first, the soluble bridge plug body can be placed through the wellhead of the oil well at a specified location in the horizontal section of the oil well. After the soluble bridge plug body reaches the specified location, it gets stuck to the wellbore wall. Then as Figure 8 shown, a plurality of soluble outer shell microchip capsules can be placed through the wellhead of the oil well into the oil well and reach a first position and a second position in the first through hole of the soluble bridge plug body, that is, the bridge plug hole. The first position can be a position close to the first end of the first through hole, and the second position can be a position close to the second end of the first through hole. Among them, before the microchip capsules are placed into the oil well, the temperature sensor and the pressure sensor can be activated. In this way, after entering the oil well, the temperature sensor and the pressure sensor can continuously measure the temperature and pressure. Then as Figure 9 shown, a plugging device, exemplified as a soluble bridge plug ball in the figure, can be placed through the wellhead of the oil well into the oil well and reach the first through hole of the soluble bridge plug body to plug the first through hole of the soluble bridge plug body.

[0076] S602, injecting fracturing fluid through the wellhead of the oil well to perform a fracturing operation on the soluble bridge plug; wherein, the soluble bridge plug body and the soluble outer shell of the soluble outer shell microchip capsules dissolve during the fracturing operation.

[0077] In specific implementation, as Figure 9 shown, fracturing fluid can be injected through the wellhead of the oil well to perform a fracturing operation on the soluble bridge plug to generate artificial cracks.

[0078] S603, obtaining the microchip capsules through the wellhead of the oil well to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing process of the soluble bridge plug.

[0079] In specific implementation, as Figure 10 shown, after the fracturing operation, the soluble bridge plug body and the soluble bridge plug ball will dissolve, and the soluble outer shell of the microchip capsules will also dissolve, thereby releasing the microchip capsules. The microchip capsules can flow out of the wellhead through their own buoyancy and the drilling fluid for recovery.

[0080] After obtaining the microchip capsule, since the temperature sensor and pressure sensor in the microchip capsule can collect and record the temperature data and pressure data during the oil well plugging and fracturing processes in real time, the temperature data and pressure data stored in the microchip capsule can be read, and the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the whole process of oil well plugging and fracturing can be obtained. In this way, the temperature data and pressure data during the whole process of oil well plugging and fracturing can be obtained relatively simply.

[0081] The method for obtaining oil well parameters provided by the embodiment of the present application includes setting the soluble bridge plug to include a soluble bridge plug body, a plurality of soluble outer shell microchip capsules, and a plugging device; the soluble bridge plug body has a first through hole capable of passing through the soluble outer shell microchip capsules, and the soluble bridge plug body is used for plugging the oil well; a plurality of soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole; the soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged inside the soluble outer shell, and the microchip capsule includes a micro control unit, a temperature sensor, and a pressure sensor connected to the micro control unit; the temperature sensor is used for measuring the temperature during the oil well plugging process; the pressure sensor is used for measuring the pressure during the oil well plugging process; the micro control unit is used for storing the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor; the plugging device is used for plugging the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well; in this way, the microchip capsule can collect and record the temperature data and pressure data during the oil well plugging and fracturing processes in real time. After the soluble bridge plug body dissolves and the microchip capsule flows out of the oil wellhead with the fracturing fluid and is recovered, the temperature data and pressure data during the oil well plugging and fracturing processes can be obtained from the microchip capsule, so that the plugging effect of the soluble bridge plug can be evaluated, and the plugging and fracturing processes can be optimized, which has important value for studying the plugging technology under relevant geological environments and well conditions.

[0082] In an optional embodiment, the method for obtaining oil well parameters further includes:

[0083] Evaluating the plugging effect of the soluble bridge plug based on the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing process of the soluble bridge plug.

[0084] In this embodiment, evaluating the plugging effect of the soluble bridge plug helps to analyze and optimize the plugging process, improve the oil and gas recovery rate, and reduce the production cost.

[0085] In an optional embodiment, the microchip capsule further includes a signal receiving module and a signal sending module connected to the micro control unit.

[0086] Step S603: Obtain the microchip capsule through the oil wellhead to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the soluble bridge plug fracturing process, which may include: sending a collection instruction of temperature and pressure to the signal receiving module of the microchip capsule, so that the micro control unit, based on the collection instruction, sends out the temperature data and pressure data stored at the first position and the second position through the signal sending module, so as to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the soluble bridge plug fracturing process.

[0087] In this embodiment, since the microchip capsule further includes a signal receiving module and a signal sending module, it is thus possible to return the temperature data and pressure data stored in the micro control unit to the user by means of wireless transmission, improving the user experience.

[0088] It should be understood that various forms of the processes shown above can be used, reordering, adding or deleting steps. For example, the steps described in this application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions disclosed in this application can be achieved, and no limitations are made herein.

[0089] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0090] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A soluble bridge plug, characterized in that, Comprising: A soluble bridge plug body, a plurality of soluble outer shell microchip capsules, and a plugging device; The soluble bridge plug body has a first through hole capable of passing through the soluble outer shell microchip capsules, and the soluble bridge plug body is used for plugging an oil well; A plurality of the soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole; The soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged inside the soluble outer shell. The microchip capsule includes a micro control unit, a temperature sensor and a pressure sensor connected to the micro control unit; the temperature sensor is used for measuring the temperature during the plugging process of the oil well; the pressure sensor is used for measuring the pressure during the plugging process of the oil well; the micro control unit is used for storing the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor; The plugging device is used for plugging the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well.

2. The soluble bridge plug according to claim 1, wherein The soluble outer shell includes a first soluble outer shell and a second soluble outer shell, and the first soluble outer shell and the second soluble outer shell are connected by threads to form the soluble outer shell.

3. The soluble bridge plug according to claim 2, wherein Both the first soluble outer shell and the second soluble outer shell have a plurality of second through holes penetrating the inner wall and the outer wall.

4. The soluble bridge plug according to claim 1, characterized in that, The microchip capsule further includes: A capsule housing; the micro control unit, the temperature sensor and the pressure sensor are arranged inside the capsule housing.

5. The soluble bridge plug according to claim 1, wherein, The microchip capsule further includes: A signal receiving module and a signal sending module connected to the micro control unit; The signal receiving module is used for receiving the acquisition instructions of temperature and pressure from the outside and sending them to the micro control unit; The signal sending module is used for sending out the temperature data and pressure data stored by the micro control unit.

6. The soluble bridge plug according to claim 1, wherein The microchip capsule further includes: A power module for supplying power to the micro control unit; An indicator light for indicating the state of the microchip capsule.

7. A method for obtaining oil well parameters, characterized in that, Comprising: Put the soluble bridge plug into the oil well through the oil wellhead and place the soluble bridge plug at a specified position in the oil well; wherein, the soluble bridge plug includes a soluble bridge plug body, a plurality of soluble outer shell microchip capsules and a plugging device; the soluble bridge plug body has a first through hole capable of passing through the soluble outer shell microchip capsules, and the soluble bridge plug body is used for plugging an oil well; a plurality of the soluble outer shell microchip capsules are arranged at a first position and a second position in the first through hole; the soluble outer shell microchip capsule includes a soluble outer shell and a microchip capsule arranged inside the soluble outer shell. The microchip capsule includes a micro control unit, a temperature sensor and a pressure sensor connected to the micro control unit; the temperature sensor is used for measuring the temperature during the plugging process of the oil well; the pressure sensor is used for measuring the pressure during the plugging process of the oil well; the micro control unit is used for storing the temperature data measured by the temperature sensor and the pressure data measured by the pressure sensor; when the soluble bridge plug enters the oil well, the temperature sensor and the pressure sensor are in a working state; the plugging device is used for plugging the first through hole of the soluble bridge plug body during the process of the soluble bridge plug body plugging the oil well; Inject fracturing fluid through the wellhead to perform a fracturing operation on the soluble bridge plug; wherein, the soluble outer shell of the soluble bridge plug body and the soluble outer shell of the soluble outer shell microchip capsule dissolve during the fracturing operation. Obtain the microchip capsule through the wellhead to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing of the soluble bridge plug.

8. The method for obtaining oil well parameters according to claim 7, characterized in that, Place the soluble bridge plug through the wellhead and position the soluble bridge plug at a designated position in the oil well, including: Place the soluble bridge plug body through the wellhead and position the soluble bridge plug body at a designated position in the oil well. Place a plurality of soluble outer shell microchip capsules through the wellhead and position the plurality of soluble outer shell microchip capsules at the first position and the second position in the first through hole of the soluble bridge plug body. Place a plugging device through the wellhead to plug the first through hole of the soluble bridge plug body.

9. The method for obtaining oil well parameters according to claim 7, characterized in that Further include: Evaluate the plugging effect of the soluble bridge plug based on the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing of the soluble bridge plug.

10. The method for obtaining oil well parameters according to claim 7, characterized in that, The microchip capsule further includes a signal receiving module and a signal sending module connected to the micro control unit. Obtain the microchip capsule through the wellhead to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing of the soluble bridge plug, including: Send a temperature and pressure acquisition instruction to the signal receiving module of the microchip capsule, so that the micro control unit, based on the acquisition instruction, sends the stored temperature data and pressure data at the first position and the second position through the signal sending module, to obtain the temperature data and pressure data at the first end and the second end of the soluble bridge plug during the fracturing of the soluble bridge plug.

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