Assembled intelligent downhole tool

Abstract

The invention discloses an intelligent downhole tool capable of being assembled. The intelligent downhole tool comprises an energy supply unit, a power driving unit, an intelligent information unit, a structure execution unit and at least one righting structure, the structure execution unit comprises a micro motor, an underground throttler mechanism, a plunger mechanism and other process measure structures, wherein the tail end of the micro motor is provided with a universal interface, and the micro motor can be combined at will. The ending ends of the energy supply unit, the power drive unit, the intelligent information unit, the structure execution unit and the righting structure are all arranged to be universal interfaces, and therefore combination of any units can be achieved. The micro motor, the underground throttler mechanism, the plunger mechanism and other process measure structures can be combined at will through universal interfaces, the requirements of different processes are met, and the purpose that the same intelligent underground tool can serve the whole life cycle of a natural gas well is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas exploitation, and in particular to an assemblable intelligent downhole tool. Background Art

[0002] Since the gas well production capacity is a process of attenuation during the natural gas well production process, in order to ensure the effective production of the natural gas well throughout its life cycle, it is necessary to insert different gas production tools such as downhole chokes and plungers at different production stages to complete the process implementation. However, at present, the development of intelligent downhole tools is mostly aimed at the development of tools for a single process, such as intelligent downhole chokes, intelligent plungers, intelligent dynamic monitoring tools, etc. Different processes still require the selection of different intelligent downhole tools, which hinders the application scope of intelligent downhole tools. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the development of intelligent downhole tools is mostly aimed at the development of tools for a single process, and different processes still require the selection of different intelligent downhole tools, which hinders the application scope of the intelligent downhole tools.

[0004] The object of the present invention is to provide an assemblable intelligent downhole tool, comprising an energy supply unit, a power drive unit, an intelligent information unit, a structural execution unit and at least one righting structure, all of which have a universal interface at the tail end and can be arbitrarily combined; the structural execution unit comprises a micro motor, a downhole throttle mechanism and a plunger mechanism, all of which have a universal interface at the tail end and can be arbitrarily combined.

[0005] When the above technical solution is adopted,

[0006] The present invention configures the energy supply unit, the power drive unit, the intelligent information unit, the structural execution unit and the tail end of the righting structure as a universal interface, thereby enabling the combination of any units; the micro motor, the downhole throttle mechanism, the plunger mechanism and other process measure structures can also be arbitrarily combined through the universal interface to meet the needs of different processes, so that the same intelligent downhole tool can serve the entire life cycle of the natural gas well.

[0007] As a possible design, the power drive unit includes a depth measurement detection element, a slip mechanism, and a crawling mechanism, all of which have a universal interface at the rear end and can be arbitrarily combined.

[0008] As a possible design, the intelligent information unit includes a sensor integration for reflecting the well status, and the sensor integration is communicatively connected to an intelligent control chip.

[0009] As a possible design, the well status includes the pressure, temperature, water content, downhole situation observation and monitoring of the wellbore integrity.

[0010] As a possible design, the energy supply unit includes an electrically connected micro gas turbine generator and a high-temperature energy storage battery.

[0011] As a possible design, the intelligent downhole tool includes an energy supply unit, a power drive unit, an intelligent information unit, a structure execution unit and at least one righting structure. The energy supply unit is electrically connected to the power drive unit, the intelligent information unit and the structure execution unit, and the intelligent information unit is communicatively connected to the power drive unit and the structure execution unit.

[0012] As a possible design, the intelligent downhole tool includes a straightening structure, an energy supply unit, a power drive unit, a straightening structure, an intelligent information unit and a structure execution unit which are connected in sequence.

[0013] As a possible design, the structural execution unit includes a micro motor, a downhole throttle mechanism, a plunger mechanism and other process measure structures connected in sequence.

[0014] As a possible design, the power drive unit includes a depth measurement detection element, a slip mechanism and a crawling mechanism which are connected in sequence.

[0015] As a possible design, the intelligent information unit is communicatively connected with the micro motor, downhole throttle mechanism, plunger mechanism, other process measures structure, depth measurement detection element, cava mechanism and crawling mechanism, and the energy supply unit is electrically connected with the micro motor, downhole throttle mechanism, plunger mechanism, other process measures structure, depth measurement detection element, cava mechanism and crawling mechanism.

[0016] The beneficial effects of the present invention are:

[0017] The energy supply unit provides electrical energy to other units; the power drive unit is used to measure the depth of the tool reaching the well, creeping, setting and unanchoring; the intelligent information unit is used to comprehensively process the information from other units and issue instructions to other units; the structure execution unit is used to produce gas. By setting a universal interface at the end of each unit, any combination of at least two units can be realized. Any structure of the structure execution unit can be combined with other units to build underground intelligent tools with different functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 4 is a structural diagram of an intelligent downhole tool in an embodiment of the present invention.

[0020] Marks and corresponding parts names in the attached drawings:

[0021] 1-Energy supply unit, 2-Power drive unit, 3-Intelligent information unit, 4-Structure execution unit, 5-Rightening structure. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Since the current development of intelligent downhole tools is mostly aimed at the development of tools for a single process, such as intelligent downhole chokes, intelligent plungers, intelligent dynamic monitoring tools, etc., different processes still require the selection of different intelligent downhole tools, which hinders the application scope of intelligent downhole tools.

[0028] In response to the above problems, Figure 1 As shown, an embodiment of the present invention provides an assemblable intelligent downhole tool. Figure 1 As shown, the intelligent downhole tool includes an energy supply unit 1, a power drive unit 2, an intelligent information unit 3, a structure execution unit 4 and at least one righting structure 5, all of which have universal interfaces at the end and can be arbitrarily combined.

[0029] The structure execution unit 4 includes but is not limited to a micro motor with a universal interface at the end and can be arbitrarily combined, a downhole choke mechanism and a plunger mechanism. The structure execution unit 4 can also include other process measure structures, and the end of other process measure structures also has a universal structure.

[0030] The present invention sets the end of the energy supply unit 1, the power drive unit 2, the intelligent information unit 3, the structure execution unit 4 and the righting structure 5 as a universal interface, so that any combination of units can be realized, and the intelligent downhole tool can be quickly and conveniently constructed. To realize the combination of any units, for example: the energy supply unit 1, the power drive unit 2, the intelligent information unit 3 and the structure execution unit 4 are connected in sequence, and the righting structure 5 can be connected between any two units.

[0031] Micro motors, downhole throttle mechanisms, plunger mechanisms and other process measures structures can also be combined arbitrarily through universal interfaces to meet the needs of different processes. When micro motors, downhole throttle mechanisms, plunger mechanisms and other process measures structures are assembled at the same time, the same intelligent downhole tool can serve the entire life cycle of the natural gas well, and can also be selectively installed according to the specific needs of different natural gas wells. For example, if only micro motors, downhole throttle mechanisms and plunger mechanisms are needed in the entire life cycle of the natural gas well, when assembling the structure execution unit 4, only the micro motors, downhole throttle mechanisms and plunger mechanisms need to be assembled. The action of the process measures structure can be controlled, and the process measures structure can be assembled arbitrarily to construct a multifunctional structure execution unit 4.

[0032] The specific structures of the downhole throttle mechanism, plunger mechanism and other process measures are common structures in this field. Only the terminal ends of these structures are changed into universal structures. Therefore, the downhole throttle mechanism, plunger mechanism and other process measures are not described in detail.

[0033] In the embodiment of the present invention, the energy supply unit 1 provides electrical energy to each unit so that each unit can work normally; the power drive unit 2 is mainly used to move in the wellbore and seal at the required position; the intelligent information unit 3 is mainly used to monitor the state in the wellbore, the downhole situation and the integrity of the wellbore, and process these data, analyze the processing results, and then issue instructions to other units to control the operation of other units; the straightening structure 5 is mainly used to reduce the position deviation of each unit during operation.

[0034] In the embodiment of the present invention, the energy supply unit 1 includes an electrically connected micro gas turbine generator and a high temperature energy storage battery. The micro gas turbine generator uses the gas in the wellbore to drive the turbine to rotate, thereby generating electromagnetic induction and generating electrical energy, which is then stored in the high temperature energy storage battery to provide electrical energy for other units.

[0035] In the embodiment of the present invention, the power drive unit 2 includes a depth measurement detection element, a slip mechanism and a crawling mechanism, all of which have a universal interface at the rear end and can be arbitrarily combined.

[0036] The depth measurement detection element, the slip mechanism and the crawling mechanism can be used in combination in any order, for example: the depth measurement detection element, the slip mechanism and the crawling mechanism, or the depth measurement detection element, the crawling mechanism and the slip mechanism, or the crawling mechanism, the depth measurement detection element and the slip mechanism, etc. Since the depth measurement detection element, the slip mechanism and the crawling mechanism all work independently, there is no special requirement for the installation order of the three.

[0037] The depth measurement detection element is mainly used to measure the depth in the wellbore, so a common depth measuring instrument in the art can be used, such as: eddy current sensor integration and the like.

[0038] The main function of the slip mechanism is to seal and unanchor, so the common sealing structure in this field can be adopted, such as: electric slips, which drive the hydraulic pump to drive the slip structure to expand and contract through the micro motor carried by the electric slips themselves, so that the tool can be sealed and unanchored in the wellbore.

[0039] The main function of the crawling mechanism is to move up and down in the wellbore to drive other structures to reach corresponding positions. Therefore, common crawling equipment in the field can be used, such as: casing wheel group crawler.

[0040] When the intelligent downhole tool falls in the wellbore, the position of the intelligent downhole tool is obtained through the depth measurement detection element, and the crawling mechanism retracts and extends the crawling wheel feet to slow down the tool, so that the intelligent downhole tool is suspended, and then the slip mechanism expands the slip structure to seal the intelligent downhole tool at a certain position.

[0041] In the embodiment of the present invention, the intelligent information unit 3 includes a sensor integration for reflecting the well status, and the sensor integration is communicatively connected with an intelligent control chip.

[0042] The well status here includes but is not limited to the pressure, temperature, water content, downhole conditions and wellbore integrity in the wellbore. The sensor integration collects this data and transmits it to the intelligent control chip. The intelligent control chip analyzes and calculates the operating status of the intelligent downhole tool, and issues orders to other units to control the operation of other units.

[0043] The sensor integration and the intelligent control chip are both communicatively connected with the depth measurement detection element, the slip mechanism, the crawling mechanism, the micro motor, the downhole choke mechanism, the plunger mechanism and other process measure structures. Specifically, the information input end of the sensor integration is communicatively connected with the depth measurement detection element, the slip mechanism, the crawling mechanism, the micro motor, the downhole choke mechanism, the plunger mechanism and other process measure structures; the information output end of the intelligent control chip is communicatively connected with the depth measurement detection element, the slip mechanism, the crawling mechanism, the micro motor, the downhole choke mechanism, the plunger mechanism and other process measure structures.

[0044] Since the high temperature energy storage battery mainly supplies power to other units, the high temperature energy storage battery is electrically connected to the depth measurement detection element, slip mechanism, crawling mechanism, micro motor, downhole choke mechanism, plunger mechanism and other process measures.

[0045] In the present invention, the micro gas turbine generator, high temperature energy storage battery, sensor integration and intelligent control chip, except for the tail end which is a common structure, the rest are existing structures and will not be described in detail here.

[0046] Example

[0047] This example provides an assemblable intelligent downhole tool, including an energy supply unit 1, a power drive unit 2, an intelligent information unit 3 and a structural execution unit 4, all of which have a universal interface at the terminal end, and also includes two righting structures 5, one of which is connected to the front end of the energy supply unit 1, where the front end refers to the end not connected to the power drive unit 2, and the other righting structure 5 is arranged between the power drive unit 2 and the intelligent information unit 3.

[0048] The energy supply unit 1 is composed of an electrically connected micro gas turbine generator and a high-temperature energy storage battery. The power drive unit 2 is composed of a depth measurement detection element, a slip mechanism and a crawling mechanism connected by a universal structure. The intelligent information unit 3 is composed of a sensor integration and an intelligent control chip connected to each other. The structural execution unit 4 is composed of a micro motor, a downhole choke mechanism, a plunger mechanism and other process measures.

[0049] The working principle is: the intelligent downhole tool is placed in the wellbore, and the energy supply unit 1 starts working immediately, using the gas in the wellbore to drive the turbine of the micro gas turbine generator to rotate, thereby generating electromagnetic induction and generating electrical energy, which is then stored in a high-temperature energy storage battery to power each unit.

[0050] During the operation of the intelligent downhole tool, the intelligent downhole tool uses its own weight to descend in the wellbore. During the descent, the sensor integration collects the pressure, temperature, and water content in the wellbore, observes the downhole conditions, and monitors the integrity of the wellbore. The intelligent control chip can analyze and calculate the tool operation status through the monitored data, and place orders to other units to control the operation of other units.

[0051] When the intelligent control chip needs to be sealed at a predetermined position through analysis, it sends a command to the power drive unit 2, uses the depth measurement detection element to obtain the position of the intelligent downhole tool, and slows down by retracting the crawling wheel feet through the crawling mechanism, so that the intelligent downhole tool can hover. Then the cava mechanism seals the intelligent downhole tool at a certain position, thereby replacing the wireline operation to seal the tool at a predetermined position.

[0052] When the intelligent downhole tool reaches the predetermined position, the intelligent control chip analyzes that a throttling process is required. At this time, the downhole throttle mechanism comes into play, and the operating mechanism is dynamically adjusted for adaptive throttling. When it comes to the later stage of drainage and production, the intelligent control chip analyzes that the water production of the gas well requires plunger drainage and gas production. At this time, the plunger mechanism comes into play, using the airflow in the wellbore to push the tool upward and lift the water column. When the gas well is insufficient in energy, a command is issued to the crawling mechanism, which retracts and retracts the crawling wheel feet to crawl, enabling the intelligent downhole tool to run freely and complete the corresponding process measures.

[0053] In the present invention, a micro motor refers to an electric motor with a relatively small volume and capacity, and an output power generally below several hundred watts.

[0054] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assemblable intelligent downhole tool, characterized in that: It includes an energy supply unit, a power drive unit, an intelligent information unit, a structure execution unit and at least one righting structure, all of which have a universal interface at the tail end and can be arbitrarily combined; the structure execution unit includes a micro motor, a downhole throttle mechanism and a plunger mechanism, all of which have a universal interface at the tail end and can be arbitrarily combined.

2. The assemblable intelligent downhole tool according to claim 1, characterized in that: The power drive unit comprises a depth measurement detection element, a slip mechanism and a crawling mechanism, all of which have a universal interface at the tail end and can be arbitrarily combined.

3. The assemblable intelligent downhole tool according to claim 1, characterized in that: The intelligent information unit includes a sensor integration for reflecting the well status, and the sensor integration is communicatively connected with an intelligent control chip.

4. The assembled intelligent downhole tool according to claim 3, characterized in that: The well status includes the pressure, temperature, water content, downhole condition observation and monitoring of the wellbore integrity.

5. The assembled intelligent downhole tool according to claim 1, characterized in that: The energy supply unit includes an electrically connected micro gas turbine generator and a high temperature energy storage battery.

6. The assembled intelligent downhole tool according to claim 1, characterized in that: The intelligent downhole tool includes an energy supply unit, a power drive unit, an intelligent information unit, a structure execution unit and at least one righting structure. The energy supply unit is electrically connected to the power drive unit, the intelligent information unit and the structure execution unit. The intelligent information unit is communicatively connected to the power drive unit and the structure execution unit.

7. The assembled intelligent downhole tool according to claim 6, characterized in that: The intelligent downhole tool comprises a righting structure, an energy supply unit, a power drive unit, a righting structure, an intelligent information unit and a structure execution unit which are connected in sequence.

8. The assembled intelligent downhole tool according to claim 7, characterized in that: The structural execution unit comprises a micro motor, a downhole throttle mechanism, a plunger mechanism and other process measure structures which are connected in sequence.

9. The assembled intelligent downhole tool according to claim 8, characterized in that: The power drive unit comprises a depth measurement detection element, a slip mechanism and a crawling mechanism which are connected in sequence.

10. The assembled intelligent downhole tool according to claim 9, characterized in that: The intelligent information unit is communicatively connected with the micro motor, downhole throttle mechanism, plunger mechanism, other process measures structure, depth measurement detection element, slip mechanism and crawling mechanism, and the energy supply unit is electrically connected with the micro motor, downhole throttle mechanism, plunger mechanism, other process measures structure, depth measurement detection element, slip mechanism and crawling mechanism.

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