阅读说明：本技术 井下无线数智排采系统 (Underground wireless digital intelligent drainage and production system ) 是由 杨瑞军 崔莲营 张永莉 张亮 彭伯秋 于 2021-10-27 设计创作，主要内容包括：本发明涉及柱塞气举排水采气技术领域,尤其涉及一种井下无线数智排采系统。本发明中井下无线数智排采系统包括：地面控制器；无线充电通信模块,其中地面控制器与无线充电通信模块有线连接,无线充电通信模块用于通信；井下智能柱塞以及防喷管,防喷管一端与井下智能柱塞连接,另一端与无线充电通信模块连接。本发明提供一种井下无线数智排采系统,能够通过井下智能柱塞实时检测并计算当前积液高度然后在井下预定位置悬停以防止柱塞被淹死。(The invention relates to the technical field of plunger gas lift drainage gas production, in particular to an underground wireless digital intelligent drainage and production system. The underground wireless digital intelligent drainage and production system comprises: a ground controller; the ground controller is connected with the wireless charging communication module in a wired mode, and the wireless charging communication module is used for communication; intelligence plunger and lubricator in the pit, lubricator one end is connected with intelligence plunger in the pit, and the other end is connected with wireless communication module that charges. The invention provides an underground wireless digital intelligent drainage and production system which can detect and calculate the current liquid loading height in real time through an underground intelligent plunger and then hover at an underground preset position to prevent the plunger from being drowned.)

1. The underground wireless digital intelligent arranging and extracting system is characterized by comprising:

a ground controller;

the ground controller is in wired connection with the wireless charging communication module, and the wireless charging communication module is used for communication;

an underground intelligent plunger;

and one end of the lubricator is connected with the underground intelligent plunger, and the other end of the lubricator is connected with the wireless charging communication module.

2. The underground wireless digital intelligent drainage and production system according to claim 1, further comprising a solar photovoltaic panel, wherein the solar photovoltaic panel is in limited connection with the ground controller, and the solar photovoltaic panel is used for providing power for the ground controller.

3. The underground wireless digital intelligent drainage and production system according to claim 2, wherein the ground controller comprises an external solar interface, a storage battery and charging management circuit, a key display unit, an external wireless charging communication module interface, a ground controller main control unit and other control communication interfaces;

the input end of the external solar interface is connected with the solar photovoltaic panel, and the output end of the external solar interface is connected with the storage battery and the charging management circuit;

the storage battery and the charging management circuit are used for providing a stable power supply for the ground controller;

the key display unit is connected with the ground controller main control unit and is used for parameter input, measurement value and system operation state display;

one end of the external wireless charging communication module interface is connected with the ground controller main control unit, and the other end of the external wireless charging communication module interface is connected with the wireless charging communication module;

the ground controller main control unit is used for data operation processing, output control and communication management of the ground controller.

4. The system of claim 3, wherein the surface controller further comprises other communication interfaces, and the other communication interfaces are connected with the main control unit of the surface controller for expanding functions.

5. The system according to claim 4, wherein the wireless charging communication module comprises an induction coil interface in the lubricator, a coil excitation and carrier transceiving processing circuit, a wireless charging communication module main control unit and a wireless module power supply communication interface;

one end of an induction coil interface in the blowout preventer is connected with an induction coil in the blowout preventer, and the other end of the induction coil interface is connected with the coil excitation and carrier receiving and transmitting processing circuit; the coil excitation and carrier receiving and transmitting processing circuit is connected with the wireless charging communication module main control unit; the wireless charging communication module main control unit is used for processing tasks such as coil excitation management, modulation and demodulation of wireless carrier data and communication management with the ground controller in the module; and one end of the wireless module power supply communication interface is connected with the wireless charging communication module main control unit.

6. The system of claim 5, wherein the wireless module power supply communication interface is connected to the external wireless charging communication module interface at an end thereof remote from the wireless charging communication module main control unit.

Technical Field

The invention relates to the technical field of plunger gas lift drainage gas production, in particular to an underground wireless digital intelligent drainage and production system.

Background

As the gas well is produced, liquid accumulation is gradually generated at the bottom of the well, and when the liquid accumulation is increased, the normal production of the gas well is influenced, and even the production is stopped in severe cases. To increase the recovery of natural gas and extend the life of a gas well, the accumulated fluids must be removed from the well bottom. In the related art, the intelligent plunger gas lift water drainage gas recovery control system is difficult to stop the intelligent plunger from falling, so that the underground plunger is in risk of being drowned.

Disclosure of Invention

The application discloses system is arranged and adopted to wireless number intelligence in pit, uses this system is arranged and adopts to wireless number intelligence in pit to get rid of the risk that the plunger was drowned in the pit.

The application discloses system is arranged and adopted to wireless number intelligence in pit includes:

a ground controller;

the ground controller is in wired connection with the wireless charging communication module, and the wireless charging communication module is used for communication;

an underground intelligent plunger;

and one end of the lubricator is connected with the underground intelligent plunger, and the other end of the lubricator is connected with the wireless charging communication module.

Furthermore, the underground wireless digital intelligent drainage and mining system further comprises a solar photovoltaic panel, wherein the solar photovoltaic panel is in limited connection with the ground controller, and the solar photovoltaic panel is used for providing a power supply for the ground controller.

Furthermore, the ground controller comprises an external solar interface, a storage battery and charging management circuit, a key display unit, an external wireless charging communication module interface, a ground controller main control unit and other control communication interfaces;

the input end of the external solar interface is connected with the solar photovoltaic panel, and the output end of the external solar interface is connected with the storage battery and the charging management circuit;

the storage battery and the charging management circuit are used for providing a stable power supply for the ground controller;

the key display unit is connected with the ground controller main control unit and is used for parameter input, measurement value and system operation state display;

one end of the external wireless charging communication module interface is connected with the ground controller main control unit, and the other end of the external wireless charging communication module interface is connected with the wireless charging communication module;

the ground controller main control unit is used for data operation processing, output control and communication management of the ground controller.

Furthermore, the ground controller also comprises other communication interfaces, and the other communication interfaces are connected with the main control unit of the ground controller and used for expanding functions.

Furthermore, the wireless charging communication module consists of an induction coil interface in the blowout prevention pipe, a coil excitation and carrier receiving and transmitting processing circuit, a wireless charging communication module main control unit and a wireless module power supply communication interface;

one end of an induction coil interface in the blowout preventer is connected with an induction coil in the blowout preventer, and the other end of the induction coil interface is connected with the coil excitation and carrier receiving and transmitting processing circuit; the coil excitation and carrier receiving and transmitting processing circuit is connected with the wireless charging communication module main control unit; the wireless charging communication module main control unit is used for processing tasks such as coil excitation management, modulation and demodulation of wireless carrier data and communication management with the ground controller in the module; and one end of the wireless module power supply communication interface is connected with the wireless charging communication module main control unit.

Furthermore, one end of the wireless module power supply communication interface, which is far away from the wireless charging communication module main control unit, is connected with the external wireless charging communication module interface.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides an underground wireless digital intelligent drainage and production system which can detect and calculate the current liquid loading height in real time through an underground intelligent plunger and then hover at an underground preset position to prevent the plunger from being drowned. After the underground intelligent plunger reaches the wellhead, the ground controller communicates with the intelligent plunger in a wireless mode to acquire stored underground acquisition data, and meanwhile, the ground controller wirelessly charges the intelligent plunger to prolong the battery endurance. And the ground controller analyzes and processes the underground data and then adjusts the discharging and extracting parameters of the underground intelligent plunger at the wellhead in a wireless mode. The downhole intelligent plunger flow valve switching function eliminates the need for frequent well switching operations by the surface controller. Along with the application of the wireless digital intelligent technology, the automation degree of system detection and control is greatly improved, the risk that the underground plunger is 'drowned' is eliminated, the well does not need to be frequently switched on and off on site, the underground plunger does not need to be replaced by a battery and also does not need to be periodically salvaged, the system can reliably run for a long time, meanwhile, the manpower management and control cost is saved, the drainage and gas production efficiency of the system is improved, and the on-site gas production rate is increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a wireless digital intelligent downhole production system according to the present embodiment;

FIG. 2 is a functional block diagram of a ground controller according to the present embodiment;

fig. 3 is a functional block diagram of the wireless charging communication module according to the embodiment.

Reference numerals:

1: a ground controller; 1-1: an external solar interface; 1-2: a storage battery and a charging management circuit; 1-3: a key display unit; 1-4: an external wireless charging communication module interface; 1-5: a ground controller main control unit; 1-6: other control communication interfaces;

2: a wireless charging communication module; 2-1: an induction coil interface within the lubricator; 2-2: a coil excitation and carrier receiving and transmitting processing circuit; 2-3: the wireless charging communication module main control unit; 2-4: a wireless module power supply communication interface;

3: an underground intelligent plunger;

4: a lubricator;

5: a solar photovoltaic panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

As the gas well is produced, liquid accumulation is gradually generated at the bottom of the well, and when the liquid accumulation is increased, the normal production of the gas well is influenced, and even the production is stopped in severe cases. In order to increase the recovery of natural gas wells and extend the production life of gas wells, the accumulated fluids must be removed from the well bottom. The traditional plunger gas lift drainage gas production control system mainly operates in a mode of opening and closing a well by a ground controller, and an underground plunger belongs to an independent structural design and does not have any electronic acquisition and control part; the ground controller can only adjust the production system by means of parameters such as casing pressure, oil pipe pressure, plunger arrival sensor and the like measured at a wellhead, the conditions of downhole temperature, pressure and accumulated liquid are unknown, the discharge and production system needs to be adjusted frequently by people, if the discharge and production degree is set unreasonably, the situation that the plunger is 'drowned' can be caused seriously, and finally the gas well is stopped. At present, an intelligent plunger gas lift water drainage gas recovery control system increases the collection and storage of parameters such as underground temperature, pressure and the like on the basis of a traditional plunger, but still faces the following key problems: battery powered cruising ability of the underground intelligent plunger; how the data collected and stored by the underground intelligent plunger is communicated with the ground controller; how the ground controller adjusts the discharging and extracting parameters of the underground intelligent plunger; whether the ground controller can switch the well frequently or not is not needed; how to stop the intelligent plunger from falling when the underground accumulated liquid reaches a certain height, and the risk of 'drowning' the underground plunger possibly exists when the intelligent plunger continuously falls; the clamping sealing structure has the service life of a high-temperature-resistant wear-resistant compression type variable-diameter air bag, most of the air bags are worn in a field for more than half a month, and the service life is too short, so that the problems exist in the field and are urgently needed to be solved.

The technical solution of the present application will be further described with reference to the following embodiments and accompanying drawings.

The application discloses system is adopted to wireless digital intelligence row in pit, this row adopts the system and includes:

a ground controller 1;

the ground controller 1 is in wired connection with the wireless charging communication module 2, and the wireless charging communication module 2 is used for communication;

an underground intelligent plunger 3;

lubricator 4, lubricator 4 one end is connected with intelligent plunger 3 in the pit, and the other end is connected with wireless communication module 2 that charges. Further, the underground wireless digital intelligent drainage and mining system further comprises a solar photovoltaic panel 5, the solar photovoltaic panel 5 is in limited connection with the ground controller 1, and the solar photovoltaic panel 5 is used for providing a power supply for the ground controller 1.

As shown in fig. 1, the underground wireless digital intelligent drainage and production system comprises a ground controller 1, a wireless charging communication module 2, an underground intelligent plunger 3, a blowout prevention pipe 4 (including an induction coil) and a solar photovoltaic panel 5. The ground controller 1 is connected with the wireless charging communication module 2 in a wired manner, and supplies power to the wireless charging communication module 2 and supports communication. The wireless charging communication module 2 is connected with the blowout prevention pipe 4 (containing an induction coil) through a high-pressure-resistant sealing joint. The induction coil inside the underground intelligent plunger 3 and the induction coil inside the lubricator 4 (containing the induction coil) realize the functions of wireless charging and wireless communication at the wellhead in an electromagnetic induction mode. The solar photovoltaic panel 5 is in wired connection with the ground controller 1 and provides continuous energy for the ground controller 1.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a downhole wireless digital intelligent drainage and production system which can detect and calculate the current liquid loading height in real time through a downhole intelligent plunger 3 and then hover at a downhole preset position to prevent the plunger from being drowned. After the underground intelligent plunger 3 reaches the wellhead, the ground controller 1 communicates with the intelligent plunger in a wireless mode to acquire stored underground acquisition data, and meanwhile, the ground controller 1 charges the intelligent plunger in a wireless mode to prolong the battery endurance. The ground controller 1 analyzes and processes the underground data and then adjusts the discharging and extracting parameters of the underground intelligent plunger 3 at the wellhead in a wireless mode. The downhole intelligent plunger 3 flow valve switching function eliminates the need for frequent well opening and closing operations by the surface controller 1. Along with the application of the wireless digital intelligent technology, the automation degree of system detection and control is greatly improved, the risk that the underground plunger is 'drowned' is eliminated, the well does not need to be frequently switched on and off on site, the underground plunger does not need to be replaced by a battery and also does not need to be periodically salvaged, the system can reliably run for a long time, meanwhile, the manpower management and control cost is saved, the drainage and gas production efficiency of the system is improved, and the on-site gas production rate is increased.

In the embodiment of the application, in order to obtain a better technical effect, the ground controller 1 comprises an external solar interface 1-1, a storage battery and charging management circuit 1-2, a key display unit 1-3, an external wireless charging communication module 2 interface 14, a ground controller 1 main control unit and other control communication interfaces 1-6;

wherein, the input end of the external solar interface 1-1 is connected with the solar photovoltaic panel 5, and the output end of the external solar interface 1-1 is connected with the storage battery and the charging management circuit 1-2;

the storage battery and charging management circuit 1-2 is used for providing a stable power supply for the ground controller 1;

the key display unit 1-3 is connected with the main control unit of the ground controller 1, and the key display unit 1-3 is used for inputting parameters, displaying measured values and the running state of the system;

one end of an interface 14 of the external wireless charging communication module 2 is connected with a main control unit of the ground controller 1, and the other end of the interface 14 of the external wireless charging communication module 2 is connected with the wireless charging communication module 2;

the main control unit of the ground controller 1 is used for data operation processing, output control and communication management of the ground controller 1. The ground controller 1 also comprises other communication interfaces, and the other control communication interfaces 1-6 are connected with the main control unit of the ground controller 1 and used for expanding functions.

As shown in fig. 2, the ground controller 1 is composed of an external solar interface 1-1, a storage battery and charging management circuit 1-2, a key display unit 1-3, an external wireless charging communication module 2 interface 14, a ground controller 1 main control unit, and other control communication interfaces 1-6. The input of the external solar interface 1-1 is connected with the solar photovoltaic panel 5, and the output of the external solar interface 1-1 is connected with the storage battery and the charging management circuit 1-2. The storage battery and charging management circuit 1-2 provides stable power supply for each circuit module of the ground controller 1. The key display unit 1-3 is connected with the main control unit of the ground controller 1 and is used for inputting parameters, displaying measured values and the running state of the system; the interior of the interface 14 of the external wireless charging communication module 2 is connected with a main control unit of the ground controller 1, and the exterior of the interface 14 of the external wireless charging communication module 2 is connected with the power supply communication interfaces 2-4 of the wireless modules. The main control unit of the ground controller 1 is responsible for data operation processing, output control, communication management and the like of the ground controller 1. The other control communication interfaces 1-6 are connected with the main control unit of the ground controller 1 and used for expanding functions.

In the embodiment of the application, in order to obtain a better technical effect, the wireless charging communication module 2 consists of an induction coil interface 21 in the lubricator 4, a coil excitation and carrier receiving and transmitting processing circuit, a main control unit of the wireless charging communication module 2 and a wireless module power supply communication interface 2-4;

one end of an induction coil interface 21 in the lubricator 4 is connected with an induction coil in the lubricator 4, and the other end of the induction coil interface is connected with a coil excitation and carrier receiving and transmitting processing circuit; the coil excitation and carrier receiving and transmitting processing circuit is connected with the main control unit of the wireless charging communication module 2; the main control unit of the wireless charging communication module 2 is used for processing tasks such as coil excitation management, modulation and demodulation of wireless carrier data, communication management with the ground controller 1 and the like in the module; one end of the wireless module power supply communication interface 2-4 is connected with the main control unit of the wireless charging communication module 2. One end of the wireless module power supply communication interface 2-4, which is far away from the main control unit of the wireless charging communication module 2, is connected with an interface 14 of the external wireless charging communication module 2.

As shown in fig. 3, the wireless charging communication module 2 has an overall function including an induction coil interface 21 in the lubricator 4, a coil exciting and carrier receiving and transmitting processing circuit, a main control unit of the wireless charging communication module 2, and a wireless module power supply communication interface 2-4. One end of an induction coil interface 21 in the lubricator 4 is connected with an induction coil in the lubricator 4, and the other end of the induction coil interface is connected with a coil excitation and carrier receiving and transmitting processing circuit; the coil excitation and carrier receiving and transmitting processing circuit is connected with the main control unit of the wireless charging communication module 2; the main control unit of the wireless charging communication module 2 is responsible for processing tasks such as coil excitation management, modulation and demodulation of wireless carrier data, communication management with the ground controller 1 and the like in the module; one end of the wireless module power supply communication interface 2-4 is connected with the main control unit of the wireless charging communication module 2, and the other end is connected with the interface 14 of the external wireless charging communication module 2 of the ground controller 1.

In addition, the coil excitation and carrier transceiving processing circuit of the wireless charging communication module 2 is mainly composed of a coil excitation circuit and a carrier transceiving processing circuit. Because the motor driving battery pack in the underground intelligent plunger 3 supplies power for 12V, the charging voltage of the battery pack needs to be at least 14.8V, if bridge type rectification and filtering is adopted, the primary coil excitation circuit needs to generate at least 10.5V voltage, and the primary coil excitation adopts a MOSFET (metal oxide semiconductor field effect transistor) driving mode; the carrier wave receiving and transmitting processing circuit realizes the transmitting processing of carrier wave data on one hand and the receiving processing of the carrier wave data on the other hand, the modulation mode of the carrier wave transmitting data can be realized in a frequency modulation mode, wherein 1200Hz represents logic '1', 2200Hz represents logic '0', and the normal state is 1200Hz logic '1'; demodulation of carrier received data realizes conversion identification of logic '1' and logic '0' by continuously detecting received different frequency signals; reliable wireless communication can be realized by formulating a character encoding format and a communication protocol with verification.

The main control unit of the wireless charging communication module 2 is composed of an ultra-low power consumption single chip microcomputer and peripheral circuits thereof, and mainly realizes wireless energy-carrying communication, plunger control coil arrival detection and communication with the ground controller 1.

The power supply communication interface of the wireless charging communication module 2 is mainly connected with the ground controller 1, the ground controller 1 supplies power to the wireless charging communication module 2 through two power lines, and the two communication lines are communicated with the wireless charging communication module 2.

The underground wireless digital intelligent drainage and production system disclosed by the embodiment of the invention is described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the underground wireless digital intelligent drainage and production system and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.