Intelligent production allocation system based on microwave moisture content measurement

Abstract

The invention provides an intelligent production allocation system based on microwave moisture content measurement, and relates to the technical field of intelligent layered fine production allocation operation of petroleum and natural gas wells. Comprising a ground control module used for opening an underground tester of each oil layer in an underground separate mining test module; the ground testing module is used for measuring the flow of the underground produced liquid in each oil layer in real time when oil is exploited layer by layer, and measuring the water content of the underground produced liquid in each oil layer in real time by utilizing a microwave method; the ground control module is further used for determining an oil nozzle opening degree adjusting instruction of each underground tester according to the water content and the flow and adjusting an oil nozzle switch of each underground tester according to the oil nozzle opening degree adjusting instruction; and the underground separate mining test module is used for mining petroleum of each oil layer through the adjusted oil nozzle switch. Therefore, the accuracy and the stability of the measurement of the water content are high.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent stratified fine production allocation operation of oil and gas wells, and in particular to an intelligent production allocation system based on microwave water content measurement. Background Art

[0002] The intelligent layered fine oil production process requires the use of packers to separate the various oil layers underground, and the installation of downhole production distributors in the oil layers separated by adjacent packers. The downhole production distributor is directly connected to the ground controller by a cable, and the downhole production distributor transmits the test data results to the ground controller and the ground personal computer (PC). The ground controller and the ground PC perform statistical analysis on the test data results, and according to the results of the statistical analysis, the low-yield and high-water-containing layers are blocked, and the high-yield and low-water-containing layers are exploited. Since the identification of high-water-containing formations and low-water-containing formations depends on the measurement of water content, the accuracy of water content measurement is particularly important for the judgment of the authenticity of the formation.

[0003] At present, the water content measurement methods available in the market are usually capacitance method, float method and impedance method, etc. However, due to their own structural principles, oil-water mixing form, mineralization and the influence of associated gas, capacitance method, float method and impedance method have certain limitations, making the accuracy and stability of water content measurement low and unable to achieve accurate measurement. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide an intelligent production allocation system based on microwave moisture content measurement to solve the problem that the accuracy and stability of moisture content measurement are not high.

[0005] To solve the above technical problems, the embodiments of the present invention provide the following technical solutions: The present invention provides an intelligent production allocation system based on microwave moisture content measurement, comprising a ground control module, a ground test module and an underground production test module; A ground control module, connected to both the ground test module and the downhole separation test module, and used to open a downhole tester for each oil layer in the downhole separation test module; The ground test module is used to measure the flow rate of the produced fluid in each oil layer in real time when the oil is produced layer by layer, and to measure the water content of the produced fluid in each oil layer in real time by using the microwave method; The ground control module is also used to determine the nozzle opening adjustment instruction of each downhole tester according to the water content and the flow rate, and adjust the nozzle switch of each downhole tester according to the nozzle opening adjustment instruction; The downhole production test module is used to produce oil from each oil layer through the adjusted oil nozzle switch.

[0006] In some embodiments, the surface test module includes a surface microwave moisture tester, a surface flow tester, and a surface wellhead device; The ground microwave water content tester is used to measure the water content of the produced fluid in each oil layer in real time by microwave method when oil is produced layer by layer; Surface flow tester, used to measure the flow rate of downhole produced fluid in each oil layer in real time; The surface wellhead device is used to connect to the surface control module via a cable.

[0007] In some embodiments, the ground control module includes a ground controller and a ground host computer, and the ground controller is connected to the ground host computer, the ground test module and the downhole production test module.

[0008] In some embodiments, a ground host computer is used to operate a ground controller; A ground controller is specifically used to determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is an increase instruction when the water content is less than a preset value and the flow rate is greater than the upper boundary of a preset range, and the oil nozzle switch is adjusted up according to the increase instruction; when the water content is less than a preset value and the flow rate is less than the lower boundary of a preset range, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is an increase instruction, and the oil nozzle switch is adjusted up according to the increase instruction; when the water content is greater than the preset value and the flow rate is less than the lower boundary of the preset range, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is a decrease instruction, and the oil nozzle switch is adjusted down according to the decrease instruction; when the water content is greater than the preset value and the flow rate is greater than the upper boundary of the preset range, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is a decrease instruction, and the oil nozzle switch is adjusted down according to the decrease instruction.

[0009] In some embodiments, the downhole production test module includes multiple packers, multiple downhole testers and downhole accessory tools. Each oil layer is provided with a packer and a downhole tester. A packer and a downhole tester in each oil layer are connected by an oil pipe.

[0010] In some embodiments, each downhole tester is used to test the pressure and temperature of each oil layer.

[0011] In some embodiments, the ground test module further includes a data storage submodule, and the data storage submodule is used to store water content and flow rate.

[0012] In some embodiments, the ground test module is powered by a battery or a DC power supply output by a ground control module.

[0013] In some embodiments, the ground control module and the ground test module are connected via RS485 communication.

[0014] In some embodiments, the surface control module is connected to the downhole extraction and testing module via a cable.

[0015] Compared with the prior art, the present invention provides an intelligent production allocation system based on microwave moisture content measurement, comprising a ground control module, a ground test module and a downhole production separation test module; the ground control module is connected to both the ground test module and the downhole production separation test module, and is used to open the downhole tester of each oil layer in the downhole production separation test module; the ground test module is used to measure the flow rate of the downhole produced fluid in each oil layer in real time when oil is produced layer by layer, and to measure the water content of the downhole produced fluid in each oil layer in real time by using a microwave method; the ground control module is also used to determine the nozzle opening adjustment instruction of each downhole tester according to the water content and the flow rate, and to adjust the nozzle switch of each downhole tester according to the nozzle opening adjustment instruction; the downhole production separation test module is used to produce oil in each oil layer through the adjusted nozzle switch. In this way, the ground test module uses the microwave method to measure the water content of each oil layer in real time, and can collect the precise water content corresponding to each oil layer. Through the precise water content and flow rate of each oil layer, different oil nozzle opening adjustment instructions can be determined for each downhole tester, and the oil nozzle switch of each downhole tester can be adjusted differently to better exploit oil in each oil layer, so that the water content measurement has higher accuracy and higher stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 The system principle block diagram of the intelligent production allocation system based on microwave moisture content measurement is schematically shown; Figure 2 The control block diagram of the ground test module and the ground control module is schematically shown; Figure 3 The control block diagram of the downhole tester and the ground control module is schematically shown; Figure 4 The structure diagram of the intelligent production allocation system based on microwave moisture content measurement is schematically shown. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0018] An intelligent production allocation system based on microwave moisture content measurement in an embodiment of the present invention is described in detail below.

[0019] See also Figure 1 As shown, Figure 1 The system principle block diagram of the intelligent production allocation system based on microwave moisture content measurement is schematically shown. The embodiment of the present invention proposes an intelligent production allocation system based on microwave moisture content measurement, including a ground control module, a ground test module and an underground production test module; A ground control module, connected to both the ground test module and the downhole separation test module, and used to open a downhole tester for each oil layer in the downhole separation test module; The ground test module is used to measure the flow rate of the produced fluid in each oil layer in real time when the oil is produced layer by layer, and to measure the water content of the produced fluid in each oil layer in real time by using the microwave method; The ground control module is also used to determine the nozzle opening adjustment instruction of each downhole tester according to the water content and the flow rate, and adjust the nozzle switch of each downhole tester according to the nozzle opening adjustment instruction; The downhole production test module is used to produce oil from each oil layer through the adjusted oil nozzle switch.

[0020] Specifically, the ground control module is also used to detect and control the status of the ground test module and the downhole production test module. The ground test module is a test module for the water content and flow rate of the downhole produced fluid in each oil layer, and can monitor the water content and flow rate of the downhole produced fluid. In addition to the oil production function of each oil layer, the downhole production test module can also realize the detection of parameters such as formation isolation, downhole pressure and temperature.

[0021] In this embodiment, the ground testing module includes a ground microwave moisture tester, a ground flow tester and a ground wellhead device; the ground microwave moisture tester is used to measure the water content of the downhole produced fluid in each oil layer in real time by microwave method when oil is extracted layer by layer; the ground flow tester is used to measure the flow rate of the downhole produced fluid in each oil layer in real time; the ground wellhead device is used to connect the ground control module via a cable.

[0022] In this embodiment, the ground test module further includes a data storage submodule, and the data storage submodule is used to store the water content and flow rate.

[0023] In this embodiment, the ground test module is powered by a battery or a DC power supply output by a ground control module.

[0024] In this embodiment, the ground control module and the ground test module are connected via RS485 communication.

[0025] Specifically, the ground test module mainly measures the situation of the produced fluid downhole, can test the flow rate and water content of the produced fluid of a single oil layer or multiple oil layers, and monitor the wellhead string pressure. The water content measurement method of the ground test module adopts the microwave method, which can achieve 0-100% water content test and achieve real-time monitoring of the produced fluid of the oil layer. The ground test module can be used alone or interactively with the ground control module for data transmission. The ground control module can collect data from the ground test module, and the collected data can be flow rate and water content.

[0026] The ground test module of the present invention adopts a microwave method to measure the water content of the downhole produced fluid in each oil layer in real time. The microwave method has high precision and a wide range, making the measured water content more accurate.

[0027] In this embodiment, the ground control module includes a ground controller and a ground host computer, and the ground controller is connected to the ground host computer, the ground test module and the downhole separation and production test module.

[0028] In the present embodiment, the ground host computer is used to operate the ground controller; the ground controller is specifically used to determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is an increase instruction when the water content is less than a preset value and the flow rate is greater than the upper boundary of a preset range, and to increase the oil nozzle switch according to the increase instruction; when the water content is less than a preset value and the flow rate is less than the lower boundary of a preset range, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is an increase instruction, and to increase the oil nozzle switch according to the increase instruction; when the water content is greater than the preset value and the flow rate is less than the lower boundary of the preset range, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is a decrease instruction, and to decrease the oil nozzle switch according to the decrease instruction; when the water content is greater than the preset value and the flow rate is greater than the upper boundary of the preset range, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is a decrease instruction, and to decrease the oil nozzle switch according to the decrease instruction.

[0029] Specifically, the preset value is a preset water content value, and the preset value is 20%, that is, there are 20% water and 80% oil. The preset range is a preset flow range, and the preset range is 5 cubic meters per day to 15 cubic meters per day.

[0030] Exemplarily, a ground controller is specifically used to determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is an increase instruction when the water content is less than 20% and the flow rate is greater than 15 cubic meters per day, and to increase the oil nozzle switch according to the increase instruction; when the water content is less than 20% and the flow rate is less than 5 cubic meters per day, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is an increase instruction, and to increase the oil nozzle switch according to the increase instruction; when the water content is greater than 20% and the flow rate is less than 5 cubic meters per day, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is a decrease instruction, and to decrease the oil nozzle switch according to the decrease instruction; when the water content is greater than 20% and the flow rate is greater than 15 cubic meters per day, determine that the oil nozzle opening adjustment instruction of the corresponding downhole tester is a decrease instruction, and to decrease the oil nozzle switch according to the decrease instruction.

[0031] Correspondingly, the downhole production test module is specifically used to exploit the oil in the corresponding oil layer by adjusting the oil nozzle switch to a larger value, or to exploit the oil in the corresponding oil layer by adjusting the oil nozzle switch to a smaller value.

[0032] As another optional implementation mode of the present invention, when oil is extracted layer by layer, the nozzle switch is adjusted up or down according to the water content and flow rate; when the water content of a certain oil layer is low and the flow rate is large, the nozzle switch is adjusted up to increase the oil recovery rate; when the water content of a certain oil layer is high and the flow rate is small, the nozzle switch is adjusted down to extract the oil layer with high oil production rate; when the water content of a certain oil layer is high and the flow rate is large, the nozzle switch is adjusted down; when the water content of a certain oil layer is low and the flow rate is small, the nozzle switch is adjusted up.

[0033] For example, the first oil layer has a high water content and a large flow rate, while the second oil layer has a low water content and a small flow rate. A comprehensive comparison shows that the oil production rate of the second oil layer is higher. The ground controller in the ground control module can be used to adjust the oil nozzle switch of the downhole tester to adjust the oil nozzle opening. Specifically, the ground controller can be used to increase or even fully open the oil nozzle switch of the downhole tester in the second oil layer, and the oil nozzle switch of the downhole tester in the first oil layer can be reduced. The oil nozzle switch can be increased or reduced according to the actual needs of the user.

[0034] Figure 2The control block diagram of the ground test module and the ground control module is schematically shown. The control block diagram of the ground test module includes a microcontroller, a power management module, RS485 communication, a remote terminal unit (RTU) / data transfer unit (DTU), a water sensor, a flow sensor, a pressure sensor and a data storage submodule. The microcontroller is connected to the RTU / DTU through RS485 communication. The microcontroller can obtain the required data input by the user through keyboard input, and can display the required data to be displayed by the microcontroller through a liquid crystal display (LCD). The ground microwave water tester includes a water sensor, which is a microwave water test nipple. The working principle of the microwave water test nipple is based on the microwave radio frequency principle, and a microwave water probe is integrated. The water content is measured by signal and program control combined with the microwave method. The ground flow tester includes a flow sensor, which is a flow test nipple. The flow test nipple uses a mass flowmeter to test the flow. The ground test module also includes a pressure sensor, which can measure the wellhead oil pressure in real time and monitor the wellhead pressure in real time through signal acquisition. The water content sensor can transmit the water content to the microcontroller, the flow sensor can transmit the flow rate to the microcontroller, and the pressure sensor can transmit the wellhead oil pressure and wellhead pressure to the microcontroller. The ground test module can be powered by a battery or by a DC power supply output by the ground control module. The switching power supply in the ground control module can be connected to the power management module in the ground test module to realize power supply by the DC power supply output by the ground control module. The ground test module also includes a data storage submodule, which stores the water content and flow rate. The flow rate, water content and wellhead pressure collected by the ground test module can be directly read and communicated with the ground control module through RS485 communication.

[0035] See also Figure 2 As shown, the ground control module includes a ground controller and a ground host computer, and the ground controller includes a ground control chip, a switching power supply connected to the ground control chip, a storage submodule, a ground decoding circuit and a ground encoding circuit. Among them, the ground decoding circuit and the ground encoding circuit are connected to the RTU / DTU in the ground test module through RS485.

[0036] In this embodiment, the downhole production test module includes multiple packers, multiple downhole testers and downhole accessory tools. Each oil layer is provided with a packer and a downhole tester. A packer and a downhole tester in each oil layer are connected by an oil pipe.

[0037] In this embodiment, each downhole tester is used to test the pressure and temperature of each oil layer.

[0038] In this embodiment, the ground control module is connected to the downhole extraction and testing module via a cable.

[0039] Each downhole tester can test the pressure and temperature of each oil layer isolated by the packer, which is of great significance to oilfield production and operations.

[0040] Specifically, Figure 3 The control block diagram of the downhole tester and the ground control module is schematically shown. The connection between the downhole test module and the ground control module is mainly through the downhole tester in the downhole test module and the ground control module. The control block diagram of the downhole tester includes a downhole microcontroller, a motor connected to the downhole microcontroller, an inclination sensor, a nozzle switch, an inner and outer pressure gauge and a temperature sensor of the sealing tube, a downhole encoding circuit and a downhole decoding circuit. The packer in the downhole test module realizes multi-stage formation isolation and is used in conjunction with the downhole tester. A downhole tester and a packer are placed in each oil layer, and the packer is a cable packer. Among them, the downhole tester is connected to the packer through an oil pipe, and the pressure and temperature of each oil layer tested by the downhole tester are transmitted to the ground controller through a cable, which can realize real-time monitoring of the downhole tester. The ground control module includes a ground controller and a ground host computer. The ground controller includes a ground control chip, a switching power supply, a storage submodule, a ground decoding circuit and a ground encoding circuit connected to the ground control chip. The downhole coding circuit and the downhole decoding circuit are connected to the ground decoding circuit and the ground coding circuit through cables. The downhole tester sends the pressure and temperature of each oil layer to the ground controller through cables, and operates the ground controller through the ground host computer. The ground controller can turn on the downhole tester of each oil layer in the downhole production test module, and can also adjust the nozzle switch of each downhole tester to adjust the opening of the nozzle switch of the downhole tester. The cable transmission between the downhole tester and the ground controller is mainly realized by using the downhole coding circuit and the downhole decoding circuit of the downhole tester to realize the two-way transmission control between the ground decoding circuit and the ground coding circuit of the ground controller, thereby realizing the direct reading of data between the downhole tester and the ground controller and the control of the nozzle switch, and controlling the adjustment of the nozzle switch of each downhole tester.

[0041] The intelligent production allocation system based on microwave water content measurement realizes intelligent stratified oil production of multiple oil layers in the oil well through the organic combination of three parts: downhole production test module, ground test module and ground control module, so as to realize the digitalization and intelligence of oil production and achieve fine oil production of the oil layer. The pressure and temperature of each oil layer collected by the downhole tester of each oil layer are transmitted to the ground control module in real time through a single-core cable, and then combined with the flow rate and water content collected in the ground test module, they are transmitted to the ground control module in real time; when the ground control module opens the switch of each downhole tester layer by layer, the ground test module collects the flow rate and water content in real time, and feeds back the flow rate, water content, pressure and temperature of the current oil layer to the ground control module; after each oil layer is tested, the flow rate and water content of each oil layer can be obtained. If the water content of the first oil layer is very high and the flow rate is large, and the water content of the second oil layer is very low and the flow rate is small, the comprehensive comparison shows that the oil production rate of the second oil layer is higher, then the oil nozzle switch of the downhole tester can be adjusted through the ground controller in the ground control module to adjust the oil nozzle opening. Adjusting the nozzle switch of the downhole tester can also be called adjusting the production system. Specifically, the nozzle switch of the downhole tester in the second oil layer is increased or even fully opened through the ground controller, and the nozzle switch of the downhole tester in the first oil layer is decreased. The increase and decrease of the nozzle switch can be adjusted according to the actual needs of the user. Since the second oil layer is the main layer and the high-yield layer, the stratified production can be achieved by increasing the nozzle switch of the downhole tester in the second oil layer or even fully opening it, and decreasing the nozzle switch of the downhole tester in the first oil layer. The adoption of this production system can greatly improve the oil recovery rate, making oilfield production more scientific, intelligent, visual and convenient.

[0042] It is also possible to calculate and analyze the water content and flow rate measured by the ground test module and the pressure and temperature of each oil layer collected by the downhole tester using the compensation algorithm of microwave water content measurement to determine whether the current oil layer, i.e., the production layer, is the main production layer and the high-yield layer. The mining system is adjusted according to the result of the judgment, that is, the adjustment of the oil nozzle switch of the downhole tester is determined to carry out stratified production; in the process of oil production, the mining system can be adjusted according to the water content and flow rate collected by the ground control module. This provides a dynamic visual cycle for oil field production, real-time grasp of the state of the oil layer and the crude oil content, always select the main production layer with low water content, high flow rate and high recovery pressure for production, seal the bottom of the high water content, low flow rate and negative pressure of the deficit formation, and prevent the downhole produced fluid of the high-yield formation from the high-yield layer from backflowing into the deficit formation, where high recovery pressure refers to the ability to quickly restore pressure during oil production.

[0043] The intelligent production allocation system based on microwave water content measurement can achieve high-precision water content, high-precision flow rate, high-precision downhole formation pressure and high-precision temperature and other multi-parameter measurements using microwave method, so that the oil field can achieve intelligent and high-efficiency production. The intelligent production allocation system based on microwave water content measurement can separate the oil layer into multiple layers, and can selectively exploit only the oil layer with high production according to the production of each oil layer in different periods, and adjust the exploitation system according to the water content and flow rate to achieve fine production allocation.

[0044] Figure 4 The structure diagram of the intelligent production allocation system based on microwave moisture measurement is schematically shown, see Figure 4 As shown, the structure of the intelligent production allocation system based on microwave moisture content measurement includes a ground controller, a PC host computer, i.e., a ground host computer, and a remote central control room. The ground controller is connected to the remote central control room by wire or wireless, and the ground controller is connected to the PC host computer. The structure of the intelligent production allocation system based on microwave moisture content measurement also includes a microwave moisture test nipple, i.e., a moisture sensor, a flow test nipple, i.e., a flow sensor, a wellhead sealing device, and a wellhead tee. Among them, the ground microwave moisture tester includes a microwave moisture test nipple, the ground flow tester includes a flow test nipple, and the ground wellhead device includes a wellhead sealing device and a wellhead tee. The microwave moisture test nipple, the flow test nipple, the wellhead sealing device, and the wellhead tee all belong to the ground test module. The microwave moisture test nipple and the flow test nipple are connected to the ground controller via RS485, and the wellhead sealing device is connected to the ground controller via a cable. The structure of the intelligent production allocation system based on microwave water content measurement also includes multiple packers, multiple downhole testers, pumps, cable conversion devices and plugs. The multiple packers include the first layer packers to the nth layer packers, and the multiple downhole testers include the first layer downhole testers to the nth layer downhole testers. Each oil layer is provided with a packer and a downhole tester. The downhole accessory tools in the downhole production separation test module include pumps, cable conversion devices and plugs. Among them, the pump, the cable conversion device, the first layer packer, the first layer downhole tester, the second layer packer, the second layer downhole tester until the nth layer packer, the nth layer downhole tester and the plugs are all connected through oil pipes. The pump, the cable conversion device, the first layer packer to the nth layer packer, the first layer downhole tester to the nth layer downhole tester and the plugs all belong to the downhole production separation test module.

[0045] The intelligent production allocation system based on microwave moisture content measurement of the embodiment of the present invention includes a ground control module, a ground test module and a downhole production test module; the ground control module is connected to the ground test module and the downhole production test module, and is used to open the downhole tester of each oil layer in the downhole production test module; the ground test module is used to measure the flow rate of the downhole produced fluid in each oil layer in real time when the oil is produced layer by layer, and to measure the water content of the downhole produced fluid in each oil layer in real time by using a microwave method; the ground control module is also used to determine the oil nozzle opening adjustment instruction of each downhole tester according to the water content and the flow rate, and adjust the oil nozzle switch of each downhole tester according to the oil nozzle opening adjustment instruction; the downhole production test module is used to produce oil in each oil layer through the adjusted oil nozzle switch. In this way, the ground test module uses the microwave method to measure the water content of each oil layer in real time, and can collect the precise water content corresponding to each oil layer. Through the precise water content and flow rate of each oil layer, different oil nozzle opening adjustment instructions can be determined for each downhole tester, and the oil nozzle switch of each downhole tester can be adjusted differently to better exploit oil in each oil layer, so that the water content measurement has higher accuracy and higher stability.

[0046] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

[0047] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An intelligent production allocation system based on microwave moisture content measurement, characterized in that: It includes ground control module, ground test module and underground production test module; The ground control module is connected to both the ground test module and the downhole separation and production test module, and is used to turn on the downhole tester of each oil layer in the downhole separation and production test module; The ground testing module is used to measure the flow rate of the produced fluid in each oil layer in real time when the oil is produced layer by layer, and to measure the water content of the produced fluid in each oil layer in real time by using a microwave method; The ground control module is further used to determine the nozzle opening adjustment instruction of each downhole tester according to the water content and the flow rate, and adjust the nozzle switch of each downhole tester according to the nozzle opening adjustment instruction; The downhole extraction test module is used to extract the oil from each oil layer through the adjusted oil nozzle switch.

2. The intelligent production allocation system based on microwave moisture content measurement according to claim 1 is characterized in that: The ground test module includes a ground microwave moisture tester, a ground flow tester and a ground wellhead device; The ground microwave water content tester is used to measure the water content of the produced fluid in each oil layer in real time by using the microwave method when the oil is produced layer by layer; The surface flow tester is used to measure the flow rate of the downhole produced fluid in each oil layer in real time; The surface wellhead device is used to connect to the surface control module via a cable.

3. The intelligent production allocation system based on microwave moisture content measurement according to claim 1 is characterized in that: The ground control module includes a ground controller and a ground host computer. The ground controller is connected to the ground host computer, the ground test module and the downhole extraction test module.

4. The intelligent production allocation system based on microwave moisture content measurement according to claim 3 is characterized in that: The ground host computer is used to operate the ground controller; The ground controller is specifically used to determine that the corresponding oil nozzle opening adjustment instruction of the downhole tester is an increase instruction when the water content is less than a preset value and the flow rate is greater than the upper boundary of a preset range, and increase the oil nozzle switch according to the increase instruction; When the water content is less than the preset value and the flow rate is less than the lower boundary of the preset range, determining that the corresponding oil nozzle opening adjustment instruction of the downhole tester is the increase instruction, and increasing the oil nozzle switch according to the increase instruction; When the water content is greater than the preset value and the flow rate is less than the lower boundary of the preset range, determining that the corresponding oil nozzle opening adjustment instruction of the downhole tester is a decrease instruction, and decreasing the oil nozzle switch according to the decrease instruction; When the water content is greater than the preset value and the flow rate is greater than the upper boundary of the preset range, the corresponding nozzle opening adjustment instruction of the downhole tester is determined to be the reduction instruction, and the nozzle switch is reduced according to the reduction instruction.

5. The intelligent production allocation system based on microwave moisture content measurement according to claim 1 is characterized in that: The downhole production test module includes multiple packers, multiple downhole testers and downhole accessory tools. Each oil layer is provided with a packer and a downhole tester. The packer and the downhole tester in each oil layer are connected through an oil pipe.

6. The intelligent production allocation system based on microwave moisture content measurement according to claim 5 is characterized in that: Each downhole tester is used to test the pressure and temperature of each oil layer.

7. The intelligent production allocation system based on microwave moisture content measurement according to claim 2 is characterized in that: The ground test module also includes a data storage submodule, and the data storage submodule is used to store the water content and the flow rate.

8. The intelligent production allocation system based on microwave moisture content measurement according to claim 1 is characterized in that: The ground test module is powered by a battery or a DC power supply output by the ground control module.

9. The intelligent production allocation system based on microwave moisture content measurement according to claim 1 is characterized in that: The ground control module and the ground test module are connected via RS485 communication mode.

10. The intelligent production allocation system based on microwave moisture content measurement according to claim 1 is characterized in that: The ground control module is connected to the downhole extraction and testing module via a cable.

Images