CN110593827A - Layered water injection method - Google Patents
Layered water injection method Download PDFInfo
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- CN110593827A CN110593827A CN201910997092.8A CN201910997092A CN110593827A CN 110593827 A CN110593827 A CN 110593827A CN 201910997092 A CN201910997092 A CN 201910997092A CN 110593827 A CN110593827 A CN 110593827A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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Abstract
The invention discloses a layered water injection method, which relates to the technical field of layered injection of an oil field water injection well, and is characterized in that a central monitoring and control module, a wellhead wireless signal transceiver module, a centralized underground wireless signal transceiver module and an underground intelligent injection allocation module are utilized, four modules are utilized to realize the monitoring of production data of a plurality of layered water injection wells on the ground and control the injection quantity of a plurality of layers, so that an intelligent layered water injection method is realized; through adopting from the well head to the wireless transmission mode in the pit, utilize wireless signal transmission distance such as electromagnetic wave, pressure wave far away, drop into advantages such as low, the security height, saved a large amount of cables to solve traditional water injection mode and because use a large amount of cables and lead to play down in-process cable damage on highly deviated well and horizontal well, reduce the problem of construction success rate.
Description
Technical Field
The invention relates to the technical field of layered injection of an oil field water injection well, in particular to a layered water injection method.
Background
Oilfield flooding is a measure of using a flooding well to inject water into an oil reservoir to supplement and maintain the pressure of the oil reservoir. After the oil field is put into development, along with the increase of the exploitation time, the energy of an oil layer is continuously consumed, so that the pressure of the oil layer is continuously reduced, underground crude oil is greatly degassed, the viscosity is increased, the yield of the oil well is greatly reduced, even the injection and production stop can be realized, and a large amount of underground residual dead oil cannot be extracted. In order to make up for the underground deficit caused by the production of crude oil, maintain or improve the pressure of an oil layer, realize high and stable yield of an oil field and obtain higher recovery ratio, water must be injected into the oil field.
The oilfield water injection is a dynamic change process, so that the injection well needs to be measured and adjusted periodically to enable each layer of the injection well to meet the injection allocation requirement, and the measurement and adjustment workload and difficulty under the existing water injection situation are large, so that the popularization and application of the subdivision water injection technology are restricted. The existing separate injection well is mainly measured and adjusted by three modes, which are respectively characterized in that: (1) the throwing and fishing water nozzle type measuring and adjusting method is characterized in that a water nozzle is placed on an injection core, and water quantity adjustment is realized by utilizing a throwing and fishing core of steel wire lowering equipment, so that the measuring and adjusting method has the defects of low measuring and adjusting precision, low efficiency, low success rate, few layering and the like; (2) the measuring and regulating integrated measuring and regulating method is characterized in that a water nozzle is preset on a measuring and regulating integrated water distributor, water injection states are detected in real time by using a measuring and regulating device which is arranged below a steel wire cable, and water quantity regulation is realized by using the opening degree of a mechanical arm to rotate the water nozzle, so that the measuring and regulating precision is high, the effect is higher, and the number of layers is large, but the throwing and fishing measuring and regulating can not be realized for highly deviated wells and horizontal wells; (3) the wired transmission intelligent well completion type measuring and adjusting method is characterized in that a water nozzle and a test sensor are preset on an intelligent water distributor, electric energy supply, water injection state real-time detection and water injection quantity adjustment are carried out by utilizing cables, and the problem that the construction success rate is reduced due to cable damage in the tripping process on a highly deviated well and a horizontal well exists due to the fact that a large number of cables are used.
Disclosure of Invention
The invention provides a layered water injection method, aiming at solving the problems that the existing oilfield layered water injection method is low in precision, efficiency and success rate and few in number of layers, and a partially optimized layered water injection mode cannot be applied to highly deviated wells and horizontal wells, so that the technical effect of efficiently measuring and controlling a separate injection well is achieved.
The technical scheme of the invention is as follows:
according to an aspect of the present invention, there is provided a method of stratified water injection, comprising:
the central monitoring and control module compiles a control instruction and carries out wireless coding to form a ground control infinite signal;
the central monitoring and control module sends a ground control infinite signal to the wellhead wireless signal transceiving module;
the wellhead wireless signal receiving and transmitting module receives the ground control infinite signal and converts the ground control infinite signal into a control code for controlling a wellhead to transmit a wireless signal to the underground to form an analog signal;
the wellhead wireless signal transceiving module sends the analog signal to a centralized underground wireless signal transceiving module;
the centralized underground wireless signal transceiver module receives the analog signal, and performs noise reduction, amplification and analysis on the analog signal and converts the analog signal into a digital control instruction;
the centralized underground wireless signal transceiver module transmits the generated digital control instruction to an underground intelligent injection allocation module;
the underground intelligent injection allocation module receives the digital control instruction and sends the digital control instruction to each layer of intelligent injection device to finely adjust the injection amount of each device;
after each layer of intelligent injection device finely adjusts the injection amount, the underground intelligent injection allocation module transmits production detection data to the centralized underground wireless signal transceiver module;
the centralized underground wireless signal transceiver module receives the production detection data, summarizes and stores the production detection data, and converts the production detection data into underground detection wireless analog signals at regular time;
the centralized underground wireless signal transceiver module transmits the generated underground detection wireless analog signal to the wellhead wireless signal transceiver module;
the wellhead wireless signal transceiver module receives the underground detection wireless analog signal, and filters and amplifies the underground detection wireless analog signal to convert the underground detection wireless analog signal into a digital signal;
the wellhead wireless signal transceiving module transmits the generated digital signal to the central monitoring and control module;
and the central monitoring and control module receives the digital signal, analyzes the digital signal, displays the underground detection result on the central monitoring and control module, and stores the data.
Specifically, the analog signal generated by the wellhead wireless signal transceiver module is an electromagnetic wave or a pressure wave, and the analog signal reaches the centralized downhole wireless signal transceiver module along the pipe column or the fluid in the pipe column.
Specifically, the underground detection wireless analog signal converted by the centralized underground wireless signal transceiver module is an electromagnetic wave or a pressure wave, and the underground detection wireless analog signal is transmitted to the ground in the pipe column or the fluid in the pipe column.
Specifically, the wellhead wireless signal transceiver module supplies power to the wellhead wireless signal transceiver module by utilizing a wellhead power supply, and the wellhead power supply supplies power to the wellhead wireless signal transceiver module through a solar power generation device or an electric wire;
the centralized underground wireless signal transceiver module and the underground intelligent injection allocation module supply power to the underground wireless signal transceiver module and the underground intelligent injection allocation module by using an underground power supply, and the underground power supply adopts an electric storage battery or an underground power generation device to supply power to the centralized underground wireless signal transceiver module or the underground intelligent injection allocation module.
The invention also provides a layered water injection control device, which comprises:
central authorities keep watch on and control module, well head wireless signal transceiver module, centralized wireless signal transceiver module in the pit, intelligent injection allocation module in the pit, wherein:
the central monitoring and control module is used for sending a ground control wireless signal to a wellhead in the process of transmitting the signal from the ground to the underground; the system comprises a wireless communication module, a wireless communication module and a wireless communication module, wherein the wireless communication module is used for receiving a surface detection wireless signal transmitted from a wellhead in the process of transmitting the signal from the underground to the surface;
the wellhead wireless signal transceiver module is used for receiving the ground control wireless signal transmitted from the central monitoring and control module and generating a corresponding analog signal to send to the underground in the process of transmitting the signal from the ground to the underground; the underground wireless monitoring and controlling system is used for receiving a detection wireless analog signal transmitted from the underground in the process of transmitting the signal from the underground to the ground, converting the detection wireless analog signal into a ground detection wireless signal and transmitting the ground detection wireless signal to the central monitoring and controlling module;
the centralized underground wireless signal transceiver module is used for receiving the analog signal transmitted from the wellhead wireless signal transceiver module and converting the analog signal into a digital control command to be transmitted underground in the process of transmitting the signal from the ground to the underground; the underground production detection system comprises a wellhead wireless signal transceiver module, a data processing module and a data processing module, wherein the wellhead wireless signal transceiver module is used for receiving production detection data transmitted from the underground during the process of transmitting signals from the underground to the ground, converting the data into underground detection wireless analog signals and transmitting the underground detection wireless analog signals to the wellhead wireless signal transceiver module;
the underground intelligent injection allocation module is used for receiving a control command transmitted from the centralized underground wireless signal transceiver module in the process of transmitting signals from the ground to the underground and finely adjusting the injection amount by using the command; and the system is used for collecting production detection data and transmitting the data to the centralized underground wireless signal transceiver module in the process of transmitting signals from the underground to the ground.
Specifically, the central monitoring and control module comprises a data display and instruction control unit, a data coding and analysis unit and an indoor ground wireless transceiving unit, wherein:
the data display and instruction control unit is used for compiling a control instruction in the process of transmitting a signal from the ground to the underground; the underground detection device is used for displaying the underground detection result and storing data in the process of transmitting the signal from the underground to the ground;
the data coding and analyzing unit is used for carrying out primary wireless coding on the control command in the process of transmitting the signal from the ground to the underground; the indoor ground wireless transceiver unit is used for receiving the digital signals transmitted by the indoor ground wireless transceiver unit;
the indoor ground wireless receiving and transmitting unit is used for receiving the wireless codes generated by the data coding and analyzing unit and sending ground control wireless signals to the wellhead wireless signal receiving and transmitting module in the process of transmitting signals from the ground to the underground; and the system is used for receiving the digital signal sent by the wellhead wireless signal transceiver module in the process of transmitting the signal from the underground to the ground.
Specifically, the wellhead wireless signal transceiver module comprises a ground wireless data transceiver unit, a ground-underground data conversion unit, an underground data control and transceiver unit and a wellhead power supply, wherein:
the surface wireless data transceiver unit is used for receiving wireless signals transmitted from the central monitoring and control module in the process of transmitting the signals from the surface to the underground; the system is used for receiving the digital signal sent by the surface-downhole data conversion unit and sending the digital signal to the central monitoring and control module in the process of transmitting the signal from the downhole to the surface;
the ground-underground data conversion unit is used for forming a control code for controlling a wellhead to generate a wireless signal underground through the wireless signal received by the ground wireless data receiving and transmitting unit in the process of transmitting the signal from the ground to the underground; in the process of transmitting signals from the underground to the ground, the data control and transceiving unit is used for converting analog signals after filtering and amplification of the data control and transceiving unit into digital signals and transmitting the digital signals to the ground wireless data transceiving unit;
the underground data control and transceiving unit is used for generating corresponding analog signals through control codes formed by the ground-underground data conversion unit in the process of transmitting signals from the ground to the underground and transmitting the analog signals to the centralized underground wireless signal transceiving module; the underground wireless signal transceiver module is used for receiving underground detection wireless analog signals sent by the centralized underground wireless signal transceiver module and filtering and amplifying the analog signals in the process of transmitting the signals from underground to the ground;
and the wellhead power supply is used for supplying power to the wellhead wireless signal transceiving module.
Specifically, the centralized downhole wireless signal transceiver module comprises a downhole data receiving and decoding unit, a data coding and signal control sending unit, a data storage and timing sending control unit, a docking intelligent injection device interface unit and a downhole power supply, wherein:
the underground data receiving and decoding unit is used for receiving the analog signal sent from the wellhead wireless signal receiving and sending module and carrying out noise reduction, amplification and analysis on the analog signal in the process of transmitting the signal from the ground to the underground; the underground detection wireless signal transceiver module is used for converting data into underground detection wireless analog signals and transmitting the underground detection wireless analog signals to the wellhead wireless signal transceiver module in the process of transmitting the signals from the underground to the ground;
the data coding and signal control sending unit is used for converting the analog signals subjected to noise reduction, amplification and analysis into digital control instructions in the process of transmitting the signals from the ground to the underground; the data coding is used for awakening in the process of transmitting the signal from the underground to the surface;
the data storage and timing transmission control unit is used for storing the data codes and the digital control instructions converted by the signal control transmission unit in the process of transmitting signals from the ground to the underground; the underground production data is transmitted from the interface unit of the butt joint intelligent injection device, and is sent to the data coding and signal control sending unit in a timing mode;
the interface unit of the butt joint intelligent injection device is used for sending a control command to the underground intelligent injection allocation module in the process of transmitting a signal from the ground to the underground; the underground intelligent injection allocation module is used for receiving underground production data sent by the underground intelligent injection allocation module and transmitting the data to the data storage and timing sending control unit in the process of transmitting signals from underground to the ground;
the underground power supply is used for supplying power to the centralized underground wireless signal transceiver module or the underground intelligent injection allocation module.
Specifically, the underground intelligent injection allocation module comprises a butt joint concentrated transceiver module interface unit and an intelligent injection device, wherein:
the interface unit of the butt joint centralized transceiver module is used for receiving a control command sent by the centralized underground wireless signal transceiver module and sending the control command to each intelligent injection device in the process of transmitting signals from the ground to the underground; the system comprises a centralized underground wireless signal transceiver module, a wireless signal transceiver module and a data processing module, wherein the centralized underground wireless signal transceiver module is used for receiving underground production data acquired by the intelligent injection device and transmitting the data to the centralized underground wireless signal transceiver module in the process of transmitting signals from underground to the ground;
the intelligent injection device is used for adjusting the water quantity of a plurality of layers in the well and collecting underground production data.
The method has the beneficial effects that:
the invention utilizes a central monitoring and control module, a wellhead wireless signal transceiver module, a centralized underground wireless signal transceiver module and an underground intelligent injection allocation module, wherein the four modules are used for monitoring the production data of the multi-port layered water injection well on the ground and controlling the injection quantity of a plurality of layers, thereby realizing the intelligent layered water injection method.
Secondly, the invention adopts a wireless transmission mode from the wellhead to the underground, and utilizes the advantages of long transmission distance, low investment, high safety and the like of wireless signals such as electromagnetic waves, pressure waves and the like to omit a large number of cables, thereby solving the problems of cable damage and construction success rate reduction in the lifting and lowering processes of a highly-deviated well and a horizontal well caused by the use of a large number of cables in the traditional water injection mode.
Thirdly, the invention realizes the transmission of production parameters from the underground to the wellhead and the transmission of control instructions from the wellhead to the underground by utilizing the mutually corresponding coding, controlling, sending, receiving and decoding devices and the matched power supply which are arranged between the underground and the wellhead, and realizes the distributed acquisition, the centralized storage, the timed sending and the packed sending of underground multi-layer production data, thereby effectively enhancing the precision, the efficiency and the success rate of oilfield water injection.
Fourthly, the invention adopts two carrier mixed transmission modes of interlayer wired transmission and underground and ground wireless transmission to realize data bidirectional transmission, reduces signal attenuation by utilizing the interlayer wired transmission and reduces cable damage by utilizing the underground and ground wireless transmission, thereby realizing remote measurement and control of production parameters and measured and adjusted data of the separate injection well.
Drawings
FIG. 1 is a system configuration diagram of the present invention;
FIG. 2 is a flow chart of the present invention for uploading test data;
FIG. 3 is a control command downloading flow chart of the present invention;
in the figure, 10 is a central monitoring and control module, 101 is a data display and instruction control unit, 102 is a data coding and analysis unit, 103 is an indoor ground wireless transceiving unit, 20 is a wellhead wireless signal transceiving module, 201 is a ground wireless data transceiving unit, 202 is a ground-downhole data conversion unit, 203 is a downhole data control and transceiving unit, 204 is a wellhead power supply, 30 is a centralized downhole wireless signal transceiving module, 301 is a downhole data receiving and decoding unit, 302 is a data coding and signal control transmitting unit, 303 is a data storage and timing transmission control unit, 304 is a butt joint intelligent injection device interface unit, 305 is a downhole power supply, 40 is a downhole intelligent injection module, 401 is a butt joint centralized transceiving module interface unit, and 402 is an intelligent injection device.
Detailed Description
The embodiment of the invention provides a layered water injection method, and aims to solve the problems that the existing oilfield layered water injection method is low in precision, efficiency and success rate and few in number of layers, and a partially optimized layered water injection mode cannot be applied to highly deviated wells and horizontal wells.
The production data of the multi-port layered water injection well is monitored in the ground by utilizing the central monitoring and control module 10, the wellhead wireless signal transceiver module 20, the centralized underground wireless signal transceiver module 30 and the underground intelligent injection allocation module 40, and the injection quantity of a plurality of layers is controlled, so that the intelligent layered water injection method is realized.
Through adopting from the well head to the wireless transmission mode in the pit, utilize wireless signal transmission distance such as electromagnetic wave, pressure wave far away, drop into advantages such as low, the security height, saved a large amount of cables to solve traditional water injection mode and because use a large amount of cables and lead to play down in-process cable damage on highly deviated well and horizontal well, reduce the problem of construction success rate.
By utilizing the mutually corresponding coding, controlling, sending, receiving and decoding devices and the matched power supply which are arranged underground and at the wellhead, the transmission of the production parameters from the underground to the wellhead and the transmission of the control instructions from the wellhead to the underground are realized, and the underground multi-layer production data is distributed, collected, stored, sent at regular time and sent in a packaging manner, so that the precision, the efficiency and the success rate of the oilfield water injection are effectively enhanced.
The data bidirectional transmission is realized by adopting two carrier wave mixed transmission modes of interlayer wired transmission and underground and ground wireless transmission, the attenuation of signals is reduced by utilizing the interlayer wired transmission, and the damage of cables is reduced by utilizing the underground and ground wireless transmission, so that the remote measurement and control of the production parameters and the measured and modulated data of the injection well can be realized.
In order to better understand the technical scheme of the invention, the following detailed description is made on the technical scheme of the invention with reference to the accompanying drawings and the embodiments, optionally, the embodiment can realize the monitoring of production data of a plurality of layered water injection wells on the ground and control the injection amount of a plurality of layers, thereby realizing an intelligent layered water injection method.
Wherein:
step 11, the data display and command control unit 101 of the central monitoring and control module 10 is used to generate control commands.
Step 12, the data encoding and analyzing unit 102 performs a wireless encoding on the control command, and then sends a ground control wireless signal by using the indoor ground wireless transceiver unit 103.
Step 13, after the signal is received by the ground wireless data transceiver unit 201 of the wellhead wireless signal transceiver module 20, a control code for controlling the wellhead to send the wireless signal to the underground is formed through the ground-underground data conversion unit 202.
In step 14, the downhole data control and transceiver unit 203 generates an analog signal and sends the analog signal to the centralized downhole wireless signal transceiver module 30.
Step 15, the downhole data receiving and analyzing unit 301 performs noise reduction and amplification analysis on the received analog signal, converts the analog signal into a digital control instruction, stores the digital control instruction in the data storage and timing transmission control unit 303, and transmits the control instruction to the downhole intelligent injection allocation module 40 by using a wired transmission mode through the docking intelligent injection interface unit 304.
Step 16, after receiving the control instruction data, the interface unit 401 of the docking centralized transceiver module sends the control instruction data to the intelligent injection devices 402 of each layer in a wired manner to finely adjust the injection amount, and the staff controls the water amount adjustment of the multiple layers of the multi-mouth well by using the central monitoring and control module 10.
Step 17, after the injection amount is finely adjusted by the intelligent injection devices 402 of each layer, the intelligent injection devices 402 of each layer transmit the production detection data to the centralized downhole wireless signal transceiver module 30 through the interface unit 401 of the docking centralized transceiver module and the interface unit 304 of the docking intelligent injection device.
Step 18, each layer of detection data is summarized and stored on the data storage and timing transmission control unit 303, the downhole data coding and control transmission unit 301 is awakened at regular time according to a certain rule, the data is converted into downhole detection wireless analog signals at regular time and is transmitted to the ground, the downhole detection wireless analog signals are received, filtered and amplified by the downhole data control and transmission unit 203, the downhole detection wireless analog signals are converted into digital signals by the downhole-ground data conversion unit 203, and the ground detection wireless signals are transmitted by the ground wireless data transmission unit 201.
And 19, after receiving the signal, the indoor ground wireless transceiver unit 103 analyzes the signal by using the data coding and analyzing unit 102, displays the underground detection result on the data display and instruction control unit 101, and stores the data.
Specifically, the analog signal generated by the downhole data control and transceiver unit 203 is an electromagnetic wave or a pressure wave, and the analog signal reaches the centralized downhole wireless signal transceiver module 30 along the pipe string or the fluid in the pipe string.
Specifically, the downhole data encoding and control sending unit 301 converts the downhole detection wireless analog signal into an electromagnetic wave or a pressure wave, and the downhole detection wireless analog signal is transmitted to the ground in the pipe column or the fluid in the pipe column.
Specifically, the wellhead wireless signal transceiver module 20 supplies power to the wellhead power supply 204 by using the wellhead power supply 204, and the wellhead power supply 204 supplies power to the wellhead wireless signal transceiver module 20 through a solar power generation device or an electric wire.
The centralized downhole wireless signal transceiver module 30 and the downhole intelligent injection allocation module 40 use a downhole power supply 305 to supply power to the downhole wireless signal transceiver module 30 and the downhole intelligent injection allocation module 40, and the downhole power supply 305 uses a storage battery or a downhole power generation device to supply power to the centralized downhole wireless signal transceiver module 30 and the downhole intelligent injection allocation module 40.
The embodiment of the present invention further provides a layered water injection control device, as shown in fig. 1, the layered water injection control device includes a central monitoring and control module 10, a wellhead wireless signal transceiver module 20, a centralized downhole wireless signal transceiver module 30, and a downhole intelligent injection allocation module 40, wherein:
the central monitoring and control module 10 is used for sending a ground control wireless signal to a wellhead in the process of transmitting the signal from the ground to the underground; the device is used for receiving a surface detection wireless signal transmitted from a wellhead in the process of transmitting the signal from the underground to the surface.
The wellhead wireless signal transceiver module 20 is used for receiving the surface control wireless signal transmitted from the central monitoring and control module 10 in the process of transmitting the signal from the surface to the underground, generating a corresponding analog signal and transmitting the analog signal to the underground; during the process of transmitting signals from the underground to the surface, the system is used for receiving detection wireless analog signals transmitted from the underground, converting the detection wireless analog signals into surface detection wireless signals and transmitting the surface detection wireless signals to the central monitoring and control module 10.
The centralized downhole wireless signal transceiver module 30 is configured to receive an analog signal transmitted from the wellhead wireless signal transceiver module 20, convert the analog signal into a digital control command, and send the digital control command to the downhole in the process of transmitting the signal from the ground to the downhole; and in the process of transmitting signals from the underground to the surface, the wireless signal transceiver module is used for receiving production detection data transmitted from the underground, converting the data into underground detection wireless analog signals and transmitting the underground detection wireless analog signals to the wellhead wireless signal transceiver module 20.
The downhole intelligent injection allocation module 40 is used for receiving a control command transmitted from the centralized downhole wireless signal transceiver module 30 in the process of transmitting signals from the ground to the downhole and finely adjusting the injection amount by using the command; during the process of transmitting signals from the underground to the surface, the wireless transceiver module is used for collecting production detection data and transmitting the data to the centralized underground wireless signal transceiver module 30.
Specifically, the central monitoring and control module 10 includes a data display and command control unit 101, a data encoding and analyzing unit 102, and an indoor ground wireless transceiving unit 103, wherein:
the data display and instruction control unit 101 is used for compiling a control instruction in the process of transmitting a signal from the ground to the underground; the device is used for displaying the detection result in the well and storing the data in the process of transmitting the signal from the well to the surface.
The data coding and analyzing unit 102 is configured to perform primary wireless coding on the control command in the process of transmitting the signal from the ground to the downhole; the indoor ground transceiver unit 103 is used for analyzing the digital signals received during the process of transmitting the signals from the underground to the ground.
The indoor ground wireless transceiver unit 103 is configured to receive the wireless code generated by the data coding and analyzing unit 102 and send a ground control wireless signal to the wellhead wireless signal transceiver module 20 in the process of transmitting a signal from the ground to the downhole; the system is used for receiving digital signals sent by the wellhead wireless signal transceiver module 20 in the process of transmitting signals from the underground to the surface.
Specifically, the wellhead wireless signal transceiver module 20 includes a surface wireless data transceiver unit 201, a surface-downhole data conversion unit 202, a downhole data control and transceiver unit 203, and a wellhead power supply 204, wherein:
the surface wireless data transceiver unit 201 is used for receiving the wireless signal transmitted from the central monitoring and control module 10 in the process of transmitting the signal from the surface to the underground; the system is used for receiving the digital signal sent by the surface-downhole data conversion unit 202 and sending the digital signal to the central monitoring and control module 10 during the process of transmitting the signal from the downhole to the surface.
The surface-downhole data conversion unit 202 is configured to form a control code for controlling a wellhead to generate a wireless signal downhole through the wireless signal received by the surface wireless data transceiver unit 201 in a process of transmitting a signal from the surface to the downhole; and in the process of transmitting the signal from the underground to the surface, the data control and transceiver unit 203 is configured to convert the analog signal after filtering and amplifying into a digital signal, and send the digital signal to the surface wireless data transceiver unit 201.
The downhole data control and transceiving unit 203 is configured to generate a corresponding analog signal through the control code formed by the surface-downhole data converting unit 202 in a process of transmitting a signal from the surface to the downhole, and send the analog signal to the centralized downhole wireless signal transceiving module 30; and in the process of transmitting the signal from the underground to the ground, the underground wireless signal transceiver module is configured to receive the underground detection wireless analog signal sent by the centralized underground wireless signal transceiver module 30, and filter and amplify the analog signal.
The wellhead power supply 204 is used for supplying power to the wellhead wireless signal transceiver module 20.
Specifically, the centralized downhole wireless signal transceiving module 30 includes a downhole data receiving and decoding unit 301, a data encoding and signal control transmitting unit 302, a data storage and timing transmitting control unit 303, a docking intelligent injection device interface unit 304, and a downhole power supply 305, wherein:
the downhole data receiving and decoding unit 301 is configured to receive the analog signal sent from the wellhead wireless signal transceiver module 20, and perform noise reduction, amplification and analysis on the analog signal in the process of transmitting the signal from the ground to the downhole; during the process of transmitting signals from the underground to the surface, the wireless signal transceiver module is used for converting data into underground detection wireless analog signals and sending the signals to the wellhead wireless signal transceiver module 20.
The data coding and signal control sending unit 302 is configured to convert the analog signals subjected to noise reduction and amplification analysis into digital control instructions in the process of transmitting the signals from the ground to the downhole; and the data coding is used for awakening during the process of transmitting the signal from the underground to the surface.
The data storage and timing transmission control unit 303 is configured to store the digital control instruction converted by the data coding and signal control transmission unit 302 in the process of transmitting a signal from the ground to the downhole; the interface unit 304 is used for collecting and storing the downhole production data transmitted from the docking intelligent injection device interface unit 304 during the process of transmitting signals from the downhole to the surface, and the data is transmitted to the data coding and signal control transmitting unit 302 in a timing mode.
The docking intelligent injection device interface unit 304 is used for sending a control command to the downhole intelligent injection allocation module 40 in the process of transmitting signals from the ground to the downhole; and in the process of transmitting signals from the underground to the surface, the downhole intelligent injection allocation module 40 is used for receiving the underground production data sent by the downhole intelligent injection allocation module 40 and transmitting the data to the data storage and timing sending control unit 303.
The downhole power supply 305 is configured to supply power to the centralized downhole wireless signal transceiver module 30 or the downhole intelligent injection module 40.
Specifically, the downhole intelligent injection allocation module 40 includes a docking centralized transceiver module interface unit 401 and an intelligent injection device 402, wherein:
the interface unit 401 of the centralized docking transceiver module is configured to receive a control command sent from the centralized downhole wireless signal transceiver module 30 and send the control command to each of the intelligent injection devices 402 in the process of transmitting signals from the ground to the downhole; during the process of transmitting signals from the downhole to the surface, the downhole wireless signal transceiver module is used for receiving the downhole production data collected by the intelligent injection device 402 and sending the data to the centralized downhole wireless signal transceiver module 30.
The intelligent injection device 402 is used to adjust the water volume of multiple zones in the well and collect downhole production data.
Thus far, the present invention has been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein in view of the foregoing description.
It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disk, or the like.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. A layered water injection method is characterized by comprising the following steps:
the central monitoring and control module compiles a control instruction and carries out wireless coding to form a ground control infinite signal;
the central monitoring and control module sends a ground control infinite signal to the wellhead wireless signal transceiving module;
the wellhead wireless signal receiving and transmitting module receives the ground control infinite signal and converts the ground control infinite signal into a control code for controlling a wellhead to transmit a wireless signal to the underground to form an analog signal;
the wellhead wireless signal transceiving module sends the analog signal to a centralized underground wireless signal transceiving module;
the centralized underground wireless signal transceiver module receives the analog signal, and performs noise reduction, amplification and analysis on the analog signal and converts the analog signal into a digital control instruction;
the centralized underground wireless signal transceiver module transmits the generated digital control instruction to an underground intelligent injection allocation module;
the underground intelligent injection allocation module receives the digital control instruction and sends the digital control instruction to each layer of intelligent injection device to finely adjust the injection amount of each device;
after each layer of intelligent injection device finely adjusts the injection amount, the underground intelligent injection allocation module transmits production detection data to the centralized underground wireless signal transceiver module;
the centralized underground wireless signal transceiver module receives the production detection data, summarizes and stores the production detection data, and converts the production detection data into underground detection wireless analog signals at regular time;
the centralized underground wireless signal transceiver module transmits the generated underground detection wireless analog signal to the wellhead wireless signal transceiver module;
the wellhead wireless signal transceiver module receives the underground detection wireless analog signal, and filters and amplifies the underground detection wireless analog signal to convert the underground detection wireless analog signal into a digital signal;
the wellhead wireless signal transceiving module transmits the generated digital signal to the central monitoring and control module;
and the central monitoring and control module receives the digital signal, analyzes the digital signal, displays the underground detection result on the central monitoring and control module, and stores the data.
2. The method of stratified water injection as claimed in claim 1, comprising:
the analog signal generated by the wellhead wireless signal transceiver module is electromagnetic wave or pressure wave, and reaches the centralized underground wireless signal transceiver module along the pipe column or the fluid in the pipe column.
3. The method of stratified water injection as claimed in claim 1, comprising:
the underground detection wireless analog signals converted by the centralized underground wireless signal transceiver module are electromagnetic waves or pressure waves, and the underground detection wireless analog signals are transmitted to the ground in the pipe column or the fluid in the pipe column.
4. The method of stratified water injection as claimed in any one of claims 1 to 3, comprising:
the wellhead wireless signal receiving and transmitting module supplies power to the wellhead wireless signal receiving and transmitting module by utilizing a wellhead power supply, and the wellhead power supply supplies power to the wellhead wireless signal receiving and transmitting module through a solar power generation device or an electric wire;
the centralized underground wireless signal transceiver module and the underground intelligent injection allocation module supply power to the underground wireless signal transceiver module and the underground intelligent injection allocation module by using an underground power supply, and the underground power supply adopts an electric storage battery or an underground power generation device to supply power to the centralized underground wireless signal transceiver module or the underground intelligent injection allocation module.
5. A layered water injection control apparatus, comprising:
central authorities keep watch on and control module, well head wireless signal transceiver module, centralized wireless signal transceiver module in the pit, intelligent injection allocation module in the pit, wherein:
the central monitoring and control module is used for sending a ground control wireless signal to a wellhead in the process of transmitting the signal from the ground to the underground; the system comprises a wireless communication module, a wireless communication module and a wireless communication module, wherein the wireless communication module is used for receiving a surface detection wireless signal transmitted from a wellhead in the process of transmitting the signal from the underground to the surface;
the wellhead wireless signal transceiver module is used for receiving the ground control wireless signal transmitted from the central monitoring and control module and generating a corresponding analog signal to send to the underground in the process of transmitting the signal from the ground to the underground; the underground wireless monitoring and controlling system is used for receiving a detection wireless analog signal transmitted from the underground in the process of transmitting the signal from the underground to the ground, converting the detection wireless analog signal into a ground detection wireless signal and transmitting the ground detection wireless signal to the central monitoring and controlling module;
the centralized underground wireless signal transceiver module is used for receiving the analog signal transmitted from the wellhead wireless signal transceiver module and converting the analog signal into a digital control command to be transmitted underground in the process of transmitting the signal from the ground to the underground; the underground production detection system comprises a wellhead wireless signal transceiver module, a data processing module and a data processing module, wherein the wellhead wireless signal transceiver module is used for receiving production detection data transmitted from the underground during the process of transmitting signals from the underground to the ground, converting the data into underground detection wireless analog signals and transmitting the underground detection wireless analog signals to the wellhead wireless signal transceiver module;
the underground intelligent injection allocation module is used for receiving a control command transmitted from the centralized underground wireless signal transceiver module in the process of transmitting signals from the ground to the underground and finely adjusting the injection amount by using the command; and the system is used for collecting production detection data and transmitting the data to the centralized underground wireless signal transceiver module in the process of transmitting signals from the underground to the ground.
6. The separated layer water injection control device according to claim 5,
the central monitoring and control module comprises a data display and instruction control unit, a data coding and analysis unit and an indoor ground wireless transceiving unit, wherein:
the data display and instruction control unit is used for compiling a control instruction in the process of transmitting a signal from the ground to the underground; the underground detection device is used for displaying the underground detection result and storing data in the process of transmitting the signal from the underground to the ground;
the data coding and analyzing unit is used for carrying out primary wireless coding on the control command in the process of transmitting the signal from the ground to the underground; the indoor ground wireless transceiver unit is used for receiving the digital signals transmitted by the indoor ground wireless transceiver unit;
the indoor ground wireless receiving and transmitting unit is used for receiving the wireless codes generated by the data coding and analyzing unit and sending ground control wireless signals to the wellhead wireless signal receiving and transmitting module in the process of transmitting signals from the ground to the underground; and the system is used for receiving the digital signal sent by the wellhead wireless signal transceiver module in the process of transmitting the signal from the underground to the ground.
7. The separated layer water injection control device according to claim 5,
the wellhead wireless signal transceiver module comprises a ground wireless data transceiver unit, a ground-underground data conversion unit, an underground data control and transceiver unit and a wellhead power supply, wherein:
the surface wireless data transceiver unit is used for receiving wireless signals transmitted from the central monitoring and control module in the process of transmitting the signals from the surface to the underground; the system is used for receiving the digital signal sent by the surface-downhole data conversion unit and sending the digital signal to the central monitoring and control module in the process of transmitting the signal from the downhole to the surface;
the ground-underground data conversion unit is used for forming a control code for controlling a wellhead to generate a wireless signal underground through the wireless signal received by the ground wireless data receiving and transmitting unit in the process of transmitting the signal from the ground to the underground; in the process of transmitting signals from the underground to the ground, the data control and transceiving unit is used for converting analog signals after filtering and amplification of the data control and transceiving unit into digital signals and transmitting the digital signals to the ground wireless data transceiving unit;
the underground data control and transceiving unit is used for generating corresponding analog signals through control codes formed by the ground-underground data conversion unit in the process of transmitting signals from the ground to the underground and transmitting the analog signals to the centralized underground wireless signal transceiving module; the underground wireless signal transceiver module is used for receiving underground detection wireless analog signals sent by the centralized underground wireless signal transceiver module and filtering and amplifying the analog signals in the process of transmitting the signals from underground to the ground;
and the wellhead power supply is used for supplying power to the wellhead wireless signal transceiving module.
8. The separated layer water injection control device according to claim 5,
the centralized underground wireless signal transceiving module comprises an underground data receiving and decoding unit, a data coding and signal control transmitting unit, a data storage and timing transmitting control unit, a butt joint intelligent injection device interface unit and an underground power supply, wherein:
the underground data receiving and decoding unit is used for receiving the analog signal sent from the wellhead wireless signal receiving and sending module and carrying out noise reduction, amplification and analysis on the analog signal in the process of transmitting the signal from the ground to the underground; the underground detection wireless signal transceiver module is used for converting data into underground detection wireless analog signals and transmitting the underground detection wireless analog signals to the wellhead wireless signal transceiver module in the process of transmitting the signals from the underground to the ground;
the data coding and signal control sending unit is used for converting the analog signals subjected to noise reduction, amplification and analysis into digital control instructions in the process of transmitting the signals from the ground to the underground; the data coding is used for awakening in the process of transmitting the signal from the underground to the surface;
the data storage and timing transmission control unit is used for storing the data codes and the digital control instructions converted by the signal control transmission unit in the process of transmitting signals from the ground to the underground; the underground production data is transmitted from the interface unit of the butt joint intelligent injection device, and is sent to the data coding and signal control sending unit in a timing mode;
the interface unit of the butt joint intelligent injection device is used for sending a control command to the underground intelligent injection allocation module in the process of transmitting a signal from the ground to the underground; the underground intelligent injection allocation module is used for receiving underground production data sent by the underground intelligent injection allocation module and transmitting the data to the data storage and timing sending control unit in the process of transmitting signals from underground to the ground;
the underground power supply is used for supplying power to the centralized underground wireless signal transceiver module or the underground intelligent injection allocation module.
9. The separated layer water injection control device according to claim 5,
the underground intelligent injection allocation module comprises a butt joint concentrated receiving and transmitting module interface unit and an intelligent injection device, wherein:
the interface unit of the butt joint centralized transceiver module is used for receiving a control command sent by the centralized underground wireless signal transceiver module and sending the control command to each intelligent injection device in the process of transmitting signals from the ground to the underground; the system comprises a centralized underground wireless signal transceiver module, a wireless signal transceiver module and a data processing module, wherein the centralized underground wireless signal transceiver module is used for receiving underground production data acquired by the intelligent injection device and transmitting the data to the centralized underground wireless signal transceiver module in the process of transmitting signals from underground to the ground;
the intelligent injection device is used for adjusting the water quantity of a plurality of layers in the well and collecting underground production data.
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Application publication date: 20191220 |