CN116752935A - Ground control device for high-speed pulse communication and regulation and control method thereof - Google Patents
Ground control device for high-speed pulse communication and regulation and control method thereof Download PDFInfo
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- CN116752935A CN116752935A CN202311061823.0A CN202311061823A CN116752935A CN 116752935 A CN116752935 A CN 116752935A CN 202311061823 A CN202311061823 A CN 202311061823A CN 116752935 A CN116752935 A CN 116752935A
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- 230000006854 communication Effects 0.000 title claims abstract description 56
- 238000004891 communication Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 155
- 238000002347 injection Methods 0.000 claims abstract description 92
- 239000007924 injection Substances 0.000 claims abstract description 92
- 230000001105 regulatory effect Effects 0.000 claims description 58
- 230000005540 biological transmission Effects 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 230000001276 controlling effect Effects 0.000 claims description 14
- 239000002609 medium Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000012736 aqueous medium Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
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- 230000008859 change Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/16—Control means therefor being outside the borehole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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Abstract
The invention relates to a ground control device for high-speed pulse communication and a regulation and control method thereof, wherein the ground control device comprises a flow regulation component and a quick code-transmitting component, one end of the quick code-transmitting component is connected with one end of the flow regulation component in series, the other end of the quick code-transmitting component is connected with a water injection pipeline, the other end of the flow regulation component is connected with an underground water distributor in series through a water injection pipeline, a main control board of the ground control device is electrically connected with the quick code-transmitting component and the flow regulation component, the main control board continuously opens and closes the quick code-transmitting component to enable high-low variable pressure waveforms in the water injection pipeline, the underground water distributor detects the variable pressure waveforms in the water injection pipeline, and pressure pulse communication between the underground water distributor and the ground control device is realized through pressure codes generated by the pressure waveforms. The invention has the advantages that the rapid code sending function is added, the main control board regulates and controls the rapid code sending component to realize fine flow regulation and rapid code sending, and the intelligent separated layer water injection system of the oil field is beneficial to high-efficiency management.
Description
Technical Field
The invention belongs to the technical field of oil and gas well separate layer water injection oil displacement, and particularly relates to a ground control device for high-speed pulse communication and a regulation and control method thereof.
Background
As the oil field is continuously exploited, the oil layer energy is gradually consumed, resulting in the pressure drop of the oil layer, which brings great difficulty to the later exploitation, and in order to compensate the underground deficiency caused by the oil gas exploitation, the water injection into the oil layer is an important method for increasing the energy and the pressure of the oil layer, and the requirements of different oil layers on the water injection rate are different according to the energy pressure of the oil field, the geological characteristics of the oil field and the requirements on the quality of the oil.
The intelligent layered water injection technology is a novel layered water injection technology which combines a wireless communication technology, a layered water injection technology and an intelligent control technology into a whole, the pulse communication is a communication mode between a ground control system and an underground water distribution system, wave codes of different combinations are formed by regulating and controlling the change of liquid flow values and pressure values in water injection pipelines, the wave codes can define specific instructions, the sensor can receive the change of the flow values and the pressure values, and the corresponding instructions can be obtained after the wave codes are analyzed by the system.
The pulse communication technology adopted by the traditional water injection system is to utilize the opening and closing of a flow control valve of a ground control device and a water injection water nozzle of an underground water distribution device to regulate and control the flow value and the pressure value in the whole water injection pipeline, and because the main functions of the flow control valve of the ground control device and the water injection water nozzle of the underground water distribution device are used for finely regulating the flow, the action time of the flow control valve is 15-20 seconds, and the action time of the water injection water nozzle is 3-5 minutes, a set of wave codes are formed, the valve of the ground control device and the water injection water nozzle are required to be opened and closed for a plurality of times, the communication time is required to be 50-60 minutes, and the communication time is long.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a ground control device for high-speed pulse communication and a regulation and control method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a ground control device for high-speed pulse communication, characterized in that: the underground water distributor comprises a flow regulating assembly and a quick code-transmitting assembly, wherein one end of the quick code-transmitting assembly is connected with one end of the flow regulating assembly in series, the other end of the quick code-transmitting assembly is connected with a water injection pipeline, the other end of the flow regulating assembly is connected with an underground water distributor in series through the water injection pipeline, a main control board of a ground control device is electrically connected with the quick code-transmitting assembly and the flow regulating assembly, the main control board is continuously opened and closed by controlling the quick code-transmitting assembly to enable pressure waveforms with high and low changes to be generated in the water injection pipeline, the underground water distributor detects the pressure waveforms with the changes in the water injection pipeline, and pressure pulse communication between the underground water distributor and the ground control device is realized by generating pressure wave codes through the pressure waveforms.
Further, one end of the flow regulating assembly is connected with a high-frequency flowmeter in series, and the quick code sending assembly, the flow regulating assembly and the high-frequency flowmeter are connected in series in a water injection pipeline; the flow regulating assembly is also connected with an electric cabinet, and the main control board is arranged in the electric cabinet.
Further, the quick code component comprises a code-sending valve main body, a gear motor is arranged on the code-sending valve main body, the output end of the gear motor is connected with a transmission bevel gear, a pair of spaced valve pipelines are arranged in the code-sending valve main body, a code-sending valve is arranged between the pair of valve pipelines, the code-sending valve is formed by relatively sealing and attaching the end parts of a pair of code-sending valve plates, tapered tooth surfaces are arranged on the peripheries of the opposite end parts of the code-sending valve plates, the tapered tooth surfaces are meshed with the transmission bevel gear for transmission, and the gear motor drives the transmission bevel gear to drive the pair of code-sending valve plates to rotate so as to open and close the code-sending valve; the code sending valve is continuously opened and closed to cause high and low changing pressure waveforms in the water injection pipeline, and the underground water distributor is in pressure pulse communication with the ground control device according to the detected pressure waveforms.
Further, a plurality of code sending and flow passing holes are arranged in a penetrating manner in the axial direction of the code sending valve plate in a radial circumferential array, and a pair of code sending valve plates are rotated in the radial direction to drive the opposite code sending and flow passing holes to be staggered or penetrated with each other so as to realize the closing or opening of the code sending valve.
Further, the flow regulating assembly comprises a flow valve main body, a cavity is formed in the flow valve main body, a flow regulating valve is arranged in the cavity, an electric actuator is arranged outside the flow valve main body, the output end of the electric actuator is connected with a transmission shaft, the end part of the transmission shaft extends into the cavity to be connected with the flow regulating valve, and the electric actuator drives the transmission shaft to rotate so as to control flow regulation of the flow regulating valve.
Further, the flow regulating valve is formed by relatively sealing and laminating the end parts of the rotary valve plate and the fixed valve plate, a pair of flow overflow holes with intervals are formed in the axial through mode of the fixed valve plate, the end part of the transmission shaft is connected with one end of the rotary valve plate, one end of the fixed valve plate is fixed at the lower end of the cavity, and when the transmission shaft rotates to drive the rotary valve plate to rotate relative to the fixed valve plate, the rotary valve plate covers the opening area of the flow overflow holes to regulate the flow.
Further, a power module is further arranged in the electric cabinet, and the main control board is electrically connected with the high-frequency flowmeter, the gear motor and the electric actuator, and is used for supplying power to the main control board.
Further, the main control board comprises an MCU, an AD acquisition and conversion unit, an electric signal processing unit, a code sending valve driving unit and a flow valve driving unit; the AD acquisition conversion unit is electrically connected with a code sending pressure sensor arranged on the valve pipeline, a flow pressure sensor arranged in the flow valve main body and a temperature sensor, and converts analog signals detected by the code sending pressure sensor, the flow pressure sensor and the temperature sensor into digital signals and transmits the digital signals to the MCU; the electric signal processing unit is electrically connected with the high-frequency flowmeter to convert the detected voltage analog signal into a flow analog signal, the flow analog signal is transmitted to the AD acquisition conversion unit, and the AD acquisition conversion unit converts the flow analog signal into a digital signal and transmits the digital signal to the MCU.
Furthermore, the invention also provides a regulation and control method of the ground control device for high-speed pulse communication, which is characterized in that: the system comprises a ground control device, a downhole water distributor and a pressure wave code; the method specifically comprises the following steps:
step S11, the main control center sends out an instruction, and the instruction is transmitted to the MCU of the ground control device through the remote communication system;
step S12, the MCU receives and analyzes the instruction, and generates a corresponding control instruction according to the pressure wave code form corresponding to the instruction;
step S13, the MCU detects and identifies whether the state of the flow regulating valve is open or closed, and if the state is closed, the step S14 is executed; if the state is on, executing step S15;
step S14, the MCU sends out a control instruction through the flow valve driving unit to control the electric actuator to fully open the flow regulating valve;
step S15, the MCU sends out a control instruction through a code sending valve driving unit, controls the quick code sending component to send codes and forms a pressure wave code appointed by the MCU in the water injection pipeline, and the pressure wave code is sent to the underground water distributor through an aqueous medium;
step S16, in the code sending process of the quick code sending component, the code sending pressure sensor is used for detecting the pressure value of the water medium in the water injection pipeline and transmitting the pressure value to the MCU through the AD acquisition conversion unit;
step S17, the MCU identifies the pressure value sent by the code sending pressure sensor, and detects whether the pressure wave code form corresponding to the instruction sent by the main control center is matched; if not, executing step S18 if the code sending fails; if so, executing step S19;
step S18, the MCU sends error information of failed code sending to a main control center;
step S19, the MCU controls the quick code sending component to continue to send codes;
step S110, if the code is transmitted, the MCU controls the code transmitting valve to be opened;
in step S111, the MCU sends a completion information prompt to the master control center through the remote communication system.
Further, the method also comprises the step of receiving a flow wave code of the underground water distributor by the ground control device, and specifically comprises the following steps:
s21, the high-frequency flowmeter collects flow values in the water injection pipeline and converts the flow values into flow digital signals through the AD collection and conversion unit to be transmitted to the MCU;
step S22, the MCU compares the flow digital signal with a flow waveform corresponding to the instruction stored by the MCU, and identifies whether the flow digital signal is the instruction, if so, the step S23 is executed; if not, continuing to execute the step 21;
step S23, the MCU analyzes the instruction corresponding to the flow waveform;
in step S24, the MCU sends instruction content to the master control center through the remote communication system.
By adopting the technical scheme, the invention has the following advantages and effects:
(1) The ground control device and the regulation and control method thereof of the invention are added with the rapid code sending function based on the traditional function of finely regulating the flow, and the rapid code sending component and the flow regulating component are regulated and controlled by the main control board to realize the finely regulating flow function and the rapid code sending function of the ground control device at the same time, thereby being beneficial to the efficient management of the intelligent separated layer water injection system of the oil field.
(2) According to the invention, as the code-transmitting overflow holes which are axially communicated are arranged on each code-transmitting valve plate on the quick code-transmitting assembly in the circumferential direction, when the code-transmitting overflow holes on the two code-transmitting valve plates are opposite to and communicated with each other, the code-transmitting valve is completely opened, the code-transmitting time can be controlled within 3-5 minutes, the communication time is short, and the real-time communication between the ground control device and the underground water distributor is facilitated.
Drawings
Fig. 1 is a schematic diagram of the high-speed pulse communication principle of the present invention.
Fig. 2 is a schematic structural diagram of a ground control device according to the present invention.
Fig. 3 is a schematic structural diagram of a fast code sending component of the present invention.
Fig. 4 (a) is a schematic diagram of the open state of the code sending valve of the present invention.
Fig. 4 (b) is a schematic diagram of the closed state of the code sending valve of the present invention.
FIG. 5 is a schematic view of a flow control assembly according to the present invention.
Fig. 6 (a) is a schematic diagram showing the closed state of the flow rate adjusting valve according to the present invention.
Fig. 6 (b) is a schematic diagram showing the opened state of the flow rate adjusting valve according to the present invention.
Fig. 7 is a schematic block diagram of a main control board of the present invention.
Fig. 8 (a) is a flow chart of the transmission of pressure wave codes by the surface control device of the present invention.
Fig. 8 (b) is a flowchart of the ground control device of the present invention receiving a flow wave code.
Fig. 9 is a schematic representation of a pressure wave code of the present invention.
The reference numerals are: 1 a ground control device; 2, a downhole water distributor; 3, a total water injection pump station;
1-1 an outlet connecting flange; 1-2 a quick code sending component; 1-3 flow regulating assembly; 1-4 electric control boxes; 1-5 high frequency flowmeter; 1-6 inlet connecting flanges;
1-2-1 gear motor; 1-2-2 code sending brackets; 1-2-3 code sending shaft couplings; 1-2-4 drive bevel gears; 1-2-5 code sending valve plates; 1-2-6 valve pipelines; 1-2-7 code sending valve main body; 1-2-8 code sending pressure sensor; 1-2-9 hall elements; 1-2-10 magnetic steel; 1-2-5-1 code sending overflow holes;
1-3-1 electric actuator; 1-3-2 flow coupling; 1-3-3 transmission shafts; 1-3-4 flow pressure sensor; 1-3-5 temperature sensors; 1-3-6 wire through holes; 1-3-7 cylindrical pins; 1-3-8 of fixed valve plates; 1-3-9 rotary valve plates; 1-3-10 flow valve bodies; 1-3-8-1 flow through orifice.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.
As shown in fig. 1. The intelligent separate-layer water injection system of the oil field comprises a ground control device 1, an underground water distributor 2 and a total water injection pump station 3, wherein the ground control device 1 carries out high-speed pulse communication with the underground water distributor 2 in each water injection well.
Each water injection well comprises a plurality of underground water distributors 2 and a ground control device 1, each oil layer is provided with one underground water distributor 2, the underground water distributors 2 are connected with the ground control device 1 after being connected in series through an underground water injection pipeline, the ground control device 1 is connected with a total water injection pump station 3 through a water injection pipeline on the ground, the total water injection pump station 3 supplies water to a plurality of water injection wells simultaneously and maintains the pressure stability of the whole water injection pipeline, the ground control device 1 controls the water injection quantity of each water injection well, and the underground water injection pipeline and the ground water injection pipeline form the whole water injection pipeline of the water injection system. The high-speed pulse communication means that the underground water distributor 2 in the intelligent layered water injection system and the ground control device 1 are in rapid wireless communication by means of pressure wave codes and flow wave codes.
As shown in fig. 2. The invention provides a ground control device for high-speed pulse communication, which comprises an outlet connecting flange 1-1, a rapid code sending component 1-2, a flow adjusting component 1-3, an electric cabinet 1-4, a high-frequency flowmeter 1-5 and an inlet connecting flange 1-6. One end of the quick code sending component 1-2 is connected with one end of the flow regulating component 1-3 in series, the other end of the quick code sending component 1-2 is connected with a water injection pipeline on the ground through a serial outlet connecting flange 1-1, the other end of the flow regulating component 1-3 is connected with one end of the outlet connecting flange 1-1 in series through a high-frequency flowmeter 1-5, and the other end of the outlet connecting flange 1-1 is connected with a downhole water distributor 2 in series through an underground water injection pipeline. The quick code sending component 1-2, the flow adjusting component 1-3 and the high-frequency flowmeter 1-5 are sequentially connected in series and installed in a water injection pipeline on the ground by the outlet connecting flange 1-1 and the inlet connecting flange 1-6, wherein the outlet connecting flange 1-1 is connected with an input port of a water injection pipeline on the ground, and the inlet connecting flange 1-6 is connected with an output port of the total water injection pump station 3.
Further, the flow regulating assembly 1-3 is also connected with an electric cabinet 1-4, the quick code sending function of the ground control device can be realized by regulating and controlling the quick code sending assembly 1-2 through the electric cabinet 1-4, and the fine flow regulating function of the ground control device 1 can be realized by regulating and controlling the flow regulating assembly 1-3 through the electric cabinet 1-4.
The underground water distributor 2 detects the pressure waveform changing in the water injection pipeline, and pressure pulse communication between the underground water distributor 2 and the ground control device 1 is realized by generating pressure wave codes through the pressure waveform. The main control board adjusts the flow of the water injection pipeline by controlling the flow adjusting component 1-3.
When the main control board controls the quick code-sending component 1-2 to be closed, the pressure in the water injection pipeline between the ground control device 1 and the underground water distributor 2 cannot be maintained by the total water injection pump station 3, the pressure of the water injection pipeline can be reduced, and when the quick code-sending component 1-2 is opened, the pressure of the water injection pipeline can be increased after being compensated, so that the high and low pressure change in the water injection pipeline is realized through the opening and closing of the quick code-sending component 1-2.
In the invention, the detection frequency of the high-frequency flowmeter 1-5 is 2-3 times/second, compared with the detection frequency of a common flowmeter, which is 0.5-1 time/second, the high-frequency flowmeter 1-5 can collect more water injection flow data in a water injection pipeline, and more accurate flow waveforms can be fitted in a stippling way when the receiving downhole water distributor 2 sends flow wave codes to the ground control device 1.
As shown in fig. 3. The quick code sending component 1-2 comprises a code sending valve body 1-2-7, a code sending support 1-2-2 of a frame structure is arranged outside the upper end of the code sending valve body 1-2-7, a gear motor 1-2-1 is arranged on the code sending support 1-2-2, the gear motor 1-2-1 is fixed on the code sending valve body 1-2-7 through the code sending support 1-2, the output end of the gear motor 1-2-1 penetrates through the code sending support 1-2 and then is connected with a transmission bevel gear 1-2-4 through a code sending coupler 1-2-3, and the code sending coupler 1-2-3 is positioned in the code sending support 1-2-2. A pair of valve pipelines 1-2-6 which are communicated at opposite intervals are arranged in the code sending valve main body 1-2-7, a code sending valve is arranged between the pair of valve pipelines 1-2-6 and is formed by relatively and axially jointing two code sending valve plates 1-2-5, and the opening and closing of the code sending valve controls the on-off of the pair of valve pipelines 1-2-6. The end parts of the valve pipelines 1-2-6 at the two sides of the code sending valve plates 1-2-5 are respectively pressed axially, so that the joint surfaces of the code sending valve plates 1-2-5 form a seal, the peripheries of the end parts of the code sending valve plates 1-2-5, which are relatively jointed, are respectively provided with conical tooth surfaces, and the conical tooth surfaces on the code sending valve plates 1-2-5 are respectively positioned at the two sides of the transmission bevel gears 1-2-4 and meshed with the transmission bevel gears 1-2-4 for transmission. The rotary motion of the gear motor 1-2-1 is transmitted to the transmission bevel gear 1-2-4 through the code sending coupler 1-2-3, the transmission bevel gear 1-2-4 rotates to drive the pair of bevel gear faces to rotate in opposite directions, and at the moment, the pair of code sending valve plates 1-2-5 simultaneously do rotary motion in opposite directions to realize the opening and closing of the code sending valve.
Further, the bevel gear surfaces are arranged on the edges and corners of the radial periphery of one end of the code sending valve plate 1-2-5, the bevel teeth are uniformly distributed on the circumference of the bevel gear surfaces in an array mode, the bevel teeth on each bevel gear surface are meshed with the transmission bevel gears 1-2-4, and the transmission bevel gears 1-2-4 drive the bevel gears to drive the code sending valve plate 1-2-5 to radially rotate between the pair of valve pipelines 1-2-6.
Further, the magnetic steel 1-2-10 is arranged on the code transmitting coupler 1-2-3, the Hall element 1-2-9 is arranged on the inner side of the code transmitting bracket 1-2-2 opposite to the magnetic steel 1-2-10, when the gear motor 1-2-1 rotates, the magnetic steel 1-2-10 on the code transmitting coupler 1-2-3 is driven to rotate, and an electric signal is generated when the magnetic steel 1-2-10 passes through the Hall element 1-2-9 in the rotating process so as to detect the rotating number of turns of the magnetic steel, thereby realizing the detection of the switching times of the code transmitting valve.
As shown in fig. 4 (a) and 4 (b). Each code sending valve block 1-2-5 is of an axial valve structure, a plurality of code sending overflow holes 1-2-5-1 uniformly distributed and arrayed along the radial circumference of the code sending valve block are arranged in an axial through mode of each code sending valve block 1-2-5, the cross section of each code sending overflow hole 1-2-5-1 is of a conical ellipse, and the aperture of the conical ellipse is sequentially increased from the center to the periphery along the radial direction of each code sending valve block 1-2-5. The pair of code sending valve plates 1-2-5 are sleeved between the pair of valve pipelines 1-2-6, the transmission bevel gear 1-2-4 drives the pair of code sending valve plates 1-2-5 to radially rotate, and the code sending valve is closed or opened by the mutual dislocation or the through of the opposite code sending overflow holes 1-2-5-1 on the pair of code sending valve plates 1-2-5.
When the code sending overflow holes 1-2-5-1 on the pair of code sending valve plates 1-2-5 rotate to be opposite to each other and communicated, the code sending valve is completely opened, and when the code sending overflow holes 1-2-5-1 on the pair of code sending valve plates 1-2-5 rotate to be completely staggered, the code sending valve is completely closed. After the code sending valve is closed, the pressure of the water injection pipeline between the ground control device 1 and the underground water distributor 2 cannot be maintained by the total water injection pump station 3, the pressure can be reduced, and after the code sending valve is opened, the pressure of the water injection pipeline can be compensated and increased.
As one preferable mode, in the invention, 8 code-sending and flow-passing holes 1-2-5-1 are distributed on the radial circumference of each code-sending valve plate 1-2-5, and when the code-sending valve plates 1-2-5 rotate for one circle, the code-sending and flow-passing holes 1-2-5-1 on the code-sending valve plates 1-2-5 are right opposite to each other and staggered for 8 times, which is equivalent to opening and closing the code-sending valve. Therefore, the code valve plates 1-2-5 rotate in opposite directions at the same time, and the speed of opening and closing the code valve is faster than that of a single code valve plate, so that the ground control device 1 can send pressure wave codes to the underground water distributor 2 more quickly.
Further, a code sending pressure sensor 1-2-8 is arranged on the valve pipeline 1-2-6 at one side at the same time and is used for detecting whether the pressure wave code formed in the water injection pipeline is accurate or not. The fixed end of the code sending pressure sensor 1-2-8 is arranged on the code sending valve main body 1-2-7 outside the valve pipeline 1-2-6, the detection end of the code sending pressure sensor 1-2-8 extends into the valve pipeline 1-2-6, when the water medium in the valve pipeline 1-2-6 contacts with the detection surface of the detection end, the pressure of the water medium can press the detection surface to be concavely deformed, and the pressure sensitive element in the code sending pressure sensor 1-2-8 can realize pressure detection due to the changed electric signal generated by the physical deformation.
As shown in fig. 5. The flow regulating assembly 1-3 comprises a flow valve main body 1-3-10, a cavity is axially arranged in the flow valve main body 1-3-10, radial flow holes and axial flow holes are respectively arranged at the radial lower ends and the axial lower ends of the periphery of the flow valve main body 1-3-10 and are communicated with the cavity, the axial flow holes are communicated with the high-frequency flowmeter 1-5, and the radial flow holes are communicated with the valve pipelines 1-2-6 of the quick code sending assembly 1-2. The bottom of the cavity at the upper end of the axial flow hole is provided with a flow regulating valve for controlling the flow of the flow regulating assembly 1-3, and the flow regulating valve is formed by vertically laminating a rotary valve plate 1-3-9 and a fixed valve plate 1-3-8.
The upper end of the periphery of the flow valve main body 1-3-10 is provided with a flow bracket with a frame structure, the upper end of the flow bracket is provided with an electric actuator 1-3-1, and the electric actuator 1-3-1 is fixed on the flow valve main body 1-3-10 through the flow bracket. The output end of the electric actuator 1-3-1 is connected with a transmission shaft 1-3-3 through a flow coupler 1-3-2, the flow coupler 1-3-2 is positioned in the flow support, the end part of the transmission shaft 1-3-3 extends into a cavity of the flow valve body 1-3-10, the end part of the transmission shaft 1-3-3 extending into the cavity is connected with one end of a rotary valve plate 1-3-9 through a cylindrical pin 1-3-7, the other end of the rotary valve plate 1-3-9 is relatively attached to one end of a fixed valve plate 1-3-8, and the other end of the fixed valve plate 1-3-8 is fixed at the bottom of the cavity of the flow valve body 1-3-10 through the cylindrical pin 1-3-7. The output end of the electric actuator 1-3-1 rotates to drive the flow coupler 1-3-2 to rotate so as to enable the transmission shaft 1-3-3 to rotate, and the transmission shaft 1-3-3 rotates to drive the rotary valve plate 1-3-9 to rotate relative to the fixed valve plate 1-3-8 so as to realize flow regulation of the flow regulating valve.
Further, the flow pressure sensor 1-3-4 is arranged on the radial periphery of the axial flow hole in the flow valve main body 1-3-10 and the radial periphery of the cavity, and the flow pressure sensor 1-3-4 is communicated with the cavity and the axial flow hole. The pair of flow pressure sensors 1-3-4 are used for detecting water injection pressure and water incoming pressure respectively. The pair of flow pressure sensors 1-3-4 are respectively positioned at two ends of the flow regulating valve, wherein the flow pressure sensor 1-3-4 positioned at one end of the cavity detects the pressure of incoming water, and the flow pressure sensor 1-3-4 positioned at one end of the axial flow hole detects the pressure of injected water.
A temperature sensor 1-3-5 is further arranged in the flow valve main body 1-3-10, and the temperature sensor 1-3-5 is used for detecting water injection temperature to compensate the detection value of the flow pressure sensor 1-3-4. The periphery of the flow valve main body 1-3-10 is also provided with a wire passing hole 1-3-6, and the lead wires of the flow pressure sensor 1-3-4 and the temperature sensor 1-3-5 are connected into the electric cabinet 1-4 through the wire passing hole 1-3-6 and connected with the main control board.
As shown in fig. 6 (a) and 6 (b). The fixed valve plates 1-3-8 and the rotary valve plates 1-3-9 are of disc-shaped structures, wherein a pair of flow through holes 1-3-8-1 which are relatively spaced are axially and penetratingly arranged on the fixed valve plates 1-3-8, the cross section of each flow through hole 1-3-8-1 is arc-shaped conical ellipse, and the large ends and the small ends of the corresponding flow through holes 1-3-8-1 are relatively arranged and are relatively bent inwards. The cross section of the rotary valve plate 1-3-9 is formed by encircling a pair of hyperbolic sides and a pair of circular arc sides, the pair of hyperbolic sides are oppositely arranged, the pair of circular arc sides are also oppositely arranged, the opposite hyperbolic sides are concave, and the opposite circular arc sides are convex.
When the two ends of the hyperbolic side edge of the rotary valve plate 1-3-9 are positioned between the pair of flow through holes 1-3-8-1, the flow through holes 1-3-8-1 are exposed, the flow regulating valve is in a fully opened state, and when the two ends of the circular arc side edge of the rotary valve plate 1-3-9 completely cover the pair of flow through holes 1-3-8-1, the flow regulating valve is in a closed state. In the process of coaxially and relatively rotating the rotary valve plate 1-3-9 along the fixed valve plate 1-3-8, the exposed opening area of the flow through hole 1-3-8-1 on the fixed valve plate 1-3-8 is gradually increased, and the opening degree of the flow regulating valve is gradually increased until the rotary valve plate 1-3-9 is completely opened, so that the flow regulation can be performed by covering the opening area of the flow through hole 1-3-8-1 by the rotary valve plate 1-3-9. In order to ensure accurate regulation and control of water injection flow, the time of one-time opening and closing actions of the flow regulating valve is controlled to be 15-20S.
As shown in fig. 7. The electric control cabinet 1-4 is internally provided with a power supply module and a display device, and a main control board in the electric control cabinet 1-4 is electrically connected with the high-frequency flowmeter 1-5, the gear motor 1-2-1, the code sending pressure sensor 1-2-8, the electric actuator 1-3-1, the flow pressure sensor 1-3-4 and the temperature sensor 1-3-5, and is used for supplying power to the main control board through the power supply module. The display device is electrically connected with the main control board, can display parameters such as pressure, flow, temperature and the like of the ground control device 1, and is also an operation interface for man-machine interaction. The display device is a display screen. The power module is an AC 220V-DC 24V power supply and is electrically connected with an external power supply.
The main control board is used for receiving detection signals of the code receiving pressure sensor 1-2-8, the flow pressure sensor 1-3-4, the temperature sensor 1-3-5 and the high-frequency flowmeter 1-5, regulating and controlling feedback signals of the flow regulating component 1-3 and the quick code sending component 1-2, and simultaneously controlling the starting and stopping of the gear motor 1-2-1, so as to realize code sending to the underground water distributor 2 and controlling the operation of the electric actuator 1-3-1 to realize water injection flow regulation. The main control board can also establish communication with a main control center through a remote communication system, so that personnel can remotely control the ground control device 1.
Further, the main control board comprises an MCU (micro control unit), an AD acquisition conversion unit, an electric signal processing unit, an RS232 communication unit, a data storage unit, a signal acquisition unit, a code sending valve driving unit, a flow valve driving unit, an RS485 communication unit and a 24V-2.5V power supply unit.
The AD acquisition conversion unit is connected with the code sending pressure sensor 1-2-8, the flow pressure sensor 1-3-4 and the temperature sensor 1-3-5, converts analog signals detected by the code sending pressure sensor 1-2-8, the flow pressure sensor 1-3-4 and the temperature sensor 1-3-5 into digital signals and then transmits the digital signals to the MCU, and the electric signal processing unit is electrically connected with the flow electrode of the high-frequency flowmeter 1-5, converts voltage analog signals detected by the flow electrode into flow analog signals through algorithm processing and transmits the flow analog signals to the AD acquisition conversion unit, and the AD acquisition conversion unit converts the flow analog signals into digital signals and then transmits the digital signals to the MCU.
The RS232 communication unit is used for bidirectional communication with the display device, transmitting pressure, temperature and flow data for the display device in real time, and simultaneously reading instructions sent by touch keys on the display device; the data storage unit is used for storing calibration data of factory-set pressure and flow calibration of the ground control device 1.
The signal acquisition unit is electrically connected with the Hall element 1-2-9 and used for detecting the rotation times of the code sending valve, and the code sending valve driving unit is electrically connected with the gear motor 1-2-1 and used for controlling the starting and stopping of the gear motor 1-2-1. The flow valve driving unit is electrically connected with the electric actuator 1-3-1 and used for controlling the starting and stopping of the electric actuator 1-3-1, and the information of the rotation position of the rotary valve plate 1-3-9 can be sent to the signal processing unit through a signal wire of the electric actuator 1-3-1. Because the electric actuator 1-3-1 has a motion position feedback function, the rotation position of the rotary valve plate 1-3-9 is the same as that of the electric actuator 1-3-1.
The RS485 communication unit is connected with the main control center through a remote communication system and is used for receiving a control instruction sent by the main control center; the 24V-2.5V power supply unit is electrically connected with an AC 220V-DC 24V power supply to output stable voltage, and provides power for each unit module on the main control board.
Again as shown in fig. 1. The ground control device 1 sends a pressure wave code to the underground water distributor 2, the underground water distributor 2 sends a flow wave code to the ground control device 1, and as the pressure of a water injection pipeline between the underground water distributor 2 and the ground control device 1 is controlled by the total water injection pump station 3, when the ground control device 1 controls the opening and closing of a code sending valve of the quick code sending component 1-2, the pressure of the water injection pipeline between the ground control device 1 and the underground water distributor 2 can be obviously influenced, and when the underground water distributor 2 is opened and closed, the influence of changing the water injection flow in the water injection pipeline on the pressure of the water injection pipeline is small, so that the ground control device 1 is easy to be misjudged due to the interference of external environments such as small fluctuation of the water supply pressure of the total water injection pump station 3, small leakage of the water injection pipeline and the like.
Therefore, the invention also provides a regulation and control method of the ground control device for high-speed pulse communication, which comprises the steps that the ground control device 1 sends pressure wave codes to the underground water distributor 2 and the ground control device 1 receives flow wave codes of the underground water distributor 2, and the interference of the external environment can be avoided or reduced through the regulation and control method.
As shown in fig. 8 (a). When the ground control device 1 sends a pressure wave code to the underground water distributor 2, the method specifically comprises the following steps:
step S11, the main control center sends out an instruction, and the instruction is transmitted to the MCU of the ground control device 1 through the remote communication system;
step S12, the MCU receives and analyzes the instruction, and generates a corresponding control instruction according to the pressure wave code form corresponding to the instruction;
step S13, the MCU detects and identifies whether the flow regulating valve is in an open state or a closed state, if the flow regulating valve is in the closed state, the step S14 is executed, and if the flow regulating valve is in the open state, the step S15 is executed;
step S14, the MCU sends out a control instruction through the flow valve driving unit to control the electric actuator 1-3-1 to rotate, and the flow regulating valve is fully opened;
step S15, the MCU sends a control instruction through a code sending valve driving unit to control the quick code sending component 1-2 to send codes and form pressure wave codes appointed by the MCU in the water injection pipeline, and the pressure wave codes are sent to the underground water distributor 2 through an aqueous medium;
specifically, the gear motor 1-2-1 in the quick code sending assembly 1-2 rotates to control the code sending valve to be opened and closed, the pressure in the water injection pipeline between the ground control device 1 and the underground water distributor 2 is changed in high and low by controlling the opening and closing of the code sending valve, and different pressure wave codes are formed by different combinations of high and low pressures;
s16, in the code sending process, the quick code sending component 1-2 detects the pressure value of water in the water injection pipeline through the code sending pressure sensor 1-2-8 and transmits the pressure value to the MCU through the AD acquisition conversion unit;
step S17, the MCU identifies the pressure value sent by the code sending pressure sensor 1-2-8, and detects whether the pressure wave code form corresponding to the instruction sent by the main control center is matched; if not, executing step S18 if the code sending fails; if so, executing step S19;
step S18, the MCU sends error information of failed code sending to a master control center through the RS485 communication unit; after receiving the error information, the main control center can re-transmit codes at intervals of 15-30min, and if the codes are failed for multiple times, the water injection is stopped to maintain the equipment after confirming that the equipment is in fault;
step S19, the MCU controls the rapid code sending component 1-2 to continue code sending;
step S110, if the code is transmitted, the MCU controls the code transmitting valve to be opened;
and the code sending valve is started, the speed reducing motor 1-2-1 in the quick code sending assembly 1-2 is controlled by the MCU to rotate, and when the code sending valve is started to a full-open position, the code sending is finished.
In step S111, the MCU sends a completion information prompt to the master control center through the remote communication system.
As shown in fig. 8 (b). When the ground control device 1 receives the flow wave code of the underground water distributor 2, the method specifically comprises the following steps:
s21, the high-frequency flowmeter 1-5 collects the flow value in the water injection pipeline and converts the flow value into a flow digital signal through the AD collection conversion unit to be transmitted to the MCU;
step S22, the MCU compares the flow digital signal with a flow waveform corresponding to the instruction stored by the MCU, and identifies whether the flow digital signal is the instruction, if so, the step S23 is executed; if not, continuing to execute the step S21, and continuing to collect the flow value in the water injection pipeline by the high-frequency flowmeter 1-5;
step S23, the MCU analyzes the instruction corresponding to the flow waveform;
in step S24, the MCU sends instruction content to the master control center through the remote communication system.
As shown in fig. 9. The invention uses 2 pulse communication wave codes of pressure wave code and flow wave code to generate identifiable high and low variation values in water medium, which are equivalent to binary 0 and 1, and different combinations correspond to different instructions, so that the invention adopts a high and low code pattern mode to compile. To eliminate fluctuations in the water injection line caused by non-human factors, 1 effective high-low pattern hold time is defined as T, which is 5 seconds. The specific coding rules are as follows: the wave code consists of 3 parts, namely a wake-up code, an instruction code and an end code, wherein the wake-up code pattern is a 2T high code and a 2T low code, the end code pattern is a 2T continuous high code or a 2T low code, the end code is opposite to the last bit code pattern of the instruction code, the instruction code in the middle part is a continuous turnover high-low code combination, the continuous 2T high code or low code cannot appear, the length bit number of the instruction code is from 11 bits to 18 bits, the code patterns with different lengths are given according to the using frequency of the instruction, the length of the frequently used instruction code pattern is short, the code sending speed is high, and the communication time is effectively shortened.
Claims (10)
1. A ground control device for high-speed pulse communication, characterized in that: the quick water distribution device comprises a flow regulating component (1-3) and a quick code distribution component (1-2), wherein one end of the quick code distribution component (1-2) is connected with one end of the flow regulating component (1-3) in series, the other end of the quick code distribution component (1-2) is connected with a water injection pipeline, the other end of the flow regulating component (1-3) is connected with a downhole water distributor (2) in series through the water injection pipeline, a main control board of a ground control device (1) is electrically connected with the quick code distribution component (1-2) and the flow regulating component (1-3), the main control board is used for continuously opening and closing the quick code distribution component (1-2) to enable pressure waveforms with high and low changes to be generated in the water injection pipeline, the downhole water distributor (2) detects the pressure waveforms with the changes in the water injection pipeline, and pressure pulse communication between the downhole water distributor (2) and the ground control device (1) is realized through pressure pulse codes generated by the pressure waveforms.
2. A ground control device for high-speed pulse communication according to claim 1, wherein: one end of the flow regulating component (1-3) is connected with a high-frequency flowmeter (1-5) in series, and the quick code sending component (1-2), the flow regulating component (1-3) and the high-frequency flowmeter (1-5) are connected in series in a water injection pipeline; the flow regulating assembly (1-3) is also connected with an electric cabinet (1-4), and the main control board is arranged in the electric cabinet (1-4).
3. A ground control device for high-speed pulse communication according to claim 2, wherein: the quick code sending component (1-2) comprises a code sending valve main body (1-2-7), a gear motor (1-2-1) is arranged on the code sending valve main body (1-2-7), a transmission bevel gear (1-2-4) is connected to the output end of the gear motor (1-2-1), a pair of spaced valve pipelines (1-2-6) are arranged in the code sending valve main body (1-2-7), a code sending valve is arranged between the pair of valve pipelines (1-2-6), the code sending valve is formed by relatively sealing and attaching the end parts of a pair of code sending valve plates (1-2-5), conical tooth surfaces are arranged on the peripheries of the end parts of the code sending valve plates (1-2-5), the conical tooth surfaces are meshed with the transmission bevel gear (1-2-4), and the gear motor (1-2-1) drives the transmission bevel gear (1-2-4) to drive the pair of code sending valve plates (1-2-5) to rotate so as to realize code sending and opening and closing of the code sending valve; the code sending valve is continuously opened and closed to cause high and low changing pressure waveforms in the water injection pipeline, and the underground water distributor (2) is in pressure pulse communication with the ground control device (1) according to the detected pressure waveforms.
4. A ground control device for high-speed pulse communication according to claim 3, wherein: the axial through of the code sending valve plates (1-2-5) is provided with a plurality of code sending and overflowing holes (1-2-5-1) which are arrayed along the radial circumference, and the radial rotation of one pair of code sending valve plates (1-2-5) drives the opposite code sending and overflowing holes (1-2-5-1) to be staggered or communicated with each other so as to realize the closing or opening of the code sending valve.
5. A ground control device for high-speed pulse communication according to claim 4, wherein: the flow regulating assembly (1-3) comprises a flow valve main body (1-3-10), a cavity is formed in the flow valve main body (1-3-10), a flow regulating valve is arranged in the cavity, an electric actuator (1-3-1) is arranged outside the flow valve main body (1-3-10), the output end of the electric actuator (1-3-1) is connected with a transmission shaft (1-3-3), the end part of the transmission shaft (1-3-3) extends into the cavity to be connected with the flow regulating valve, and the electric actuator (1-3-1) drives the transmission shaft (1-3-3) to rotationally control flow regulation of the flow regulating valve.
6. A ground control device for high-speed pulse communication according to claim 5, wherein: the flow regulating valve is formed by relatively sealing and laminating the ends of a rotary valve plate (1-3-9) and a fixed valve plate (1-3-8), a pair of flow through holes (1-3-8-1) which are spaced are formed in an axial through mode of the fixed valve plate (1-3-8), the end portion of a transmission shaft (1-3-3) is connected with one end of the rotary valve plate (1-3-9), one end of the fixed valve plate (1-3-8) is fixed at the lower end of a cavity, and when the transmission shaft (1-3-3) rotates to drive the rotary valve plate (1-3-9) to rotate relative to the fixed valve plate (1-3-8), the rotary valve plate (1-3-9) covers the opening area of the flow through holes (1-3-8-1) to regulate flow.
7. A ground control device for high-speed pulse communication according to claim 6, wherein: the electric control cabinet (1-4) is internally provided with a power supply module, the main control board is electrically connected with the high-frequency flowmeter (1-5), the gear motor (1-2-1) and the electric actuator (1-3-1), and the main control board is powered by the power supply module.
8. A ground control device for high-speed pulse communication according to claim 7, wherein: the main control board comprises an MCU, an AD acquisition and conversion unit, an electric signal processing unit, a code sending valve driving unit and a flow valve driving unit; the AD acquisition conversion unit is electrically connected with a code sending pressure sensor (1-2-8) arranged on the valve pipeline (1-2-6), a flow pressure sensor (1-3-4) arranged in the flow valve main body (1-3-10) and a temperature sensor (1-3-5), and converts analog signals detected by the code sending pressure sensor (1-2-8), the flow pressure sensor (1-3-4) and the temperature sensor (1-3-5) into digital signals and then transmits the digital signals to the MCU; the electric signal processing unit is electrically connected with the high-frequency flowmeter (1-5) to convert the detected voltage analog signals into flow analog signals, the flow analog signals are transmitted to the AD acquisition conversion unit, and the flow analog signals are converted into digital signals by the AD acquisition conversion unit and are transmitted to the MCU.
9. A method of controlling a ground control device for high-speed pulse communication according to any one of claims 1 to 8, wherein: the device comprises a ground control device (1) which transmits a pressure wave code to a downhole water distributor (2); the method specifically comprises the following steps:
step S11, the main control center sends out an instruction, and the instruction is transmitted to the MCU of the ground control device (1) through the remote communication system;
step S12, the MCU receives and analyzes the instruction, and generates a corresponding control instruction according to the pressure wave code form corresponding to the instruction;
step S13, the MCU detects and identifies whether the state of the flow regulating valve is open or closed, and if the state is closed, the step S14 is executed; if the state is on, executing step S15;
step S14, the MCU sends out a control instruction through the flow valve driving unit to control the electric actuator (1-3-1) to fully open the flow regulating valve;
s15, the MCU sends a control instruction through a code sending valve driving unit to control the quick code sending component (1-2) to send codes and form pressure wave codes appointed by the MCU in the water injection pipeline, and the pressure wave codes are sent to the underground water distributor (2) through an aqueous medium;
s16, in the code sending process, the quick code sending component (1-2) detects the pressure value of the water medium in the water injection pipeline through the code sending pressure sensor (1-2-8) and transmits the pressure value to the MCU through the AD acquisition conversion unit;
s17, the MCU identifies the pressure value sent by the code sending pressure sensor (1-2-8) and detects whether the pressure wave code form corresponding to the instruction sent by the main control center is matched; if not, executing step S18 if the code sending fails; if so, executing step S19;
step S18, the MCU sends error information of failed code sending to a main control center;
step S19, the MCU controls the rapid code sending component (1-2) to continue code sending;
step S110, if the code is transmitted, the MCU controls the code transmitting valve to be opened;
in step S111, the MCU sends a completion information prompt to the master control center through the remote communication system.
10. The method for controlling a ground control device for high-speed pulse communication according to claim 9, wherein: the method also comprises the step of receiving a flow wave code of the underground water distributor (2) by the ground control device (1), and specifically comprises the following steps:
s21, a high-frequency flowmeter (1-5) collects flow values in a water injection pipeline and converts the flow values into flow digital signals through an AD collection conversion unit to be transmitted to an MCU;
step S22, the MCU compares the flow digital signal with a flow waveform corresponding to the instruction stored by the MCU, and identifies whether the flow digital signal is the instruction, if so, the step S23 is executed; if not, continuing to execute the step 21;
step S23, the MCU analyzes the instruction corresponding to the flow waveform;
in step S24, the MCU sends instruction content to the master control center through the remote communication system.
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| CN117365408B (en) * | 2023-11-15 | 2024-10-22 | 中国石油工程建设有限公司 | Pressure-controlled cable-free intelligent dispensing control method and device |
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| CN117888868B (en) * | 2024-03-18 | 2024-05-28 | 西安洛科电子科技股份有限公司 | Underground integrated rechargeable high-speed wave code water distribution device |
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