Pressure wave control method, system, and computer storage medium

Abstract

The application discloses a pressure wave control method, a system and a computer storage medium, and the method comprises the following steps: confirming overall pressure data through a pressure flow sensor; determining a pressure peak value through a communication distance and a learning mode; monitoring the pressure peak value in real time through the pressure flow sensor; adjusting a downhole water distributor through the change of the pressure peak value; and forming a closed-loop control by combining the data of the downhole water distributor with the data of a ground controller. The application fundamentally avoids the problem that the downhole water distributor cannot receive signals due to the fact that the change of pressure waves is not obvious, achieves the effect of power saving through the closed-loop control, and enhances the endurance of the downhole water distributor.

Description

Technical Field

[0001] This invention relates to the field of oil extraction, and in particular to pressure wave control methods, systems, and computer storage media. Background Technology

[0002] In oil resource extraction, stratified water injection technology can more effectively extract oil resources. Currently, my country's stratified water injection technology has evolved through four generations. The latest fourth-generation oilfield stratified water injection technology features digitalization and intelligence, achieving real-time digital monitoring of single-well stratified pressure and water injection volume, network-based information monitoring of block and reservoir water injection dynamics, and integrated reservoir and engineering systems for water injection scheme design and optimization and real-time adjustment of downhole stratified water injection. This effectively improves water-driven utilization, controls water cut rise, and enhances water-drive development efficiency. 。 The fourth-generation oilfield stratified water injection technology is mainly divided into cable-controlled stratified water injection technology, which is typically represented by cable-controlled stratified water injection technology, and cableless stratified water injection technology, which is typically represented by wavecode communication.

[0003] Cable-based stratified water injection technology has high construction costs, while cableless stratified water injection technology, achieved through pressure wave code communication, has lower construction costs. However, when pressure changes are not significant, the downhole water distributor may not receive a signal, leading to communication failure between the surface and the well, affecting work efficiency. Existing patent CN113503149A discloses a low-power stratified water injection control method and system for downholes, which solves the problem of signal loss due to the insignificance of a single wave code signal by using pressure waves and flow waves interchangeably. However, it does not fundamentally solve the problem of the downhole water distributor not receiving a signal when pressure changes are not significant. Summary of the Invention

[0004] This invention provides a pressure wave control method, system, and computer storage medium to solve the problem in the prior art that the downhole water distributor cannot receive a signal when the pressure change is not significant.

[0005] On one hand, embodiments of the present invention provide a pressure wave control method, including:

[0006] The overall pressure data was confirmed using a pressure and flow sensor.

[0007] Stress peaks were determined by communication distance and learning patterns;

[0008] The pressure peak value is monitored in real time using the pressure and flow sensor.

[0009] The downhole water distributor is adjusted by the change in the pressure peak value;

[0010] The data from the downhole water distributor is tracked and combined with the data from the surface controller to form a closed-loop control.

[0011] In one possible implementation, the overall pressure data is a dataset collected by running the wellhead control valve and downhole nozzle from their current state to full closure.

[0012] In one possible implementation, determining the pressure peak through communication distance and learning mode involves confirming the range of the pressure peak based on the distance between the ground controller and the downhole water distributor, ensuring that the wavecode generated by the ground controller through the pressure peak is clear but about to dissipate before reaching the downhole water distributor, and then confirming it through learning mode debugging.

[0013] In one possible implementation, the downhole water distributor returns a wavecode based on the received pressure peak value during communication.

[0014] In one possible implementation, the threshold is a dynamic value determined by combining data from the downhole water distributor with data from the surface controller.

[0015] On the other hand, embodiments of the present invention also provide a pressure wave control system, comprising:

[0016] The wavecode monitoring module is used to confirm the overall pressure data through the pressure and flow sensor; determine the pressure peak value through communication distance and learning mode; and monitor the pressure peak value in real time through the pressure and flow sensor.

[0017] The feedback control module is used to adjust the downhole water distributor based on changes in the pressure peak value; it tracks the data from the downhole water distributor and combines it with the data from the surface controller to form a closed-loop control.

[0018] In one possible implementation, the wavecode monitoring module includes the downhole water distributor and a pressure and flow sensor.

[0019] In one possible implementation, the downhole water distributor is installed in the downhole pipeline and is powered by a battery.

[0020] On the other hand, embodiments of the present invention also provide a computer storage medium storing a plurality of computer instructions, the plurality of computer instructions being used to cause a computer to execute any of the methods described above.

[0021] The pressure wave control method, system, and computer storage medium of this invention have the following advantages:

[0022] (1) The pressure wave control method fundamentally avoids the problem that the downhole water distributor cannot receive the signal due to the insignificant change of pressure wave.

[0023] (2) Power saving effect is achieved through closed-loop control, which enhances the endurance of the downhole water distributor. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic flowchart of the pressure wave control method provided in an embodiment of the present invention;

[0026] Figure 2 This is a flowchart of the learning method in the pressure wave control method provided in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of a pressure wave control system provided in an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Figure 1 This is a flowchart illustrating the pressure wave control method provided in an embodiment of the present invention; the present invention provides a pressure wave control method, including:

[0030] The overall pressure data was confirmed using a pressure and flow sensor.

[0031] Stress peaks were determined by communication distance and learning patterns;

[0032] The pressure peak value is monitored in real time using the pressure and flow sensor.

[0033] The downhole water distributor is adjusted by the change in the pressure peak value;

[0034] The data from the downhole water distributor is tracked and combined with the data from the surface controller to form a closed-loop control.

[0035] For example, the pressure and flow sensor is installed downhole to collect data such as pressure and flow rate. Then, the pressure peak value is set according to the actual required communication distance, and the pressure peak value is obtained through repeated optimization learning in a learning mode.

[0036] In one possible embodiment, the overall pressure data is a dataset collected by running the wellhead control valve and downhole nozzle from their current state to full closure.

[0037] In one possible embodiment, determining the pressure peak through communication distance and learning mode involves confirming the range of the pressure peak based on the distance between the ground controller and the downhole water distributor, ensuring that the wavecode generated by the ground controller through the pressure peak is clear but about to dissipate before reaching the downhole water distributor, and then confirming it through learning mode debugging.

[0038] For example, such as Figure 2 As shown, assuming the pressure peak is confirmed to be 5 MPa based on the distance between the surface controller and the downhole water distributor, the system is then debugged layer by layer in the downhole water injection device using a learning mode. The pressure peak of each layer in the downhole stratified water injection is then determined based on the debugging results of the learning mode. This data is then stored in a wavecode peak database for easy retrieval and modification later.

[0039] In one possible embodiment, the downhole water distributor returns a wavecode based on the received pressure peak value during communication.

[0040] For example, using pressure peak return ripple codes can maximize the conservation of downhole water distributor battery reserves and enhance the endurance of DIP code communication.

[0041] In one possible embodiment, the threshold is a dynamic value determined by combining data from the downhole water distributor with data from the surface controller.

[0042] Figure 3 This is a schematic diagram of a pressure wave control system provided in an embodiment of the present invention. The embodiment of the present invention provides a pressure wave control system, including:

[0043] The wavecode monitoring module is used to confirm the overall pressure data through the pressure and flow sensor; determine the pressure peak value through communication distance and learning mode; and monitor the pressure peak value in real time through the pressure and flow sensor.

[0044] The feedback control module is used to adjust the downhole water distributor based on changes in the pressure peak value; it tracks the data from the downhole water distributor and combines it with the data from the surface controller to form a closed-loop control.

[0045] In one possible embodiment, the wavecode monitoring module includes the downhole water distributor and a pressure and flow sensor.

[0046] In one possible embodiment, the downhole water distributor is installed in the downhole pipeline and is powered by a battery.

[0047] This invention also provides a computer storage medium storing a plurality of computer instructions, which are used to cause a computer to execute any of the methods described above.

[0048] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0049] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A pressure wave control method, characterized in that, include: The overall pressure data was confirmed using a pressure and flow sensor. Stress peaks were determined by communication distance and learning patterns; The initial pressure peak is determined based on the distance between the ground controller and the downhole water distributor. The downhole water injection device is then debugged layer by layer using the learning mode. The pressure peak of each layer in the downhole layered water injection is determined based on the debugging results of the learning mode. Ensure that the wavecode generated by the ground controller through the pressure peak is clear but about to dissipate before reaching the downhole water distributor; The pressure peak value is monitored in real time using the pressure and flow sensor. The downhole water distributor is adjusted by the change in the pressure peak value; The data from the downhole water distributor is tracked and combined with the data from the surface controller to form a closed-loop control.

2. The pressure wave control method according to claim 1, characterized in that, The overall pressure data is a dataset collected by running the wellhead regulating valve and downhole nozzle from their current state to full closure.

3. The pressure wave control method according to claim 1, characterized in that, The downhole water distributor returns a wavecode based on the received pressure peak value during communication.

4. The pressure wave control method according to claim 3, characterized in that, The pressure peak is a dynamic value determined by combining data from the downhole water distributor and data from the surface controller.

5. A pressure wave control system, characterized in that, include: The wavy code monitoring module is used to confirm overall pressure data through a pressure and flow sensor; determine the pressure peak value through communication distance and learning mode; confirm the initial pressure peak value based on the distance between the ground controller and the downhole water distributor; perform layer-by-layer debugging in the downhole water injection device through the learning mode; determine the pressure peak value of each layer in the downhole layered water injection based on the debugging results of the learning mode; ensure that the wavy code generated by the ground controller through the pressure peak value is clear but about to dissipate before reaching the downhole water distributor; and monitor the pressure peak value in real time through the pressure and flow sensor. The feedback control module is used to adjust the downhole water distributor based on changes in the pressure peak value; it tracks the data from the downhole water distributor and combines it with the data from the surface controller to form a closed-loop control.

6. The pressure wave control system according to claim 5, characterized in that, The wavecode monitoring module includes the downhole water distributor and the pressure and flow sensor.

7. The pressure wave control system according to claim 6, characterized in that, The downhole water distributor is installed in the downhole pipeline and is powered by a battery.

8. A computer storage medium, characterized in that, The computer storage medium stores a plurality of computer instructions, which are used to cause the computer to execute the pressure wave control method according to any one of claims 1-4.

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