Downhole drilling pump pressure control method and device, electronic equipment and pump pressure control system

Abstract

The invention provides a well drilling underground pump pressure control method and device, electronic equipment and a pump pressure control system, and relates to the technical field of petroleum engineering. The method comprises the steps that corresponding target downhole mechanical parameters of a drilling well at the current collection moment are obtained, wherein the corresponding target downhole mechanical parameters of the drilling well at the current collection moment comprise the actual pumping pressure of the drilling well at the current collection moment; if the actual pump pressure at the current collection moment is smaller than or equal to the preset pump pressure, prediction is conducted based on the target underground mechanical parameters corresponding to the current collection moment, the pump pressure of the well drilling at the preset moment is obtained, and early warning information is output under the condition that the pump pressure at the preset moment is larger than the preset pump pressure; if the actual pump pressure at the current collection moment is larger than the preset pump pressure, the pressure relief device is controlled to be started, and the step of obtaining the corresponding target underground mechanical parameters of the well drilling at the current collection moment is executed till the actual pump pressure at the current collection moment is smaller than or equal to the preset pump pressure. The safety of the drilling operation process can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil engineering, and in particular, to a method, device, electronic device and pump pressure control system for controlling the pump pressure downhole during drilling. Background Art

[0002] In conventional drilling operations (such as drilling, reaming, circulating, etc.), wellbore instability or cuttings bed blocking the wellbore annulus are common causes for the sharp increase in the pump pressure downhole during drilling.

[0003] These abnormal conditions may, in the mildest case, trigger phenomena such as lost circulation, drill pipe sticking or lifting the drill pipe, and in the worst case, may lead to the complete blockage of the wellbore annulus, thus resulting in a serious pipe sticking accident.

[0004] In the face of emergency situations such as abnormal blockage of the wellbore annulus, it is usually necessary for experienced drillers on site to quickly handle it to prevent the downhole situation from further deteriorating.

[0005] However, in actual operations, there are situations where the drillers lack sufficient handling experience, or the drillers need to operate multiple devices simultaneously, so it is difficult to respond to such downhole abnormal conditions in a timely and effective manner, resulting in a low safety level during the drilling operation. Summary of the Invention

[0006] The purpose of the present invention is to provide a method, device, electronic device and pump pressure control system for controlling the pump pressure downhole during drilling, aiming to improve the safety during the drilling operation. The many technical effects that can be produced by the preferred technical solutions among the many technical solutions provided by the present invention are described in detail below.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] In a first aspect, the present invention provides a method for controlling the pump pressure downhole during drilling, which is applied to a pump pressure control system. The pump pressure control system includes a pressure relief device for reducing the pump pressure downhole during drilling. The method includes:

[0009] Obtain the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling. The target downhole mechanical parameters corresponding to the current acquisition moment include the actual pump pressure of the drilling at the current acquisition moment;

[0010] If the actual pump pressure at the current acquisition moment is less than or equal to a preset pump pressure, then predict based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at a preset moment. And in the case where the pump pressure at the preset moment is greater than the preset pump pressure, output a warning message. The current acquisition moment is earlier than the preset moment. The warning message includes the target downhole mechanical parameters corresponding to the current acquisition moment and the pump pressure at the preset moment;

[0011] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, control the pressure relief device to start, and jump to the step of obtaining the target downhole mechanical parameters corresponding to the well drilling at the current acquisition moment for execution until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then control the pressure relief device to close.

[0012] Further, the pump pressure control system further includes a measurement-while-drilling device, and the measurement-while-drilling device is arranged on a drill bit for operating in the well drilling;

[0013] Obtaining the target downhole mechanical parameters corresponding to the well drilling at the current acquisition moment includes:

[0014] Collect the initial downhole mechanical parameters corresponding to the well drilling at the current acquisition moment through the measurement-while-drilling device;

[0015] Perform preset processing on the initial downhole mechanical parameters to obtain the target downhole mechanical parameters corresponding to the well drilling at the current acquisition moment, and the preset processing includes interpolation processing and cleaning processing.

[0016] Further, if the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, then perform prediction based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the well drilling at the preset moment, including:

[0017] If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, then perform prediction based on the target downhole mechanical parameters corresponding to the current acquisition moment through a target pump pressure prediction model to obtain the pump pressure of the well drilling at the preset moment, wherein the target pump pressure prediction model is obtained according to the following process:

[0018] Obtain a plurality of training samples, each of the training samples includes the first downhole mechanical parameters corresponding to the well drilling at the first historical moment and the pump pressure of the well drilling at the second historical moment, the first historical moment is earlier than the second historical moment, and the first historical moments of each of the training samples are different;

[0019] Train an initial pump pressure prediction model according to the plurality of training samples to obtain the target pump pressure prediction model, and the initial pump pressure prediction model is constructed according to the mechanism model and the lead prediction algorithm of the well drilling.

[0020] Further, the pump pressure control system further includes a controller and a remote control device, the controller is communicatively connected with the remote control device, the pressure relief device includes a servo motor and a pressure relief valve, and the remote control device is electrically connected with the servo motor;

[0021] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, controlling the pressure relief device to start includes:

[0022] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the controller sends a first pressure relief instruction to the remote control device, and the remote control device is used to control the servo motor to start, and drives the pressure relief valve to open through the servo motor.

[0023] Further, the remote control device includes a servo and a programmable logic controller, the servo is communicatively connected to the programmable logic controller, and the servo is electrically connected to the servo motor;

[0024] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, sending a first pressure relief instruction to the remote control device through the controller includes:

[0025] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the controller sends the first pressure relief instruction to the programmable logic controller, and the programmable logic controller is used to forward the first pressure relief instruction to the servo.

[0026] Further, the method further includes:

[0027] Receiving a second pressure relief instruction, where the second pressure relief instruction includes a target pump pressure;

[0028] In response to the second pressure relief instruction, controlling the pressure relief device to start, jumping to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling, until the actual pump pressure at the current acquisition moment is equal to the target pump pressure;

[0029] Controlling the pressure relief device to close.

[0030] Further, after obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling, the method further includes:

[0031] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, outputting an alarm message, where the alarm message includes a first-level alarm message, a second-level alarm message, and a third-level alarm message;

[0032] The if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, outputting an alarm message includes:

[0033] Subtracting the preset pump pressure from the actual pump pressure at the current acquisition moment to obtain a pump pressure difference;

[0034] If the pump pressure difference is greater than a first preset value, outputting a first-level alarm message;

[0035] If the pump pressure difference is greater than a second preset value and less than or equal to the first preset value, a secondary alarm message is output;

[0036] If the pump pressure difference is greater than a third preset value and less than or equal to the second preset value, a tertiary alarm message is output;

[0037] Wherein, the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value.

[0038] In a second aspect, the present invention provides a downhole pump pressure control device for a drilling rig, which is applied to a pump pressure control system. The pump pressure control system includes a pressure relief device for reducing the pump pressure downhole during drilling. The device includes:

[0039] An acquisition module for acquiring target downhole mechanical parameters corresponding to the current acquisition moment of the drilling. The target downhole mechanical parameters corresponding to the current acquisition moment include the actual pump pressure of the drilling at the current acquisition moment;

[0040] An early warning module for predicting the pump pressure of the drilling at a preset moment based on the target downhole mechanical parameters corresponding to the current acquisition moment if the actual pump pressure at the current acquisition moment is less than or equal to a preset pump pressure, and outputting an early warning message if the pump pressure at the preset moment is greater than the preset pump pressure. The current acquisition moment is earlier than the preset moment, and the early warning message includes the target downhole mechanical parameters corresponding to the current acquisition moment and the pump pressure at the preset moment;

[0041] A control module for controlling the pressure relief device to start if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, and jumping to the step of acquiring the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling for execution, until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then controlling the pressure relief device to close.

[0042] In a third aspect, the present invention provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the above-mentioned downhole pump pressure control method for a drilling rig is implemented.

[0043] In a fourth aspect, the present invention provides a pump pressure control system, including:

[0044] A pressure relief device for reducing the pump pressure downhole during drilling;

[0045] The electronic device described in the third aspect.

[0046] The downhole pump pressure control method, device, electronic equipment and pump pressure control system provided by the present invention obtain the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling (including the actual pump pressure of the drilling at the current acquisition moment). If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, prediction is performed based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at the preset moment, and an early warning message is output when the pump pressure at the preset moment is greater than the preset pump pressure. If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the pressure relief device is controlled to start, and the process jumps to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling for execution until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then the pressure relief device is controlled to close. Through the above steps, when the actual pump pressure at the current acquisition moment is normal, real-time early warning of downhole complex working conditions can be realized during the drilling operation. Moreover, when the actual pump pressure at the current acquisition moment is abnormal, necessary auxiliary intervention measures (i.e., controlling the pressure relief device to start) are executed, thereby improving the safety during the drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0048] Figure 1 is a flowchart of the downhole pump pressure control method provided by an embodiment of the present application;

[0049] Figure 2 is a schematic diagram of the fluid flow direction when the pressure relief device starts provided by an embodiment of the present application;

[0050] Figure 3 is a schematic structural diagram of the downhole pump pressure control device provided by an embodiment of the present application;

[0051] Figure 4 is a schematic hardware structure diagram of the electronic equipment provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] It should be noted that although the functional modules are divided in the schematic diagram of the device and the logical sequence is shown in the flowchart, in some cases, the steps shown or described can be executed in a different module division from that in the device or a different sequence from that in the flowchart. Terms such as "first" and "second" in the description, claims, and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0055] First, several terms involved in this application are analyzed as follows:

[0056] Drilling: It is an area where operations are carried out underground through drilling techniques, usually for extracting underground resources (such as oil, natural gas, minerals, water sources, etc.) or for geological exploration, etc. Drilling rigs, drill bits and other equipment are used to drill into underground rock formations to form vertical or inclined wellbores.

[0057] Mud pump: It is a very important device in drilling operations. It is mainly used to transport fluid (i.e., mud, or drilling fluid) from the storage tank to the drilling platform, and through the drill string to the wellbore, and bring back the drilling fluid and cuttings to the ground for circulation. The fluid can not only cool and lubricate the drill bit, but also help remove the cuttings at the bottom of the well and maintain the stability of the wellbore.

[0058] Pump pressure: It refers to the pressure exerted on the fluid by the mud pump during the drilling process, which can be used to push the fluid through the drill string, drill bit and downhole equipment.

[0059] Based on this, the embodiments of this application provide a method, device, electronic device and pump pressure control system for controlling the pump pressure downhole during drilling, aiming to improve the safety during the drilling operation.

[0060] The method, device, electronic device and pump pressure control system for controlling the pump pressure downhole during drilling provided by the embodiments of this application are specifically described through the following embodiments. First, the method for controlling the pump pressure downhole during drilling in the embodiments of this application is described.

[0061] The embodiments of this application can acquire and process relevant data based on artificial intelligence technology. Among them, artificial intelligence (AI) is a theory, method, technology and application system that uses digital computers or machines controlled by digital computers to simulate, extend and expand human intelligence, perceive the environment, acquire knowledge and use knowledge to obtain the best results.

[0062] The basic technologies of artificial intelligence generally include technologies such as sensors, dedicated artificial intelligence chips, cloud computing, distributed storage, big data processing technologies, operation / interaction systems, and mechatronics. The software technologies of artificial intelligence mainly include several major directions such as computer vision technology, robotics, biometric technology, speech processing technology, natural language processing technology, and machine learning / deep learning.

[0063] The downhole pump pressure control method provided by the embodiments of this application relates to the technical field of petroleum engineering. The downhole pump pressure control method provided by the embodiments of this application can be applied to a terminal, or to a server side, or can also be software running on a terminal or a server side. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc.; the server side can be configured as an independent physical server, or can be configured as a server cluster or a distributed system composed of multiple physical servers, or can also be configured as a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks, and big data and artificial intelligence platforms; the software can be an application implementing the downhole pump pressure control method, etc., but is not limited to the above forms.

[0064] This application can be used in many general-purpose or special-purpose computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet-type devices, multi-processor systems, microprocessor-based systems, set-top boxes, programmable consumer electronic devices, small computers, large computers, distributed computing environments including any of the above systems or devices, and so on. This application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. This application can also be practiced in a distributed computing environment, where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0065] Figure 1 is the flowchart of the downhole pump pressure control method provided by the embodiments of this application. Please refer to Figure 1 The embodiments of this application provide a downhole pump pressure control method, which is applied to a pump pressure control system. The pump pressure control system includes a pressure relief device, and the pressure relief device is used to reduce the pump pressure downhole during drilling. Figure 1 The method in

[0066] Step 101: Obtain the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling. The target downhole mechanical parameters corresponding to the current acquisition moment include the actual pump pressure of the drilling at the current acquisition moment.

[0067] Step 102: If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, then make a prediction based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at the preset moment. And in the case where the pump pressure at the preset moment is greater than the preset pump pressure, output a warning message. The current acquisition moment is earlier than the preset moment. The warning message includes the target downhole mechanical parameters corresponding to the current acquisition moment and the pump pressure at the preset moment.

[0068] Step 103: If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, then control the pressure relief device to start, and jump to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling to execute until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then control the pressure relief device to close.

[0069] During the drilling operation, it is necessary to control the pump pressure in the drilling well in real time to reduce the possibility of safety accidents caused by too high pump pressure in the drilling well. Specifically, the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling can be obtained. Among them, the current acquisition moment is not a fixed moment. The target downhole mechanical parameters can include parameters such as the inlet and outlet flow rates of the drilling, the torque of the drill bit, the rotational speed of the drill bit, the weight on bit of the drill bit, the pump strokes, and the actual pump pressure of the drilling at the current acquisition moment.

[0070] After obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling, the relative relationship between the actual pump pressure and the preset pump pressure at the current acquisition moment can be determined. Among them, the preset pump pressure can be determined according to the average value of all historical pump pressures of the drilling within the dynamic sliding window. If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, the safety risk in the drilling at the current acquisition moment is relatively low. At this time, the pump pressure of the drilling downhole at a certain moment after the current acquisition moment can be predicted, so as to further improve the safety of the drilling operation process. Specifically, based on the target downhole mechanical parameters corresponding to the current acquisition moment, the pump pressure of the drilling at the preset moment can be predicted. The preset moment needs to be later than the current acquisition moment, and the time interval between the current acquisition moment and the preset moment can be set in advance according to the actual situation. Exemplarily, through the pre-trained target pump pressure prediction model, based on the target downhole mechanical parameters corresponding to the current acquisition moment, the pump pressure of the drilling at the preset moment can be predicted. Or, by matching the target downhole mechanical parameters corresponding to the current acquisition moment with the historical data, the pump pressure of the drilling corresponding to the target downhole mechanical parameters at the preset moment can be determined. The historical data can include the historical target downhole mechanical parameters and the historical pump pressures corresponding to the historical target downhole mechanical parameters.

[0071] Subsequently, the pump pressure at the preset moment can be compared with the preset pump pressure to determine the relative relationship between the pump pressure at the preset moment and the preset pump pressure. Specifically, if the pump pressure at the preset moment is less than or equal to the preset pump pressure, the possibility of abnormal conditions occurring in the drilling at the preset moment is relatively low, and no early warning is required. If the pump pressure at the preset moment is greater than the preset pump pressure, there is a safety risk that the pump pressure of the drilling at the preset moment is too high. Therefore, an early warning message is output, and at the same time, a prompt is made by means such as red dot warning. The early warning message includes the target downhole mechanical parameters corresponding to the current acquisition moment and the pump pressure at the preset moment.

[0072] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, there is an abnormality in the drilling at the current acquisition moment. Therefore, it is necessary to control the pressure relief device to start to reduce the pump pressure of the drilling. After the pressure relief device is started, the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling can be re-obtained, and when the actual pump pressure at the re-acquired current acquisition moment is less than or equal to the preset pump pressure, the pressure relief device can be controlled to close. It should be noted that when re-obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling, the current acquisition moment here is not the same as the current acquisition moment in step 101, and the obtained target downhole mechanical parameters may be different.

[0073] It should be noted that when the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the steps when the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure can also be referred to, and prediction is performed based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at the preset moment, and then early warning is performed according to the pump pressure at the preset moment.

[0074] Figure 2 FIG. is a schematic diagram of the fluid flow direction when the pressure relief device provided in the embodiment of the present application is started. Please refer to Figure 2 . The mud pump 1 is used to transport fluid to the drilling. When the pressure relief device 5 is closed, the fluid flows from the mud pump 1 through the first flowmeter 2, the first stop valve 3, and into the water tank 4. When the pressure relief device 5 is started, the fluid flows from the mud pump 1 through the first flowmeter 2, the first stop valve 3, and into the water tank 4, and, due to the start of the pressure relief device 5, the fluid can also flow from the mud pump 1 through the pressure relief device 5, the second flowmeter 6, the second stop valve 7, and finally into the water tank 4, thereby quickly reducing the pump pressure in the downhole of the drilling.

[0075] Steps 101 to 103 illustrated in the embodiment of the present application, by obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling (including the actual pump pressure at the current acquisition moment of the drilling), if the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, prediction is performed based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at the preset moment, and when the pump pressure at the preset moment is greater than the preset pump pressure, an early warning message is output. If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the pressure relief device is controlled to start, and the process jumps to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling and executes until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and the pressure relief device is controlled to close. Through the above steps, when the actual pump pressure at the current acquisition moment is normal, real-time early warning of downhole complex working conditions can be realized during the drilling operation, and when the actual pump pressure at the current acquisition moment is abnormal, necessary auxiliary intervention measures (i.e., controlling the pressure relief device to start) are executed, thereby improving the safety during the drilling operation.

[0076] In some embodiments, the pump pressure control system further includes a measurement-while-drilling device, and the measurement-while-drilling device is disposed on the drill bit for operating in the drilling;

[0077] Obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling includes:

[0078] Collecting the initial downhole mechanical parameters corresponding to the current acquisition moment of the drilling through the measurement-while-drilling device;

[0079] Perform preset processing on the initial downhole mechanical parameters to obtain the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling. The preset processing includes interpolation processing and cleaning processing.

[0080] The pump pressure control system may further include a measurement-while-drilling device. Among them, the measurement-while-drilling device may include multiple sensors (such as force sensors, temperature sensors, accelerometers, and other sensors for measuring downhole mechanical parameters). The measurement-while-drilling device is arranged on the drill bit used for operation during drilling. Through the measurement-while-drilling device, the downhole mechanical parameters during the drilling operation, that is, the initial downhole mechanical parameters, can be collected in real time. Among them, the initial downhole mechanical parameters may include parameters such as the inlet and outlet flow rates of the drilling before processing, the torque of the drill bit before processing, the rotational speed of the drill bit before processing, the weight on bit of the drill bit before processing, the pump strokes per minute before processing, and the actual pump pressure of the drilling before processing. And, based on the WITSML standard protocol communication standard, the pump pressure control system can obtain the initial downhole mechanical parameters corresponding to the current acquisition moment of the drilling collected by the measurement-while-drilling device.

[0081] It can be understood that there may be invalid values, outliers, or missing values in the initial downhole mechanical parameters collected by the measurement-while-drilling device. If the pump pressure at a preset moment of the drilling is predicted based on the initial downhole mechanical parameters, the accuracy of the predicted pump pressure may be relatively low. Therefore, preset processing can be performed on the initial downhole mechanical parameters corresponding to the current acquisition moment of the drilling collected by the measurement-while-drilling device to obtain the target downhole mechanical parameters. The preset processing includes interpolation processing and cleaning processing. In this way, through interpolation processing, the missing values in the initial downhole mechanical parameters corresponding to the current acquisition moment can be filled. Through cleaning processing, the invalid values and outliers in the initial downhole mechanical parameters corresponding to the current acquisition moment can be filtered out. In this way, the accuracy of the pump pressure of the subsequent predicted drilling at the preset moment can be improved.

[0082] In addition, unit calibration can also be performed in advance. In the case where the initial downhole mechanical parameters do not conform to the calibrated measurement units, conversion processing of the measurement units can be performed on the initial downhole mechanical parameters corresponding to the current acquisition moment.

[0083] In some embodiments, if the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, predicting the pump pressure of the drilling at the preset moment based on the target downhole mechanical parameters corresponding to the current acquisition moment includes:

[0084] If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, then predict the pump pressure of the drilling at the preset moment through the target pump pressure prediction model based on the target downhole mechanical parameters corresponding to the current acquisition moment, where the target pump pressure prediction model is obtained according to the following process:

[0085] Obtain a plurality of training samples, each of the training samples including the first downhole mechanical parameters corresponding to the well drilling at the first historical moment, and the pump pressure of the well drilling at the second historical moment, the first historical moment being earlier than the second historical moment, and the first historical moments of each of the training samples being different;

[0086] Train an initial pump pressure prediction model according to the plurality of training samples to obtain the target pump pressure prediction model, the initial pump pressure prediction model being constructed according to the mechanism model and the leading prediction algorithm of the well drilling.

[0087] If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, the pump pressure of the well drilling at the preset moment can be predicted by the pre-trained target pump pressure prediction model. Specifically, through the target pump pressure prediction model, prediction can be performed based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the well drilling at the preset moment. Among them, the target pump pressure prediction model can be pre-constructed. When constructing the target pump pressure prediction model, a plurality of training samples can be obtained. Each training sample includes the first downhole mechanical parameters corresponding to the well drilling at the first historical moment, and the pump pressure of the well drilling at the second historical moment. The first historical moments of each training sample are different, the first historical moment is earlier than the second historical moment, and the time interval between the first historical moment and the second historical moment can be preset according to the actual situation.

[0088] The mechanism model of the well drilling can include models for simulating the well drilling operation process such as a geomechanics model, a drilling fluid dynamics model, a thermodynamics and heat transfer model, a wellbore stability model, a drilling efficiency and loss model, a drilling fluid dynamics model, and so on. The leading prediction algorithm can adopt algorithms such as a regression analysis algorithm or a neural network. According to the mechanism model of the well drilling, the leading prediction algorithm, and the LightGBM algorithm, an initial pump pressure prediction model can be constructed. In addition, expert knowledge can also be introduced for constructing the initial pump pressure prediction model. Then, according to the plurality of training samples, the initial pump pressure prediction model can be trained to obtain the target pump pressure prediction model. That is, taking the first downhole mechanical parameters corresponding to the first historical moment as input values and taking the pump pressure of the well drilling at the second historical moment as output values, the initial pump pressure prediction model is trained to obtain the target pump pressure prediction model. In this way, the prediction efficiency and prediction accuracy of the pump pressure of the well drilling can be improved.

[0089] In some embodiments, after obtaining the target downhole mechanical parameters corresponding to the well drilling at the current acquisition moment, the method further includes:

[0090] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, an alarm message is output, where the alarm message includes a first-level alarm message, a second-level alarm message, and a third-level alarm message;

[0091] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, an alarm message is output, including:

[0092] Subtract the preset pump pressure from the actual pump pressure at the current acquisition moment to obtain a pump pressure difference;

[0093] If the pump pressure difference is greater than a first preset value, a first-level alarm message is output;

[0094] If the pump pressure difference is greater than a second preset value and the pump pressure difference is less than or equal to the first preset value, a second-level alarm message is output;

[0095] If the pump pressure difference is greater than a third preset value and the pump pressure difference is less than or equal to the second preset value, a third-level alarm message is output;

[0096] Wherein, the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value.

[0097] After obtaining the target downhole mechanical parameters corresponding to the drilling at the current acquisition moment, if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, an alarm message can be output to warn that there is an abnormality in the drilling at the current acquisition moment. Specifically, the alarm message can be divided into a first-level alarm message, a second-level alarm message, and a third-level alarm message. Moreover, the urgency level corresponding to the first-level alarm message is higher than the urgency level corresponding to the second-level alarm message, and the urgency level corresponding to the second-level alarm message is higher than the urgency level corresponding to the third-level alarm message. Subtract the preset pump pressure from the actual pump pressure at the current acquisition moment to obtain a pump pressure difference. If the pump pressure difference is greater than a first preset value, a first-level alarm message is output. If the pump pressure difference is greater than a second preset value and the pump pressure difference is less than or equal to the first preset value, a second-level alarm message is output. If the pump pressure difference is greater than a third preset value and the pump pressure difference is less than or equal to the second preset value, a third-level alarm message is output. The first preset value is greater than the second preset value, the second preset value is greater than the third preset value, and the first preset value, the second preset value, and the third preset value are set based on the value of the preset pump pressure. Exemplarily, the first preset value can be equal to the product of a first preset ratio (such as 107.5%) and the value of the preset pump pressure, the second preset value can be equal to the product of a second preset ratio (such as 105%) and the value of the preset pump pressure, and the third preset value can be equal to the product of a third preset ratio (such as 102.5%) and the value of the preset pump pressure. At the same time, when outputting the alarm message, an audible and visual warning method can be used for prompting.

[0098] In addition, the pressure relief device can also be controlled according to the different levels of alarm information. Exemplarily, if a first-level alarm information is output, the pump pressure control system can immediately control the pressure relief device to start. If a second-level alarm information or a third-level alarm information is output, the pump pressure control system can control the pressure relief device to start after the alarm information is continuously output for a certain duration (for example, continuously output for five seconds).

[0099] Moreover, the alarm information can also be displayed to realize the visualization of the alarm information, so that the operator can timely discover the abnormal conditions existing in the drilling operation process. In addition, when there are large fluctuations in the target downhole mechanical parameters corresponding to the current acquisition moment, alarm information can also be output to warn of the current abnormal conditions, further improving the safety of the drilling operation process.

[0100] In some embodiments, the pump pressure control system further includes a controller and a remote control device. The controller is communicatively connected to the remote control device. The pressure relief device includes a servo motor and a pressure relief valve. The remote control device is electrically connected to the servo motor;

[0101] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, controlling the pressure relief device to start includes:

[0102] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the controller sends a first pressure relief instruction to the remote control device. The remote control device is used to control the servo motor to start, and the servo motor drives the pressure relief valve to open.

[0103] The pump pressure control system further includes a controller and a remote control device. The controller is communicatively connected to the remote control device. For example, the controller and the remote control device can communicate according to the Transmission Control Protocol / Internet Protocol (TCP / IP). The pressure relief device includes a servo motor and a pressure relief valve. The remote control device is electrically connected to the servo motor and adopts an armored structure to ensure the power supply of the servo motor. After predicting the pump pressure of the drilling at the preset moment, if the pump pressure at the preset moment is greater than the preset pump pressure, the pressure relief device is controlled to start. Specifically, the controller can send a first pressure relief instruction to the remote control device, and then the remote control device controls the servo motor to start according to the first pressure relief instruction. The first pressure relief instruction is used to control the pressure relief device to start. After the servo motor starts, the servo motor can drive the pressure relief valve to open. At this time, the fluid can flow through the pressure relief device, the second flowmeter, and the second stop valve from the mud pump at the same time, and finally flow into the water tank, thereby quickly reducing the pump pressure in the drilling well.

[0104] In some embodiments, the remote control device includes a server and a programmable logic controller. The server is communicatively connected to the programmable logic controller, and the server is electrically connected to the servo motor.

[0105] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, sending a first pressure relief instruction to the remote control device through the controller includes:

[0106] If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, sending a first pressure relief instruction to the programmable logic controller through the controller, and the programmable logic controller is configured to forward the first pressure relief instruction to the server.

[0107] The remote control device includes a server and a programmable logic controller. The server is communicatively connected to the programmable logic controller. For example, communication between the server and the programmable logic controller can be carried out according to the CANopen over EtherCAT protocol. The server is electrically connected to the servo motor. Specifically, if the pump pressure at the preset moment is greater than the preset pump pressure, a first pressure relief instruction can be sent to the programmable logic controller through the controller, and then the programmable logic controller forwards the first pressure relief instruction to the server. Through the above steps, the pump pressure control system can transmit the first pressure relief instruction to the servo motor through the controller to achieve remote pressure relief operation.

[0108] In some embodiments, the method further includes:

[0109] Receiving a second pressure relief instruction, where the second pressure relief instruction includes a target pump pressure;

[0110] In response to the second pressure relief instruction, controlling the pressure relief device to start, and jumping to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the well drilling until the actual pump pressure at the current acquisition moment is equal to the target pump pressure;

[0111] Controlling the pressure relief device to close.

[0112] Specifically, the pump pressure control system can also receive a second pressure relief instruction. Exemplarily, the controller in the pump pressure control system provides a human-machine interface, and through the human-machine interface, a second pressure relief instruction including the target pump pressure can be received. In response to the second pressure relief instruction, the pump pressure control system can control the pressure relief device to start and jump to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the well drilling. In this way, the actual pump pressure at the current acquisition moment of the well drilling can be obtained. When the actual pump pressure at the current acquisition moment is equal to the target pump pressure, the pressure relief device is controlled to close.

[0113] Alternatively, through a man-machine interaction interface, a second pressure relief instruction including the target pump pressure and the target opening degree of the pressure relief valve can be received. According to the target opening degree of the pressure relief valve, the opening degree of the pressure relief valve in the pressure relief device can be adjusted to the target opening degree so that the actual pump pressure at the current acquisition moment is equal to the target pump pressure. Through the foregoing steps, the pump pressure of the drilling can be accurately controlled.

[0114] The following will give an example of the downhole pump pressure control method provided by the embodiments of the present application.

[0115] Step 1: Install the pressure relief device at any position on the riser pipe used to connect the outlet of the mud pump and the water tank;

[0116] Step 2: The controller is connected to the remote control device, and a valve reset instruction is sent to control the pressure relief valve in the pressure relief device to close. Subsequently, the function of real-time monitoring can be enabled to achieve real-time monitoring of the target downhole mechanical parameters.

[0117] Step 3: In the case of enabling the automatic control mode of the pressure relief device, if the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, prediction is performed based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at the preset moment. If the pump pressure at the preset moment is greater than the preset pump pressure, a warning message is output and a warning is given by means of sound and light; if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the pressure relief device is controlled to start, thereby reducing the actual pump pressure of the drilling, and the pressure relief device is controlled to close when the actual pump pressure of the drilling is less than or equal to the preset pump pressure;

[0118] Step 4: In the case of not enabling the automatic control mode of the pressure relief device, a second pressure relief instruction can be received, and the opening degree of the pressure relief valve is controlled according to the second pressure relief instruction to achieve accurate control of the pump pressure of the drilling.

[0119] The downhole pump pressure control method provided by the embodiments of the present application does not require manual monitoring of real-time data, but uses artificial intelligence to monitor real-time data, realizes instant warning when downhole mechanical parameters are abnormal, and realizes rapid pressure reduction when the actual pump pressure of the drilling is abnormal, improving the timeliness of risk disposal. Moreover, since there is no need for operators to directly intervene at the drilling operation site, but remote control is used for pressure relief operation, the safety of the drilling operation process is improved.

[0120] Figure 3 It is a schematic structural diagram of the downhole pump pressure control device provided by the embodiments of the present application. Please refer to Figure 3。An embodiment of this application also provides a downhole pump pressure control device 300 for a drilling operation, which is applied to a pump pressure control system. The pump pressure control system includes a pressure relief device for reducing the pump pressure downhole during drilling. The downhole pump pressure control device 300 can implement the above-mentioned downhole pump pressure control method. The device 300 includes:

[0121] An acquisition module 301 for acquiring the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling operation. The target downhole mechanical parameters corresponding to the current acquisition moment include the actual pump pressure of the drilling operation at the current acquisition moment.

[0122] An early warning module 302 for predicting the pump pressure of the drilling operation at a preset moment based on the target downhole mechanical parameters corresponding to the current acquisition moment if the actual pump pressure at the current acquisition moment is less than or equal to a preset pump pressure, and outputting an early warning message if the pump pressure at the preset moment is greater than the preset pump pressure. The current acquisition moment is earlier than the preset moment. The early warning message includes the target downhole mechanical parameters corresponding to the current acquisition moment and the pump pressure at the preset moment.

[0123] A control module 303 for controlling the activation of the pressure relief device if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, and jumping to the step of acquiring the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling operation until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then controlling the pressure relief device to close.

[0124] In some embodiments, the acquisition module 301 includes:

[0125] An acquisition sub-module for acquiring the initial downhole mechanical parameters corresponding to the current acquisition moment of the drilling operation through the measurement-while-drilling device.

[0126] A processing sub-module for performing a preset processing on the initial downhole mechanical parameters to obtain the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling operation. The preset processing includes interpolation processing and cleaning processing.

[0127] In some embodiments, the early warning module 302 includes:

[0128] A prediction sub-module for predicting the pump pressure of the drilling operation at a preset moment based on the target downhole mechanical parameters corresponding to the current acquisition moment through a target pump pressure prediction model if the actual pump pressure at the current acquisition moment is less than or equal to a preset pump pressure. The target pump pressure prediction model is obtained according to the following process:

[0129] Obtain a plurality of training samples, each of the training samples including the first downhole mechanical parameters corresponding to the drill well at a first historical moment and the pump pressure of the drill well at a second historical moment, the first historical moment being earlier than the second historical moment, and the first historical moments of each of the training samples being different;

[0130] Train an initial pump pressure prediction model according to the plurality of training samples to obtain the target pump pressure prediction model, the initial pump pressure prediction model being constructed according to the mechanism model and the leading prediction algorithm of the drill well.

[0131] In some embodiments, the control module 303 includes:

[0132] A first control sub-module, configured to, if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, send a first pressure relief instruction to the remote control device through the controller, the remote control device being configured to control the servo motor to start and drive the pressure relief valve to open through the servo motor.

[0133] In some embodiments, the first control sub-module includes:

[0134] A sending unit, configured to, if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, send a first pressure relief instruction to the programmable logic controller through the controller, the programmable logic controller being configured to forward the first pressure relief instruction to the server.

[0135] In some embodiments, the drill well downhole pump pressure control device 300 further includes an execution module, and the execution module includes:

[0136] A receiving sub-module, configured to receive a second pressure relief instruction, the second pressure relief instruction including a target pump pressure;

[0137] A second control sub-module, configured to, in response to the second pressure relief instruction, control the pressure relief device to start and jump to the step of obtaining the target downhole mechanical parameters corresponding to the drill well at the current acquisition moment for execution until the actual pump pressure at the current acquisition moment is equal to the target pump pressure;

[0138] A third control sub-module, configured to control the pressure relief device to close.

[0139] In some embodiments, the drill well downhole pump pressure control device 300 further includes:

[0140] An alarm module, configured to output an alarm message if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, wherein the alarm message includes a first-level alarm message, a second-level alarm message, and a third-level alarm message;

[0141] The alarm module includes:

[0142] An operator module is configured to subtract the preset pump pressure from the actual pump pressure at the current acquisition moment to obtain a pump pressure difference;

[0143] A first output sub-module is configured to output a first-level alarm message if the pump pressure difference is greater than a first preset value;

[0144] A second output sub-module is configured to output a second-level alarm message if the pump pressure difference is greater than a second preset value and less than or equal to the first preset value;

[0145] A third output sub-module is configured to output a third-level alarm message if the pump pressure difference is greater than a third preset value and less than or equal to the second preset value;

[0146] Wherein, the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value.

[0147] The specific implementation manner of the downhole pump pressure control device 300 for drilling is basically the same as the specific embodiments of the above-mentioned downhole pump pressure control method for drilling, and will not be elaborated herein.

[0148] The embodiment of the present application further provides an electronic device. The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the above-mentioned downhole pump pressure control method for drilling is implemented. The electronic device can be any intelligent terminal including a tablet computer, an in-vehicle computer, etc.

[0149] Figure 4 is a schematic hardware structure diagram of the electronic device provided by the embodiment of the present application. Please refer to Figure 4 .

[0150] The electronic device includes:

[0151] A processor 401, which can be implemented in a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, etc., and is configured to execute relevant programs to implement the technical solutions provided by the embodiments of the present application;

[0152] The memory 402 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM), etc. The memory 402 can store an operating system and other application programs. When implementing the technical solutions provided in the embodiments of this specification through software or firmware, the relevant program codes are stored in the memory 402 and are called by the processor 401 to execute the well drilling downhole pump pressure control method of the embodiments of this application;

[0153] The input / output interface 403 is used to implement information input and output;

[0154] The communication interface 404 is used to implement communication interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.);

[0155] The bus 405 transmits information between the various components of the device (such as the processor 401, the memory 402, the input / output interface 403, and the communication interface 404);

[0156] Among them, the processor 401, the memory 402, the input / output interface 403, and the communication interface 404 achieve communication connections with each other inside the device through the bus 405.

[0157] The embodiments of this application also propose a pump pressure control system, including:

[0158] A pressure relief device, which is used to reduce the pump pressure in the well drilling downhole;

[0159] The above-mentioned electronic device.

[0160] Specifically, the pump pressure control system includes a pressure relief device and an electronic device. Among them, the electronic device can control the pump pressure in the well drilling downhole. The pressure relief device can be installed at the well drilling site, and the pressure relief device is connected to the mud pump. The mud pump is used to transport fluid to the well drilling, and the pressure relief device is used to reduce the pump pressure in the well drilling downhole. The pressure relief device includes a servo motor, inlet and outlet unions, a pressure relief valve, and a skid-mounted transport rack. The inlet and outlet unions include an outlet union and an inlet union. Both the outlet union and the inlet union are made of high-strength and corrosion- and high-temperature-resistant materials to improve the durability and safety of the inlet and outlet unions. The outlet union is a three-way with a dead end. The skid-mounted transport rack is made of high-strength and corrosion- and high-temperature-resistant materials to facilitate the transportation and installation of the pressure relief device.

[0161] In addition, the pump pressure control system further includes a controller and a remote control device. The remote control device includes a servo, a programmable logic controller, and a built-in card power supply unit. The servo motor is electrically connected to the servo, and the power supply of the servo motor is ensured through an armored structure, and the servo motor can be driven within a short time. The servo communicates with the controller using the TCP / IP protocol to ensure that the instructions sent by the controller can be transmitted to the servo motor in real time, realizing remote pressure relief operation. The servo communicates with the programmable logic controller using the CANopen over EtherCAT protocol. Through the pump pressure control system, the safety of the drilling operation process can be improved.

[0162] The embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the above-mentioned downhole pump pressure control method for drilling.

[0163] As a non-transitory computer-readable storage medium, the memory can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory may optionally include a memory remotely set relative to the processor, and these remote memories can be connected to the processor through a network. Examples of the above-mentioned network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0164] The downhole pump pressure control method, device, electronic device, and pump pressure control system proposed in the present application obtain the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling (including the actual pump pressure of the drilling at the current acquisition moment). If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, prediction is performed based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at the preset moment, and when the pump pressure at the preset moment is greater than the preset pump pressure, a warning message is output. If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the pressure relief device is controlled to start, and the process jumps to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling and executes until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then the pressure relief device is controlled to close. Through the above steps, when the actual pump pressure at the current acquisition moment is normal, real-time warning of downhole complex working conditions can be realized during the drilling operation process. And when the actual pump pressure at the current acquisition moment is abnormal, necessary auxiliary intervention measures (i.e., controlling the pressure relief device to start) are executed, thereby improving the safety during the drilling operation process.

[0165] The embodiments described in the embodiments of the present application are to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art know that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0166] Those skilled in the art can understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than those shown, or combine some steps, or different steps.

[0167] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0168] Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, and their appropriate combinations.

[0169] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0170] It should be understood that in this application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the relationship between associated objects and indicates that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Here, A and B can be singular or plural. The character " / " generally indicates an "or" relationship between the associated objects before and after. "At least one (item) of the following" or a similar expression means any combination of these items, including any combination of single items or plural items. For example, at least one (item) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0171] In several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of devices or units can be in electrical, mechanical, or other forms.

[0172] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0173] In addition, the functional units in each embodiment of this application can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0174] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium includes: various media that can store programs, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs.

[0175] The preferred embodiments of the embodiments of this application have been described above with reference to the accompanying drawings, and thus do not limit the scope of the rights of the embodiments of this application. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of this application shall be within the scope of the rights of the embodiments of this application.

Claims

1. A method for controlling the pump pressure downhole during drilling, characterized in that, Applied to a pump pressure control system, the pump pressure control system includes a pressure relief device for reducing the pump pressure in the well during drilling. The method includes: Obtaining target downhole mechanical parameters corresponding to the current acquisition moment of the well drilling, where the target downhole mechanical parameters corresponding to the current acquisition moment include the actual pump pressure of the well drilling at the current acquisition moment; If the actual pump pressure at the current acquisition moment is less than or equal to a preset pump pressure, then based on the target downhole mechanical parameters corresponding to the current acquisition moment, make a prediction to obtain the pump pressure of the well drilling at a preset moment. And if the pump pressure at the preset moment is greater than the preset pump pressure, output a warning message. The current acquisition moment is earlier than the preset moment, and the warning message includes the target downhole mechanical parameters corresponding to the current acquisition moment and the pump pressure at the preset moment; If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, then control the pressure relief device to start, and jump to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the well drilling to execute until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then control the pressure relief device to close.

2. The method according to claim 1, characterized in that, The pump pressure control system further includes a measurement-while-drilling device, which is arranged on the drill bit for operating in the well drilling; Obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the well drilling includes: Collecting the initial downhole mechanical parameters corresponding to the current acquisition moment of the well drilling through the measurement-while-drilling device; Performing a preset process on the initial downhole mechanical parameters to obtain the target downhole mechanical parameters corresponding to the current acquisition moment of the well drilling, and the preset process includes interpolation processing and cleaning processing.

3. The method according to claim 1, wherein If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, then making a prediction to obtain the pump pressure of the well drilling at the preset moment based on the target downhole mechanical parameters corresponding to the current acquisition moment includes: If the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, then make a prediction based on the target downhole mechanical parameters corresponding to the current acquisition moment through a target pump pressure prediction model to obtain the pump pressure of the well drilling at the preset moment, where the target pump pressure prediction model is obtained according to the following process: Obtaining a plurality of training samples, each of which includes the first downhole mechanical parameters corresponding to the first historical moment of the well drilling and the pump pressure at the second historical moment of the well drilling. The first historical moment is earlier than the second historical moment, and the first historical moments of each training sample are different; Training an initial pump pressure prediction model according to the plurality of training samples to obtain the target pump pressure prediction model, and the initial pump pressure prediction model is constructed according to the mechanism model and the lead prediction algorithm of the well drilling.

4. The method according to claim 1, wherein The pump pressure control system further includes a controller and a remote control device. The controller is communicatively connected to the remote control device. The pressure relief device includes a servo motor and a pressure relief valve, and the remote control device is electrically connected to the servo motor; If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, then controlling the pressure relief device to start includes: If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the controller sends a first pressure relief instruction to the remote control device, and the remote control device is used to control the servo motor to start, and drive the pressure relief valve to open through the servo motor.

5. The method according to claim 4, wherein The remote control device includes a servo and a programmable logic controller. The servo is communicatively connected to the programmable logic controller, and the servo is electrically connected to the servo motor. If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, sending a first pressure relief instruction to the remote control device through the controller includes: If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, the controller sends a first pressure relief instruction to the programmable logic controller, and the programmable logic controller is used to forward the first pressure relief instruction to the servo.

6. The method according to claim 1, wherein The method further includes: Receiving a second pressure relief instruction, where the second pressure relief instruction includes a target pump pressure. In response to the second pressure relief instruction, controlling the pressure relief device to start, and jumping to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling until the actual pump pressure at the current acquisition moment is equal to the target pump pressure. Controlling the pressure relief device to close.

7. The method according to claim 1, wherein After obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling, the method further includes: If the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, outputting an alarm message, where the alarm message includes a first-level alarm message, a second-level alarm message, and a third-level alarm message. The step of if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, outputting an alarm message includes: Subtracting the preset pump pressure from the actual pump pressure at the current acquisition moment to obtain a pump pressure difference. If the pump pressure difference is greater than a first preset value, outputting a first-level alarm message. If the pump pressure difference is greater than a second preset value and the pump pressure difference is less than or equal to the first preset value, outputting a second-level alarm message. If the pump pressure difference is greater than a third preset value and the pump pressure difference is less than or equal to the second preset value, outputting a third-level alarm message. Wherein, the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value.

8. A downhole pump pressure control device for drilling, characterized in that, Applied to a pump pressure control system, the pump pressure control system includes a pressure relief device for reducing the pump pressure in the wellbore of the drilling. The device includes: An acquisition module for acquiring the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling, and the target downhole mechanical parameters corresponding to the current acquisition moment include the actual pump pressure at the current acquisition moment of the drilling. An early warning module, configured to, if the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, perform a prediction based on the target downhole mechanical parameters corresponding to the current acquisition moment to obtain the pump pressure of the drilling at a preset moment, and output an early warning message when the pump pressure at the preset moment is greater than the preset pump pressure, where the current acquisition moment is earlier than the preset moment, and the early warning message includes the target downhole mechanical parameters corresponding to the current acquisition moment and the pump pressure at the preset moment; A control module, configured to, if the actual pump pressure at the current acquisition moment is greater than the preset pump pressure, control the pressure relief device to start, and jump to the step of obtaining the target downhole mechanical parameters corresponding to the current acquisition moment of the drilling for execution, until the actual pump pressure at the current acquisition moment is less than or equal to the preset pump pressure, and then control the pressure relief device to close.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the method for controlling the downhole pump pressure of the drilling according to any one of claims 1 to 7 is implemented.

10. A pump pressure control system, characterized in that, Comprising: A pressure relief device, which is used to reduce the pump pressure in the downhole of the drilling; The electronic device according to claim 9.

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