Dynamic well track control method and device

Abstract

The invention provides a dynamic well track control method and device.The method comprises the steps that a drilling operation instruction is sent to a drilling machine so as to start the drilling machine to work according to a composite drilling mode, and in the drilling process, current well deviation data measured by an MWD tool are received through the mud pulse telemetry technology; detecting whether the current well deviation data meets a preset well deviation design requirement or not; if yes, a well drilling deviation correcting instruction is sent to the drilling machine so as to control a drill column of the drilling machine to stop, the composite drilling mode is converted into a sliding drilling mode, and new current well deviation data measured by the MWD tool are received; and based on the received new current well deviation data, returning to execute: detecting whether the current well deviation data meets the preset well deviation design requirement, and when the preset well deviation design requirement is met, converting the sliding drilling mode into the composite drilling mode to obtain a well track meeting the service requirement. The method ensures that the well track is always smooth and is close to the designed track, and the drilling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling engineering, in particular to a dynamic wellbore trajectory control method and device. BACKGROUND

[0002] In drilling operations, accurate control of wellbore trajectory is crucial, which is directly related to whether the target oil and gas reservoir can be accurately drilled, whether collision with adjacent wells can be avoided, whether drilling friction and torque can be reduced, whether downhole safety can be ensured, and whether drilling efficiency can be improved. Especially in complex geological structure areas, such as the transition zone of different structural units (such as the transition zone of Weibei uplift, Yishan slope and Tianhuan depression), due to large stratigraphic dip angle, strong anisotropy and alternating hard and soft rocks, there are significant natural build-up or drop rules in the drilling process, which makes the wellbore trajectory deviate from the preset trajectory.

[0003] At present, the conventional wellbore trajectory control technology usually adopts an intermittent single-point surveying method, that is, after drilling a certain footage, the drilling is stopped and the surveying instrument is lowered to measure. This method has serious lag and cannot reflect the changes of well inclination and azimuth in the drilling process in real time. When it is found that the well inclination exceeds the standard, the design trajectory has been deviated far away, and complex and time-consuming correction operations are needed, which may even lead to wellbore abandonment, greatly increasing the drilling cost and time cost, resulting in poor trajectory control accuracy, low correction operation efficiency, high drilling risk and cost increase. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a dynamic wellbore trajectory control method and device, which can ensure that the wellbore trajectory is always smooth and close to the design trajectory by establishing a decision and execution mechanism based on real-time data, thereby improving the drilling efficiency.

[0005] In a first aspect, a dynamic wellbore trajectory control method is provided, which can include: sending a drilling operation instruction to a drilling rig to start the drilling rig to work in a composite drilling mode, a PDC drill bit of the drilling rig being connected with a configured steering assembly, the steering assembly including a single-bend screw motor and a measurement-while-drilling (MWD) tool; receiving, through mud pulse telemetry, current well inclination data measured by the MWD tool during drilling; detecting whether the current well inclination data meets a preset well inclination design requirement; if yes, sending a well inclination correction instruction to the drilling rig to control the drill string of the drilling rig to stop, convert the composite drilling mode to a sliding drilling mode, and receiving, through mud pulse telemetry, well inclination data measured by the MWD tool; the sliding drilling mode is configured as a mode in which the drill bit cuts in a direction in which the well inclination decreases under the guidance of the single-bend structure; Based on the received new current inclination data, return to perform the step of detecting whether the current inclination data meets the preset inclination design requirement, until the preset inclination design requirement is met, the sliding drilling mode is converted into the composite drilling mode, and the well trajectory meeting the business requirement is obtained.

[0006] In one possible implementation, the detection of whether the current inclination data meets the preset inclination design requirement comprises: detecting whether the current inclination data is within the designed well trajectory allowed inclination threshold range, and / or whether the change rate of the current inclination data in a preset time period is greater than a preset allowed build-up tendency.

[0007] In one possible implementation, the current inclination data comprises a well inclination angle parameter.

[0008] In one possible implementation, the method further comprises: if the change rate of the current inclination data is greater than the preset allowed build-up tendency, reducing the upper threshold of the inclination threshold range by a first preset step size; if the change rate of the current inclination data in a continuous preset time period is not greater than the preset allowed build-up tendency, increasing the upper threshold of the inclination threshold range by a second preset step size.

[0009] In one possible implementation, the current inclination data further comprises a geological parameter and a drilling engineering parameter.

[0010] The detection of whether the current inclination data meets the preset inclination design requirement further comprises: obtaining a feature vector of the current inclination data in a preset time period, the feature vector representing the change rate, fluctuation amplitude and mutual deviation degree of the corresponding parameters; inputting the extracted feature vector into a previously established geological steering entropy GSE calculation model to obtain a current GSE value output by the model in real time; the GSE calculation model is trained based on historical inclination data in the current drilling operation; detecting whether the current GSE value is lower than a preset GSE threshold when the well inclination angle parameter is within the inclination threshold range and the change rate of the current inclination data in a preset time period is not greater than the preset allowed build-up tendency.

[0011] In one possible implementation, the geological parameter comprises a gamma parameter and a resistivity; and the drilling engineering parameter comprises a torque, a drilling pressure and a standpipe pressure.

[0012] In one possible implementation, the method further comprises: if the current inclination data still does not meet the preset inclination design requirement after a preset number of iterations, generating an alarm signal.

[0013] In a second aspect, a dynamic well trajectory control device is provided, which can include: a sending unit configured to send a drilling operation instruction to a drilling rig to start the drilling rig to work in a composite drilling mode, the drilling rig being connected with a configured steering assembly, the steering assembly including a single bend spiral motor and a measurement while drilling (MWD) tool; a receiving unit configured to receive current inclination data measured by the MWD tool through mud pulse telemetry during drilling; a detecting unit configured to detect whether the current inclination data meets a preset inclination design requirement; the sending unit is further configured to send a drilling inclination correction instruction to the drilling rig to control the drill string of the drilling rig to stop and convert the composite drilling mode to a sliding drilling mode if the current inclination data meets the preset inclination design requirement, and receive inclination data measured by the MWD tool through mud pulse telemetry; the sliding drilling mode is configured to be a mode in which the drill bit cuts in a direction in which the inclination decreases under the guidance of the single bend structure. a triggering unit configured to trigger the detecting unit to perform the step of detecting whether the current inclination data meets the preset inclination design requirement based on the received new current inclination data, and convert the sliding drilling mode to the composite drilling mode until the preset inclination design requirement is met, to obtain a well trajectory that meets the business requirement.

[0014] In a third aspect, an electronic device is provided, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete communication with each other through the communication bus. The memory is configured to store a computer program. The processor is configured to execute the program stored on the memory to implement the method steps of any one of the first aspect.

[0015] In a fourth aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to implement the method steps of any one of the first aspect.

[0016] The method provided by the embodiment of the application sends a drilling operation instruction to a drilling rig to start the drilling rig to work in a composite drilling mode, a PDC drill bit of the drilling rig is connected with a configured steering assembly, the steering assembly includes a single-bend screw motor and a measurement-while-drilling (MWD) tool; in the drilling process, current inclination data measured by the MWD tool is received through mud pulse telemetry technology; it is detected whether the current inclination data meets a preset inclination design requirement; if yes, a drilling inclination correction instruction is sent to the drilling rig to control the drilling string of the drilling rig to stop, the composite drilling mode is converted into a sliding drilling mode, and new current inclination data measured by the MWD tool is received through mud pulse telemetry technology; the sliding drilling mode is configured as a mode in which the drill bit cuts in a direction in which the inclination decreases under the guidance of the single-bend structure; based on the received new current inclination data, the step of detecting whether the current inclination data meets the preset inclination design requirement is returned to be executed until the sliding drilling mode is converted into the composite drilling mode when the preset inclination design requirement is met, and a wellbore trajectory meeting a business requirement is obtained. The method establishes a decision and execution mechanism based on real-time data, ensures that the wellbore trajectory is always smooth and close to the designed track, and improves the drilling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 A flowchart of a dynamic wellbore trajectory control method provided by the embodiment of the application is shown in the figure. Figure 2 A structural diagram of a dynamic wellbore trajectory control device provided by the embodiment of the application is shown in the figure. Figure 3 A structural diagram of an electronic device provided by the embodiment of the application is shown in the figure. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, and not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the general meaning understood by a person of ordinary skill in the art to which the present application belongs. The terms "first", "second", and similar terms used in the present application do not represent any order, number, or importance, but are only used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect", "couple", or "connect" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0020] The main technical problem solved by the dynamic well trajectory control method provided in the embodiments of the present application is that the existing well trajectory control method cannot effectively respond to rapid well deviation changes caused by complex geological structures due to measurement lag and untimely correction, resulting in poor trajectory control accuracy, low correction operation efficiency, high drilling risk, and increased cost. The method realizes closed-loop control of "prevention-monitoring-immediate correction" of well deviation by integrating specific tools and original operation logic. Specifically, the full-hole directional drilling assembly is combined with real-time monitoring while drilling, and the traditional post-correction is changed to preventive fine-tuning during the operation. By establishing a decision and execution mechanism based on real-time data, once an abnormal trend of well deviation is monitored (not seriously exceeded), a sliding correction operation is triggered, so that the trajectory deviation is controlled in the embryonic state, and the well trajectory is always smooth and close to the designed trajectory.

[0021] The preferred embodiments of the present application are described below in conjunction with the drawings of the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application, and the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] Figure 1 A flowchart of a dynamic well trajectory control method provided by the embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the method is applied to a ground control system, and the method can include the following steps. Figure 1 ​Step S110, send drilling operation instruction to the drilling rig to start the drilling rig to work in the composite drilling mode.

[0023] The PDC drill bit of the drilling is connected with a configured steering assembly, which can include a single bend screw motor and a measurement while drilling (MWD) tool. The assembly includes, from top to bottom, a PDC drill bit, a single bend screw motor, and a measurement while drilling (MWD) tool. This assembly is not only used in the well section that needs to be deviated, but also used as a standard configuration for the whole well section. This provides a physical basis for measurement and deviation correction at any time and anywhere during the whole drilling process, and is a hardware prerequisite for dynamic control.

[0024] Step S120, during the drilling process, receiving the current inclination data measured by the MWD tool through mud pulse telemetry technology.

[0025] The drilling rig is started for normal drilling operation. During the drilling process, the sensors (such as accelerometers and magnetometers) in the MWD tool continuously measure the inclination angle and azimuth angle parameters of the bottom hole at a high frequency (for example, once every 10-30 seconds). The measured data is encoded and transmitted to the ground control system in real time through mud pulse telemetry technology (or electromagnetic waves, acoustic waves, etc.).

[0026] Step S130, detecting whether the current inclination data meets the preset inclination design requirement to obtain a detection result.

[0027] The ground control system receives and processes the real-time transmitted inclination data. The system compares the current inclination value with the threshold range allowed by the design track, and pays special attention to the change rate of the inclination value (i.e. the inclination increasing trend). The judgment logic is: as long as the inclination measurement value exceeds the preset threshold, or although it does not exceed the threshold but shows a continuous and rapid inclination increasing trend, it is immediately determined that the inclination is abnormal or has an increasing trend, triggering the deviation correction instruction.

[0028] Specifically, detecting whether the current inclination data is within the inclination threshold range allowed by the design well trajectory, and / or whether the change rate of the current inclination data in a preset time period is greater than a preset allowed inclination increasing trend.

[0029] In some embodiments, if the change rate of the current inclination data is greater than the preset allowed inclination increasing trend, the upper threshold of the inclination threshold range is reduced by a first preset step; if the change rate of the current inclination data in a continuous preset time period is not greater than the preset allowed inclination increasing trend, the upper threshold of the inclination threshold range is increased by a second preset step.

[0030] That is, if the drilled wellbore shows a strong, consistent natural build-up trend, the system automatically tightens the upper threshold of the well deviation slightly. This is because a strong build-up trend means that the subsequent well section is more likely to exceed the standard, and needs more stringent control. Conversely, if the drilled wellbore trajectory is very stable, the threshold can be appropriately relaxed to improve drilling efficiency.

[0031] Further, the selection of the step size is not only based on the well deviation rate of change, but also based on real-time evaluation of the comprehensive drilling efficiency under different thresholds, with the goal of finding the optimal threshold that can guarantee both trajectory safety and drilling efficiency.

[0032] The comprehensive efficiency index (P) is defined as P = drilling speed x weight W1 - sliding correction frequency x weight W2 - well deviation risk coefficient x weight W3. The higher the value of the index P, the better the comprehensive efficiency.

[0033] First step size acquisition: When the threshold needs to be tightened, the system will refer to the recent historical data. For example, in the past similar situations, a larger first step size (fast tightening) although temporarily leads to a decrease in efficiency, avoids more time-consuming correction in the future, and ultimately has a higher P value. Therefore, the system will select that historical value that can bring a higher P value as the first step size.

[0034] Second step size acquisition: When the threshold needs to be relaxed, the system will first use a very small preset second step size to relax the threshold, and then observe the P value change of the next section of well depth. If the P value rises (indicating an increase in efficiency and trajectory safety), the small step size is continued to be used to relax in the next cycle. If the P value decreases (such as frequent small correction), the relaxation is stopped or even slightly tightened.

[0035] Step S140, when the detection result is well deviation anomaly or increasing trend, a well deviation correction instruction is sent to the drilling rig to control the drilling string to stop, convert the composite drilling mode to the sliding drilling mode, and receive the new current well deviation data measured by the MWD tool through the mud pulse telemetry technology.

[0036] Among them, the sliding drilling mode is configured as a mode in which the drill bit cuts in the direction of reducing the well deviation under the guidance of the single bend structure. That is, the entire drilling string is pushed downward by the drawworks of the drilling rig. Due to the single bend screw at the bottom, the drill bit will naturally cut in the direction in which the well deviation needs to be reduced during sliding, thereby effectively reducing the well deviation.

[0037] Once the well deviation correction instruction is triggered, the following operations are performed immediately: Stop composite drilling: Stop the rotation of the drilling string and convert to the sliding drilling mode.

[0038] Implementing sliding straightening: using ground equipment to push the drill string to slide down, at this time, due to the motor structure of the single bend screw rod, the drill bit cuts in the direction of reducing the inclination under the guidance of the single bend structure. During this process, the MWD tool continuously monitors the inclination change.

[0039] Step S150, based on the received new current inclination data, it is determined that the well trajectory that meets the business requirements is obtained.

[0040] Based on the received new current inclination data, return to execute the step of detecting whether the current inclination data meets the preset inclination design requirement, until the preset inclination design requirement is met, the sliding drilling mode is converted into the composite drilling mode, and the well trajectory that meets the business requirements is obtained. That is, when the real-time monitored inclination value falls within the safety threshold, and the build-up trend is effectively curbed, the sliding straightening operation is stopped, so as to obtain the well trajectory that meets the business requirements.

[0041] In some embodiments, the current inclination data can also include geological parameters and drilling engineering parameters. Among them, the geological parameters can include gamma parameters and resistivity; the drilling engineering parameters can include torque, drilling pressure and standpipe pressure.

[0042] Detecting whether the current inclination data meets the preset inclination design requirement can also include: Obtaining a feature vector of the current inclination data in a preset time period, the feature vector being used to represent the change rate, fluctuation amplitude and mutual deviation degree of the corresponding parameters; Inputting the extracted feature vector into a previously established geological steering entropy GSE calculation model to obtain a current GSE value output by the model in real time; the GSE calculation model is trained based on historical inclination data in the current drilling operation; Detecting whether the current GSE value is lower than a preset GSE threshold when the inclination angle parameter is within the inclination threshold range and the change rate of the current inclination data in the preset time period is not greater than a preset allowable build-up trend.

[0043] Specifically, when the inclination increases slightly, if it is accompanied by sharp fluctuations in gamma value and resistivity and abnormal torque, the GSE value will rise sharply. The system sets a GSE threshold, when the GSE value exceeds the threshold, even if the inclination itself has not exceeded the threshold, it is determined as a high-risk abnormality, and the straightening is triggered immediately. This way gets rid of the single dependence on inclination angle, and comprehensively utilizes geological and engineering information for comprehensive judgment, which greatly improves the reliability.

[0044] In some embodiments, if the current inclination data still does not meet the preset inclination design requirement after a preset number of iterations, an alarm signal is generated.

[0045] The present application has the following advantages: High-precision trajectory control: Real-time, dynamic, and accurate control of wellbore trajectory is achieved, effectively overcoming the natural build-up effect caused by complex geological conditions, and ensuring that the actual drilling trajectory is highly consistent with the designed trajectory.

[0046] Improved drilling efficiency: Incorporating the deviation correction operation into the normal drilling process avoids the large-scale, time-consuming, and labor-intensive tripping operations caused by severe deviation in traditional methods, significantly shortening the drilling cycle.

[0047] Reduced drilling risk and cost: Smooth wellbore trajectory reduces the probability of downhole complications (such as sticking, excessive friction and torque), improving operational safety. At the same time, by improving efficiency and reducing non-production time, the overall drilling cost is significantly reduced.

[0048] Proactive deviation prevention: The deviation correction mechanism based on trend judgment can intervene when the inclination deviates slightly, preventing deviation accumulation and achieving a fundamental change from passive correction to active prevention, improving the intelligent level of the drilling process.

[0049] Corresponding to the above method, the embodiments of the present application also provide a dynamic wellbore trajectory control device, as shown in Figure 2 The device comprises: A sending unit 210 is configured to send a drilling operation instruction to a drilling rig to start the drilling rig to work in a composite drilling mode, wherein a PDC drill bit of the drilling rig is connected with a configured steering assembly, and the steering assembly comprises a single-bend screw motor and a measurement-while-drilling (MWD) tool. A receiving unit 220 is configured to receive current inclination data measured by the MWD tool through mud pulse telemetry technology during drilling. A detection unit 230 is configured to detect whether the current inclination data meets a preset inclination design requirement. The sending unit 210 is further configured to send a drilling deviation correction instruction to the drilling rig to control the drill string of the drilling rig to stop and convert the composite drilling mode to a sliding drilling mode if the preset inclination design requirement is met, and receive inclination data measured by the MWD tool through mud pulse telemetry technology; the sliding drilling mode is configured as a mode in which the drill bit cuts in a direction in which the inclination decreases under the guidance of the single-bend structure. A triggering unit 240 is configured to trigger the detection unit to perform the step of detecting whether the current inclination data meets the preset inclination design requirement based on the received new current inclination data, and convert the sliding drilling mode to the composite drilling mode until the preset inclination design requirement is met, to obtain a wellbore trajectory that meets the business requirements.

[0050] The functions of each functional unit of the dynamic wellbore trajectory control device provided in the above embodiments of this application can be implemented through the above methods and steps. Therefore, the specific working process and beneficial effects of each unit in the dynamic wellbore trajectory control device provided in the embodiments of this application will not be repeated here.

[0051] This application also provides an electronic device, such as... Figure 3 As shown, it includes a processor 310, a communication interface 320, a memory 330, and a communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 communicate with each other through the communication bus 340.

[0052] Memory 330 is used to store computer programs; When the processor 310 executes the program stored in the memory 330, it performs the following steps: Send a drilling operation command to the drilling rig to start the drilling rig to work in a composite drilling mode. The drilling PDC bit is connected to a configured directional drilling tool assembly, which includes a single-bend screw motor and a measurement-while-drilling (MWD) tool. During the drilling process, the current well deviation data measured by the MWD tool is received through mud pulse telemetry technology; Check whether the current well inclination data meets the preset well inclination design requirements; If the conditions are met, a drilling deviation correction command is sent to the drilling rig to control the drill string of the drilling rig to stop, convert the composite drilling mode to the sliding drilling mode, and receive the well deviation data measured by the MWD tool through mud pulse telemetry technology; the sliding drilling mode is configured so that the drill bit cuts in the direction of decreasing well deviation under the guidance of the single-bend structure. Based on the received new current well inclination data, return to the execution steps: detect whether the current well inclination data meets the preset well inclination design requirements, and when the preset well inclination design requirements are met, convert the sliding drilling mode to the composite drilling mode to obtain a wellbore trajectory that meets business requirements.

[0053] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0054] The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0055] The memory can include a Random Access Memory (RAM) and can also include a Non-Volatile Memory (NVM), such as at least one disk memory. Optionally, the memory can also be at least one storage device located remotely from the aforementioned processor.

[0056] The processor described above can be a general processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc. It can also be a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component.

[0057] The implementation manners and beneficial effects of the electronic device in the above-mentioned embodiments can be achieved by referring to the steps in the above-mentioned embodiments. Figure 1 The specific working process and beneficial effects of the electronic device provided by the embodiments of the present application are not repeated here.

[0058] In another embodiment provided by the present application, a computer readable storage medium is provided, which stores instructions, and when the instructions run on a computer, the computer executes the dynamic well trajectory control method in any of the above-mentioned embodiments.

[0059] In another embodiment provided by the present application, a computer program product containing instructions is provided, and when the instructions run on a computer, the computer executes the dynamic well trajectory control method in any of the above-mentioned embodiments.

[0060] Those skilled in the art should understand that the embodiments in the embodiments of the present application can be provided as a method, a system or a computer program product. Therefore, the embodiments in the embodiments of the present application can be in the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the embodiments in the embodiments of the present application can be in the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

[0061] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0062] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0063] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0064] While preferred embodiments of the application have been described, modifications and variations can be apparent to those skilled in the art once aware of the general underlying concepts. Therefore, it is intended that the scope of the appended claims should include all such modifications and variations.

[0065] It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover the modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A dynamic wellbore trajectory control method, characterized in that, The method includes: Send a drilling operation command to the drilling rig to start the drilling rig to work in a composite drilling mode. The drilling PDC bit is connected to a configured directional drilling tool assembly, which includes a single-bend screw motor and a measurement-while-drilling (MWD) tool. During the drilling process, the current well deviation data measured by the MWD tool is received through mud pulse telemetry technology; Check whether the current well inclination data meets the preset well inclination design requirements; If the conditions are met, a drilling deviation correction command is sent to the drilling rig to control the drill string to stop, convert the composite drilling mode to the sliding drilling mode, and receive the new current well deviation data measured by the MWD tool through mud pulse telemetry technology; the sliding drilling mode is configured so that the drill bit cuts in the direction of decreasing well deviation under the guidance of the single-bend screw motor. Based on the received new current well inclination data, return to the execution steps: detect whether the current well inclination data meets the preset well inclination design requirements, and when the preset well inclination design requirements are met, convert the sliding drilling mode to the composite drilling mode to obtain a wellbore trajectory that meets business requirements.

2. The method as described in claim 1, characterized in that, Detecting whether the current well inclination data meets the preset well inclination design requirements includes: The system detects whether the current well inclination data is within the well inclination threshold range allowed by the designed well trajectory, and / or whether the rate of change of the current well inclination data within a preset time period is greater than the preset allowed inclination trend.

3. The method as described in claim 2, characterized in that, The current well inclination data includes well inclination angle parameters.

4. The method as described in claim 2, characterized in that, The method further includes: If the rate of change of the current well inclination data is greater than the preset allowable inclination trend, then the upper limit of the well inclination threshold range is reduced by the first preset step size. If the rate of change of the current well inclination data within a consecutive preset time period is not greater than the preset allowable inclination trend, then the upper limit of the well inclination threshold range is increased by the second preset step size.

5. The method as described in claim 3, characterized in that, The current well deviation data also includes geological parameters and drilling engineering parameters; Detecting whether the current well inclination data meets the preset well inclination design requirements also includes: Obtain the feature vector of the current well inclination data within a preset time period. The feature vector represents the rate of change, fluctuation amplitude, and mutual deviation of the corresponding parameters. The extracted feature vector is input into a pre-established geological steering entropy (GSE) calculation model, and the model outputs a current GSE value in real time. The GSE calculation model is trained based on historical well deviation data in the current drilling operation. The detection function checks whether the current GSE value is lower than the preset GSE threshold when the well inclination angle parameter is within the well inclination threshold range and the rate of change of the current well inclination data within a preset time period is not greater than the preset allowable inclination trend.

6. The method as described in claim 5, characterized in that, The geological parameters include gamma parameters and resistivity; the drilling engineering parameters include torque, drilling pressure, and riser pressure.

7. The method as described in claim 1, characterized in that, The method further includes: If, after a preset number of iterations, the current well inclination data still does not meet the preset well inclination design requirements, an alarm signal is generated.

8. A dynamic wellbore trajectory control device, characterized in that, The device includes: The sending unit is used to send drilling operation instructions to the drilling rig to start the drilling rig to work in a composite drilling mode. The PDC drill bit of the drilling rig is connected to a directional drilling tool assembly, which includes a single-bend screw motor and a measurement-while-drilling (MWD) tool. The receiving unit is used to receive the current wellbore deviation data measured by the MWD tool during the drilling process using mud pulse telemetry technology; The detection unit is used to detect whether the current well inclination data meets the preset well inclination design requirements; The sending unit is also used to send a drilling deviation correction command to the drilling rig if the conditions are met, so as to control the drill string of the drilling rig to stop, convert the composite drilling mode to the sliding drilling mode, and receive the well deviation data measured by the MWD tool through mud pulse telemetry technology; the sliding drilling mode is configured to be a mode in which the drill bit cuts in the direction of decreasing well deviation under the guidance of the single-bend screw motor. The triggering unit is used to trigger the detection unit to perform the following steps based on the received new current well inclination data: detect whether the current well inclination data meets the preset well inclination design requirements, and when the preset well inclination design requirements are met, convert the sliding drilling mode to the composite drilling mode to obtain a wellbore trajectory that meets the business requirements.

9. An electronic device, characterized in that, The electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the method of any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method described in any one of claims 1-7.

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