Drilling tool jamming risk real-time evaluation system for large-displacement drilling

Abstract

The invention belongs to the technical field of drilling supervision, and particularly relates to a drilling tool jamming risk real-time evaluation system for large-displacement drilling, which comprises a drilling preparation hidden danger analysis module, a drilling real-time monitoring module, a drilling tool jamming risk real-time evaluation module, a drilling tool jamming early warning output module and a drilling construction supervision end, the drilling preparation hidden danger analysis module is used for comprehensively analyzing geological factors, physical and chemical factors and engineering factors before drilling so as to identify potential risks, and drilling operation of large-displacement drilling is carried out after the influence of environmental factors on drilling jamming is eliminated; the drilling tool jamming risk real-time evaluation module evaluates the drilling tool jamming real-time risk of large-displacement drilling operation based on the drilling parameter data, enables the drilling construction supervision terminal to give out early warning when it is judged that the drilling tool jamming risk exists, can accurately judge the drilling tool jamming risk in real time and output early warning in time, is beneficial to rapidly take reasonable emergency treatment measures to achieve jamming release, and improves the drilling efficiency. The safety and the efficiency of large-displacement drilling operation are obviously improved; and the management difficulty of the drilling operation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of drilling supervision, and in particular to a real-time assessment system for the risk of a stuck drill in large-displacement drilling. Background Art

[0002] As one of the key technologies in oil and gas exploration and development, extended reach drilling has broad application prospects under complex geological conditions. However, drill bit sticking occurs frequently during drilling, which not only interrupts drilling operations and increases costs, but also easily leads to serious safety accidents. Traditional stuck pipe risk assessment mostly relies on experience judgment and post-analysis. It is difficult to identify potential risks before drilling operations to eliminate environmental impacts and achieve real-time monitoring and early warning of stuck pipe during drilling operations. It is also impossible to accurately judge the difficulty of drilling operation management and the risk of operation duty. It is difficult to effectively prevent and control the occurrence of stuck pipe events, which is not conducive to ensuring the safety and efficiency of drilling operations for extended reach wells. In view of the above technical defects, a solution is now proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a real-time assessment system for the risk of drill sticking in large-displacement drilling, which solves the problem that the prior art is difficult to identify potential risks before drilling operations to eliminate environmental impacts and realize drill sticking monitoring and early warning for drilling operations, and is unable to accurately judge the difficulty of drilling operation management and the risk of operation duty, making it difficult to effectively prevent and control the occurrence of drill sticking events, which is not conducive to ensuring the safety and efficiency of drilling operations.

[0004] To achieve the above object, the present invention provides the following technical solutions: A real-time assessment system for the risk of a stuck drill in large-reach drilling, comprising a drilling preparation hidden danger analysis module, a drilling real-time monitoring module, a real-time assessment module for the risk of a stuck drill, a stuck drill warning output module and a drilling construction supervision terminal; The drilling preparation hidden danger analysis module conducts a comprehensive analysis of geological factors, physical and chemical factors, and engineering factors before drilling, identifies potential risks and sends them to the drilling construction supervision end. Based on the identified potential risks, corresponding improvement measures are taken to eliminate the impact of environmental factors on drill sticking; After eliminating the influence of environmental factors on the stuck drill, the drilling operation of the extended reach drilling is carried out. The real-time monitoring module of the drilling monitors the real-time data of key parameters in the drilling process in real time, and sends the collected drilling parameter data to the real-time assessment module of the stuck drill risk; The real-time drill stuck risk assessment module assesses the real-time risk of drill stuck in large-displacement drilling operations based on the received drilling parameter data, and sends the real-time assessment results to the drill stuck warning output module; when it is determined that there is a drill stuck risk, the drill stuck warning output module generates a drill stuck alarm signal and sends it to the drilling construction supervision end, which issues a warning when receiving the drill stuck alarm signal.

[0005] Furthermore, for geological factor analysis, before drilling, geological exploration data and geological models are used to conduct detailed analysis of key geological features on the drilling path, including fault planes and structural fold belts, to evaluate their impact on the risk of stuck pipe during drilling, and based on the evaluation results, adjust the drilling direction or strengthen the supporting role of the drilling fluid during drilling, and select appropriate drill bits and drilling parameters; For the analysis of physical and chemical factors, the physical and chemical indicators of hydration and expansion of shale in the drilling fluid are monitored, and their impact on wellbore stability is analyzed in combination with laboratory research results and historical data, providing a basis for the selection of drilling fluid and performance adjustment; for the analysis of engineering factors, a comprehensive analysis of engineering factors including drilling fluid density and performance is conducted, and their impact on the risk of stuck pipe is evaluated in combination with drilling technology and operating conditions, providing guidance for the optimization of drilling design and operating strategies.

[0006] Furthermore, the specific analysis process of the real-time assessment module for the risk of stuck drill is as follows: the real-time rotation torque borne by the drill bit in the extended reach well drilling operation is obtained; if the rotation torque is currently increasing, the difference between two sets of real-time rotation torques at adjacent moments is calculated to obtain the torque instantaneous increase value; and the real-time drilling speed in the extended reach well drilling operation is obtained; if the drilling speed is currently decreasing, the difference between two sets of real-time drilling speeds at adjacent moments is calculated to obtain the drilling speed instantaneous decrease value; The instantaneous increase value of the torque and the instantaneous decrease value of the drilling speed are numerically compared with the preset instantaneous increase threshold of the torque and the preset instantaneous decrease threshold of the drilling speed. If the instantaneous increase value of the torque or the instantaneous decrease value of the drilling speed exceeds the corresponding preset threshold, it is judged that there is a risk of stuck drill.

[0007] Furthermore, if the instantaneous torque increase value and the instantaneous drilling speed decrease value do not exceed the corresponding preset threshold values, the current real-time rotational torque and real-time drilling speed are marked as the torque analysis value and the drilling speed analysis value respectively; and the real-time pump pressure data of the extended reach well drilling operation is collected, and the difference between the real-time pump pressure data and the median of the preset pump pressure data range is calculated and the absolute value is taken to obtain the pump pressure analysis value; The stuck drill risk coefficient is obtained by numerically calculating the torque analysis value, the drilling speed analysis value and the pump pressure analysis value. The stuck drill risk coefficient is numerically compared with a preset stuck drill risk coefficient threshold. If the stuck drill risk coefficient exceeds the preset stuck drill risk coefficient threshold, it is judged that there is a stuck drill risk.

[0008] Furthermore, the drill stuck warning output module is communicatively connected to the drilling management decision module, and the drill stuck warning output module sends the drill stuck alarm signal to the drilling management decision module. The drilling management decision module sets a detection period, and analyzes the drilling management difficulty of the large displacement well drilling operation within the detection period, and determines whether to generate a drilling management high difficulty signal based on this, and sends the drilling management high difficulty signal to the drilling construction supervision end. When the drilling construction supervision end receives the drilling management high difficulty signal, it issues a corresponding warning.

[0009] Furthermore, the specific analysis process of the drilling management decision module is as follows: the number of times the stuck drill alarm signal is generated within the detection period is collected and marked as a stuck drill alarm value, the stuck drill alarm value is numerically compared with a preset stuck drill alarm threshold, and if the stuck drill alarm value exceeds the preset stuck drill alarm threshold, a high-difficulty drilling management signal for the extended reach well drilling operation is generated; If the stuck drill alarm value does not exceed the preset stuck drill alarm threshold, the emergency stuck drill evaluation analysis is performed to obtain the emergency stuck drill hidden danger coefficient, and the emergency stuck drill hidden danger coefficient is numerically compared with the preset emergency stuck drill hidden danger coefficient threshold. If the emergency stuck drill hidden danger coefficient exceeds the preset emergency stuck drill hidden danger coefficient threshold, a high difficulty signal for drilling management of the extended reach well drilling operation is generated.

[0010] Furthermore, the specific analysis process of the emergency jamming assessment analysis is as follows: the generation time of the corresponding drill jam alarm signal is collected and marked as the drill jam time, and the time of stopping drilling is collected and marked as the drill stop time, the interval between the drill stop time and the drill jam time is marked as the drill stop reaction value, and all the drill stop reaction values ​​in the detection period are averaged to obtain the drill stop characteristic value; The moment when the corresponding stuck drill alarm signal is released after emergency processing is collected and marked as the jam-releasing moment, the interval between the jam-releasing moment and the corresponding drilling stop moment is marked as the jam-releasing efficiency value, and the mean of all jam-releasing efficiency values ​​in the detection period is calculated to obtain the jam-releasing characteristic value; the emergency jam-releasing hidden danger coefficient is calculated by weighted summing up the stuck drill alarm value, the drilling stop characteristic value and the jam-releasing characteristic value.

[0011] Furthermore, the drilling management decision module is communicated with the duty rationality assessment module, and the drilling management decision module sends the drilling management high difficulty signal to the duty rationality assessment module. When the duty rationality assessment module receives the drilling management high difficulty signal, it performs duty rationality assessment analysis to determine whether to generate a duty warning signal, and sends the duty warning signal to the drilling construction supervision end.

[0012] Furthermore, the specific analysis process of the rationality assessment analysis of the duty is as follows: a circle with a radius of R1 is drawn with the extended displacement well as the center, and the delineated circular area is marked as the duty area; The number of managers in the duty area is collected through monitoring cameras and marked as the duty person inspection value, and the management time of the corresponding managers for drilling management in the historical stage and the number of management errors in the historical management process are collected and marked as management time measurement value and management error frequency value respectively, and the management time measurement value and management error frequency value are numerically calculated to obtain the management performance value; The management performance values ​​of all managers in the duty area are averaged to obtain the manager evaluation value, and the distance value between the corresponding duty personnel and the large displacement well is marked as the man-well distance inspection value, and the man-well distance inspection values ​​of all duty personnel are averaged to obtain the man-well distance table value; The actual value of the duty is obtained by numerically calculating the inspection value of the duty person, the evaluation value of the manager and the value of the distance table between the person and the well, and the actual value of the duty is compared with the preset actual value of the duty threshold. If the actual value of the duty does not exceed the preset actual value of the duty threshold, the corresponding actual value of the duty is marked as the abnormal value of the duty; if the actual value of the duty exceeds the preset actual value of the duty threshold, the corresponding actual value of the duty is marked as the excellent value of the duty; The number of abnormal on-duty values ​​within a unit time is collected and the ratio thereof is calculated with the number of actual on-duty values ​​to obtain an abnormal on-duty value, the average of all actual on-duty values ​​within a unit time is calculated to obtain an on-duty performance value, the on-duty performance value and the abnormal on-duty value are numerically compared with the preset on-duty performance threshold and the preset on-duty abnormal threshold respectively, if the on-duty performance value does not exceed the preset on-duty performance threshold or the abnormal on-duty value exceeds the preset on-duty abnormal threshold, a warning signal is generated; If the duty performance value exceeds the preset duty performance threshold and the duty abnormal value does not exceed the preset duty abnormal threshold, the number of duty abnormal values ​​between two adjacent groups of duty superior values ​​is marked as the duty abnormal value based on the time sequence, and the number of duty abnormal values ​​exceeding the preset duty abnormal threshold in unit time and the maximum value of the duty abnormal value are marked as the duty risk assessment value and the duty risk amplitude value respectively; The duty risk assessment value and the duty risk amplitude are numerically compared with the preset duty risk assessment threshold value and the preset duty risk amplitude threshold value respectively. If the duty risk assessment value or the duty risk amplitude exceeds the corresponding preset threshold value, a duty warning signal is generated.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the geological factors, physical and chemical factors and engineering factors are comprehensively analyzed before drilling to identify potential risks through the drilling preparation hidden danger analysis module. After eliminating the influence of environmental factors on drill sticking, the drilling operation of the extended displacement drilling is carried out, and the drilling operation process is effectively monitored and the real-time risk of drill sticking is accurately evaluated. When it is determined that there is a risk of drill sticking, the drilling construction supervision end issues an early warning, which can accurately judge the risk of drill sticking in real time and output an early warning in time, which is conducive to quickly taking reasonable emergency treatment measures to achieve unblocking, significantly improving the safety and efficiency of extended displacement drilling operations, and reducing the difficulty of drilling operation management; 2. In the present invention, the drilling management difficulty of the large displacement well drilling operation within the detection period is analyzed through the drilling management decision module, and the drilling management is strengthened in time when the drilling management high difficulty signal is generated to ensure the drilling efficiency and reduce the drilling risk. After the drilling management high difficulty signal is generated, the duty rationality evaluation module is used to monitor the subsequent drilling duty management status and conduct duty rationality evaluation and analysis. When the duty warning signal is generated, the duty site monitoring is strengthened and the on-site duty management personnel are reasonably arranged and deployed, so as to reduce the difficulty of drilling operation supervision and further improve drilling safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings; Figure 1 This is a system block diagram of Embodiment 1 of the present invention; Figure 2 This is a system block diagram of Embodiment 2 and Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Embodiment 1: Figure 1 As shown, the present invention proposes a real-time assessment system for the risk of stuck drill in extended-reach drilling, including a drilling preparation hidden danger analysis module, a drilling real-time monitoring module, a real-time assessment module for the risk of stuck drill, a stuck drill warning output module and a drilling construction supervision terminal; The drilling preparation hidden danger analysis module conducts a comprehensive analysis of geological factors, physical and chemical factors, and engineering factors before drilling, identifies potential risks and sends them to the drilling construction supervision end. Based on the identified potential risks, corresponding improvement measures are taken to eliminate the impact of environmental factors on drill sticking, significantly improve the safety and efficiency of extended reach drilling, reduce the risk of drill sticking, and reduce the difficulty of drilling construction management. The specific process is as follows: In terms of geological factor analysis, before drilling, geological exploration data and geological models are used to conduct a detailed analysis of key geological features on the drilling path, including fault planes and structural fold belts, to evaluate their impact on the risk of pipe sticking during drilling. Based on the evaluation results, the drilling direction is adjusted or the supporting effect of the drilling fluid is strengthened during drilling, and the appropriate drill bit and drilling parameters are selected; For the analysis of physical and chemical factors, the physical and chemical indicators of hydration and expansion of shale in the drilling fluid are monitored, and their impact on wellbore stability is analyzed in combination with laboratory research results and historical data, providing a basis for the selection of drilling fluid and performance adjustment; for the analysis of engineering factors, a comprehensive analysis of engineering factors including drilling fluid density and performance is conducted, and their impact on the risk of stuck pipe is evaluated in combination with drilling technology and operating conditions, providing guidance for the optimization of drilling design and operating strategies.

[0017] After eliminating the influence of environmental factors on the stuck drill, the drilling operation of the extended reach drilling is carried out. The real-time monitoring module of the drilling monitors the real-time data of key parameters in the drilling process in real time, and sends the collected drilling parameter data to the real-time assessment module of the stuck drill risk. It should be noted that the key parameters to be monitored include rotation torque, drilling speed and pump pressure. The stuck drill risk real-time assessment module assesses the real-time risk of stuck drill in the extended reach drilling operation based on the received drilling parameter data, and sends the real-time assessment results to the stuck drill warning output module, which can accurately judge the risk of stuck drill in real time and output it in time, which is conducive to making reasonable emergency measures quickly to achieve the release of the stuck drill, and further ensure the safety of the drilling construction; the specific analysis process is as follows: The real-time rotation torque borne by the drill bit in the extended reach well drilling operation is obtained (referring to the rotation torque borne by the drill bit in the drilling operation. A sudden increase in torque may mean that the drill bit has encountered a hard formation or a stuck drill bit during the drilling process). If the rotation torque is currently increasing, the difference between the two sets of real-time rotation torques at adjacent moments is calculated to obtain the instantaneous torque growth value; And obtain the real-time drilling speed in the extended reach well drilling operation (referring to the distance drilled by the drilling machine in a certain period of time. A sudden drop in drilling speed may mean that the drill bit has encountered a difficult-to-drill formation or there is a risk of the drill bit getting stuck). If the current drilling speed is decreasing, the difference between the two sets of real-time drilling speeds at adjacent moments is calculated to obtain the instantaneous decrease in drilling speed (i.e., the value of the decrease in drilling speed at adjacent moments). The instantaneous increase value of the torque and the instantaneous decrease value of the drilling speed are numerically compared with the preset instantaneous increase threshold of the torque and the preset instantaneous decrease threshold of the drilling speed. If the instantaneous increase value of the torque or the instantaneous decrease value of the drilling speed exceeds the corresponding preset threshold, it is judged that there is a risk of stuck drill.

[0018] Further, if the torque instantaneous increase value and the drilling speed instantaneous decrease value do not exceed the corresponding preset thresholds, the current real-time rotation torque and real-time drilling speed are marked as the torque analysis value and the drilling speed analysis value respectively; And collect the real-time pump pressure data of extended reach well drilling operation (referring to the sum of drilling fluid pressure at the outlet of drilling pump and drill string friction loss. Too high pump pressure may mean that there is blockage or wear in the drilling fluid delivery pipeline, resulting in poor flow of drilling fluid and increasing the risk of drill bit sticking. On the contrary, too low pump pressure may indicate insufficient drilling fluid supply, which will also affect the smooth progress of drilling operation and increase the possibility of drill bit sticking). Calculate the difference between the real-time pump pressure data and the median of the preset pump pressure data range and take the absolute value to obtain the pump pressure analysis value; The torque analysis value T, the drilling speed analysis value P and the pump pressure analysis value Z are numerically calculated using the formula Yaw=c×T+f / P+g×Z to obtain the stuck drill risk coefficient Yaw, wherein c, f and g are preset proportional coefficients whose values ​​are greater than zero, and the larger the value of the stuck drill risk coefficient Yaw is, the greater the risk of currently existing stuck drill. The stuck drill risk coefficient Yaw is numerically compared with the preset stuck drill risk coefficient threshold value. If the stuck drill risk coefficient Yaw exceeds the preset stuck drill risk coefficient threshold value, it indicates that the current stuck drill risk is relatively large, and it is judged that there is a stuck drill risk.

[0019] When it is determined that there is a risk of drill stuck, the drill stuck warning output module generates a drill stuck alarm signal and sends it to the drilling construction supervision end. The drilling construction supervision end issues a warning upon receiving the drill stuck alarm signal, so as to promptly discover and deal with potential drill stuck risks, thereby ensuring the safety and efficiency of drilling operations.

[0020] Embodiment 2: Figure 2 As shown, the difference between this embodiment and the first embodiment is that the drill stuck warning output module is communicatively connected to the drilling management decision module, the drill stuck warning output module sends the drill stuck alarm signal to the drilling management decision module, the drilling management decision module sets a detection period, analyzes the drilling management difficulty of the extended reach well drilling operation within the detection period, and determines whether to generate a drilling management high difficulty signal based on the analysis; The high-difficulty signal of drilling management is sent to the drilling construction supervision end. When the drilling construction supervision end receives the high-difficulty signal of drilling management, it issues a corresponding warning, which can reasonably analyze and accurately evaluate the difficulty of drilling operation management for large-reach wells during the detection period, so as to remind management personnel to strengthen drilling management in time, ensure drilling efficiency and reduce drilling risks. The specific analysis process is as follows: The number of times the drill stuck alarm signal is generated during the detection period is collected and marked as a drill stuck alarm value, and the drill stuck alarm value is numerically compared with a preset drill stuck alarm threshold. If the drill stuck alarm value exceeds the preset drill stuck alarm threshold, it indicates that drilling risk alarms are frequent during the detection period and the drilling management is difficult, and a drilling management high difficulty signal for the extended reach well drilling operation is generated; If the drill stuck alarm value does not exceed the preset drill stuck alarm threshold, the generation time of the corresponding drill stuck alarm signal is collected and marked as the drill stuck time, and the time of stopping drilling is collected and marked as the drilling stop time, and the interval between the drilling stop time and the drill stuck time is marked as the drilling stop reaction value, wherein, when the value of the drilling stop reaction value is too large, it indicates that the drilling equipment has not been stopped in time; all the drilling stop reaction values ​​during the detection period are averaged to obtain the drilling stop characteristic value; The time when the corresponding drill stuck alarm signal is released after emergency treatment is collected and marked as the jam-releasing time, and the interval between the jam-releasing time and the corresponding drill stop time is marked as the jam-releasing efficiency value. When the value of the jam-releasing efficiency value is too large, it indicates that the emergency treatment efficiency of the management personnel is not good; all the jam-releasing efficiency values ​​in the detection period are averaged to obtain the jam-releasing characteristic value; The emergency jamming relief hidden danger coefficient W is calculated by weighted summing the drill stuck alarm value X, the drilling stop characteristic value L and the jam relief characteristic value N through the formula W=m×X+n×L+t×N; wherein m, n and t are preset proportional coefficients with values ​​greater than zero, and the larger the value of the emergency jamming relief hidden danger coefficient W is, the greater the overall difficulty of drilling management during the detection period is, and the more it is necessary to strengthen the drilling operation management of the extended reach well; The emergency jamming relief hidden danger coefficient is numerically compared with the preset emergency jamming relief hidden danger coefficient threshold. If the emergency jamming relief hidden danger coefficient exceeds the preset emergency jamming relief hidden danger coefficient threshold, it indicates that the overall difficulty of drilling management during the detection period is relatively large, and it is necessary to strengthen the drilling operation management of the extended displacement well in time, then a high difficulty signal of drilling management for the extended displacement well drilling operation is generated.

[0021] Embodiment 3: Figure 2 As shown, the difference between this embodiment and the first and second embodiments is that the drilling management decision module is connected to the duty rationality assessment module in communication, the drilling management decision module sends the drilling management high difficulty signal to the duty rationality assessment module, and the duty rationality assessment module monitors the subsequent drilling duty management status when receiving the drilling management high difficulty signal, and determines whether to generate a duty warning signal through duty rationality assessment analysis; The on-duty warning signal is sent to the drilling construction supervision end. When the drilling construction supervision end receives the on-duty warning signal, it issues a corresponding warning, so as to timely strengthen the monitoring of on-duty on-site management personnel, and reasonably arrange and deploy on-duty on-site management personnel, reduce the difficulty of drilling operation supervision and further improve drilling safety; the specific analysis process is as follows: A circle with a radius of R1 is drawn with the extended displacement well as the center, preferably, R1 is 20 meters; and the demarcated circular area is marked as the guard area; the number of managers in the guard area is collected through the monitoring camera and marked as the guard inspection value, and the management time of the corresponding managers for drilling management in the historical stage and the number of management errors in the historical management process are collected and marked as the management time measurement value and the management error frequency value respectively; The management performance value Huy is obtained by numerically calculating the management time measurement value Q and the management error frequency value R through the formula Huy=s×Q / (e×R+1); wherein s and e are preset proportional coefficients with values ​​greater than zero, and the larger the value of the management performance value Huy is, the stronger the management ability of the corresponding management personnel for the drilling operation is, and the more conducive it is to ensure the safety of the drilling operation; The management performance values ​​of all managers in the duty area are averaged to obtain the manager evaluation value, and the distance value between the corresponding duty personnel and the large displacement well is marked as the man-well distance inspection value, and the man-well distance inspection values ​​of all duty personnel are averaged to obtain the man-well distance table value; The actual value of the on-duty personnel Bry is obtained by numerically calculating the on-duty personnel inspection value J, the manager evaluation value K and the person-well distance table value E through the formula Bry=(ah×J+au×K) / (ap×E+3.824); among them, ah, au, ap are preset proportional coefficients with values ​​greater than zero, and the larger the value of the actual value of the on-duty personnel Bry, the smaller the overall real-time management risk for the large displacement well is. The actual value of the on-duty guard Bry is numerically compared with the preset actual value of the on-duty guard threshold. If the actual value of the on-duty guard Bry does not exceed the preset actual value of the on-duty guard threshold, it indicates that the real-time management risk for the large displacement well is generally large, and the corresponding actual value of the on-duty guard is marked as the abnormal value of the on-duty guard; if the actual value of the on-duty guard Bry exceeds the preset actual value of the on-duty guard threshold, it indicates that the real-time management risk for the large displacement well is generally small, and the corresponding actual value of the on-duty guard is marked as the excellent value of the on-duty guard; The number of abnormal on-duty values ​​in a unit time is collected and the ratio is calculated with the number of actual on-duty values ​​to obtain the abnormal on-duty value. The average of all actual on-duty values ​​in a unit time is calculated to obtain the on-duty performance value. The on-duty performance value and the abnormal on-duty value are numerically compared with the preset on-duty performance threshold and the preset on-duty abnormal threshold. If the on-duty performance value does not exceed the preset on-duty performance threshold or the abnormal on-duty value exceeds the preset on-duty abnormal threshold, it indicates that the on-duty management performance of the large displacement well in a unit time is poor and the potential safety hazard is large, then an on-duty warning signal is generated. If the duty performance value exceeds the preset duty performance threshold and the duty abnormal value does not exceed the preset duty abnormal threshold, the number of duty abnormal values ​​between two adjacent groups of duty superior values ​​is marked as the duty abnormal value based on the time sequence, and the number of duty abnormal values ​​exceeding the preset duty abnormal threshold in unit time and the maximum value of the duty abnormal value are marked as the duty risk assessment value and the duty risk amplitude value respectively; The duty risk assessment value and the duty risk amplitude are numerically compared with the preset duty risk assessment threshold value and the preset duty risk amplitude threshold value respectively. If the duty risk assessment value or the duty risk amplitude exceeds the corresponding preset threshold value, it indicates that the duty management performance for the large displacement well in unit time is poor and the safety hazard is large, then a duty warning signal is generated.

[0022] The working principle of the present invention is as follows: when in use, the geological factors, physical and chemical factors and engineering factors are comprehensively analyzed before drilling through the drilling preparation hidden danger analysis module, potential risks are identified and sent to the drilling construction supervision end, corresponding improvement measures are made based on the identified potential risks to eliminate the influence of environmental factors on drill sticking, and the drilling operation of large displacement drilling is carried out after eliminating the influence of environmental factors on drill sticking. The drilling real-time monitoring module monitors the real-time data of key parameters during the drilling process in real time, and the real-time assessment module for drill sticking risk assesses the real-time risk of drill sticking in large displacement drilling operations based on the drilling parameter data. When it is determined that there is a risk of drill sticking, a drill sticking alarm signal is generated through the drill sticking early warning output module and sent to the drilling construction supervision end. The drill sticking risk can be judged in real time and accurately and output in time, which is conducive to quickly making reasonable emergency treatment measures to achieve unblocking, significantly improving the safety and efficiency of large displacement drilling operations and reducing the difficulty of drilling operation management.

[0023] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A real-time assessment system for the risk of stuck pipe in extended reach drilling, characterized in that: It includes a drilling preparation hidden danger analysis module, a drilling real-time monitoring module, a stuck drill risk real-time assessment module, a stuck drill warning output module and a drilling construction supervision terminal; the drilling preparation hidden danger analysis module conducts a comprehensive analysis of geological factors, physical and chemical factors and engineering factors before drilling, identifies potential risks and sends them to the drilling construction supervision terminal, and takes corresponding improvement measures based on the identified potential risks to eliminate the impact of environmental factors on stuck drill; After eliminating the influence of environmental factors on the stuck drill, the drilling operation of the extended reach drilling is carried out. The real-time monitoring module of the drilling monitors the real-time data of key parameters in the drilling process in real time, and sends the collected drilling parameter data to the real-time assessment module of the stuck drill risk; The real-time drill stuck risk assessment module assesses the real-time risk of drill stuck in large-displacement drilling operations based on the received drilling parameter data, and sends the real-time assessment results to the drill stuck warning output module; when it is determined that there is a drill stuck risk, the drill stuck warning output module generates a drill stuck alarm signal and sends it to the drilling construction supervision end.

2. The real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 1, characterized in that: In terms of geological factor analysis, geological exploration data and geological models are used before drilling to analyze key geological features on the drilling path, including fault planes and structural fold belts, to assess their impact on the risk of stuck pipe during drilling; For the analysis of physical and chemical factors, the physical and chemical indicators of hydration and expansion of shale in the drilling fluid are monitored, and their impact on wellbore stability is analyzed in combination with laboratory research results and historical data. For the analysis of engineering factors, a comprehensive analysis of engineering factors including drilling fluid density and performance is conducted, and their impact on the risk of stuck pipe is evaluated in combination with drilling technology and operating conditions.

3. The real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 1, characterized in that: The specific analysis process of the real-time assessment module for stuck drill risk is as follows: the instantaneous torque increase value and the instantaneous drilling speed decrease value are numerically compared with the preset torque instantaneous increase threshold and the preset drilling speed instantaneous decrease threshold respectively; if the torque instantaneous increase value or the drilling speed instantaneous decrease value exceeds the corresponding preset threshold, it is judged that there is a risk of stuck drill.

4. The real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 3, characterized in that: If the instantaneous torque increase value and the instantaneous drilling speed decrease value do not exceed the corresponding preset threshold values, the drill stuck risk coefficient is obtained by numerically calculating the torque analysis value, the drilling speed analysis value and the pump pressure analysis value. If the drill stuck risk coefficient exceeds the preset drill stuck risk coefficient threshold value, it is judged that there is a drill stuck risk.

5. The real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 1, characterized in that: The stuck drill warning output module is communicatively connected to the drilling management decision module. The stuck drill warning output module sends the stuck drill alarm signal to the drilling management decision module. The drilling management decision module analyzes the drilling management difficulty of the extended reach well drilling operation within the detection period, and determines whether to generate a high-difficulty drilling management signal based on this, and sends the high-difficulty drilling management signal to the drilling construction supervision end.

6. A real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 5, characterized in that: The specific analysis process of the drilling management decision module is as follows: if the stuck drill alarm value exceeds the preset stuck drill alarm threshold, a high-difficulty signal for drilling management of extended-reach well drilling operations is generated; if the stuck drill alarm value does not exceed the preset stuck drill alarm threshold, an emergency jamming assessment analysis is performed to obtain an emergency jamming hidden danger coefficient; if the emergency jamming hidden danger coefficient exceeds the preset emergency jamming hidden danger coefficient threshold, a high-difficulty signal for drilling management of extended-reach well drilling operations is generated.

7. A real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 6, characterized in that: The specific analysis process of emergency jamming release evaluation analysis is as follows: all drilling stop reaction values ​​during the detection period are averaged to obtain the drilling stop characteristic value; all jamming release efficiency values ​​during the detection period are averaged to obtain the jamming release characteristic value; The emergency jamming hazard coefficient is calculated by taking the weighted sum of the drill stuck alarm value, the drilling stop characteristic value and the jamming release characteristic value.

8. The real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 5, characterized in that: The drilling management decision module is communicated with the duty rationality assessment module. The drilling management decision module sends the drilling management high difficulty signal to the duty rationality assessment module. When the duty rationality assessment module receives the drilling management high difficulty signal, it performs duty rationality assessment analysis to determine whether to generate a duty warning signal, and sends the duty warning signal to the drilling construction supervision end.

9. A real-time assessment system for the risk of stuck pipe in extended reach drilling according to claim 8, characterized in that: The specific analysis process of the duty rationality assessment and analysis is as follows: if the duty performance value does not exceed the preset duty performance threshold or the duty abnormal value exceeds the preset duty abnormal threshold, a duty warning signal is generated; if the duty performance value exceeds the preset duty performance threshold and the duty abnormal value does not exceed the preset duty abnormal threshold, the duty risk assessment value and the duty risk amplitude value are numerically compared with the preset duty risk assessment threshold and the preset duty risk amplitude value respectively; if the duty risk assessment value or the duty risk amplitude value exceeds the corresponding preset threshold, a duty warning signal is generated.

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