An off-grid oil well intelligent control system and method

Abstract

The invention relates to the technical field of oil well program control systems, and discloses an off-grid oil well intelligent control system and method, the system comprising an oil well drilling behavior self-checking module, an oil well drilling fluid control parameter analysis module, and an oil well drilling control execution module; the system dynamically feeds back formation pressure parameters at the drill bit through a pressure measuring device, combined with an intelligent recognition algorithm and scientifically preset drilling fluid density parameters required for different formation pressures, to perform intelligent analysis of the drilling fluid density required for balancing the formation pressure at the drill pipe and drill bit position in the oil well; the system adopts a drilling pressure torque measurement pup joint to collect real-time formation working condition information at the drill bit online, combined with target drilling fluid density parameters, intelligent search algorithms and scientific storage of different drilling fluid densities and drilling fluid types corresponding to formation working conditions, to perform precise and efficient analysis of the drilling fluid type required for balancing the formation pressure at the drill pipe and drill bit position in the oil well, thereby improving the drilling fluid parameter control precision and accuracy of the oil well control system.

Description

Technical Field

[0001] The present invention relates to the technical field of oil well program control systems, and in particular to an off-grid type oil well intelligent control system and method. Background Art

[0002] Off-grid oil well control system refers to the oil well control system based on local area network. It is both a well control system and a kick control system. The basic principle is to control the formation pore pressure by pressure or density method, so as to maintain the pressure balance in the well and ensure the smooth progress of oil drilling operation. Well control is to implement the control of oil and gas well pressure, and use the pressure of the wellbore system to control the formation pressure; the oil well control system includes the first-level well control system, the second-level well control system and the third-level well control system, among which the first-level well control system is the most widely used. The first-level well control system is also called the hydrostatic pressure method, also known as the drill pipe method. The drill pipe method is a method of balancing the formation pressure by controlling the density of the drilling fluid. In the specific operation, the drilling fluid enters the bottom of the well through the drill pipe, forming a pressure balanced with the formation, preventing oil, water or gas from overflowing from the bottom of the well. In order to control the density of the drilling fluid, it can be adjusted by adding materials to the drilling fluid, such as adding salt water, calcium compounds, etc. The density of the drilling fluid will gradually increase and reach a level equal to the formation pressure, so there will be no excessive or low pressure, thereby preventing the occurrence of blowouts and well leaks. However, the existing primary well control system controls the process of oil, water and gas in the oil well formation forming formation fluids entering the well. It cannot efficiently and accurately match the drilling fluid density according to the formation pressure, nor can it scientifically analyze the drilling fluid type according to the drilling fluid density and formation conditions, which reduces the intelligence and reliability of the oil well control system.

[0003] The Chinese invention patent application with publication number CN102122161A discloses a method for controlling inter-pumping of oil wells, which generates a pump performance diagram of the oil well based on the surface performance diagram of the oil well and the basic parameters of the oil well; and controls inter-pumping of the oil wells based on the pump performance diagram. Also disclosed is an inter-pumping control system for oil wells, including: an acquisition module, a surface performance diagram generation module, a pump performance diagram generation module, and an inter-pumping control module. The inter-pumping control method and system for oil wells provided in accordance with the present invention can combine the oil well discharge law, analyze the optimal inter-pumping start point and inter-pumping time in real time, and realize remote intelligent self-dynamic inter-pumping control of the oil well; however, the above technical scheme cannot scientifically analyze the density and type of drilling fluid during the oil well drilling process, which reduces the safety of oil well drilling operations. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In order to solve the problem that the above-mentioned existing first-level well control system controls the process of oil, water and gas in the oil well formation forming formation fluid entering the well, it cannot efficiently and accurately match the drilling fluid density according to the formation pressure, nor can it scientifically analyze the drilling fluid type according to the drilling fluid density and formation conditions, which reduces the intelligence and reliability of the oil well control system. The above-mentioned autonomous detection of drilling operation behavior, dynamic collection of real-time formation pressure at the drill bit, scientific matching of well control drilling fluid density, dynamic collection of real-time formation condition information at the drill bit, accurate analysis of well control drilling fluid type, efficient and scientific execution of well control operations, and improvement of the accuracy and applicability of well control operations are achieved.

[0006] (II) Technical solution

[0007] The present invention is implemented by the following technical scheme: an off-grid oil well intelligent control method, the method comprising the following steps:

[0008] S1. Collecting real-time operating status image data of drilling equipment;

[0009] S2, performing drilling work behavior recognition processing of the drilling rod equipment based on the real-time operation status image data of the drilling rod equipment and the working status image data of the drilling rod equipment to generate oil well drilling work behavior recognition data, and when it is not working, repeating steps S1 and S2 until it is working;

[0010] S3, when working, collect real-time formation pressure data at the drill bit;

[0011] S4, performing numerical analysis and processing of the drilling fluid density required for different formation pressures at the drill bit of the drill pipe in the oil well according to the real-time formation pressure data at the drill bit and the drilling fluid density data required for different formation pressures, and generating target drilling fluid density data;

[0012] S5, collecting real-time formation working condition characteristic text data at the drill bit;

[0013] S6, performing identification processing of the drilling fluid type required for different formation pressures at the drill bit of the drill pipe in the oil well according to the target drilling fluid density at the drill bit of the drill pipe in the oil well, the formation condition information and the drilling fluid type data corresponding to different drilling fluid densities and formation conditions, and generating target drilling fluid object data;

[0014] S7. Construct oil well well control drilling fluid characteristic data and provide feedback to execute oil well drilling control real-time adjustment operations.

[0015] Preferably, the operation steps of collecting the real-time operating status image data of the drill pipe equipment are as follows:

[0016] S11, using a camera lens in combination with the local area network of the oil well drilling platform to collect online operating status images of the oil well drilling equipment and generate a real-time operating status image data set of the drilling equipment , ;in Indicates the collected The real-time operating status image data of the drill pipe equipment, Indicates the maximum number of real-time operating status images of drilling equipment.

[0017] Preferably, the drilling work behavior identification processing of the drilling rod equipment is performed based on the real-time operation status image data of the drilling rod equipment and the working status image data of the drilling rod equipment to generate the oil well drilling work behavior identification data. When it is not working, the steps S1 and S2 are repeatedly executed until it is working as follows:

[0018] S21. Establishing a drill pipe equipment working status image data set , ;in Indicates Drill pipe equipment working status image data, Indicates the maximum value of the number of working status images of the drilling rod equipment; the working status image data of the drilling rod equipment indicates the operating status image data of the oil well drilling rod equipment when performing drilling operations;

[0019] S22, using a bidirectional search algorithm to collect the real-time operating status image data of the drill pipe equipment The real-time operating status image data of the drilling equipment described in A data set of working status images of the drilling equipment The working status image data of the drilling rod equipment described in Perform image feature matching and generate oil well drilling work behavior recognition data based on the image feature matching results ;

[0020] when and If the image feature matching is successful, it means that the oil well drilling equipment is in working condition, and the oil well drilling work behavior recognition data is output. for work;

[0021] when and If the image features are not matched successfully, it means that the oil well drilling equipment is not in working state, then the oil well drilling work behavior recognition data is output. In this case, steps S11 and S22 are repeated until the oil well drilling work behavior identification data is For work.

[0022] Preferably, when the drill is working, the operation steps of collecting real-time formation pressure data at the drill bit are as follows:

[0023] S31. Use pressure measurement equipment in conjunction with the local area network of the oil well drilling platform to collect formation pressure parameters at the working position of the drill bit at the end of the drill pipe in the oil well online and generate real-time formation pressure data at the drill bit. ,in The unit is MPa, and the pressure measuring equipment includes any one of a formation tester and a pressure gauge.

[0024] Preferably, the operation steps of performing numerical analysis and processing on the drilling fluid density required for different formation pressures at the drill bit of the drill pipe in the oil well according to the real-time formation pressure data at the drill bit and the drilling fluid density data required for different formation pressures to generate the target drilling fluid density data are as follows:

[0025] S41. Establish the drilling fluid density data set required for different formation pressures , ;in Indicates The drilling fluid density data required for different formation pressures corresponding to different formation pressures, Indicates the maximum number of formation pressure types; The unit is kilograms per liter. The drilling fluid density data required for different formation pressures represent the drilling fluid concentration data used to balance formation pressures of different values ​​in the oil well.

[0026] S42, the real-time formation pressure data at the drill bit The drilling fluid density data set required for different formation pressures The drilling fluid density data required for different formation pressures described in According to the formation pressure value matching, analyze the real-time formation pressure data at the drill bit The corresponding drilling fluid density data required for different formation pressures , and generate the target drilling fluid density data through data identification , execute to generate the target drilling fluid density data The specific steps are as follows:

[0027] S421, initializing parameters and updating the maximum number of iterations T of the algorithm;

[0028] S422, initializing the drilling fluid density search seagull population position, that is, the drilling fluid density search seagull population updates the drilling fluid density data set required at different formation pressures Position in the search space;

[0029] S423, calculating the drilling fluid density data set required for the different formation pressures All the drilling fluid density data required for different formation pressures Real-time formation pressure data at the drill bit The fitness value of the formation pressure in the middle and the required drilling fluid density data set at the different formation pressures are retained The search space is related to the real-time formation pressure data at the drill bit The drilling fluid density data required for the different formation pressures with the largest formation pressure adaptability value The global optimal position of

[0030] S424, Migration, Global Search: Drilling Fluid Density Search The migration behavior of seagulls mainly consists of three steps. The first step is to meet the drilling fluid density data set required for different formation pressures. The search space has different drilling fluid densities to search for conditions to avoid collisions between individual seagulls; secondly, the drilling fluid density data set required for different formation pressures is calculated. Search space and real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to match the formation pressure The best position direction; third, according to the real-time formation pressure data at the drill bit The drilling fluid density data required for the different formation pressures that best match the formation pressure Move the direction of the best position to a new position;

[0031] S4241, calculate the drilling fluid density and search for the drilling fluid density data set required by Seagull at different formation pressures Search for new positions in the space that do not collide with adjacent drilling fluid density search seagulls during movement ; , ;in Represents the drilling fluid density search seagull required drilling fluid density data set at different formation pressures The current position in the search space, Indicates the current iteration number; Represents the drilling fluid density search seagull required drilling fluid density data set at different formation pressures Movement behavior in the search space; Indicates control A function of the frequency of change, Indicates the maximum number of iterations;

[0032] S4242, calculating the required drilling fluid density data set at different formation pressures Search space and real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to match the formation pressure The best position direction ; , ,in The drilling fluid density data set required for the different formation pressures is represented Search the search space for the real-time formation pressure data at the drill bit. Drilling fluid density data required for different formation pressures to match the formation pressure The current best position, Search for drilling fluid density for Seagull in different formation pressures. Current position in the search space; represents a random number that balances global and local search capabilities, Represents a random number in the interval [0,1];

[0033] S4243, based on the real-time formation pressure data at the drill bit The drilling fluid density data required for the different formation pressures that best match the formation pressure Move to the new position in the direction of the best position , , that is, the required drilling fluid density data set at different formation pressures according to the direction of the optimal position Search the search space for the real-time formation pressure data at the drill bit. The drilling fluid density data required for all the different formation pressures to match the formation pressure new location;

[0034] S425. Attack prey, local search, drilling fluid density search Seagull required drilling fluid density data set at different formation pressures The search space is attacked by the real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to match the formation pressure The prey is spirally moving in the air, while identifying the real-time formation pressure data at the drill bit. The drilling fluid density data required for all the different formation pressures to match the formation pressure , drilling fluid density to search for new locations of seagulls after attacking prey , , that is, the drilling fluid density search Seagull requires a data set of drilling fluid density at different formation pressures Search the search space for the real-time formation pressure data at the drill bit. Drilling fluid density data required for different formation pressures to match the formation pressure prey;

[0035] S426: Determine whether the maximum number of iterations is met, and then output the real-time formation pressure data at the drill bit. Drilling fluid density data required for different formation pressures to match the formation pressure ; If not satisfied, return to step S423;

[0036] S427, outputting step S426 and the real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to match the formation pressure Generate target drilling fluid density data after data identification ,in The unit is kilograms per liter.

[0037] Preferably, the operation steps of collecting the real-time formation working condition characteristic text data at the drill bit are as follows:

[0038] S51, using the drilling pressure torque measurement sub in combination with the local area network of the oil well drilling platform to collect the formation geological characteristic information at the working position of the drill bit at the end of the drill pipe in the oil well online, and generate real-time formation working condition characteristic text data at the drill bit. The real-time formation working condition characteristic text data at the drill bit includes formation rock composition structure, formation rock type and formation rock hardness.

[0039] Preferably, the steps of performing identification processing of the drilling fluid type required for different formation pressures at the drill bit of the drill pipe in the oil well according to the target drilling fluid density at the drill bit of the drill pipe in the oil well, the formation condition information and the drilling fluid type data corresponding to different drilling fluid densities and formation conditions to generate the target drilling fluid object data are as follows:

[0040] S61. Establish a data set of drilling fluid types corresponding to different drilling fluid densities and formation conditions , ;in Indicates the matching of different drilling fluid density and formation conditions. Drilling fluid type data corresponding to different drilling fluid densities and formation conditions, Indicates the maximum number of drilling fluid types, including water, mud, clay-free flushing fluid, emulsion and foam;

[0041] S62, using an iterative deepening search algorithm to search the target drilling fluid density data , the real-time formation working condition characteristic text data at the drill bit Drilling fluid type data set corresponding to the different drilling fluid densities and formation conditions Drilling fluid type data corresponding to different drilling fluid densities and formation conditions described in According to the matching of drilling fluid density and formation condition characters, search for the target drilling fluid density data , the real-time formation working condition characteristic text data at the drill bit The matching drilling fluid type data for the different drilling fluid densities and formation conditions , and generate the target drilling fluid object data through data identification .

[0042] Preferably, the steps of constructing the oil well control drilling fluid characteristic data and feeding back to perform the oil well drilling control real-time adjustment operation are as follows:

[0043] S71, the target drilling fluid density data , the target drilling fluid object data Generate oil well control drilling fluid characteristic data through data combination and transmit the oil well control drilling fluid characteristic data through the drilling platform local area network Online transmission to the drilling management platform;

[0044] S72, the drilling management platform controls the drilling fluid characteristic data of the oil well The concentration and type parameters of the drilling fluid are transported to the working position of the drill pipe and drill bit in the oil well through the drilling fluid purification equipment to perform real-time adjustment operations of oil well drilling control.

[0045] An off-grid oil well intelligent control system, used to implement the off-grid oil well intelligent control method, the system includes an oil well drilling behavior self-checking module, an oil well drilling fluid control parameter analysis module, and an oil well drilling control execution module;

[0046] The oil well drilling behavior self-checking module includes a drill pipe equipment real-time operation status image acquisition unit, a drill pipe equipment working status image storage unit, and an oil well drilling behavior recognition unit;

[0047] The real-time operation status image acquisition unit of the drilling rod equipment acquires the real-time operation status image data of the drilling rod equipment through the shooting lens; the working status image storage unit of the drilling rod equipment is used to store the working status image data of the drilling rod equipment; the oil well drilling behavior recognition unit performs drilling work behavior recognition processing of the drilling rod equipment based on the real-time operation status image data of the drilling rod equipment and the working status image data of the drilling rod equipment to generate the oil well drilling work behavior recognition data;

[0048] The oil well drilling fluid control parameter analysis module includes a real-time formation pressure acquisition unit at the drill bit, a drilling fluid density storage unit required for different formation pressures, a target drilling fluid density analysis unit, a real-time formation condition information acquisition unit at the drill bit, a drilling fluid type storage unit corresponding to different drilling fluid densities and formation conditions, and a target drilling fluid object recognition unit;

[0049] The real-time formation pressure acquisition unit at the drill bit acquires the real-time formation pressure data at the drill bit through a pressure measuring device; the drilling fluid density storage unit required for different formation pressures is used to store the drilling fluid density data required for different formation pressures; the target drilling fluid density analysis unit performs numerical analysis of the drilling fluid density required for different formation pressures at the drill bit in the oil well based on the real-time formation pressure data at the drill bit and the drilling fluid density data required for different formation pressures to generate target drilling fluid density data; the real-time formation working condition information acquisition unit at the drill bit, The real-time formation condition feature text data at the drill bit is collected by measuring the drilling pressure torque while drilling through the short section; the storage unit for different drilling fluid densities and drilling fluid types corresponding to the formation conditions is used to store the data of different drilling fluid densities and drilling fluid types corresponding to the formation conditions; the target drilling fluid object identification unit performs the drilling fluid type identification processing required for different formation pressures at the drill bit of the drill pipe in the oil well according to the target drilling fluid density and formation condition information at the drill pipe in the oil well and the data of drilling fluid types corresponding to the different drilling fluid densities and formation conditions, and generates the target drilling fluid object data;

[0050] The oil well drilling control execution module includes an oil well control drilling fluid characteristic information generation feedback unit and an oil well drilling control operation real-time adjustment unit;

[0051] The oil well well control drilling fluid characteristic information generation feedback unit is used to construct the oil well well control drilling fluid characteristic data and feed it back to the drilling management platform; the oil well drilling control operation real-time adjustment unit, the drilling management platform performs the oil well drilling control real-time adjustment operation based on the oil well well control drilling fluid characteristic data combined with the drilling fluid purification equipment.

[0052] (III) Beneficial effects

[0053] The present invention provides an off-grid oil well intelligent control system and method, which has the following beneficial effects:

[0054] 1. Accurately obtain the real-time operating status image parameters of the drill pipe equipment online through the shooting lens to provide real data support for autonomous detection of drilling operation behavior; standardize the storage of the working status image parameters of the drill pipe equipment and combine the intelligent search algorithm with the real-time operating status image parameters of the drill pipe equipment to intelligently judge the drilling work behavior, realize accurate and efficient identification of oil well drilling work behavior, and realize intelligent and reliable control of the oil well control system.

[0055] 2. Dynamically feedback the formation pressure parameters at the drill bit through the pressure measurement equipment, combined with the intelligent recognition algorithm and the scientific preset drilling fluid density parameters required for different formation pressures, to intelligently analyze the drilling fluid density required to balance the formation pressure at the drill bit position in the oil well, so as to achieve efficient and accurate identification of the target drilling fluid density for balancing the formation pressure during the oil well drilling operation; the drilling pressure torque measurement pup section is used to collect real-time formation working condition information at the drill bit online, combined with the target drilling fluid density parameters, intelligent search algorithm and scientific storage of different drilling fluid densities and formation working conditions. The corresponding drilling fluid types are used to accurately and efficiently analyze the drilling fluid type required to balance the formation pressure at the drill bit position in the oil well, so as to achieve scientific and efficient evaluation of the drilling fluid objects required for the oil well drilling process, and improve the drilling fluid parameter control precision and accuracy of the oil well control system.

[0056] 3. By scientifically constructing the oil well control drilling fluid information based on the target drilling fluid density and type parameters and feeding it back to the drilling management platform, the real-time and reliable collection and feedback of the drilling fluid information required for oil well drilling can be achieved; the drilling management platform efficiently and scientifically performs real-time adjustment operations of oil well drilling control based on the oil well control drilling fluid information combined with the drilling fluid purification equipment, thereby improving the accuracy and applicability of the well control operations of the oil well control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic diagram of a module of an off-grid oil well intelligent control system provided by the present invention;

[0058] Figure 2 The present invention provides a flow chart of an off-grid oil well intelligent control method. DETAILED DESCRIPTION

[0059] 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.

[0060] The embodiments of the off-grid oil well intelligent control system and method are as follows:

[0061] Example 1

[0062] See also Figure 1 - Figure 2 , an off-grid oil well intelligent control method, the method comprising the following steps:

[0063] S1. Collecting real-time operating status image data of drilling equipment;

[0064] S2, based on the real-time operation status image data of the drilling rod equipment and the working status image data of the drilling rod equipment, the drilling work behavior recognition processing of the drilling rod equipment is performed to generate the oil well drilling work behavior recognition data, when it is not working, repeating the steps S1 and S2 until it is working;

[0065] S3, when working, collect real-time formation pressure data at the drill bit;

[0066] S4, performing numerical analysis and processing of the drilling fluid density required for different formation pressures at the drill bit of the drill pipe in the oil well according to the real-time formation pressure data at the drill bit and the drilling fluid density data required for different formation pressures, and generating target drilling fluid density data;

[0067] S5, collecting real-time formation working condition characteristic text data at the drill bit;

[0068] S6, performing identification processing of the drilling fluid type required for different formation pressures at the drill bit of the drill pipe in the oil well according to the target drilling fluid density at the drill bit of the drill pipe in the oil well, the formation condition information and the drilling fluid type data corresponding to different drilling fluid densities and formation conditions, and generating target drilling fluid object data;

[0069] S7. Construct oil well well control drilling fluid characteristic data and provide feedback to execute oil well drilling control real-time adjustment operations.

[0070] For further information, see Figure 1 - Figure 2 The steps for collecting the real-time operating status image data of the drill pipe equipment are as follows:

[0071] S11, using a camera lens in combination with the local area network of the oil well drilling platform to collect online operating status images of the oil well drilling equipment and generate a real-time operating status image data set of the drilling equipment , ;in Indicates the collected The real-time operating status image data of the drill pipe equipment, Indicates the maximum number of real-time operating status images of drilling equipment.

[0072] Based on the real-time operating status image data of the drilling rod equipment and the working status image data of the drilling rod equipment, the drilling work behavior recognition processing of the drilling rod equipment is performed to generate the oil well drilling work behavior recognition data. When it is not working, the steps S1 and S2 are repeatedly executed until it is working. The operation steps are as follows:

[0073] S21. Establishing a drill pipe equipment working status image data set , ;in Indicates Drill pipe equipment working status image data, Indicates the maximum value of the number of working status images of the drilling rod equipment; the working status image data of the drilling rod equipment indicates the operating status image data of the oil well drilling rod equipment when performing drilling operations;

[0074] S22, using a two-way search algorithm to collect the real-time operating status image data of the drilling equipment Real-time operating status image data of drilling pipe equipment Drilling equipment working status image data collection Image data of working status of drilling pipe equipment Perform image feature matching and generate oil well drilling work behavior recognition data based on the image feature matching results ;

[0075] when and If the image feature matching is successful, it means that the oil well drilling equipment is in working condition, and the oil well drilling work behavior recognition data is output. for work;

[0076] when and If the image features are not matched successfully, it means that the oil well drilling equipment is not in working state, then the oil well drilling work behavior recognition data is output. In this case, steps S11 and S22 are repeated until the oil well drilling work behavior recognition data is For work.

[0077] Through the real-time operating status image acquisition unit of the drill pipe equipment, the real-time operating status image parameters of the drill pipe equipment are accurately obtained online using a shooting lens, providing real data support for autonomous detection of drilling operation behavior; the drill pipe equipment working status image storage unit and the oil well drilling behavior recognition unit cooperate with each other, standardize the storage of the drill pipe equipment working status image parameters, combine the intelligent search algorithm with the real-time operating status image parameters of the drill pipe equipment to intelligently judge the drilling work behavior, realize accurate and efficient recognition of the oil well drilling work behavior, and realize intelligent and reliable control of the oil well well control system.

[0078] For further information, see Figure 1 - Figure 2 When the drill is working, the steps for collecting real-time formation pressure data at the drill bit are as follows:

[0079] S31. Use pressure measurement equipment in conjunction with the local area network of the oil well drilling platform to collect formation pressure parameters at the working position of the drill bit at the end of the drill pipe in the oil well online and generate real-time formation pressure data at the drill bit. ,in The unit is MPa. The pressure measuring equipment includes any one of a formation tester and a pressure gauge.

[0080] Based on the real-time formation pressure data at the drill bit and the drilling fluid density data required for different formation pressures, the numerical analysis and processing of the drilling fluid density required for different formation pressures at the drill bit of the drill pipe in the oil well is performed. The operation steps for generating the target drilling fluid density data are as follows:

[0081] S41. Establish the drilling fluid density data set required for different formation pressures , ;in Indicates The drilling fluid density data required for different formation pressures corresponding to different formation pressures, Indicates the maximum number of formation pressure types; The unit is kilograms per liter. The drilling fluid density data required for different formation pressures represent the drilling fluid concentration data used to balance the formation pressures of different values ​​in the oil well.

[0082] S42, real-time formation pressure data at the drill bit Drilling fluid density data set with different formation pressures Drilling fluid density data required for different formation pressures According to the formation pressure value matching, analyze the real-time formation pressure data at the drill bit The corresponding drilling fluid density data required for different formation pressures , and generate the target drilling fluid density data through data identification , execute to generate target drilling fluid density data The specific steps are as follows:

[0083] S421, initializing parameters and updating the maximum number of iterations T of the algorithm;

[0084] S422, initializing the drilling fluid density search for the position of the seagull population, that is, the drilling fluid density search for the seagull population updates the required drilling fluid density data set at different formation pressures Position in the search space;

[0085] S423. Calculate the drilling fluid density data set required for different formation pressures All drilling fluid density data required for different formation pressures Real-time formation pressure data at the drill bit The fitness value of the formation pressure is kept, and the drilling fluid density data set required at different formation pressures is retained. Real-time formation pressure data at the drill bit in the search space The drilling fluid density data required for different formation pressures with the maximum formation pressure adaptability value The global optimal position of

[0086] S424, Migration, Global Search: Drilling Fluid Density Search The migration behavior of seagulls mainly consists of three steps. The first step is to meet the required drilling fluid density data set at different formation pressures. The search space has different drilling fluid densities to search for conditions to avoid collisions between individual seagulls; the second is to calculate the required drilling fluid density data set at different formation pressures Search space and real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to match the formation pressure The best position direction; third, according to the real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to best match the formation pressure Move the direction of the best position to a new position;

[0087] S4241, calculate the drilling fluid density and search for the required drilling fluid density data set of Seagull at different formation pressures Search for new positions in the space that do not collide with adjacent drilling fluid density search seagulls during movement ; , ;in Represents the drilling fluid density search Seagull required drilling fluid density data set at different formation pressures The current position in the search space, Indicates the current iteration number; Represents the drilling fluid density search Seagull required drilling fluid density data set at different formation pressures Movement behavior in the search space; Indicates control A function of the frequency of change, Indicates the maximum number of iterations;

[0088] S4242, calculate the required drilling fluid density data set at different formation pressures Search space and real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to match the formation pressure The best position direction ; , ,in The data set representing the required drilling fluid density for different formation pressures Search the search space to find the real-time formation pressure data at the drill bit. Drilling fluid density data required for different formation pressures to match the formation pressure The current best position, Search for drilling fluid density for Seagull Drilling Fluid Density Data Set at different formation pressures Current position in the search space; represents a random number that balances global and local search capabilities, Represents a random number in the interval [0,1];

[0089] S4243, based on the real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to best match the formation pressure Move to the new position in the direction of the best position , , that is, the data set of drilling fluid density required at different formation pressures according to the direction of the optimal position Search the search space to find the real-time formation pressure data at the drill bit. Drilling fluid density data required for all different formation pressures to match the formation pressure new location;

[0090] S425, attack prey, local search, drilling fluid density search Seagull required drilling fluid density data set at different formation pressures Real-time formation pressure data at the attack and drill bit in the search space Drilling fluid density data required for different formation pressures to match the formation pressure The prey moves in a spiral motion in the air, while identifying the real-time formation pressure data at the drill bit. Drilling fluid density data required for all different formation pressures to match the formation pressure , drilling fluid density to search for new locations of seagulls after attacking prey , , that is, the drilling fluid density search Seagull required drilling fluid density data set at different formation pressures Search the search space to find the real-time formation pressure data at the drill bit. Drilling fluid density data required for different formation pressures to match the formation pressure prey;

[0091] S426: Determine whether the maximum number of iterations is met, and then output the real-time formation pressure data at the drill bit. Drilling fluid density data required for different formation pressures to match the formation pressure ; If not satisfied, return to step S423;

[0092] S427: Output of step S426 and real-time formation pressure data at the drill bit Drilling fluid density data required for different formation pressures to match the formation pressure Generate target drilling fluid density data after data identification ,in The unit is kilograms per liter.

[0093] The steps for collecting real-time formation condition characteristic text data at the drill bit are as follows:

[0094] S51, using the drilling pressure torque measurement sub in combination with the local area network of the oil well drilling platform to collect the formation geological characteristic information at the working position of the drill bit at the end of the drill pipe in the oil well online, and generate real-time formation working condition characteristic text data at the drill bit. ,The real time formation condition characteristic text data at the drill bit include the formation rock composition structure, formation rock type and formation rock hardness.

[0095] According to the target drilling fluid density at the drill bit of the oil well, the formation condition information and the drilling fluid type data corresponding to different drilling fluid densities and formation conditions, the drilling fluid type required for different formation pressures at the drill bit of the oil well is identified and processed, and the operation steps for generating the target drilling fluid object data are as follows:

[0096] S61. Establish a data set of drilling fluid types corresponding to different drilling fluid densities and formation conditions , ;in Indicates the matching of different drilling fluid density and formation conditions. Drilling fluid type data corresponding to different drilling fluid densities and formation conditions, Indicates the maximum number of drilling fluid types, including water, mud, clay-free flushing fluid, emulsion and foam;

[0097] S62, using iterative deepening search algorithm to target drilling fluid density data , Real-time formation condition characteristics text data at the drill bit Drilling fluid type data set corresponding to different drilling fluid densities and formation conditions Drilling fluid type data corresponding to different drilling fluid densities and formation conditions According to the matching of drilling fluid density and formation condition characters, search for the target drilling fluid density data , Real-time formation condition characteristics text data at the drill bit Matching drilling fluid density, formation conditions and corresponding drilling fluid type data , and generate the target drilling fluid object data through data identification .

[0098] The real-time formation pressure acquisition unit at the drill bit and the target drilling fluid density analysis unit cooperate with each other, and the pressure measurement equipment is used to dynamically feedback the formation pressure parameters at the drill bit, combined with the intelligent recognition algorithm and the scientifically preset drilling fluid density parameters required for different formation pressures to perform intelligent analysis of the drilling fluid density required for balancing the formation pressure at the drill pipe and drill bit position in the oil well, so as to achieve efficient and accurate identification of the target drilling fluid density for balancing the formation pressure during the oil well drilling operation; the real-time formation working condition information acquisition unit at the drill bit and the target drilling fluid object identification unit cooperate with each other, and the drilling pressure torque measurement pup section while drilling is used to online collect the real-time formation working condition information at the drill bit, combined with the target drilling fluid density parameters, intelligent search algorithm and scientific storage of different drilling fluid densities and formation working conditions. The corresponding drilling fluid types are used to perform accurate and efficient analysis of the drilling fluid type objects required for balancing the formation pressure at the drill pipe and drill bit position in the oil well, so as to achieve scientific and efficient evaluation of the drilling fluid objects required during the oil well drilling process, and improve the drilling fluid parameter control precision and accuracy of the oil well control system.

[0099] For further information, see Figure 1 - Figure 2 The operation steps for constructing the oil well control drilling fluid characteristic data and feeding back to perform the oil well drilling control real-time adjustment operation are as follows:

[0100] S71. Target drilling fluid density data , Target drilling fluid object data Generate oil well control drilling fluid characteristic data through data combination and transmit the oil well control drilling fluid characteristic data through the drilling platform local area network Online transmission to the drilling management platform;

[0101] S72, drilling management platform based on oil well well control drilling fluid characteristic data The concentration and type parameters of the drilling fluid are transported to the working position of the drill pipe and drill bit in the oil well through the drilling fluid purification equipment to perform real-time adjustment operations of oil well drilling control.

[0102] Through the oil well control drilling fluid characteristic information generation feedback unit, the oil well control drilling fluid information is scientifically constructed based on the target drilling fluid density and type parameters and fed back to the drilling management platform, so as to realize the real-time and reliable collection and feedback of the drilling fluid information required for oil well drilling; the oil well drilling control operation real-time adjustment unit, the drilling management platform efficiently and scientifically performs the oil well drilling control real-time adjustment operation based on the oil well control drilling fluid information combined with the drilling fluid purification equipment, so as to improve the accuracy and applicability of the well control operation of the oil well well control system.

[0103] Example 2

[0104] See also Figure 1 - Figure 2, an off-grid oil well intelligent control system, used to implement an off-grid oil well intelligent control method, the system includes an oil well drilling behavior self-checking module, an oil well drilling fluid control parameter analysis module, and an oil well drilling control execution module;

[0105] The oil well drilling behavior self-checking module includes a drill pipe equipment real-time operation status image acquisition unit, a drill pipe equipment working status image storage unit, and an oil well drilling behavior recognition unit;

[0106] A drilling rod equipment real-time operation status image acquisition unit, which acquires the real-time operation status image data of the drilling rod equipment through a shooting lens; a drilling rod equipment working status image storage unit, which is used to store the drilling rod equipment working status image data; an oil well drilling behavior recognition unit, which performs drilling work behavior recognition processing of the drilling rod equipment based on the drilling rod equipment real-time operation status image data and the drilling rod equipment working status image data, and generates oil well drilling work behavior recognition data;

[0107] The oil well drilling fluid control parameter analysis module includes a real-time formation pressure acquisition unit at the drill bit, a drilling fluid density storage unit required for different formation pressures, a target drilling fluid density analysis unit, a real-time formation condition information acquisition unit at the drill bit, a drilling fluid type storage unit corresponding to different drilling fluid densities and formation conditions, and a target drilling fluid object recognition unit;

[0108] The real-time formation pressure acquisition unit at the drill bit collects the real-time formation pressure data at the drill bit through the pressure measuring equipment; the drilling fluid density storage unit required for different formation pressures is used to store the drilling fluid density data required for different formation pressures; the target drilling fluid density analysis unit performs numerical analysis and processing on the drilling fluid density required for different formation pressures at the drill bit in the oil well based on the real-time formation pressure data at the drill bit and the drilling fluid density data required for different formation pressures, and generates the target drilling fluid density data; the real-time formation working condition information acquisition unit at the drill bit collects the real-time formation pressure data at the drill bit through the The drilling pressure torque measurement sub collects the text data of the real-time formation working condition characteristics at the drill bit; the storage unit for drilling fluid types corresponding to different drilling fluid densities and formation working conditions is used to store the data of drilling fluid types corresponding to different drilling fluid densities and formation working conditions; the target drilling fluid object recognition unit recognizes the drilling fluid types required for different formation pressures at the drill bit of the drill pipe in the oil well according to the target drilling fluid density and formation working condition information at the drill pipe in the oil well and the data of drilling fluid types corresponding to different drilling fluid densities and formation working conditions, and generates the target drilling fluid object data;

[0109] The oil well drilling control execution module includes an oil well control drilling fluid characteristic information generation feedback unit and an oil well drilling control operation real-time adjustment unit;

[0110] The oil well well control drilling fluid characteristic information generation feedback unit is used to construct the oil well well control drilling fluid characteristic data and feed it back to the drilling management platform; the oil well drilling control operation real-time adjustment unit, the drilling management platform performs the oil well drilling control real-time adjustment operation based on the oil well well control drilling fluid characteristic data combined with the drilling fluid purification equipment.

[0111] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An off-grid oil well intelligent control method, characterized in that: The method comprises the following steps: S1. Collecting real-time operating status image data of drilling equipment; S2, performing drilling work behavior recognition processing of the drilling rod equipment based on the real-time operation status image data of the drilling rod equipment and the working status image data of the drilling rod equipment to generate oil well drilling work behavior recognition data, and when it is not working, repeating steps S1 and S2 until it is working; S3, when working, collect real-time formation pressure data at the drill bit; S4, performing numerical analysis and processing of the drilling fluid density required for different formation pressures at the drill bit of the drill pipe in the oil well according to the real-time formation pressure data at the drill bit and the drilling fluid density data required for different formation pressures, and generating target drilling fluid density data; S5, collecting real-time formation working condition characteristic text data at the drill bit; S6, performing identification processing of the drilling fluid type required for different formation pressures at the drill bit of the drill pipe in the oil well according to the target drilling fluid density at the drill bit of the drill pipe in the oil well, the formation condition information and the drilling fluid type data corresponding to different drilling fluid densities and formation conditions, and generating target drilling fluid object data; S7. Construct oil well well control drilling fluid characteristic data and provide feedback to execute oil well drilling control real-time adjustment operations.

2. The off-grid oil well intelligent control method according to claim 1, characterized in that: The S1 comprises the following steps: S11, using a camera lens in combination with the local area network of the oil well drilling platform to collect online operating status images of the oil well drilling equipment and generate a real-time operating status image data set of the drilling equipment , ;in Indicates the collected The real-time operating status image data of the drill pipe equipment, Indicates the maximum number of real-time operating status images of drilling equipment.

3. The off-grid oil well intelligent control method according to claim 2, characterized in that: The S2 comprises the following steps: S21. Establishing a drill pipe equipment working status image data set , ;in Indicates Drill pipe equipment working status image data, Indicates the maximum number of images of the working status of the drilling equipment; S22, using a bidirectional search algorithm to As stated in With the As stated in Perform image feature matching and generate oil well drilling work behavior recognition data based on the image feature matching results ; when and If the image feature matching is successful, the oil well drilling work behavior recognition data is output for work; when and If the image features are not matched successfully, the oil well drilling work behavior recognition data is output. In this case, steps S11 and S22 are repeated until the oil well drilling work behavior identification data is For work.

4. The off-grid oil well intelligent control method according to claim 3 is characterized in that: The S3 comprises the following steps: S31. Use pressure measurement equipment in conjunction with the local area network of the oil well drilling platform to collect formation pressure parameters at the working position of the drill bit at the end of the drill pipe in the oil well online and generate real-time formation pressure data at the drill bit. ,in The unit is MPa.

5. The off-grid oil well intelligent control method according to claim 4, characterized in that: The S4 comprises the following steps: S41. Establish the drilling fluid density data set required for different formation pressures , ;in Indicates The drilling fluid density data required for different formation pressures corresponding to different formation pressures, Indicates the maximum number of formation pressure types; The unit is kilograms per liter; S42, the With the As stated in According to the formation pressure value matching, the above The corresponding , and generate the target drilling fluid density data through data identification , execute to generate the target drilling fluid density data The specific steps are as follows: S421, initializing parameters and updating the maximum number of iterations T of the algorithm; S422, initializing the drilling fluid density search for the position of the seagull population, that is, the drilling fluid density search for the seagull population is updated in the Position in the search space; S423, calculating the All of the above With the The fitness value of the formation pressure in The search space is The maximum formation pressure fitness value is The global optimal position of S424, Migration, Global Search: Drilling Fluid Density Search The migration behavior of seagulls mainly consists of three steps. The first step is to meet the requirements in the The search space has different drilling fluid densities to search for the conditions for avoiding collisions between seagull individuals; the second is to calculate the The search space is similar to the The formation pressure matches the The best position direction; the third is based on the The best match of formation pressure Move the direction of the best position to a new position; S4241, calculate the drilling fluid density to search for seagulls in the Search for new positions in the space that do not collide with adjacent drilling fluid density search seagulls during movement ; S4242, calculated in the The search space is similar to the The formation pressure matches the The best position direction ; S4243, according to the The best match of formation pressure Move to the new position in the direction of the best position ; S425, attack prey, local search, drilling fluid density search seagulls in the The attack in the search space is similar to the The formation pressure matches the Prey in the air in a spiral motion, while identifying the The formation pressure matches all of the , drilling fluid density to search for new locations of seagulls after attacking prey ; S426, determine whether the maximum number of iterations is met, and then output the The formation pressure matches the ; If not satisfied, return to step S423; S427, output the step S426 and The formation pressure matches the Generate target drilling fluid density data after data identification ,in The unit is kilograms per liter.

6. The off-grid oil well intelligent control method according to claim 5, characterized in that: The S5 comprises the following steps: S51, using the drilling pressure torque measurement sub in combination with the local area network of the oil well drilling platform to collect the formation geological characteristic information at the working position of the drill bit at the end of the drill pipe in the oil well online, and generate real-time formation working condition characteristic text data at the drill bit. .

7. The off-grid oil well intelligent control method according to claim 6, characterized in that: The S6 comprises the following steps: S61. Establish a data set of drilling fluid types corresponding to different drilling fluid densities and formation conditions , ;in Indicates the matching of different drilling fluid density and formation conditions. Drilling fluid type data corresponding to different drilling fluid densities and formation conditions, Indicates the maximum number of drilling fluid types; S62, using an iterative deepening search algorithm to , With the As stated in According to the matching of drilling fluid density and formation condition characters, search for the wells that match the above , Matching the , and generate the target drilling fluid object data through data identification .

8. The off-grid oil well intelligent control method according to claim 7, characterized in that: The S7 comprises the following steps: S71, the , Generate oil well control drilling fluid characteristic data through data combination and transmit the above information through the local area network of the drilling platform Online transmission to the drilling management platform; S72, drilling management platform according to the The concentration and type parameters of the drilling fluid are transported to the working position of the drill pipe and drill bit in the oil well through the drilling fluid purification equipment to perform real-time adjustment operations of oil well drilling control.

9. An off-grid oil well intelligent control system, used to implement an off-grid oil well intelligent control method according to any one of claims 1 to 8, characterized in that: The system comprises an oil well drilling behavior self-checking module, an oil well drilling fluid control parameter analyzing module and an oil well drilling control executing module.

Images