Comprehensive quantitative evaluation method and system for petroleum drilling machine

Abstract

The invention discloses a comprehensive quantitative evaluation method and system for a petroleum drilling machine, and the method comprises the steps: collecting and preprocessing the basic information of the petroleum drilling machine, and obtaining the operation and structure state data of the petroleum drilling machine; the driving type of the petroleum drilling machine is recognized, and a quantitative evaluation standard corresponding to the driving type is selected; based on the selected quantitative evaluation standard, performing item-by-item quantitative scoring on each evaluation dimension of each key system and component of the petroleum drilling machine; performing multi-level weighted summary on the quantitative score of each sub-item to obtain a total score of the petroleum drilling machine; and performing comprehensive grade evaluation on the petroleum drilling machine according to the total score of the petroleum drilling machine, and generating a corresponding evaluation report and a maintenance suggestion. According to the invention, the problems of fragmentation and localization existing in the existing petroleum drilling machine evaluation technology are solved, and the problem that effective spanning from single index detection to systematic comprehensive evaluation cannot be realized is solved.

Description

Technical Field

[0001] This invention relates to the field of petroleum equipment evaluation technology, specifically to a comprehensive quantitative evaluation method and system for petroleum drilling rigs. Background Technology

[0002] An oil drilling rig is a large mechanical device used for oil and gas drilling operations. It drives drill strings to break through rock formations and drill a wellbore, providing a passage for subsequent extraction. Its core functions include tripping drill strings, rotary drilling, and well flushing. It mainly consists of a power unit, transmission unit, working machine, and auxiliary equipment.

[0003] Referring to patent publication number "CN111667198A", a remote online monitoring and predictive maintenance system and evaluation method for oil drilling rigs are disclosed. The single-parameter monitoring and analysis includes: judging whether the set upper and lower limits are exceeded through real-time monitoring data and giving alarm signals; when the limit is repeatedly exceeded and alarms are triggered repeatedly within a unit time period, the system will push the alarm to the big data analysis platform; when an occasional alarm occurs within a unit time period and no alarm occurs in subsequent time periods, it is determined to be a false alarm, and no message is pushed, but a prompt is given to provide reference for the background big data analysis system; when the parameters are all normal within a unit time period, the system does not push a message and continues monitoring.

[0004] As mentioned above, oil drilling rigs are complex systems with numerous unit components, diverse equipment types, and interconnected functions. Existing methods mainly involve a series of technical means such as structural component load-bearing capacity testing, NDT, functional testing, inspection and evaluation, fault diagnosis, and reliability analysis. The inspection objects of drilling equipment are often localized, and the objectives are often singular, resulting in "inspection without evaluation." This leads to the fragmentation and localization of oil drilling rig evaluation technology, as well as the failure to effectively transition from single-indicator testing to systematic comprehensive evaluation. Summary of the Invention

[0005] In view of the above-mentioned shortcomings in the prior art, the comprehensive quantitative evaluation method and system for oil drilling rigs provided by the present invention solves the problems of fragmentation and localization in the existing oil drilling rig evaluation technology, as well as the failure to effectively transition from single indicator detection to systematic comprehensive evaluation.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: A comprehensive quantitative evaluation method for oil drilling rigs is provided, which includes the following steps: Collect and preprocess basic information of the oil drilling rig to obtain data on the operation and structural status of the oil drilling rig; Identify the drive type of the oil drilling rig and select the corresponding quantitative evaluation standard; Based on the selected quantitative evaluation criteria, the evaluation dimensions of each key system and component of the oil drilling rig are quantitatively scored item by item. The quantitative scores of each item are weighted and summarized at multiple levels to obtain the total score of the oil drilling rig. The oil drilling rig is comprehensively rated based on its overall score, and a corresponding evaluation report and maintenance recommendations are generated.

[0007] Furthermore, the basic information of the oil drilling rig includes structural load-bearing capacity test data of the key load-bearing structural components of the oil drilling rig, non-destructive testing data of key stress-bearing components, important pipelines and containers of the oil drilling rig, on-site assessment and inspection data of all core systems and auxiliary facilities of the oil drilling rig, and historical operating data of the oil drilling rig.

[0008] Furthermore, the key load-bearing structural components of an oil drilling rig include the derrick and the base; the methods for obtaining structural load-bearing capacity test data for these key load-bearing structural components include: Resistance strain gauges were attached to the main columns, diagonal braces, horizontal braces, base beams, decking, and connecting lugs of the derrick, and displacement and force sensors were installed at preset monitoring points. Real-time physical quantities under simulated loads were acquired using the resistance strain gauges, displacement sensors, and force sensors and imported into stress analysis software. The collected strain and displacement data were then analyzed inversely using the finite element method and compared with the theoretical stress distribution, allowable stress limits, and load-bearing capacity evaluation indicators specified in the oil drilling rig design drawings to obtain the load-bearing capacity test data of the derrick and base.

[0009] Furthermore, key load-bearing components of an oil drilling rig include the derrick and base, hoisting system, rotary system, drilling fluid circulation system, well control system, and wellhead tools; non-destructive testing methods include ultrasonic testing, magnetic particle testing, eddy current testing, and radiographic testing; among which: Ultrasonic testing is used to detect volumetric and surface defects in welds, shaft components, and thick-walled structural parts. By analyzing the propagation time, amplitude, and waveform changes of the echo signal, internal discontinuities are identified, thereby obtaining information on the location, depth, size, and shape of the defects. Magnetic particle testing is used to detect surface and near-surface cracks, folds, and inclusions in ferromagnetic material components. It involves applying a magnetic field to the component under test and spraying magnetic powder onto its surface, then observing the magnetic trace aggregation phenomenon to determine the presence of defects. Eddy current testing is used to detect surface and near-surface defects in conductive material components. It identifies defects by sensing disturbances in the eddy current field. Radiographic testing is used to detect internal defects in castings, welds, and thick-walled containers, including shrinkage cavities, porosity, slag inclusions, and cracks.

[0010] Furthermore, all core systems and auxiliary facilities of an oil drilling rig include the derrick, base, hoisting and rotation system, drilling fluid circulation system, power and transmission system, and power and electrical system; On-site assessment and inspection data includes observation and recording of equipment appearance, function, wear level, corrosion status, connection tightness, lubrication, sealing performance, safety protection devices, instrument indication accuracy, and ease of operation; among which: The on-site assessment and inspection data of the derrick includes whether there is visible deformation, fatigue cracks, corrosion damage, or cracks and leaks in the columns, diagonal braces, and horizontal braces; The on-site assessment and inspection data for the base includes geometric dimension measurement data of the base steel structure, beams, decking, and fasteners; wear measurement and loosening inspection data of connecting pins and bolts; integrity data of cotter pins and lock nuts; and integrity and reliability data of fall arrest devices, safety ladders, platform railings, lighting systems, guy ropes, and ground anchors. The on-site assessment and inspection data for the hoisting and rotating systems include the working condition and wear degree of the winch drum, braking system, transmission gears, bearings, clutch, and brakes; wear, broken wires, corrosion, deformation, pitting, and lubrication condition of the hoisting system wire ropes, as well as the model, specifications, production batch, service life, and last replacement date of the hoisting system wire ropes; wear, clearance, lubrication, and operational stability of the traveling block, hook, swivel, and turntable; wear and functional normality of the motor, gearbox, cooling system, manifold, boom cylinder, and guide rail slider of the top drive system; and hydraulic system pressure loss data for the boom cylinder. The on-site assessment and inspection data of the drilling fluid circulation system includes the wear, sealing, pressure stability, and working efficiency of the drilling pump; the integrity of the screens of the solids control equipment, the condition of the nozzles, the wear of the hydrocyclones, the bearings, the working condition of the motors, and the separation effect; the integrity, corrosion resistance, sealing performance, and operational flexibility of the mud tanks, mud agitators, mud manifolds, and valves; and the functional integrity of the replenishment system, chemical dosing system, and testing equipment. The on-site assessment and inspection data of the power and transmission system include the diesel engine's operating stability, fuel consumption, oil leakage and starting performance; the wear, looseness and lubrication of the gearbox, transfer case, coupling, universal joint, drive shaft, chain and belt; and the working performance and sealing of the hydraulic torque converter and hydraulic coupling. The on-site assessment and inspection data of the power and electrical systems include the operating performance of the main generator set and auxiliary generator set, the stability of the generator voltage and current, fuel consumption data, the integrity and normal function of the distribution cabinet, cables, transformers, motors, DC speed control system, AC frequency conversion system, PLC control system, HMI human-machine interface and various sensors and actuators, the integrity and functional reliability of the well control system, the sealing performance of the blowout preventer, the charging pressure and depressurization rate of the accumulator group, the integrity and leakage of the control pipeline, and the wear, corrosion, deformation and integrity of the connecting threads of the wellhead tools and drill strings.

[0011] Furthermore, the key systems of an oil drilling rig include: Derrick and base system, hoisting system, rotary system, drilling fluid circulation system, power and transmission system, power and electrical system and other auxiliary systems; The evaluation dimensions include: The structural load-bearing capacity dimension is scored based on the structural load-bearing capacity test data of the key load-bearing structural components of the oil drilling rig. The material integrity dimension is based on non-destructive testing data of key load-bearing components, important pipelines, and containers of oil drilling rigs, which scores the type, location, size, quantity, and severity of defects. In terms of functional operation status, based on on-site assessment and inspection data and historical operation data of all core systems and auxiliary facilities of the oil drilling rig, the wear degree, sealing performance, lubrication condition, operational stability and efficiency of the components are quantitatively scored. The level of technological advancement is assessed based on the comparison of technical parameters and expert scoring, evaluating the technical level, automation level, energy-saving effect, and whether the latest technical standards are adopted for components or systems. The service life dimension is scored by combining the component's cumulative operating time, design life, wear pattern and historical failure rate; The system coordination dimension is used to evaluate the compatibility between different components or systems, interface compatibility, and the impact on overall efficiency and reliability. The scoring for each dimension is based on preset quantitative standards and deduction rules, and is objectively judged through on-site data and historical data, and presented in a 100-point scale.

[0012] Furthermore, in the process of summarizing the quantitative scores of each sub-item through multi-level weighting, the weight allocation method is as follows: Derrick and base system: The structural load-bearing capacity and material integrity dimensions account for 30% of the total weight; the functional operation status, technological advancement, service life, and system compatibility dimensions account for a total weight of 10%. Enhancement System: The structural load-bearing capacity and material integrity dimensions account for 25% of the total weight, while the functional operation status, technological advancement, service life, and system coordination dimensions account for 10% of the total weight. Rotating systems: The structural load-bearing capacity and material integrity dimensions each have a weight of 15%, while the functional operation status, technological advancement, service life, and system compatibility dimensions each have a total weight of 5%. Drilling fluid circulation system: The dimensions of material integrity and functional operation status account for 20% of the total weight, while the dimensions of technological advancement, service life, and system compatibility account for 5% of the total weight. Power and transmission system: The dimensions of functional operation status, technological advancement, and system compatibility have a weight of 25%, while the dimensions of material integrity and service life have a combined weight of 10%. Power and electrical systems: The dimensions of functional operation status, technological advancement, and system coordination are weighted at 25%, while the dimensions of material integrity and service life are weighted at a total of 10%. Well control system: The structural bearing capacity and material integrity dimensions account for 40% of the weight, while the functional operation status, technological advancement, service life, and system compatibility dimensions account for 10% of the total weight. Other auxiliary systems: The total weight of each dimension is 5%.

[0013] Furthermore, the specific method for multi-level weighted summation of the quantitative scores for each sub-item is as follows: The comprehensive score of a secondary component is obtained by weighting the scores of each of the six dimensions in the sub-scores of each secondary component according to the weights of each dimension within that secondary component. The overall score of each secondary component is weighted and averaged according to its weight within the primary system to obtain the overall score of the primary system. The overall score of the oil drilling rig is obtained by weighting and summing the comprehensive scores of all primary systems according to their respective weights at the primary system level. The expression for this score is as follows:

[0014] in The overall score for the oil drilling rig; The number of first-level systems; For the first i The weights of each primary system; For the first i The number of secondary components under a primary system; For the first j The secondary component is in i Weights under a primary system; For the first k The evaluation dimension is in the firstj Weights under each secondary component; For the first i The first level system j The secondary component is in k The scoring is based on several dimensions; the primary system consists of the key systems of the oil drilling rig, and each primary system includes several secondary components. The power system consists of the power and transmission system and / or the power and electrical system.

[0015] Furthermore, the specific methods for comprehensively evaluating oil drilling rigs based on their overall scores and generating corresponding evaluation reports and maintenance recommendations include: When the total score of the oil drilling rig is above 90 points, the grade is A, and it is recommended to maintain the existing maintenance strategy. When the total score of the oil drilling rig is between 80 and 89 points, the grade is B. It is recommended to strengthen routine inspections and carry out preventive maintenance for potential problems identified. When the total score of the oil drilling rig is 70-79 points, the grade is C. It is recommended to conduct regular inspections and planned maintenance for the problems pointed out in the report, and consider component replacement or upgrades. When the total score of an oil drilling rig is between 60 and 69 points, the grade is D. It is recommended to immediately repair the key defects, develop a maintenance plan, and strictly monitor the operating status of the drilling rig. When the total score of an oil drilling rig is below 60 points, it is recommended to immediately shut down the rig for a complete overhaul, replace major components, or consider scrapping it.

[0016] A system based on a comprehensive quantitative evaluation method for oil drilling rigs is provided, comprising: The data acquisition module is used to collect and preprocess basic information of the oil drilling rig to obtain the operation and structural status data of the oil drilling rig. The quantitative evaluation standard selection module is used to identify the drive type of the oil drilling rig and select the quantitative evaluation standard corresponding to that drive type. The sub-item quantitative scoring module is used to perform sub-item quantitative scoring on various evaluation dimensions of key systems and components of oil drilling rigs based on the selected quantitative evaluation criteria. The weighted summary module is used to perform multi-level weighted summaries of the quantitative scores of each item to obtain the total score of the oil drilling rig. The rating module is used to comprehensively rate the oil drilling rig based on its total score and generate corresponding evaluation reports and maintenance recommendations.

[0017] The beneficial effects of this invention are as follows: 1. This invention provides a comprehensive quantitative evaluation of oil drilling rigs from the dimensions of structural load-bearing capacity, non-destructive testing, assessment and inspection, technical level, equipment age and equipment matching. It solves the problems of fragmentation and localization in existing oil drilling rig evaluation technologies, as well as the failure to effectively transition from single-index detection to systematic comprehensive evaluation.

[0018] 2. This invention will automatically generate a detailed evaluation report and maintenance recommendations. The report will not only include the drilling rig's overall grade and total score, but more importantly, it will list in detail all defects, problems and their respective systems and components found during the basic information collection and sub-item quantitative scoring process, and provide a quantitative description of the severity of each problem.

[0019] 3. For components with degraded performance, the report will provide specific performance data and deviations from design values, and propose specific maintenance, repair, replacement, or upgrade recommendations, including recommended repair methods, spare parts models, estimated lead times, and cost estimates.

[0020] 4. The report of this invention will also make a predictive assessment of the future operational risks of the drilling rig, and provide suggestions for medium- and long-term upgrades and renovations based on the service life and technological advancement, thereby providing the drilling rig management department with a comprehensive, scientific and operable basis for decision-making. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating the method. Figure 2 This is a schematic diagram of the model for classifying oil drilling rigs according to the present invention. Detailed Implementation

[0022] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0023] like Figure 1 As shown, the comprehensive quantitative evaluation method for oil drilling rigs includes the following steps: S1. Collect and preprocess the basic information of the oil drilling rig to obtain the operation and structural status data of the oil drilling rig; S2. Identify the drive type of the oil drilling rig and select the quantitative evaluation standard corresponding to that drive type; S3. Based on the selected quantitative evaluation criteria, the evaluation dimensions of each key system and component of the oil drilling rig are quantitatively scored item by item. S4. The quantitative scores of each item are weighted and summarized at multiple levels to obtain the total score of the oil drilling rig. S5. Based on the overall score of the oil drilling rig, conduct a comprehensive rating of the oil drilling rig and generate a corresponding evaluation report and maintenance recommendations.

[0024] Correspondingly, systems based on the comprehensive quantitative evaluation method for oil drilling rigs include: The data acquisition module is used to collect and preprocess basic information of the oil drilling rig to obtain the operation and structural status data of the oil drilling rig. The quantitative evaluation standard selection module is used to identify the drive type of the oil drilling rig and select the quantitative evaluation standard corresponding to that drive type. The sub-item quantitative scoring module is used to perform sub-item quantitative scoring on various evaluation dimensions of key systems and components of oil drilling rigs based on the selected quantitative evaluation criteria. The weighted summary module is used to perform multi-level weighted summaries of the quantitative scores of each item to obtain the total score of the oil drilling rig. The rating module is used to comprehensively rate the oil drilling rig based on its total score and generate corresponding evaluation reports and maintenance recommendations.

[0025] In some embodiments, collecting and preprocessing basic information about the oil drilling rig is the cornerstone of subsequent quantitative evaluation. It aims to comprehensively and systematically obtain various operational and structural status data of the oil drilling rig. Specifically, the basic information includes multiple aspects such as structural bearing capacity test data of key load-bearing structural components of the oil drilling rig, non-destructive testing data of key stress-bearing components, important pipelines and containers of the oil drilling rig, on-site assessment and inspection data of all core systems and auxiliary facilities of the oil drilling rig, historical operating data of the oil drilling rig, and review of technical documents and regulations.

[0026] First, structural load-bearing capacity testing data was collected for key load-bearing structures of the oil drilling rig, such as the derrick and base. This testing was strictly conducted in accordance with the national standard SY 6326, "Testing and Evaluation Methods and Classification Specifications for Load-Bearing Capacity of Derricks and Bases of Oil Drilling Rigs and Workover Rigs." During the testing process, high-precision resistance strain gauges were attached to key stress areas such as the main columns, diagonal braces, horizontal braces, base beams, decking, and connecting lugs, and displacement and force sensors were installed at preset monitoring points. Under simulated maximum load conditions, wire-type or laser displacement sensors with an accuracy of ±0.05mm were used to monitor structural deformation in real time. Force sensors were used to accurately monitor the applied load, ensuring the accuracy of the test conditions. All real-time physical quantities collected under simulated loads were converted into digital signals and recorded by a high-speed data acquisition system. Subsequently, these data were imported into professional stress analysis software (such as ANSYS or ABAQUS) for post-processing and analysis. The collected strain and displacement data were analyzed using the finite element method, and compared with the theoretical stress distribution, allowable stress limits, and bearing capacity evaluation indicators specified in the drilling rig design drawings and the SY 6326 standard. Finally, based on the analysis results, the bearing capacity of the structural components was quantitatively evaluated.

[0027] Secondly, non-destructive testing (NDT) data was collected for key load-bearing components, important pipelines, and containers, including the derrick and base, hoisting system, rotary system, drilling fluid circulation system, well control system, and wellhead tools. The NDT methods employed encompassed a variety of advanced technologies, such as ultrasonic testing, magnetic particle testing, eddy current testing, and radiographic testing. In ultrasonic testing, the focus was on detecting volumetric and surface defects such as cracks, inclusions, and porosity within welds, shaft components, and thick-walled structural parts. Straight and angle probes with frequencies ranging from 2.5MHz to 5MHz were used, along with a portable digital ultrasonic flaw detector (such as the GE USM 36), employing the pulse-echo method to scan the tested components. Ultrasonic pulses emitted by a flaw detector are reflected when they encounter internal defects. By analyzing the propagation time, amplitude, and waveform changes of the echo signal, the location, depth, size, and shape of the defect can be accurately identified. Subsequently, fluorescent magnetic powder or a suspension of colored magnetic powder is sprayed onto the surface of the component. If surface or near-surface defects exist, magnetic lines of force will generate a leakage magnetic field at the defect location, attracting magnetic powder to accumulate and form visible magnetic traces, thereby determining the presence, location, shape, and approximate size of the defect. Eddy current testing is suitable for detecting surface and near-surface defects in conductive material components, especially sensitive to fatigue cracks and corrosion thinning. This method identifies defects by inducing disturbances in the eddy current field. When an alternating current is passed through the coil in the probe, eddy currents are generated in the test component. If a defect exists in the test component, it will change the local conductivity or permeability, thereby disturbing the distribution of the eddy current field and causing a change in the impedance of the probe coil. By measuring and analyzing this impedance change, the defect can be detected and located. Radiographic testing, including X-ray or gamma-ray testing, is used to detect internal defects in castings, welds, thick-walled containers, such as shrinkage cavities, porosity, inclusions, and cracks. X-rays emitted from an X-ray machine or gamma-ray source (such as Iridium-192) penetrate the object and are imaged on film or a digital detector placed on the other side. Defects absorb radiation differently than normal materials, creating contrast differences in the image and revealing their presence. The collected non-destructive testing data are analyzed by qualified professionals using specialized equipment to generate detailed defect reports. These reports include the defect type, precise location, geometric dimensions (such as length, depth, and width), quantity, and the severity level determined according to relevant standards (such as API RP 8B and ASME Section V).

[0028] Secondly, a comprehensive and detailed on-site assessment and inspection of all core systems and auxiliary facilities of the oil drilling rig was conducted. This assessment and inspection involved detailed observation and recording of multiple dimensions, including equipment appearance, function, wear and tear, corrosion status, connection tightness, lubrication, sealing performance, safety protection devices, instrument accuracy, and ease of operation.

[0029] For the derrick and base, inspect the main structural components such as columns, diagonal braces, and horizontal braces for visible deformation, fatigue cracks, corrosion damage, or cracks and leaks at welded joints. Use visual inspection combined with crack indicator tests (such as penetrant testing) to conduct in-depth analysis of suspicious areas. Measure the geometric dimensions of the base steel structure, beams, decking, and fasteners to ensure their integrity and load-bearing capacity meet design requirements. Perform wear measurements and loosening checks on connecting pins and bolts, and confirm the integrity of anti-loosening devices such as cotter pins and lock nuts. In addition, focus on checking the integrity and reliability of safety accessories such as fall arrestors, safety ladders, platform railings, lighting systems, guy ropes, and ground anchors.

[0030] For the hoisting and rotating systems, the working condition and wear of the winch drum, braking system (including band brakes and disc brakes), transmission gears, bearings, clutches, and brakes must be inspected. Specifically, this includes measuring the thickness of brake shoes or discs and comparing them to wear limits; inspecting gear tooth surface wear, pitting, and cracking; checking if the radial and axial clearances of the bearings are within the specified range; and testing the smoothness and reliability of clutch engagement and disengagement. The hoisting system wire ropes should be inspected for wear, broken wires, rust, deformation, pitting, and lubrication. Their model, specifications, production batch, service life, and last replacement date should be recorded, and their scrap level should be assessed according to API RP9B standards. The traveling trolley, hook, swivel, and turntable (including turntable bearings, gears, and brakes) should be inspected for wear, clearance, lubrication, and operational smoothness. The top drive system's motor, gearbox, cooling system, manifold, boom cylinder, and guide rail slider should be inspected for wear and functional normality. The hydraulic system pressure loss of the boom cylinder should be recorded.

[0031] For the drilling fluid circulation system, inspect the drilling pump (including pump body, piston, valve box, cylinder liner, and piston rod) for wear, sealing, pressure stability, and operating efficiency. Inspect the solids control equipment (vibrating screen, desander, desilter, centrifuge) for screen integrity, nozzle clogging, hydrocyclone wear, bearing condition, and motor operation and separation efficiency. Inspect the mud tank, mud mixer, mud manifold, and valves for integrity, corrosion resistance, sealing performance, and operational flexibility. Also inspect the replenishment system, chemical dosing system, and laboratory equipment for functionality.

[0032] For the power and transmission system (applicable to mechanical and hybrid drive oil drilling rigs), check the diesel engine (including engine block, crankshaft, connecting rod, piston, valve, fuel system, lubrication system, cooling system, and exhaust system) for operational stability, fuel consumption, oil leaks, and starting performance. Check the wear, looseness, and lubrication of the gearbox, transfer case, coupling, universal joint, drive shaft, chain, and belt. Check the working performance and sealing of the hydraulic torque converter and hydraulic coupling.

[0033] For the power and electrical systems (applicable to electric oil drilling rigs), check the operating performance, voltage and current stability, and fuel consumption of the main and auxiliary generator sets. Also check the integrity and functionality of the distribution cabinets, cables, transformers, motors, DC speed control systems, AC frequency converters, PLC control systems, HMI (human-machine interface), and various sensors and actuators. Specifically, perform thermal imaging detection on the distribution cabinets to identify hot spots; check for damage or aging of cable insulation; test the insulation resistance and turns ratio of the transformers; monitor the current, voltage, speed, and vibration of the motors to assess their operating efficiency and health status; perform functional tests on the speed control and frequency converter systems to verify their control accuracy and response speed; check the integrity and logical correctness of the PLC control program; and evaluate the accuracy of the information displayed on the HMI interface and the smoothness of human-machine interaction. Simultaneously, check the well control system, including the blowout preventer (BOP) stack, choke and kill manifold, kill manifold, mud-gas separator, blowout lines, and hydraulic control system (remote control console, accumulator group, control lines, valves), for integrity and functional reliability. Pressure tests were conducted on the BOP to verify its sealing performance; the charging pressure and depressurization rate of the accumulator group were checked to ensure they met specifications; and the integrity and leakage of control pipelines were inspected. Wellhead tools, including casing heads, Christmas trees, blowout preventer gates, etc., as well as drilling tools (drill pipe, drill collars, drill bits, stabilizers, angular drill pipe), were inspected for wear, corrosion, deformation, and the integrity of connecting threads. Historical operational data was collected. This data covers all maintenance logs, repair records, drilling operation reports, major component replacement history, cumulative operating hours, fault event reports, and production efficiency data since the oil drilling rig was put into service.

[0034] As the final step in basic information collection and preprocessing, reviewing technical documents and procedures is also crucial. This includes obtaining the original design drawings of the oil drilling rig, the manufacturer's operation manual, maintenance procedures, equipment installation and commissioning records, data on previous technical modifications, product certificates, various qualification certification documents, and applicable industry standards and national regulations.

[0035] Oil drilling rigs can be mainly classified into mechanically driven, electrically driven, and hybrid-driven oil drilling rigs based on their power source and transmission method. Different drive types of oil drilling rigs differ significantly in structural characteristics, operating principles, failure modes, and key performance indicators. Therefore, it is necessary to clearly identify the drive type of the oil drilling rig being evaluated before conducting an evaluation. Once the drive type is determined, this invention will automatically match a set of quantitative evaluation standards specifically tailored to that type of oil drilling rig. For example, for mechanically driven oil drilling rigs, the evaluation standards will focus more on the efficiency, wear, reliability, and fuel economy of mechanical transmission components such as diesel engines, gearboxes, drive shafts, and chains; while for electrically driven oil drilling rigs, the evaluation standards will focus on the electrical performance, automation level, energy efficiency, electromagnetic compatibility, and insulation aging degree of generator sets, electric motors, frequency conversion systems, DC speed control systems, power distribution systems, and control systems. Hybrid-driven oil drilling rigs will comprehensively consider the key indicators of both types, with particular attention to the collaborative working efficiency and reliability between the mechanical and electrical systems. These customized evaluation criteria not only include specific testing methods and data collection requirements, but also clarify the quantitative scoring rules, weight allocation, and performance thresholds for each indicator, ensuring the relevance and accuracy of the evaluation.

[0036] In some embodiments, such as Figure 2 As shown, the evaluation model constructed in this invention is a multi-dimensional, hierarchical structure. Its core lies in decomposing the oil drilling rig into several primary systems, such as the derrick and base system, hoisting system, rotary system, drilling fluid circulation system, power system, well control system, and auxiliary systems. Each primary system is further subdivided into secondary components or subsystems, such as the hoisting system which includes the winch, wire rope, and traveling block hook. For each secondary component, a quantitative evaluation is conducted from six core dimensions: structural load-bearing capacity, material integrity, functional operation status, technological advancement, service life, and system compatibility.

[0037] Specifically, the quantitative scoring is implemented as follows: For the structural bearing capacity dimension, scores are awarded based on the bearing capacity rating obtained from testing according to the SY 6326 standard. For example, a rating of A (Excellent) receives 95-100 points, B (Good) receives 85-94 points, C (Pass) receives 70-84 points, and D (Fail) receives 0-69 points. If the fatigue crack depth of the main column of the derrick exceeds 2mm, 15 points will be deducted from the baseline score for this structural bearing capacity item; if the local deformation of the base beam exceeds 20% of the design allowable tolerance, 10 points will be deducted.

[0038] For the material integrity dimension, scoring is primarily based on the type, location, size, quantity, and severity of defects reported in the non-destructive testing (NDT) report. For example, if NDT results show no defects or only minor, non-expanding defects in the weld, a score of 90-100 is awarded. If severe defects such as cracks or inclusions are detected, and the defect size is close to or exceeds the repair standard (e.g., API 5B), points are deducted according to the severity of the defect. For instance, if a crack deeper than 1 / 3 of the wall thickness is found in the weld of a main load-bearing component, the material integrity score for that component will drop directly to below 50 points.

[0039] For the functional operation status dimension, based on on-site assessments and historical operating data, the wear level, sealing performance, lubrication condition, operational stability, and efficiency of components are quantified. For example, a deviation of more than 10% between the theoretical and actual flow rates of a drilling pump deducts 10 points; a radial runout of the main drive bearing exceeding 1.5 times the manufacturer's specified limit deducts 8 points; and a pressure loss in the hydraulic system exceeding 5% of the normal operating pressure deducts 5 points. An instrument indication accuracy error exceeding ±2% deducts 2 points.

[0040] Regarding the dimension of technological advancement, the assessment evaluates the technical level, automation level, energy-saving effect, and whether the latest technical standards are adopted for components or systems. For example, an electric winch using fully digital variable frequency control scores higher in technological advancement than a traditional DC speed-regulating winch; an intelligent control system with advanced fault diagnosis and predictive maintenance functions scores higher than a traditional relay control system. This part of the scoring is usually based on comparison of technical parameters and expert scoring.

[0041] Regarding the service life dimension, an assessment is conducted by combining the cumulative operating time, design life, wear patterns, and historical failure rate of components. For example, for components that are nearing or have exceeded their design life, even if they are currently operating normally, their service life score will be reduced accordingly to reflect their potential risks. For instance, a hoisting system wire rope that has reached 80% of its design life will have 8 points deducted from its score; if a component has exceeded its design life, the score will drop directly to below 50 points, and immediate replacement or enhanced monitoring will be recommended.

[0042] For the system compatibility dimension, the matching degree between different components or systems, interface compatibility, and impact on overall efficiency and reliability are evaluated. For example, if the output power of the power system does not match the power demand of the boosting system, resulting in long-term overload operation of the system, the compatibility score will decrease; lag or conflict in the control logic between the electrical system and the mechanical system will also lead to a decrease in this score.

[0043] Each dimension's score is based on pre-defined quantitative standards and deduction rules, and is objectively judged using data collected on-site and historical data. All sub-scores are presented on a 100-point scale.

[0044] After completing the quantitative scoring of each key system and component of the oil drilling rig across six dimensions, the next step is to weight and aggregate these scores to arrive at the overall score for the oil drilling rig. This weighted aggregation process fully considers the critical impact of each system and dimension on the overall safety, reliability, efficiency, and lifespan of the oil drilling rig. The weight allocation is not a simple average but is determined based on extensive engineering practice data, Failure Mode and Effects Analysis (FMEA), risk assessment results, and the experience of industry experts. In this embodiment, safety-related systems (such as the well control system and the structural integrity of the derrick base) are given higher weights, followed by systems that directly affect production efficiency and operational reliability (such as the hoisting system and power system), and then auxiliary systems and non-structural components.

[0045] Specifically, the weight allocation can be set as follows: In the derrick and base system: the structural load-bearing capacity and material integrity dimensions account for 30% of the weight, while the functional operation status, technological advancement, service life, and system compatibility dimensions account for 10% of the total weight.

[0046] In the enhancement system: the structural bearing capacity and material integrity dimensions account for 25% of the weight, while the functional operation status, technological advancement, service life, and system coordination dimensions account for 10% of the total weight.

[0047] In rotating systems: the structural load-bearing capacity and material integrity dimensions have a weight of 15%, while the functional operating status, technological advancement, service life, and system compatibility dimensions have a total weight of 5%.

[0048] In drilling fluid circulation systems: the dimensions of material integrity and functional operation status account for 20% of the weight, while the dimensions of technological advancement, service life, and system compatibility account for 5% of the total weight.

[0049] In power and transmission systems: the dimensions of functional operation status, technological advancement, and system compatibility have a weight of 25%, while the dimensions of material integrity and service life have a combined weight of 10%.

[0050] In power and electrical systems: the dimensions of functional operation status, technological advancement, and system compatibility have a weight of 25%, while the dimensions of material integrity and service life have a combined weight of 10%.

[0051] In well control systems: structural bearing capacity and material integrity have a weight of 40%, while functional operation status, technological advancement, service life, and system compatibility have a total weight of 10%.

[0052] In other auxiliary systems and wellhead tools: the total weight of each dimension is 5%.

[0053] It should be noted that the core of the above weight allocation is to reflect the actual importance of the indicators, rather than strictly normalizing them. In multi-level evaluation, the weights of different levels can be set independently (e.g., 30% for the derrick system + 25% for the hoisting system + ...), as long as the weights within the same level are reasonable. This allocation method is more in line with the priority differences of different systems in actual operations. Core systems such as the derrick and base (30%) and the well control system (40%) have higher weights, which is more in line with their safety and functional importance and can be understood as ratios. These weights have been iteratively optimized and verified by actual operating data. In the calculation process, the sub-scores of each secondary component in the six dimensions are first weighted and averaged according to the weights of each dimension within the component (for example, for wire rope, the weight of material integrity may be much higher than that of technological advancement) to obtain the comprehensive score of the component. Subsequently, the comprehensive scores of each secondary component are weighted and averaged according to the weights within its primary system to obtain the comprehensive score of the primary system. Finally, the comprehensive scores of all primary systems are weighted and summed according to the weights at the primary system level to obtain the total score of the oil drilling rig. The calculation formula can be expressed as:

[0054] in The overall score for the oil drilling rig; The number of first-level systems; For the first i The weights of each primary system; For the first i The number of secondary components under a primary system; For the first j The secondary component is in i Weights under a primary system; For the first k The evaluation dimension in the first j Weights under each secondary component; For the first i The first level system j The secondary component is in k The scoring is based on several dimensions; the primary system consists of the key systems of the oil drilling rig, and each primary system includes several secondary components. The power system consists of the power and transmission system and / or the power and electrical system.

[0055] This multi-level weighted aggregation ensures the comprehensiveness and scientific nature of the evaluation results, accurately reflecting the overall health status of the oil drilling rig.

[0056] After obtaining the overall score of the oil drilling rig, this invention compares the overall score with a preset grading standard to determine the comprehensive operational level of the oil drilling rig. The comprehensive grading is generally divided into the following levels: Grade A (Excellent): Total score of 90 or above. This indicates that the oil drilling rig is in excellent overall condition, with all performance indicators at their optimal levels, extremely low potential risks, and can operate efficiently and reliably. It is recommended to maintain the existing maintenance strategy.

[0057] Grade B (Good): Total score of 80 to 89 points. This indicates the oil rig is in good overall condition, with most indicators performing excellently. Some components may show minor wear or signs of aging, but these will not affect safe operation in the short term. It is recommended to strengthen routine inspections and perform preventative maintenance for identified potential problems.

[0058] Grade C (Pass): Total score of 70 to 79 points. This indicates that the overall condition of the oil drilling rig is average, with some defects or performance degradation that require attention, potentially affecting operational efficiency or reliability. Regular inspections and planned maintenance are recommended to address the issues identified in the report, and consideration should be given to component replacement or upgrades.

[0059] Grade D (Caution): Total score of 60 to 69. This indicates that the oil rig is in poor overall condition, with numerous defects or significantly degraded performance, posing a high potential risk that may affect operational safety or lead to downtime. It is recommended to immediately repair critical defects, develop a detailed maintenance plan, and strictly monitor the oil rig's operating status.

[0060] Grade E (Unqualified / Scrapped): Total score below 60 points. This indicates that the oil drilling rig is in seriously poor condition, with significant safety hazards or critical system failures, and is no longer safe to operate. It is recommended to immediately shut down the rig for a complete overhaul, replace major components, or consider scrapping it.

[0061] After completing the rating assessment, this invention will automatically generate a detailed evaluation report and maintenance recommendations. This report not only includes the overall rating and total score of the oil drilling rig, but more importantly, it will list in detail all defects, problems, and their respective systems and components discovered during the basic information collection and sub-item quantitative scoring process, and quantify the severity of each problem. For example, the report might state, "A fatigue crack measuring 5mm in length and 2.5mm in depth was detected in the weld of the main derrick, rated as a Class C risk, and immediate non-destructive repair is recommended, along with enhanced stress monitoring in this area." For components with degraded performance, the report will provide specific deviations from the design values ​​in the performance data and offer specific maintenance, repair, replacement, or upgrade recommendations, including recommended repair methods, spare parts models, estimated timelines, and cost estimates. For example, regarding the problem of reduced efficiency due to severe wear of the drilling pump piston, the report might recommend, "Replacing the piston and cylinder liner is expected to improve pump efficiency by 15%, and specific replacement cycles and material recommendations will be provided." In addition, the report will conduct a predictive assessment of the future operational risks of oil drilling rigs and provide recommendations for medium- and long-term upgrades and renovations based on their service life and technological advancement, thereby providing oil drilling rig management departments with a comprehensive, scientific, and actionable basis for decision-making.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A comprehensive quantitative evaluation method for oil drilling rigs, characterized in that, Includes the following steps: Collect and preprocess basic information of the oil drilling rig to obtain data on the operation and structural status of the oil drilling rig; Identify the drive type of the oil drilling rig and select the corresponding quantitative evaluation standard; Based on the selected quantitative evaluation criteria, the evaluation dimensions of each key system and component of the oil drilling rig are quantitatively scored item by item. The quantitative scores of each item are weighted and summarized at multiple levels to obtain the total score of the oil drilling rig. The oil drilling rig is comprehensively rated based on its overall score, and a corresponding evaluation report and maintenance recommendations are generated.

2. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 1, characterized in that, The basic information of an oil drilling rig includes structural load-bearing capacity test data of key load-bearing structural components, non-destructive testing data of key stress-bearing components, important pipelines and containers, on-site assessment and inspection data of all core systems and auxiliary facilities of the oil drilling rig, and historical operating data of the oil drilling rig.

3. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 2, characterized in that, Key load-bearing structural components of oil drilling rigs include the derrick and base; methods for obtaining structural load-bearing capacity test data for these key load-bearing structural components include: Resistance strain gauges were attached to the main columns, diagonal braces, horizontal braces, base beams, decking, and connecting lugs of the derrick, and displacement and force sensors were installed at preset monitoring points. Real-time physical quantities under simulated loads were acquired using the resistance strain gauges, displacement sensors, and force sensors and imported into stress analysis software. The collected strain and displacement data were then analyzed inversely using the finite element method and compared with the theoretical stress distribution, allowable stress limits, and load-bearing capacity evaluation indicators specified in the oil drilling rig design drawings to obtain the load-bearing capacity test data of the derrick and base.

4. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 2, characterized in that, Key load-bearing components of an oil drilling rig include the derrick and base, hoisting system, rotary system, drilling fluid circulation system, well control system, and wellhead tools; non-destructive testing methods include ultrasonic testing, magnetic particle testing, eddy current testing, and radiographic testing; among which: Ultrasonic testing is used to detect volumetric and surface defects in welds, shaft components, and thick-walled structural parts. By analyzing the propagation time, amplitude, and waveform changes of the echo signal, internal discontinuities are identified, thereby obtaining information on the location, depth, size, and shape of the defects. Magnetic particle testing is used to detect surface and near-surface cracks, folds, and inclusions in ferromagnetic material components. It involves applying a magnetic field to the component under test and spraying magnetic powder onto its surface, then observing the magnetic trace aggregation phenomenon to determine the presence of defects. Eddy current testing is used to detect surface and near-surface defects in conductive material components. It identifies defects by sensing disturbances in the eddy current field. Radiographic testing is used to detect internal defects in castings, welds, and thick-walled containers, including shrinkage cavities, porosity, slag inclusions, and cracks.

5. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 2, characterized in that, All core systems and auxiliary facilities of an oil drilling rig include the derrick, base, hoisting and rotation system, drilling fluid circulation system, power and transmission system, and power and electrical system; On-site assessment and inspection data includes observation and recording of equipment appearance, function, wear level, corrosion status, connection tightness, lubrication, sealing performance, safety protection devices, instrument indication accuracy, and ease of operation; among which: The on-site assessment and inspection data of the derrick includes whether there is visible deformation, fatigue cracks, corrosion damage, or cracks and leaks in the columns, diagonal braces, and horizontal braces; The on-site assessment and inspection data for the base includes geometric dimension measurement data of the base steel structure, beams, decking, and fasteners; wear measurement and loosening inspection data of connecting pins and bolts; integrity data of cotter pins and lock nuts; and integrity and reliability data of fall arrest devices, safety ladders, platform railings, lighting systems, guy ropes, and ground anchors. The on-site assessment and inspection data for the hoisting and rotating systems include the working condition and wear degree of the winch drum, braking system, transmission gears, bearings, clutch, and brakes; wear, broken wires, corrosion, deformation, pitting, and lubrication condition of the hoisting system wire ropes, as well as the model, specifications, production batch, service life, and last replacement date of the hoisting system wire ropes; wear, clearance, lubrication, and operational stability of the traveling block, hook, swivel, and turntable; wear and functional normality of the motor, gearbox, cooling system, manifold, boom cylinder, and guide rail slider of the top drive system; and hydraulic system pressure loss data for the boom cylinder. The on-site assessment and inspection data of the drilling fluid circulation system includes the wear, sealing, pressure stability, and working efficiency of the drilling pump; the integrity of the screens of the solids control equipment, the condition of the nozzles, the wear of the hydrocyclones, the bearings, the working condition of the motors, and the separation effect; the integrity, corrosion resistance, sealing performance, and operational flexibility of the mud tanks, mud agitators, mud manifolds, and valves; and the functional integrity of the replenishment system, chemical dosing system, and testing equipment. The on-site assessment and inspection data of the power and transmission system include the diesel engine's operating stability, fuel consumption, oil leakage and starting performance; the wear, looseness and lubrication of the gearbox, transfer case, coupling, universal joint, drive shaft, chain and belt; and the working performance and sealing of the hydraulic torque converter and hydraulic coupling. The on-site assessment and inspection data of the power and electrical systems include the operating performance of the main generator set and auxiliary generator set, the stability of the generator voltage and current, fuel consumption data, the integrity and normal function of the distribution cabinet, cables, transformers, motors, DC speed control system, AC frequency conversion system, PLC control system, HMI human-machine interface and various sensors and actuators, the integrity and functional reliability of the well control system, the sealing performance of the blowout preventer, the charging pressure and depressurization rate of the accumulator group, the integrity and leakage of the control pipeline, and the wear, corrosion, deformation and integrity of the connecting threads of the wellhead tools and drill strings.

6. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 1, characterized in that, The key systems of an oil drilling rig include: Derrick and base system, hoisting system, rotary system, drilling fluid circulation system, power and transmission system, power and electrical system and other auxiliary systems; The evaluation dimensions include: The structural load-bearing capacity dimension is scored based on the structural load-bearing capacity test data of the key load-bearing structural components of the oil drilling rig. The material integrity dimension is based on non-destructive testing data of key load-bearing components, important pipelines, and containers of oil drilling rigs, which scores the type, location, size, quantity, and severity of defects. In terms of functional operation status, based on the on-site assessment and inspection data and historical operation data of all core systems and auxiliary facilities of the oil drilling rig, the wear degree, sealing performance, lubrication condition, operational stability and efficiency of the components are quantitatively scored. The level of technological advancement is assessed based on the comparison of technical parameters and expert scoring, evaluating the technical level, automation level, energy-saving effect, and whether the latest technical standards are adopted for components or systems. The service life dimension is scored by combining the component's cumulative operating time, design life, wear pattern and historical failure rate; The system coordination dimension is used to evaluate the compatibility between different components or systems, interface compatibility, and the impact on overall efficiency and reliability. The scoring for each dimension is based on preset quantitative standards and deduction rules, and is objectively judged through on-site data and historical data, and presented in a 100-point scale.

7. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 6, characterized in that, In the process of summarizing the quantitative scores of each item through multiple levels of weighting, the weight allocation method is as follows: Derrick and base system: The structural load-bearing capacity and material integrity dimensions account for 30% of the total weight; the functional operation status, technological advancement, service life, and system compatibility dimensions account for a total weight of 10%. Enhancement System: The structural load-bearing capacity and material integrity dimensions account for 25% of the total weight, while the functional operation status, technological advancement, service life, and system coordination dimensions account for 10% of the total weight. Rotating systems: The structural load-bearing capacity and material integrity dimensions each have a weight of 15%, while the functional operation status, technological advancement, service life, and system compatibility dimensions each have a total weight of 5%. Drilling fluid circulation system: The dimensions of material integrity and functional operation status account for 20% of the total weight, while the dimensions of technological advancement, service life, and system compatibility account for 5% of the total weight. Power and transmission system: The dimensions of functional operation status, technological advancement, and system compatibility have a weight of 25%, while the dimensions of material integrity and service life have a combined weight of 10%. Power and electrical systems: The dimensions of functional operation status, technological advancement, and system coordination are weighted at 25%, while the dimensions of material integrity and service life are weighted at a total of 10%. Well control system: The structural bearing capacity and material integrity dimensions account for 40% of the weight, while the functional operation status, technological advancement, service life, and system compatibility dimensions account for 10% of the total weight. Other auxiliary systems: The total weight of each dimension is 5%.

8. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 7, characterized in that, The specific method for weighting the quantitative scores of each item at multiple levels is as follows: The comprehensive score of a secondary component is obtained by weighting the scores of each of the six dimensions in the sub-scores of each secondary component according to the weights of each dimension within that secondary component. The overall score of each secondary component is weighted and averaged according to its weight within the primary system to obtain the overall score of the primary system. The overall score of the oil drilling rig is obtained by weighting and summing the comprehensive scores of all primary systems according to their respective weights at the primary system level. The expression for this score is as follows: in The overall score for oil drilling rigs; The number of first-level systems; For the first i The weights of each primary system; For the first i The number of secondary components under a primary system; For the first j The secondary component is in i Weights under a primary system; For the first k The evaluation dimension in the first j Weights under each secondary component; For the first i The first level system j The secondary component is in k The scoring is based on several dimensions; the primary system consists of the key systems of the oil drilling rig, and each primary system includes several secondary components. The power system consists of the power and transmission system and / or the power and electrical system.

9. The comprehensive quantitative evaluation method for oil drilling rigs according to claim 8, characterized in that, The specific methods for comprehensively evaluating oil drilling rigs based on their overall score and generating corresponding evaluation reports and maintenance recommendations include: When the total score of the oil drilling rig is above 90 points, the grade is A, and it is recommended to maintain the existing maintenance strategy. When the total score of the oil drilling rig is between 80 and 89 points, the grade is B. It is recommended to strengthen routine inspections and carry out preventive maintenance for potential problems identified. When the total score of the oil drilling rig is 70-79 points, the grade is C. It is recommended to conduct regular inspections and planned maintenance for the problems pointed out in the report, and consider component replacement or upgrades. When the total score of an oil drilling rig is between 60 and 69 points, the grade is D. It is recommended to immediately repair the key defects, develop a maintenance plan, and strictly monitor the operating status of the drilling rig. When the total score of an oil drilling rig is below 60 points, it is recommended to immediately shut down the rig for a complete overhaul, replace major components, or consider scrapping it.

10. A system based on the comprehensive quantitative evaluation method for oil drilling rigs according to any one of claims 1 to 9, characterized in that, include: The data acquisition module is used to collect and preprocess basic information of the oil drilling rig to obtain the operation and structural status data of the oil drilling rig. The quantitative evaluation standard selection module is used to identify the drive type of the oil drilling rig and select the quantitative evaluation standard corresponding to that drive type. The sub-item quantitative scoring module is used to perform sub-item quantitative scoring on various evaluation dimensions of key systems and components of oil drilling rigs based on the selected quantitative evaluation criteria. The weighted summary module is used to perform multi-level weighted summaries of the quantitative scores of each item to obtain the total score of the oil drilling rig. The rating module is used to comprehensively rate the oil drilling rig based on its total score and generate corresponding evaluation reports and maintenance recommendations.

Images