45 results about "Wax deposition" patented technology

The invention discloses a fuel gas system management method and system based on data analysis, and belongs to the technical field of fuel gas system management.The fuel gas system management method comprises the steps that a wax deposition kinetic model and a deep neural network are combined, and a hybrid prediction model architecture is designed; the wax deposition kinetic model is used for describing physical and chemical processes of wax deposition and providing basic prediction capability; the deep neural network is used for capturing a non-linear relationship and a complex mode in the data and improving the accuracy and generalization ability of prediction; based on an improved particle swarm optimization algorithm (PSO-ADE), a self-adaptive pigging decision engine is designed; initializing the algorithm to generate an initial particle swarm; operating an algorithm, and evaluating and updating the particles according to a target function; through iterative optimization, an optimal pigging strategy is found; and feedback data is collected, and the algorithm is further adjusted and optimized, so that the accuracy and effectiveness of decision making are improved. The pipeline cleaning strategy of the oil pipeline can be optimized.

The invention discloses a heating control method for an engine gas delivery pipeline of a marine gas generator set, which relates to the technical field of marine gas power systems, and comprises the following steps: collecting multi-dimensional environment state information of the gas delivery pipeline in real time, analyzing gas components and pressure fluctuation data, and calculating the temperature of the gas delivery pipeline; a theoretical dew point temperature and a potential paraffin precipitation temperature under real-time pressure are calculated by combining a fuel gas physical property database, a real-time heat exchange model is constructed by combining a pipeline outer wall temperature gradient and a cabin environment temperature, theoretical temperature attenuation curves of different positions of fuel gas in a pipeline are obtained, condensation and paraffin precipitation risk positions and degrees are predicted after comparison, and a real-time heat exchange model is established. And differential electric heat tracing control strategies of different sections of the pipeline are generated in combination with relative humidity data of the cabin. The method can adapt to the real-time physical property of gas and the heat exchange state of the pipeline section, and the heating control execution mode of the gas pipeline is optimized.

The invention belongs to the technical field of oilfield chemistry, and particularly relates to a viscosity-reducing paraffin inhibitor for oilfield oil well production and a preparation method of the viscosity-reducing paraffin inhibitor. Comprising the following components in percentage by mass: 15.08%-17.92% of maleic anhydride, 18.01%-26.88% of nonylphenol polyoxyethylene ether, 23.2%-25.4% of a benzylamine solution, 3.97%-5.0% of a 5% ferrous sulfate aqueous solution, 3.97%-5.00% of a 5% ammonium persulfate aqueous solution and 15.87%-17.19% of a sodium hydroxide aqueous solution. The viscosity-reducing paraffin inhibitor solves the problems that the density and viscosity of crude oil are increased in the later stage of development of most oil wells in oil fields, paraffin precipitation is serious, the repair-free period is short, and the effect of the existing paraffin inhibitor becomes poor year by year, prolongs the repair-free period of the oil wells, can effectively relieve frequent well repair caused by paraffin precipitation in production of the oil wells in the oil fields, does not contain chlorine, and is environment-friendly. The paraffin control and viscosity reduction effects are considered, and meanwhile, the influence on downstream refining equipment is avoided.

The invention relates to a method for predicting the wax deposition amount in the conveying process of an oil-water mixed conveying pipeline. The method comprises the following steps: measuring the temperature of soil near a buried oil-water mixed conveying pipeline; measuring the temperature of the oil-water mixture in the oil-water mixed transportation pipeline under different working conditions and the speed of the oil-water mixture in the oil-water mixed transportation pipeline under different working conditions; an oil-water mixture sample is obtained at an on-site wellhead sampling point, and the water content of the oil-water mixture in the conveying process of the oil-water mixed conveying pipeline is calculated; scraping off wax deposits from the oil-water mixed transportation pipeline, and calculating the wax deposition thickness; the wax deposition amount of the oil-water mixed transportation pipeline is comprehensively influenced by the water content, the inlet speed, the inlet temperature and the soil temperature in the oil-water mixed transportation pipeline, and the multi-physical-quantity operation parameters are combined to form a multi-parameter combination form orthogonal table; and establishing a multi-parameter combination mathematical model in the operation process of the oil-water mixed transportation pipeline, and predicting wax deposition in the transportation process of the oil-water mixed transportation pipeline. The method realizes accurate and convenient prediction of the wax deposition amount in the conveying process of the oil-water mixed conveying pipeline.

The present invention discloses an experimental device and method for studying the wax deposition law in porous media in near-wellbore areas, belonging to the technical field of wax deposition experiments. The experimental device comprises a wax deposition visualization model, a multi-stage temperature control module, a liquid injection and cleaning module, a confining pressure adjustment module, a back pressure control module, a product recovery module and an image acquisition module; a natural core slice with a pore throat structure is simulated by a wax deposition visualization model, a multi-stage temperature control module is used to perform graded local heating to simulate complex formation temperature conditions, a confining pressure adjustment module is used to provide confining pressure, a back pressure control module is used to adjust the model outlet pressure to simulate bottom hole flow pressure, a liquid injection and cleaning module is used to inject crude oil and cleaning fluid therein, and an oil displacement experiment and subsequent cleaning are completed; an image acquisition module and a visualization clamping module are used to intuitively observe the wax deposition process in the model, and the wax crystal phase change process during the experiment is analyzed, and the wax deposition formulas of different parts of the model are used to characterize the step-by-step precipitation law of wax.

The present application relates to the technical field of oil conveying device, and particularly relates to a waxy crude oil cold conveying device, which comprises an oil storage tank and a cooling oil tank; a refrigeration device is arranged on the periphery of the cooling oil tank; a stirrer and a second temperature sensor are arranged in the cooling oil tank; the refrigeration device comprises an outer frame, a refrigeration pipe, a natural gas pipeline, an expander and a first heat exchanger; the refrigeration pipe comprises a surrounding part and a line part; the surrounding part is located inside the outer frame and surrounds the outer wall of the cooling oil tank; the line part is located outside the outer frame; the line part exchanges heat with the natural gas pipeline at the first heat exchanger; and a fourth temperature control valve is arranged on the line part. The present application also provides a waxy crude oil cold conveying method. The present application can prepare a uniform wax crystal suspension, thereby avoiding the wax deposition phenomenon in the pipeline, effectively solving the blockage problem of the crude oil conveying pipeline, saving the pigging cost; the natural gas in the natural gas pipeline is used for expansion heat exchange, thereby saving the refrigeration energy consumption and refrigeration cost.

The invention discloses an anti-waxing electric heating carbon fiber continuous sucker rod, belongs to the technical field of sucker rods, and aims to solve the problems that the sucker rod is heated by only depending on a heating cable to prevent wax precipitation of crude oil, such as power supply failure and insufficient power of the cable, a deposited wax layer can be hardened, so that softening is difficult in subsequent heating, extra hot washing or mechanical wax removal is needed, and the service life of the sucker rod is shortened. In order to solve the problems that an existing sucker rod is not provided with a heating cable, the heating cable only can prevent wax and cannot deal with scaling on the surface of the sucker rod, the invention comprises a sucker rod main body and a linkage mechanism, and the linkage mechanism used for automatic scraping is arranged in the middle of the inner side of the sucker rod main body. The outer surfaces of a bottom oil rod and a connecting oil rod can be scraped and cleaned through rotation of the scraper, the possibility of crude oil wax precipitation can be greatly reduced through cooperation of the scraper and heating of a heating cable on a sucker rod body, shutdown or additional operation is not needed, wax removal during operation is achieved, the device adapts to the working condition of continuous crude oil wax precipitation, the temperature influence is avoided, and the service life of the device is prolonged. The wax removal stability can be ensured.

The present application relates to the technical field of oil exploitation, and particularly relates to an automatic control and regulation dosing method and system for oil well, which comprises the following steps: arranging a plurality of temperature sensors on the oil conveying pipeline in the oil well to collect data points; clustering all the data points to obtain the category labels of all the data points, connecting based on the obtained category label sequence in spatial order, and outputting M continuous dosing sections in space; collecting the wax deposition characteristic parameters of the first dosing section, inputting the obtained wax deposition characteristic parameters into a pre-constructed wax inhibitor concentration demand prediction model, and outputting the wax inhibitor concentration demand of the first dosing section. According to the present application, the wax inhibitor dosage is accurately controlled according to the actual flow state and temperature distribution of the oil body, so that the medicament is fully mixed in the pipeline and reaches the target concentration, the local dosing deficiency or waste is avoided, and the wax prevention effect and the drug economy are significantly improved.

The embodiment of the application provides a kind of pore wall wax deposition thickness measuring device and method, including first thermostat, hex valve, first high-precision displacement pump, second thermostat, first gas flow meter, third thermostat, second high-precision displacement pump, third high-precision displacement pump, fourth high-precision displacement pump, third pressure sensor, fourth pressure sensor, fourth electric valve, differential pressure sensor, fifth electric valve and control terminal, first thermostat is provided with first high-temperature autoclave and second high-temperature autoclave, second thermostat is provided with core holder, back pressure valve and oil-gas separation mechanism, third thermostat is provided with third high-temperature autoclave.Based on first thermostat, second thermostat and third thermostat etc., the influence of fluid heat transfer and porous medium heat transfer on wall wax deposition can be simulated, and the influence of different temperature and cooling rate on wall wax deposition can be analyzed by adjusting temperature.

The invention relates to the technical field of air ventilation regulation, in particular to an air conditioning, dehumidification energy saving and energy recovery control method which comprises the following steps: S1, calibrating a wax deposition sensitivity coefficient and dividing regulation priority 1-3 days after cherries turn color to a coloring period; s2, determining an evaporation rate and a temperature and humidity fluctuation adaptive interval; s3, soil heat and moisture migration requirements are synchronously matched, and the evaporation rate is maintained in an adaptive interval; s4, turbulent flow buffer regulation and control are started when the standard exceeds the standard; s5, realizing heat flow density homogenization, and simulating and optimizing global heat flow distribution in combination with TRNSYS; s6, detecting the thickness and uniformity of the wax coat in real time; and S7, three days before the end of the coloring period, backtracking and correcting the adaptive interval S2, the airflow parameters S3 and the heat flow distribution scheme S5 to form a closed-loop optimization mechanism. According to the method, accurate matching of parameters such as air conditioning in a wax synthesis key environment is realized through wax deposition sensitivity coefficient calibration, dynamic mapping model construction and partition targeted regulation and control, and the thickness uniformity and integrity of a wax coat are effectively improved.

The invention relates to the technical field of oilfield chemistry, in particular to a paraffin removal viscosity reducer for hydraulic jet paraffin removal and a use method thereof, the paraffin removal viscosity reducer for hydraulic jet paraffin removal comprises the following raw materials in percentage by mass: 0.1-0.5% of octadecanol, 5-10% of eicosyl heavy mahogany petroleum sulfonate, 5-20% of ethanol, 1-5% of polyethylene oxide surfactant, 10-20% of betaine surfactant, 0.1-0.2% of hydroxyethyl cellulose and the balance of water. And the paraffin removal viscosity reducer is used for adding a required amount of the paraffin removal viscosity reducer into a working medium to obtain a paraffin removal working solution, the paraffin removal working solution is injected into the light casing oil well in a 10-13MPa hydraulic jet fluid form, and the paraffin deposits on the casing wall of the light casing oil well are cleaned by using the hydraulic jet fluid. The paraffin removal and viscosity reduction agent disclosed by the invention is simple in preparation method, can achieve a synergistic effect with a hydraulic jet fluid technology, and can maintain efficient paraffin removal and viscosity reduction performance in a high-salinity and high-specific-gravity slurry or solid-free well killing fluid environment.

The present application relates to the technical field of waxy crude oil pipeline transportation and storage, and particularly relates to a method for determining the effective diffusion coefficient of wax molecules, comprising the following steps: S1, establishing a calculation model of the effective diffusion coefficient of wax molecules in wax deposits; S2, obtaining multiple wax crystal microscopic images of the wax deposit sample at different temperatures through a microscopic observation device; S3, performing image preprocessing on each wax crystal microscopic image, and combining the preprocessed wax crystal microscopic images, the calculation model of step S1 is used to calculate the effective diffusion coefficient of wax molecules in the wax deposit sample in each wax crystal microscopic image; S4, fitting the effective diffusion coefficient of wax molecules in the wax deposit sample in each wax crystal microscopic image, and obtaining the change relationship between the ratio of the effective diffusion coefficient of wax molecules in the wax deposit and the diffusion coefficient of wax molecules in the crude oil and the solid-phase wax crystal particle concentration. The method for determining the effective diffusion coefficient of wax molecules can accurately calculate the effective diffusion coefficient of wax molecules.

The invention belongs to the field of remote well patrol, particularly relates to an oil well data wireless remote transmission and remote management method, and aims to solve the well patrol problem of a remote single well. The method comprises the following steps: at an oil well end, acquiring well patrol data through a data acquisition controller; the well patrol data comprises the current, load and indicator diagram of the oil pumping unit, and the liquid level and oil temperature of a single well tank; at the monitoring end, the center console computer receives well patrol data; the center console computer judges wax precipitation in the oil well according to the current, the load and the indicator diagram of the oil pumping unit, and when the liquid level and the oil temperature of the single-well tank meet well washing conditions, the data acquisition controller opens the remote control solenoid valve according to a control command of the center console computer, and high-temperature oil in the single-well tank flows into the oil well through the drainage pipeline for well washing. According to the invention, remote communication control of the oil well end and the monitoring end can be realized, the communication cost is saved, the well patrol cost and time of a remote oil well are saved, the labor intensity is reduced, the oil well maintenance efficiency is improved, and related risks of on-site well washing are avoided.

The invention discloses a device and a method for simulating a wax deposition test in a flowing process of crude oil with different components. The device comprises a gas supply tank, a mixing tank, a centrifugal pump I, a wax deposition test system and a dosing and mixing tank, an outlet of the gas supply tank is connected with a mixing tank, an outlet of the mixing tank is connected with a centrifugal pump I, the centrifugal pump I is connected with a test sample inlet of a wax deposition test system through a test sample input pipeline, a test sample outlet of the wax deposition test system is connected with an inlet of a dosing mixing tank, and an outlet of the dosing mixing tank is connected with a recovery pipeline; a recovery tank is connected to the recovery pipeline, and the recovery pipeline is communicated with the test sample input pipeline. Different from the situation that the wax precipitation rule test result cannot be reproduced due to the fact that wax sample components in crude oil are reduced along with the prolonging of test time in the conventional large-size wax precipitation simulation test, the test method has very small influence on the wax components in the oil sample, and can be used for testing multiple parameters by using the same oil sample, so that the consistency of the test sample composition is ensured, and the test efficiency is improved. And the test result reproducibility is good.

This application discloses a gas system management method and system based on data analysis, which belongs to the technical field of gas system management. It includes combining a wax deposition kinetics model with a deep neural network to design a hybrid prediction model architecture; the wax deposition kinetics model is used to describe the physical and chemical processes of wax deposition and provide basic prediction capabilities; the deep neural network is used to capture nonlinear relationships and complex patterns in the data to improve the accuracy and generalization of predictions; based on an improved particle swarm algorithm (PSO-ADE), an adaptive pigging decision engine is designed; the algorithm is initialized to generate an initial particle swarm; the algorithm is run to evaluate and update the particles according to the objective function; the optimal pigging strategy is found through iterative optimization; feedback data is collected and the algorithm is further adjusted and optimized to improve the accuracy and effectiveness of decisions. This application can optimize the pigging strategy of oil pipelines.

This utility model provides a device for testing wax deposition in dissolved gas crude oil, comprising: a fixed frame, a deposition component for depositing wax movably mounted on the upper side of the fixed frame, a deposition tank for storing crude oil on the left front side of the fixed frame, and a stripping component for stripping the deposited wax on the right front side of the fixed frame. Compared with the prior art, this utility model has the following advantages: by setting the deposition component and the deposition tank, the deposition cylinder can rotate circumferentially, thereby contacting more dissolved gas crude oil, thus simulating the effect of wax deposition under the movement of dissolved gas crude oil, avoiding the problem of test result distortion caused by static wax deposition, and helping to ensure the authenticity of the test environment. The setting of the stripping component, the fixed frame, and the deposition component reduces the amount of wax residue on the deposition cylinder, ensuring the authenticity and reliability of the test results.

The utility model provides a self-stripping anode for a paraffin precipitation container, which comprises a mounting seat, an anode and a spiral metal wire are mounted on the mounting seat, the spiral metal wire is spirally wound on the periphery of the anode, a gap is reserved between the spiral metal wire and the anode, and the anode and the spiral metal wire are respectively connected with an external power supply. The self-stripping anode can strip a wax deposition layer on the surface of the anode, and the use limitation of an impressed current system in a wax deposition container is solved.

The invention discloses an oil well equipment wax precipitation prediction model construction method and device, equipment and a storage medium. The method comprises the following steps: acquiring working condition data of a rod-pumped well in a paraffin precipitation state and a non-paraffin precipitation state, wherein the working condition data comprises a plurality of pieces of linear characteristic data; inputting each piece of sample data of the working condition data into the trained neural network model, and extracting a first specified number of nonlinear features from a middle specified layer of the neural network model; the neural network model is obtained by using working condition data as training data; combining the non-linear features of each piece of sample data with the piece of sample data to obtain combined sample data comprising linear features and non-linear features; and training a prediction model based on a random forest algorithm by using the combined sample data to obtain an equipment paraffin precipitation prediction model. According to the method, the problem of processing high-order nonlinear data by the model for predicting the paraffin precipitation of the oil well equipment is solved, the interpretability problem of the model is also solved, and the working condition of the paraffin precipitation of the oil well equipment can be predicted timely and accurately.

The present invention discloses an experimental device and experimental method for dynamic wax deposition or wax removal, which specifically relates to the technical field of oil and gas field development, including an experimental chamber, a displacement module, a controller, a pressure regulating module for regulating the pressure in the experimental chamber, a temperature control device for regulating the temperature in the experimental chamber, and an oil pumping device; the displacement module includes a liquid storage device and a driving device for transporting the substance in the liquid storage device to the experimental chamber; during the wax deposition experiment, a clean wellbore or a clean formation porous medium is placed in the experimental chamber, the liquid storage device stores an oil-water mixture, and the oil pumping device is used to extract the oil-water mixture in the central through hole of the clean wellbore; during the wax removal experiment, a waxed wellbore or a waxed formation porous medium is placed in the experimental chamber, and the liquid storage device stores a wax remover. The present invention can deeply understand the wax deposition rules and influencing factors of wellbores and formation porous media, evaluate the wax removal effects of different wax removers, optimize the oilfield mining process, improve recovery, and reduce costs.

The application provides a pipeline wax deposition effect testing system and method, the testing system comprising: a wax precipitation device, a sonar detection device and a processing device; the wax precipitation control device is used for controlling the wax precipitation process in the pipeline, the wax precipitation process is the process that the wax is precipitated and deposited in the pipeline; the sonar detection device is used for emitting a first sound wave into the pipeline after the end of the wax precipitation process, and recovering a second sound wave corresponding to the first sound wave, and sending the data of the first sound wave and the second sound wave to the processing device; the processing device is used for determining the form of the wax deposition in the pipeline according to the data of the first sound wave and the second sound wave. The application can effectively obtain the characteristics of the wax deposition.

The utility model discloses a superstrong viscosity-reducing paraffin-control oil increasing device, which belongs to the technical field of oil increasing devices and comprises an upper joint and a short section, the short section is mounted in the upper joint, an overflowing short section is mounted in the short section, a stirring component is mounted in the overflowing short section, and a heating component is mounted on the outer surface of the overflowing short section. Vortex formed by flowing of crude oil can drive the multiple rotating blades to rotate through hydrodynamics, when the rotating blades and the stirring rods drive the multiple stirring rods to rotate, wax crystal structures and other solid particles in the crude oil can be broken, the crude oil can be mixed more evenly, deposition of high-concentration wax in a local area is reduced, and the quality of the crude oil is improved. The fluidity of crude oil can be improved by stirring the crude oil, so that the more uniform and low-viscosity crude oil can be more easily extracted to the ground, meanwhile, when the stirring rod rotates, the scraping plate can be driven to remove sediments on the inner wall of the overflowing short section, and formed wax crystals can be promoted to be re-dissolved back into the crude oil by heating.

The utility model discloses a wax deposition determination flash filter relates to the petroleum chemical industry detection equipment field, including filter main part, two groups of filter inlet joint, bar hollow support, filter screen and netted support, through the combination design of bar hollow support and filter screen, netted support makes filter screen installation stable, can effectively resist high pressure fluid impact, prevents the collapse, through the pull bar hollow support, takes out the whole filter screen and netted support whole, has realized the quick sampling of deposit and the convenient replacement of filter screen, and filter screen design can replace, makes the device can nimblely adapt to the multiple crude oil system of different wax crystal size, promotes the experimental flexibility and repeatability, provides high reliability data support for wax deposition mechanism research and prevention and control technology development, widens the application range.

This invention relates to the field of oil pumping unit control system technology, and particularly to an intelligent control method and system for a rotary motor commutating oil pumping unit. An intelligent control method for a rotary motor commutating oil pumping unit includes the following steps: S1: During the process of the oil pumping unit collecting high-wax crude oil, downhole environmental data and oil pumping unit operating data are collected in real time; S2: A pressure wax precipitation model is constructed based on the downhole environmental data, and a wax precipitation risk index is calculated based on the pressure wax precipitation model; S3: The pumping unit's resistance strength index is calculated based on the pumping unit operating data and the wax precipitation risk index; S4: The target operating stroke of the pumping unit is optimized based on the resistance strength index; S5: The rotary motor is commutated based on the target operating stroke. This invention can achieve a dynamic balance between fluid supply capacity utilization and wax deposition suppression, and can dynamically adapt to different oil well geological conditions and crude oil wax precipitation characteristics.

The invention relates to the technical field of monitoring equipment, and discloses a device and method for monitoring the mixed-phase deposition adsorption thermal conductivity of wax-bearing crude oil in a shaft, and the device comprises a reaction kettle, a mixed-phase wax-bearing sediment adsorption thermal conductivity monitoring module, a pressure control module, a material control module and a temperature control module; a mixed-phase wax-containing sediment adsorption thermal conductivity monitoring module is arranged in the reaction kettle and is used for adsorbing mixed-phase wax-containing sediment in the reaction kettle and monitoring thermal conductivity; the pressure control module is arranged at the top of the reaction kettle and is used for performing constant-pressure control on the reaction kettle; one part of the material control module is arranged inside the reaction kettle, the other part of the material control module is arranged outside the reaction kettle, the material control module is used for conveying monitoring materials into the reaction kettle, and the materials comprise a liquid medium and mixed-phase wax-containing sediments; the temperature control module is arranged outside the reaction kettle and is used for providing constant-temperature heat preservation for the reaction kettle. The sediment thermal conductivity change can be monitored through the pressure-temperature sensor, and the problem that shaft blocking cannot be dynamically predicted is solved.

The invention relates to a magnetic descaling device for downhole operation, relates to the technical field of petrochemical engineering, and is used for descaling liquid in a shaft in the petroleum industry. The descaling device comprises an upper connector, a screen pipe, a central base pipe, an outer cylinder and a lower connector. After liquid in a well enters the descaling device through the lower connector, viscous liquid flows slowly, enters the central base pipe along the lower end of the central base pipe, passes through the screen pipe and is divided into small liquid particles, the overall viscosity is reduced, and the viscous liquid enters a production pipe column along with the liquid. The liquid with small viscosity flows fast, flows in through the annular space of the central base tube and the outer cylinder after being shunted from the bottom, and enters a production pipe column through the inner circulation hole and the hole in the upper portion of the screen tube. The magnet outside the central base tube generates magnetic lines to radiate in the descaling device, liquid flowing through the descaling device is magnetized, the paraffin crystallization pattern is destroyed, and the paraffin precipitation speed is reduced. The magnet and the central base tube have high magnetism and can adsorb iron oxide chips and mineral impurities, and a good descaling effect is achieved.

The application discloses an oil-in-water emulsion type wax remover and a preparation method and application thereof. The oil-in-water emulsion type wax remover comprises the following components in percentage by mass: 40-50% of an organic solvent; 0.3-0.51% of a surfactant; 5-10% of a mutual solvent; 0.5-1.0% of an alkaline regulator; and the balance of distilled water. The organic solvent comprises kerosene and an aromatic hydrocarbon solvent, and the aromatic hydrocarbon solvent comprises dimethylbenzene and a high-boiling-point aromatic hydrocarbon solvent. The oil-in-water emulsion type wax remover has suitable component formula, good synergy and strong wax removal capacity. The oil-in-water emulsion type wax remover can be used for removing wax deposition in a gas well wellbore and wax deposition in an oil well wellbore, and has the characteristics of fast wax removal rate, safe use, low toxicity and environmental protection.

The present invention provides an oil well wax cleaning method, device, equipment and readable storage medium, relating to the field of oil well production technology, including obtaining first information, the first information including the load data of the oil well and the stroke corresponding to the recording time of each load data; identifying the current working status of the oil well based on the first information, the working status including the wax deposition warning state; the wax deposition warning state is used to trigger the sending of a first wax cleaning control command, the first wax cleaning control command including a command to control a crane to lift the polished rod according to a preset number of lifting times and a preset lifting height, thereby identifying the wax deposition state in the load data and reducing the wax adhesion in the oil production wellbore by lifting the polished rod.

According to the preparation method of the wax deposition resistant super-amphiphobic film capable of being heated at low pressure, the super-amphiphobic film of a double-layer structure with the heating layer and the wax resistant layer is provided, the heating layer is heated at low voltage so as to avoid unnecessary energy waste, the wax resistant coating on the surface is of a micron / nanometer / nanometer special composite rough structure, and the wax deposition resistant performance of the super-amphiphobic film is improved. The nano-particles are nano-silica generated by self-making through the reduction effect of tetraethoxysilane, the surfaces of the nano-particles are provided with smaller mastoids, when the super-amphiphobic film is prepared, firstly, a tidy graphene heating layer is pasted on a substrate through high-temperature glue, a wax-resistant coating is sprayed, and then the super-amphiphobic film is prepared. When the wax-resistant coating is sprayed, a layer of dimethyl formamide solution of polyimide emulsion is firstly sprayed as a bottom layer binder, and the wax deposition-resistant super-amphiphobic film can be obtained after drying. The surface of the film has good liquid repellency and wax deposition resistance, the cooling solidification time of wax oil is greatly prolonged, liquid-solid phase change of the wax oil is inhibited, and wax adhesion is effectively prevented.

The invention discloses an oil-based wax deposition inhibitor as well as a preparation method and application thereof. The oil-based wax deposition inhibitor comprises the following raw materials in parts by weight: 1-25 parts of an oil-based heavy component; 2 to 15 parts of an oil-based active component; 100 parts of a dissolving dispersant; wherein the oil-based heavy component is obtained by taking furfural extract oil as a raw material; the oil-based active component is obtained by taking vacuum residue as a raw material. The wax deposition inhibitor can significantly reduce the wax deposition quality, and has the advantages of excellent performance, low cost and small dosage of chemical reagents.

The present application relates to a kind of wax deposition amount prediction methods of oil-water mixed pipeline conveying process, it includes: measuring the soil temperature near buried oil-water mixed pipeline;In different operating conditions, the temperature of oil-water mixed pipeline oil-water mixture and the speed of oil-water mixed pipeline oil-water mixture in different operating conditions are measured;Oil-water mixture sample is obtained at the sampling point of field wellhead, and the water content of oil-water mixed pipeline conveying process oil-water mixture is calculated;Wax deposit is scraped from oil-water mixed pipeline, and the thickness of wax deposition is calculated;Wax deposition amount of oil-water mixed pipeline is influenced by the water content in oil-water mixed pipeline, inlet velocity, inlet temperature and soil temperature, multiple physical quantity operating parameters are combined, and multiple parameter combination form orthogonal table is formed;Multiple parameter combination mathematical model of oil-water mixed pipeline operation process is established, and wax deposition of oil-water mixed pipeline conveying process is predicted.The present application realizes accurate and convenient prediction of wax deposition amount of oil-water mixed pipeline conveying process.